chore: release v1.6.4 (#1473 )

* chore: release v1.6.4 * chore: expand v1.6.4 CHANGELOG with additional crash-issue closes
chore(deps)(deps): bump langchain from 1.3.4 to 1.3.5 in /gitnexus-web (#1462 )
2026-05-10 08:33:47 +01:00 · 2026-05-10 06:15:27 +01:00 · 2026-05-10 05:55:44 +01:00 · 2026-05-09 19:51:12 +01:00 · 2026-05-09 19:26:53 +01:00 · 2026-05-09 17:58:22 +01:00
526 changed files with 304413 additions and 4181 deletions
@@ -23,7 +23,7 @@ Run from the project root. This parses all source files, builds the knowledge gr
 | `--embeddings`      | Enable embedding generation for semantic search (off by default)                                        |
 | `--drop-embeddings` | Drop existing embeddings on rebuild. By default, an `analyze` without `--embeddings` preserves them.    |

-**When to run:** First time in a project, after major code changes, or when `gitnexus://repo/{name}/context` reports the index is stale. In Claude Code, a PostToolUse hook runs `analyze` automatically after `git commit` and `git merge`, preserving embeddings if previously generated.
+**When to run:** First time in a project, after major code changes, or when `gitnexus://repo/{name}/context` reports the index is stale. In Claude Code, a PostToolUse hook detects staleness after `git commit` and `git merge` and notifies the agent to run `analyze` — the hook does not run analyze itself, to avoid blocking the agent for up to 120s and risking KuzuDB corruption on timeout.

 ### status — Check index freshness

@@ -1,5 +1,5 @@
 name: Setup GitNexus Web
-description: Setup Node.js 20.19+ (vite 7 floor), build gitnexus-shared, install web dependencies
+description: Setup Node.js 22, build gitnexus-shared, install web dependencies

 runs:
  using: composite
@@ -7,9 +7,7 @@ runs:
    - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
      with:
        # Vite 7 requires Node ^20.19.0 || >=22.12.0 (require(esm) support).
-        # Pin explicitly so we don't depend on the floating "20" alias resolving
-        # to a high enough patch version on every runner image.
-        node-version: '20.19.0'
+        node-version: 22
        cache: npm
        cache-dependency-path: gitnexus-web/package-lock.json

@@ -1,5 +1,5 @@
 name: Setup GitNexus
-description: Setup Node.js 20, install dependencies, and optionally build
+description: Setup Node.js 22, install dependencies, and optionally build

 inputs:
  build:
@@ -12,7 +12,7 @@ runs:
  steps:
    - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
      with:
-        node-version: 20
+        node-version: 22
        cache: npm
        cache-dependency-path: gitnexus/package-lock.json

@@ -7,6 +7,8 @@ updates:
    directory: /
    schedule:
      interval: weekly
+    cooldown:
+      default-days: 7
    open-pull-requests-limit: 5
    commit-message:
      prefix: chore
@@ -15,6 +17,36 @@ updates:
      - dependencies
      - ci

+  # Keep pinned Docker base-image digests current for the root Dockerfiles.
+  - package-ecosystem: docker
+    directory: /
+    schedule:
+      interval: weekly
+    cooldown:
+      default-days: 7
+    open-pull-requests-limit: 5
+    commit-message:
+      prefix: chore(deps)
+      include: scope
+    labels:
+      - dependencies
+      - ci
+
+  # Keep the nested test-image Docker base digest current as well.
+  - package-ecosystem: docker
+    directory: /gitnexus
+    schedule:
+      interval: weekly
+    cooldown:
+      default-days: 7
+    open-pull-requests-limit: 5
+    commit-message:
+      prefix: chore(deps)
+      include: scope
+    labels:
+      - dependencies
+      - ci
+
  # Gitnexus npm deps — tree-sitter grammars checked daily so we catch
  # new releases that unblock the tree-sitter 0.25 upgrade ASAP. Grammars
  # are grouped so lockstep bumps produce a single PR. The tree-sitter
@@ -25,6 +57,11 @@ updates:
    directory: /gitnexus
    schedule:
      interval: daily
+    cooldown:
+      default-days: 7
+      semver-major-days: 30
+      semver-minor-days: 7
+      semver-patch-days: 3
    open-pull-requests-limit: 10
    commit-message:
      prefix: chore(deps)
@@ -54,6 +91,11 @@ updates:
    directory: /gitnexus-web
    schedule:
      interval: weekly
+    cooldown:
+      default-days: 7
+      semver-major-days: 30
+      semver-minor-days: 7
+      semver-patch-days: 3
    open-pull-requests-limit: 5
    commit-message:
      prefix: chore(deps)
@@ -67,6 +109,11 @@ updates:
    directory: /gitnexus-shared
    schedule:
      interval: weekly
+    cooldown:
+      default-days: 7
+      semver-major-days: 30
+      semver-minor-days: 7
+      semver-patch-days: 3
    open-pull-requests-limit: 5
    commit-message:
      prefix: chore(deps)
@@ -32,11 +32,11 @@ import pathlib
 import re
 import sys
 import urllib.error
+import urllib.parse
 import urllib.request

 REPO_ROOT = pathlib.Path(__file__).resolve().parents[2]
 GITNEXUS_DIR = REPO_ROOT / "gitnexus"
-VENDOR_PROTO_DIR = GITNEXUS_DIR / "vendor" / "tree-sitter-proto"

 # ── Upgrade target ──────────────────────────────────────────────────────
 # The runtime version we want to upgrade TO. Update this when the goal
@@ -73,18 +73,37 @@ GRAMMARS: dict[str, tuple[str, str, str]] = {
    "tree-sitter-rust":       ("tree-sitter/tree-sitter-rust",       "master", "src/parser.c"),
    "tree-sitter-swift":      ("alex-pinkus/tree-sitter-swift",      "main",   "src/parser.c"),
    "tree-sitter-typescript": ("tree-sitter/tree-sitter-typescript", "master",  "typescript/src/parser.c"),
+    # Vendored parsers — kept here so the upstream coords for drift
+    # detection are co-located with every other grammar's coords.
+    "tree-sitter-proto":      ("coder3101/tree-sitter-proto",        "main",   "src/parser.c"),
 }

-UPSTREAM_PROTO_OWNER = "coder3101"
-UPSTREAM_PROTO_REPO = "tree-sitter-proto"
-UPSTREAM_PROTO_BRANCH = "main"
+# Grammars deliberately held below npm latest. The readiness report surfaces
+# these so reviewers can tell intentional pins apart from drift, and so the
+# context for each pin (which issue motivated it) is visible at a glance.
+# Add an entry whenever you pin a grammar below npm latest.
+INTENTIONAL_PINS: dict[str, str] = {
+    "tree-sitter-c": (
+        "#1242 — last release built against the tree-sitter@0.21 ABI; "
+        "tree-sitter-c@0.23.x prebuilds segfault on Windows under tree-sitter@0.21.1"
+    ),
+    "tree-sitter-cpp": (
+        "#1242 — last 0.23.x release before tree-sitter-cpp added a runtime "
+        "dep on the broken-ABI tree-sitter-c@^0.23.1; pinning here removes "
+        "the need for a transitive override"
+    ),
+}


 # ── Helpers ─────────────────────────────────────────────────────────────

+def _load_package_json() -> dict:
+    return json.loads((GITNEXUS_DIR / "package.json").read_text())
+
+
 def read_current_runtime() -> str:
    """Return the tree-sitter runtime version pinned in package.json (e.g. '0.21')."""
-    pkg = json.loads((GITNEXUS_DIR / "package.json").read_text())
+    pkg = _load_package_json()
    raw = pkg["dependencies"]["tree-sitter"]
    match = re.search(r"(\d+)\.(\d+)", raw)
    if not match:
@@ -92,6 +111,22 @@ def read_current_runtime() -> str:
    return f"{match.group(1)}.{match.group(2)}"


+def read_pinned_grammar_versions() -> dict[str, str]:
+    """Return the grammar version range pinned in gitnexus/package.json.
+
+    Looks at both runtime and optional dependencies. Returns the raw range
+    string (e.g. '0.21.4', '^0.23.0', 'file:./vendor/...') so the report can
+    expose how flexible each pin is.
+    """
+    pkg = _load_package_json()
+    pinned: dict[str, str] = {}
+    for section in ("dependencies", "optionalDependencies"):
+        for name, spec in (pkg.get(section) or {}).items():
+            if name.startswith("tree-sitter-"):
+                pinned[name] = spec
+    return pinned
+
+
 def npm_view_json(pkg: str) -> dict | None:
    """Fetch package metadata from the npm registry via HTTPS.

@@ -156,7 +191,17 @@ def fetch_text(url: str, timeout: int = 8) -> str | None:
    set (raises the rate limit from 60 to 5 000 requests/hour).
    """
    headers: dict[str, str] = {}
-    if _GITHUB_TOKEN and ("github.com" in url or "githubusercontent.com" in url):
+    # Parse the URL and check the hostname rather than substring-matching
+    # on the full URL string (CodeQL py/incomplete-url-substring-sanitization).
+    # `https://evil.com/?u=github.com` would have passed the substring check.
+    try:
+        parsed_host = urllib.parse.urlparse(url).hostname or ""
+    except ValueError:
+        parsed_host = ""
+    is_github_host = parsed_host == "github.com" or parsed_host.endswith(
+        (".github.com", ".githubusercontent.com")
+    ) or parsed_host == "githubusercontent.com"
+    if _GITHUB_TOKEN and is_github_host:
        headers["Authorization"] = f"Bearer {_GITHUB_TOKEN}"
    try:
        req = urllib.request.Request(url, headers=headers)
@@ -185,8 +230,178 @@ def md_h(text: str, level: int = 2) -> str:
    return f"{'#' * level} {text}\n"


+def _first_sentence(text: str) -> str:
+    """Return the leading sentence of a free-form rationale string.
+
+    Vendor package.json `_vendoredBy` fields often look like
+    "<reason>. <install-script breadcrumb>. Do NOT <warning>." — the
+    first sentence is what reviewers actually want to read; the rest is
+    noise in this context. Match a sentence-ending '.' followed by
+    whitespace; fall back to the whole string if nothing matches.
+    """
+    text = text.strip()
+    match = re.search(r"\.\s+[A-Z]", text)
+    return text[: match.start() + 1] if match else text
+
+
+def range_includes(spec: str | None, version: str) -> bool:
+    """Return True if pinned-range `spec` accepts the concrete `version`.
+
+    Handles the spec shapes we actually use in package.json:
+      - exact pins  ('0.21.4')
+      - caret / tilde ranges ('^0.23.0', '~0.23.5')
+      - non-registry pins ('file:./vendor/...', 'git+...') — always False,
+        because there's no meaningful "behind npm latest" comparison.
+    """
+    if not spec or spec == "—":
+        return False
+    if spec.startswith(("file:", "git", "http")):
+        return False
+    if spec.startswith(("^", "~")):
+        return satisfies_target(spec, version)
+    return spec.strip() == version.strip()
+
+
+def is_vendored_pin(spec: str | None) -> bool:
+    return bool(spec) and spec.startswith(("file:", "git", "http"))
+
+
+def vendored_drift_summary(
+    name: str, upstream_repo: str, upstream_branch: str, parser_path: str
+) -> dict:
+    """Inspect a vendored grammar under gitnexus/vendor/<name>.
+
+    Returns the vendored package.json's ``version`` and ``_vendoredBy``
+    fields (which carry the human rationale for vendoring), the vendored
+    parser's ABI, and a comparison against upstream main. We deliberately
+    rely on ``_vendoredBy`` rather than a parallel registry in this
+    script: the rationale belongs next to the vendored sources, not in
+    a daily-running CI script.
+    """
+    vendor_dir = GITNEXUS_DIR / "vendor" / name
+    pkg: dict = {}
+    pkg_path = vendor_dir / "package.json"
+    if pkg_path.is_file():
+        try:
+            pkg = json.loads(pkg_path.read_text(encoding="utf-8", errors="ignore"))
+        except json.JSONDecodeError:
+            pass
+
+    vendored_parser = vendor_dir / parser_path
+    if not vendored_parser.is_file():
+        vendored_parser = vendor_dir / "src" / "parser.c"
+    vendored_abi = extract_language_version(vendored_parser)
+
+    upstream_url = (
+        f"https://raw.githubusercontent.com/{upstream_repo}/"
+        f"{upstream_branch}/{parser_path}"
+    )
+    upstream_text = fetch_text(upstream_url)
+    upstream_abi = extract_abi_from_text(upstream_text) if upstream_text else None
+
+    sha_text = fetch_text(
+        f"https://api.github.com/repos/{upstream_repo}/commits/{upstream_branch}"
+    )
+    upstream_sha = "?"
+    if sha_text:
+        try:
+            upstream_sha = json.loads(sha_text).get("sha", "?")[:12]
+        except json.JSONDecodeError:
+            pass
+
+    local_text = (
+        vendored_parser.read_text(encoding="utf-8", errors="ignore")
+        if vendored_parser.is_file()
+        else ""
+    )
+    in_sync = bool(
+        upstream_text
+        and local_text.replace("\r\n", "\n") == upstream_text.replace("\r\n", "\n")
+    )
+
+    return {
+        "name": name,
+        "vendored_version": pkg.get("version", "?"),
+        "vendored_by": pkg.get("_vendoredBy"),
+        "vendored_abi": vendored_abi,
+        "upstream_repo": upstream_repo,
+        "upstream_branch": upstream_branch,
+        "upstream_sha": upstream_sha,
+        "upstream_abi": upstream_abi,
+        "in_sync": in_sync,
+    }
+
+
 # ── Main ────────────────────────────────────────────────────────────────

+
+def _classify_grammar(
+    *,
+    name: str,
+    pinned_spec: str | None,
+    npm_version: str,
+    peer_range: str | None,
+    fetch_failed: bool,
+    target_compat: bool,
+    current_compat: bool,
+    upstream_progress: str | None,
+) -> dict:
+    """Decide a single primary disposition + a separate bump-now hint.
+
+    Buckets are mutually exclusive and ordered by what a reviewer should
+    look at first:
+      - fetch_failed   : npm registry fetch failed (treat as blocker, but
+                          surface separately so reviewers don't confuse it
+                          with an upstream block)
+      - intentional    : pinned in INTENTIONAL_PINS — explicit choice
+      - ready          : npm-latest peer dep already accepts the target
+                          runtime; nothing to do
+      - waiting        : main has a fix (ABI 15 or relaxed peer) but no
+                          published npm release yet
+      - blocked        : peer dep too tight on both npm and main
+
+    Independently of bucket, `bump_now` reports whether reviewers can
+    move the pin forward today without touching the runtime — we only
+    suggest it when npm-latest's peer dep also accepts our *current*
+    runtime, otherwise the bump would break `npm install`.
+    """
+    is_vendored = is_vendored_pin(pinned_spec)
+    behind_latest = (
+        not is_vendored
+        and npm_version != "?"
+        and not range_includes(pinned_spec, npm_version)
+    )
+    # Intentional pins must never appear as actionable bumps — by definition
+    # we're holding them back on purpose. The pin can only be lifted by
+    # editing INTENTIONAL_PINS and package.json together.
+    bump_now = behind_latest and current_compat and name not in INTENTIONAL_PINS
+
+    if fetch_failed:
+        bucket = "fetch_failed"
+    elif name in INTENTIONAL_PINS:
+        bucket = "intentional"
+    elif target_compat:
+        bucket = "ready"
+    elif upstream_progress:
+        bucket = "waiting"
+    else:
+        bucket = "blocked"
+
+    return {
+        "name": name,
+        "pinned_spec": pinned_spec or "—",
+        "npm_version": npm_version,
+        "peer_range": peer_range,
+        "target_compat": target_compat,
+        "current_compat": current_compat,
+        "upstream_progress": upstream_progress,
+        "behind_latest": behind_latest,
+        "bump_now": bump_now,
+        "bucket": bucket,
+        "is_vendored": is_vendored,
+    }
+
+
 def main() -> int:
    blockers: dict[str, str] = {}
    lines: list[str] = []
@@ -196,20 +411,68 @@ def main() -> int:
    current_runtime = read_current_runtime()
    current_abi_range = RUNTIME_ABI_RANGES.get(current_runtime, (0, 0))
    target_abi_range = RUNTIME_ABI_RANGES.get(TARGET_RUNTIME_MAJOR_MINOR, (0, 0))
+    pinned_versions = read_pinned_grammar_versions()

-    lines.append(f"- Current runtime: `tree-sitter@{current_runtime}.x` (ABI {current_abi_range[0]}..{current_abi_range[1]})")
-    lines.append(f"- Target runtime: `tree-sitter@{TARGET_RUNTIME}` (ABI {target_abi_range[0]}..{target_abi_range[1]})")
+    lines.append(
+        f"`tree-sitter@{current_runtime}.x` (ABI {current_abi_range[0]}–{current_abi_range[1]}) "
+        f"→ target `tree-sitter@{TARGET_RUNTIME}` "
+        f"(ABI {target_abi_range[0]}–{target_abi_range[1]})."
+    )
    lines.append("")

-    # ── Grammar peer-dep compatibility ───────────────────────────────
-    lines.append(md_h("Grammar compatibility", 2))
-    lines.append("| Grammar | npm latest | Peer dep | Satisfies 0.25? | ABI | Upstream ABI | Status |")
-    lines.append("|---|---|---|---|---|---|---|")
+    # First pass: gather raw data + classification per grammar. We render
+    # the human-friendly buckets first, then the raw matrix in a <details>
+    # block at the end. Status text in the matrix is preserved verbatim
+    # so the workflow's row-diff change-detection keeps working.
+    grammar_rows: list[dict] = []
+    raw_matrix: list[str] = [
+        "| Grammar | Pinned | npm latest | Peer dep | Satisfies 0.25? | ABI | Upstream ABI | Status |",
+        "|---|---|---|---|---|---|---|---|",
+    ]

-    ready_count = 0
-    total_count = len(GRAMMARS)
+    vendored_grammars: list[dict] = []

    for name, (upstream_repo, upstream_branch, parser_path) in sorted(GRAMMARS.items()):
+        pinned_spec = pinned_versions.get(name, "—")
+
+        # Vendored grammars don't have an "npm latest" we install from —
+        # we ship our own copy under gitnexus/vendor/<name>. Treat them
+        # as a separate kind of artefact: their readiness for the runtime
+        # upgrade depends on the vendored ABI being in the target range,
+        # not on a peer-dep negotiation.
+        if is_vendored_pin(pinned_spec):
+            v = vendored_drift_summary(name, upstream_repo, upstream_branch, parser_path)
+            v["pinned_spec"] = pinned_spec
+            # Three-state classification: in-range, out-of-range, or
+            # not-introspectable (e.g. tree-sitter-swift ships only
+            # prebuilt .node binaries, no parser.c — assume compatible).
+            if v["vendored_abi"] is None:
+                v["target_compat"] = True
+                v["abi_state"] = "prebuilt"
+                status = "Vendored (prebuilt — ABI not introspectable)"
+            elif target_abi_range[0] <= v["vendored_abi"] <= target_abi_range[1]:
+                v["target_compat"] = True
+                v["abi_state"] = "in_range"
+                status = "Vendored (ABI in target range)"
+            else:
+                v["target_compat"] = False
+                v["abi_state"] = "out_of_range"
+                status = "Vendored (ABI out of range)"
+                blockers[name] = (
+                    f"vendored `{name}`: ABI {v['vendored_abi']} outside target range "
+                    f"{target_abi_range[0]}..{target_abi_range[1]}"
+                )
+            # Keep vendored grammars in the raw matrix so the workflow's
+            # row-diff change-detection picks up status transitions on
+            # them too. npm-only columns get sentinels.
+            raw_matrix.append(
+                f"| `{name}` | {pinned_spec} | (vendored) | (vendored) | "
+                f"{'Yes' if v['target_compat'] else '**No**'} | "
+                f"{v['vendored_abi'] or '?'} | {v['upstream_abi'] or '?'} | {status} |"
+            )
+            vendored_grammars.append(v)
+            continue
+
        # Fetch latest npm metadata.
        info = npm_view_json(name)
        fetch_failed = info is None
@@ -226,12 +489,14 @@ def main() -> int:

        if fetch_failed:
            peer_display = "? (fetch failed)"
-            compatible = False
+            target_compat = False
+            current_compat = False
        else:
            peer_display = peer_range or "none"
            if peer_range and not peer_optional:
                peer_display += " (required)"
-            compatible = satisfies_target(peer_range, TARGET_RUNTIME)
+            target_compat = satisfies_target(peer_range, TARGET_RUNTIME)
+            current_compat = satisfies_target(peer_range, f"{current_runtime}.0")

        # Check installed ABI using the same parser_path from GRAMMARS.
        installed_parser = GITNEXUS_DIR / "node_modules" / name / parser_path
@@ -250,22 +515,40 @@ def main() -> int:
        upstream_abi = extract_abi_from_text(upstream_text) if upstream_text else None
        upstream_abi_display = str(upstream_abi) if upstream_abi else "?"

-        # Determine status.
+        # Status text + upstream-progress detection. The Status column
+        # values are preserved as-is to keep the workflow's row-diff
+        # change-detection working on the raw matrix below.
+        upstream_progress: str | None = None
        if fetch_failed:
            status = "Unknown (fetch failed)"
            blockers[name] = f"`{name}`: npm registry fetch failed — could not verify peer dep"
-        elif compatible:
+        elif name in INTENTIONAL_PINS:
+            # An intentional pin is, by definition, a held-back grammar:
+            # whatever npm-latest's peer dep says, our shipped version is
+            # the one whose ABI/peer must accept the target runtime, and
+            # the pin entry exists precisely because it does not. Treat
+            # it as a blocker until the pin is lifted (entry removed from
+            # INTENTIONAL_PINS), at which point this grammar falls back
+            # to standard classification on the next run.
+            status = "Intentionally pinned"
+            blockers[name] = (
+                f"`{name}` intentionally pinned at `{pinned_spec}` "
+                f"({INTENTIONAL_PINS[name]}) — pin must be lifted "
+                f"before the {TARGET_RUNTIME} runtime upgrade"
+            )
+        elif target_compat:
            status = "Ready"
-            ready_count += 1
        elif upstream_abi and upstream_abi >= 15:
            status = "Unreleased (ABI 15 on main)"
+            upstream_progress = f"ABI 15 on `{upstream_repo}@{upstream_branch}` not yet published"
            blockers[name] = f"`{name}`: ABI 15 on `{upstream_repo}` main but not published to npm"
        else:
            status = "Blocking"
            blockers[name] = f"`{name}@{npm_version}`: peer `{peer_display}` incompatible with 0.25"

-        # Also check upstream package.json for relaxed peer dep.
-        if not compatible and not fetch_failed:
+        # Also check upstream package.json for relaxed peer dep — beats
+        # the ABI-15 hint when both are true.
+        if not target_compat and not fetch_failed:
            upstream_pkg_url = (
                f"https://raw.githubusercontent.com/{upstream_repo}/"
                f"{upstream_branch}/package.json"
@@ -277,82 +560,250 @@ def main() -> int:
                    upstream_peer = (upstream_pkg.get("peerDependencies") or {}).get("tree-sitter")
                    if upstream_peer and satisfies_target(upstream_peer, TARGET_RUNTIME):
                        status = "Unreleased (peer relaxed on main)"
+                        upstream_progress = (
+                            f"peer relaxed to `{upstream_peer}` on "
+                            f"`{upstream_repo}@{upstream_branch}` not yet published"
+                        )
                        blockers[name] = f"`{name}`: peer dep relaxed on `{upstream_repo}` main but not published to npm"
                except json.JSONDecodeError:
                    pass

-        compat_icon = "Yes" if compatible else "**No**"
-        lines.append(
-            f"| `{name}` | {npm_version} | {peer_display} | {compat_icon} | {abi_display} | {upstream_abi_display} | {status} |"
+        pinned_spec = pinned_versions.get(name, "—")
+        compat_icon = "Yes" if target_compat else "**No**"
+        raw_matrix.append(
+            f"| `{name}` | {pinned_spec} | {npm_version} | {peer_display} | "
+            f"{compat_icon} | {abi_display} | {upstream_abi_display} | {status} |"
        )

-    lines.append("")
-    lines.append(f"**{ready_count}/{total_count}** grammars ready for `tree-sitter@{TARGET_RUNTIME}`.")
-    lines.append("")
+        grammar_rows.append(_classify_grammar(
+            name=name,
+            pinned_spec=pinned_spec,
+            npm_version=npm_version,
+            peer_range=peer_range,
+            fetch_failed=fetch_failed,
+            target_compat=target_compat,
+            current_compat=current_compat,
+            upstream_progress=upstream_progress,
+        ))

-    # ── Vendored proto drift ─────────────────────────────────────────
-    lines.append(md_h("Vendored tree-sitter-proto", 2))
-    vendored_abi = extract_language_version(VENDOR_PROTO_DIR / "src" / "parser.c")
+    # ── Bucketize ────────────────────────────────────────────────────
+    by_bucket: dict[str, list[dict]] = {
+        k: [] for k in ("ready", "intentional", "waiting", "blocked", "fetch_failed")
+    }
+    for row in grammar_rows:
+        by_bucket[row["bucket"]].append(row)
+    bump_now = [r for r in grammar_rows if r["bump_now"]]
+    ready_count = len(by_bucket["ready"])

-    upstream_proto_url = (
-        f"https://raw.githubusercontent.com/{UPSTREAM_PROTO_OWNER}/"
-        f"{UPSTREAM_PROTO_REPO}/{UPSTREAM_PROTO_BRANCH}/src/parser.c"
-    )
-    upstream_proto_text = fetch_text(upstream_proto_url)
-    upstream_proto_abi = extract_abi_from_text(upstream_proto_text) if upstream_proto_text else None
+    # ── TL;DR ────────────────────────────────────────────────────────
+    npm_count = len(grammar_rows)
+    vendored_count = len(vendored_grammars)
+    vendored_ready = sum(1 for v in vendored_grammars if v["target_compat"])

-    sha_url = (
-        f"https://api.github.com/repos/{UPSTREAM_PROTO_OWNER}/"
-        f"{UPSTREAM_PROTO_REPO}/commits/{UPSTREAM_PROTO_BRANCH}"
-    )
-    sha_text = fetch_text(sha_url)
-    upstream_sha = "?"
-    if sha_text:
-        try:
-            upstream_sha = json.loads(sha_text).get("sha", "?")[:12]
-        except json.JSONDecodeError:
-            pass
-
-    local_proto_path = VENDOR_PROTO_DIR / "src" / "parser.c"
-    local_proto_text = local_proto_path.read_text(encoding="utf-8", errors="ignore") if local_proto_path.is_file() else ""
-    in_sync = bool(
-        upstream_proto_text
-        and local_proto_text.replace("\r\n", "\n")
-        == upstream_proto_text.replace("\r\n", "\n")
-    )
-
-    lines.append(f"- Upstream: `{UPSTREAM_PROTO_OWNER}/{UPSTREAM_PROTO_REPO}@{UPSTREAM_PROTO_BRANCH}` (HEAD `{upstream_sha}`)")
-    lines.append(f"- Upstream ABI: **{upstream_proto_abi}**")
-    lines.append(f"- Vendored ABI: **{vendored_abi}**")
-    lines.append(f"- In sync: {'yes' if in_sync else 'no — upstream has diverged'}")
-
-    if upstream_proto_abi and vendored_abi and upstream_proto_abi > vendored_abi:
-        can_upgrade = upstream_proto_abi <= target_abi_range[1]
-        lines.append(f"- Upstream ABI {upstream_proto_abi} {'is' if can_upgrade else 'is NOT'} within target runtime range ({target_abi_range[0]}..{target_abi_range[1]})")
-        if can_upgrade:
-            lines.append(f"- **Action:** after upgrading to tree-sitter@{TARGET_RUNTIME}, regenerate vendored parser.c from upstream `{upstream_sha}`")
-        else:
-            lines.append(f"- **Action:** wait for runtime upgrade beyond {TARGET_RUNTIME} that supports ABI {upstream_proto_abi}")
-            blockers["vendored-proto-abi"] = f"vendored tree-sitter-proto: upstream ABI {upstream_proto_abi} outside target range"
-    elif not in_sync:
-        lines.append("- **Action:** review upstream changes; vendored copy may need updating")
-        blockers["vendored-proto-sync"] = "vendored tree-sitter-proto: out of sync with upstream"
-
-    # ── Summary ──────────────────────────────────────────────────────
-    lines.append("")
-    lines.append(md_h("Summary", 2))
-    if blockers:
-        lines.append(f"**{len(blockers)} blocker(s) remaining:**\n")
-        for b in blockers.values():
-            lines.append(f"- {b}")
-        lines.append("")
-        lines.append("Upgrade to `tree-sitter@0.25` is **blocked**.")
+    if not blockers:
+        verdict = "**Ready** — all grammars are 0.25-compatible. The runtime upgrade can proceed."
    else:
-        lines.append("All grammars are compatible. Upgrade to `tree-sitter@0.25` is **ready**.")
+        moved = "no" if not by_bucket["waiting"] else f"yes — {len(by_bucket['waiting'])} grammars have unreleased fixes on main"
+        verdict = (
+            f"**Blocked** — {len(blockers)} grammars are not yet 0.25-compatible. "
+            f"Upstream movement: {moved}."
+        )
+
+    lines.append(md_h("TL;DR", 2))
+    lines.append(verdict)
+    lines.append("")
+    lines.append(f"- {ready_count}/{npm_count} npm-installed grammars already accept tree-sitter@{TARGET_RUNTIME}")
+    if vendored_count:
+        lines.append(
+            f"- {vendored_ready}/{vendored_count} vendored grammars at an ABI within the target runtime range"
+        )
+    lines.append(f"- {len(by_bucket['intentional'])} intentionally pinned (see below)")
+    lines.append(f"- {len(by_bucket['waiting'])} waiting on an upstream npm release")
+    lines.append(f"- {len(by_bucket['blocked'])} blocked on upstream (no fix even on main)")
+    if by_bucket['fetch_failed']:
+        lines.append(f"- {len(by_bucket['fetch_failed'])} could not be checked (npm registry unreachable)")
+    if bump_now:
+        lines.append(
+            f"- **{len(bump_now)} bump candidate(s) you can take TODAY** (npm-latest "
+            f"is newer than the pin AND its peer dep accepts our current runtime)"
+        )
+    lines.append("")
+
+    # ── What you can do today ───────────────────────────────────────
+    if bump_now:
+        lines.append(md_h("What you can do today", 2))
+        lines.append(
+            "These pins lag npm latest and the latest version's peer dep already "
+            "accepts our current `tree-sitter@" + current_runtime + ".x` runtime. "
+            "Bumping is independent of the 0.25 upgrade and should be a quick PR."
+        )
+        lines.append("")
+        for r in sorted(bump_now, key=lambda r: r["name"]):
+            lines.append(
+                f"- `{r['name']}`: `{r['pinned_spec']}` → `{r['npm_version']}` "
+                f"(peer `{r['peer_range'] or 'none'}`)"
+            )
+        lines.append("")
+
+    # ── Per-disposition sections ────────────────────────────────────
+    def _emit_bucket(title: str, body_intro: str, rows: list[dict], render) -> None:
+        if not rows:
+            return
+        lines.append(md_h(f"{title} ({len(rows)})", 3))
+        lines.append(body_intro)
+        lines.append("")
+        for r in sorted(rows, key=lambda r: r["name"]):
+            lines.append(render(r))
+        lines.append("")
+
+    lines.append(md_h("Disposition", 2))
+
+    _emit_bucket(
+        "Ready for 0.25",
+        "These grammars' npm-latest peer dep already accepts the target runtime. No action needed for the upgrade.",
+        by_bucket["ready"],
+        lambda r: (
+            f"- `{r['name']}` — pinned `{r['pinned_spec']}`, npm latest `{r['npm_version']}`"
+            + ("  _(also a bump candidate — see above)_" if r["bump_now"] else "")
+        ),
+    )
+
+    if by_bucket["intentional"]:
+        lines.append(md_h(f"Intentionally pinned ({len(by_bucket['intentional'])})", 3))
+        lines.append(
+            "Deliberately held below npm latest. These are **not** drift — each entry "
+            "lists the issue motivating the pin and the condition for unpinning."
+        )
+        lines.append("")
+        for r in sorted(by_bucket["intentional"], key=lambda r: r["name"]):
+            reason = INTENTIONAL_PINS.get(r["name"], "(no rationale recorded)")
+            lines.append(
+                f"- `{r['name']}` pinned at `{r['pinned_spec']}` "
+                f"(npm latest `{r['npm_version']}`)\n  {reason}"
+            )
+        lines.append("")
+
+    _emit_bucket(
+        "Waiting on upstream npm release",
+        "Fixes are merged on the upstream main branch but not yet published to npm. "
+        "We can move forward as soon as upstream cuts a release.",
+        by_bucket["waiting"],
+        lambda r: (
+            f"- `{r['name']}@{r['npm_version']}` — peer `{r['peer_range'] or 'none'}`. "
+            f"_{r['upstream_progress']}_"
+        ),
+    )
+
+    _emit_bucket(
+        "Blocked on upstream",
+        "Peer dep is too tight on both the latest npm release and on upstream main. "
+        "These need an upstream issue/PR before we can proceed.",
+        by_bucket["blocked"],
+        lambda r: (
+            f"- `{r['name']}@{r['npm_version']}` — peer `{r['peer_range'] or 'none'}`"
+            + (" _(vendored)_" if r["is_vendored"] else "")
+        ),
+    )
+
+    _emit_bucket(
+        "Could not check",
+        "npm registry fetch failed for these grammars. Re-run the workflow to retry.",
+        by_bucket["fetch_failed"],
+        lambda r: f"- `{r['name']}` (pinned `{r['pinned_spec']}`)",
+    )
+
+    # ── Vendored parsers ────────────────────────────────────────────
+    if vendored_grammars:
+        lines.append(md_h(f"Vendored parsers ({len(vendored_grammars)})", 2))
+        lines.append(
+            "These grammars ship from `gitnexus/vendor/` rather than the npm "
+            "registry. Their compatibility is governed by the **vendored "
+            "ABI** (must lie in the target runtime's range), not by a peer-"
+            "dep negotiation. The rationale for each vendored copy lives in "
+            "its own `package.json` `_vendoredBy` field."
+        )
+        lines.append("")
+        for v in sorted(vendored_grammars, key=lambda v: v["name"]):
+            sync_label = (
+                "in sync with upstream" if v["in_sync"] else "diverged from upstream"
+            )
+            if v["abi_state"] == "in_range":
+                abi_label = f"ABI `{v['vendored_abi']}` (in target range)"
+            elif v["abi_state"] == "prebuilt":
+                abi_label = "ABI `prebuilt` (binary-only vendor, source not introspectable)"
+            else:
+                abi_label = (
+                    f"ABI `{v['vendored_abi']}` (**outside** target range "
+                    f"{target_abi_range[0]}..{target_abi_range[1]})"
+                )
+            upstream_abi_str = (
+                f"ABI `{v['upstream_abi']}`" if v["upstream_abi"] else "ABI `?`"
+            )
+            lines.append(
+                f"- **`{v['name']}`** `{v['vendored_version']}` — {abi_label}, "
+                f"upstream `{v['upstream_repo']}@{v['upstream_sha']}` "
+                f"{upstream_abi_str} · {sync_label}"
+            )
+            if v["vendored_by"]:
+                # Show the first sentence — vendor package.json fields tend
+                # to start with the rationale and tail off into install-
+                # script breadcrumbs that aren't useful in this report.
+                rationale = _first_sentence(v["vendored_by"])
+                lines.append(f"  - **Why vendored:** {rationale}")
+            # Action computation: needs regen iff upstream ABI exceeds
+            # vendored AND is still within target range. If upstream ABI
+            # exceeds the target, that's a runtime-side blocker. For
+            # prebuilt-only vendors we can't drive this from source ABI;
+            # the action is a manual upstream-binary refresh, surfaced
+            # via the in-sync flag instead.
+            if v["abi_state"] == "prebuilt":
+                if not v["in_sync"]:
+                    lines.append(
+                        "  - **Action:** check whether upstream has shipped a new "
+                        "prebuilt release; this vendor ships binary-only artefacts."
+                    )
+            elif v["upstream_abi"] and v["vendored_abi"] and v["upstream_abi"] > v["vendored_abi"]:
+                if v["upstream_abi"] <= target_abi_range[1]:
+                    lines.append(
+                        f"  - **Action:** after upgrading to tree-sitter@{TARGET_RUNTIME}, "
+                        f"regenerate `parser.c` from upstream `{v['upstream_sha']}`."
+                    )
+                else:
+                    lines.append(
+                        f"  - **Action:** wait for a runtime supporting ABI "
+                        f"{v['upstream_abi']}; current target ({TARGET_RUNTIME}) only "
+                        f"goes up to ABI {target_abi_range[1]}."
+                    )
+                    blockers[f"vendored-{v['name']}-abi"] = (
+                        f"vendored {v['name']}: upstream ABI {v['upstream_abi']} outside target range"
+                    )
+            elif not v["in_sync"]:
+                lines.append(
+                    "  - **Action:** review upstream changes; vendored copy may "
+                    "need a refresh (no ABI bump required)."
+                )
+        lines.append("")
+
+    # ── Raw matrix (for completeness + workflow row-diff) ────────────
+    lines.append(md_h("Full grammar matrix", 2))
+    lines.append(
+        "<details><summary>Click to expand the raw per-grammar table "
+        "(used by the workflow's change-detection bot).</summary>\n"
+    )
+    lines.extend(raw_matrix)
+    lines.append("\n</details>")
+    lines.append("")

    print("\n".join(lines))
    return 1 if blockers else 0


 if __name__ == "__main__":
+    # Force UTF-8 output: the report contains em-dashes and arrows that
+    # Windows' default cp1252 codepage can't encode, while Linux runners
+    # default to UTF-8 anyway.
+    try:
+        sys.stdout.reconfigure(encoding="utf-8")  # type: ignore[attr-defined]
+    except Exception:
+        pass
    sys.exit(main())
@@ -3,6 +3,9 @@ name: E2E Tests
 on:
  workflow_call:

+permissions:
+  contents: read
+
 jobs:
  check-changes:
    name: Check web module changes
@@ -28,6 +31,9 @@ jobs:
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

+      - name: Configure e2e GitNexus home
+        run: echo "GITNEXUS_HOME=${RUNNER_TEMP}/gitnexus-home" >> "$GITHUB_ENV"
+
      - uses: ./.github/actions/setup-gitnexus-web

      - name: Install Playwright browsers
@@ -44,9 +50,14 @@ jobs:

      - name: Analyze repository (index for backend)
        run: |
-          node gitnexus/dist/cli/index.js analyze || true
-          if [ ! -d ".gitnexus" ]; then
-            echo "::error::No .gitnexus index created"
+          E2E_REPO="${RUNNER_TEMP}/gitnexus-e2e-repo"
+          rm -rf "${E2E_REPO}"
+          mkdir -p "${E2E_REPO}"
+          cp -R gitnexus/test/fixtures/mini-repo/src "${E2E_REPO}/src"
+          printf '%s\n' '{"name":"e2e-mini-repo","version":"0.0.0","private":true}' > "${E2E_REPO}/package.json"
+          node gitnexus/dist/cli/index.js analyze "${E2E_REPO}" --skip-git --skip-agents-md --name e2e-mini-repo
+          if [ ! -d "${E2E_REPO}/.gitnexus" ]; then
+            echo "::error::No fixture .gitnexus index created"
            exit 1
          fi

@@ -3,6 +3,9 @@ name: Quality Checks
 on:
  workflow_call:

+permissions:
+  contents: read
+
 jobs:
  format:
    runs-on: ubuntu-latest
@@ -11,7 +14,7 @@ jobs:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
-          node-version: 20
+          node-version: 22
          cache: npm
          cache-dependency-path: package-lock.json
      - run: npm ci
@@ -24,7 +27,7 @@ jobs:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
-          node-version: 20
+          node-version: 22
          cache: npm
          cache-dependency-path: package-lock.json
      - run: npm ci
@@ -95,31 +95,33 @@ jobs:

          # Validate PR number is a positive integer (artifact comes from
          # untrusted fork code, so treat contents defensively).
-          PR_NUM=$(cat "$DIR/pr_number" | tr -d '[:space:]')
+          PR_NUM=$(tr -d '[:space:]' < "$DIR/pr_number")
          if ! [[ "$PR_NUM" =~ ^[0-9]+$ ]]; then
            echo "skip=true" >> "$GITHUB_OUTPUT"
            echo "::error::Invalid PR number in artifact: '$PR_NUM'"
            exit 0
          fi

-          echo "skip=false"              >> "$GITHUB_OUTPUT"
-          echo "pr_number=$PR_NUM"       >> "$GITHUB_OUTPUT"
          # Validate job-result strings against known GitHub Actions values.
          # Artifact contents come from the PR workflow (potentially untrusted
          # fork code), so we whitelist to prevent newline injection into
          # GITHUB_OUTPUT.
          validate_result() {
            local val
-            val=$(cat "$1" | tr -d '[:space:]')
+            val=$(tr -d '[:space:]' < "$1")
            case "$val" in
              success|failure|cancelled|skipped) echo "$val" ;;
              *) echo "unknown" ;;
            esac
          }

-          echo "quality=$(validate_result "$DIR/quality_result")"        >> "$GITHUB_OUTPUT"
-          echo "tests=$(validate_result "$DIR/tests_result")"            >> "$GITHUB_OUTPUT"
-          echo "e2e=$(validate_result "$DIR/e2e_result")"                >> "$GITHUB_OUTPUT"
+          {
+            echo "skip=false"
+            echo "pr_number=$PR_NUM"
+            echo "quality=$(validate_result "$DIR/quality_result")"
+            echo "tests=$(validate_result "$DIR/tests_result")"
+            echo "e2e=$(validate_result "$DIR/e2e_result")"
+          } >> "$GITHUB_OUTPUT"

      - name: Checkout (for vitest config)
        if: steps.meta.outputs.skip != 'true'
@@ -138,14 +140,15 @@ jobs:
            const fs = require('fs');
            const path = require('path');

-            // Find the latest successful CI run on main
+            // Find recent successful CI runs on main (check several in case
+            // the most recent artifact has expired).
            const runs = await github.rest.actions.listWorkflowRuns({
              owner: context.repo.owner,
              repo: context.repo.repo,
              workflow_id: 'ci.yml',
              branch: 'main',
              status: 'success',
-              per_page: 1,
+              per_page: 5,
            });

            if (runs.data.workflow_runs.length === 0) {
@@ -154,32 +157,47 @@ jobs:
              return;
            }

-            const mainRunId = runs.data.workflow_runs[0].id;
-            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              run_id: mainRunId,
-            });
+            // Try each run until we find a downloadable test-reports artifact
+            for (const run of runs.data.workflow_runs) {
+              const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                run_id: run.id,
+              });

-            const testReports = artifacts.data.artifacts.find(a => a.name === 'test-reports');
-            if (!testReports) {
-              core.setOutput('found', 'false');
-              core.info('No test-reports artifact on main branch');
-              return;
+              const testReports = artifacts.data.artifacts.find(a => a.name === 'test-reports');
+              if (!testReports) {
+                core.info(`Run ${run.id}: no test-reports artifact, trying next`);
+                continue;
+              }
+
+              try {
+                const zip = await github.rest.actions.downloadArtifact({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  artifact_id: testReports.id,
+                  archive_format: 'zip',
+                });
+
+                const dest = path.join(process.env.RUNNER_TEMP, 'base-coverage');
+                fs.mkdirSync(dest, { recursive: true });
+                fs.writeFileSync(path.join(dest, 'base.zip'), Buffer.from(zip.data));
+                core.setOutput('found', 'true');
+                core.setOutput('dir', dest);
+                return;
+              } catch (err) {
+                // 410 Gone means the artifact expired; try the next run
+                if (err.status === 410 || err.response?.status === 410) {
+                  core.info(`Run ${run.id}: artifact expired, trying next`);
+                  continue;
+                }
+                throw err;
+              }
            }

-            const zip = await github.rest.actions.downloadArtifact({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              artifact_id: testReports.id,
-              archive_format: 'zip',
-            });
-
-            const dest = path.join(process.env.RUNNER_TEMP, 'base-coverage');
-            fs.mkdirSync(dest, { recursive: true });
-            fs.writeFileSync(path.join(dest, 'base.zip'), Buffer.from(zip.data));
-            core.setOutput('found', 'true');
-            core.setOutput('dir', dest);
+            // All attempts exhausted — no usable base coverage
+            core.setOutput('found', 'false');
+            core.info('No downloadable test-reports artifact found on main (all expired or missing)');

      - name: Extract base coverage
        if: steps.meta.outputs.skip != 'true' && steps.base-coverage.outputs.found == 'true'
@@ -234,7 +252,7 @@ jobs:
              printf -v "${prefix}_BRANCH_COV" '%s' ""
              printf -v "${prefix}_FUNCS_COV" '%s' ""
              printf -v "${prefix}_LINES_COV" '%s' ""
-              return 1
+              return 0
            fi
          }

@@ -263,14 +281,17 @@ jobs:
            fi
          }

-          read CLI_T CLI_P CLI_F CLI_S CLI_SU CLI_D <<< "$(sum_results "$RESULTS_FILE")"
-          read WEB_T WEB_P WEB_F WEB_S WEB_SU WEB_D <<< "$(sum_results "$WEB_RESULTS_FILE")"
+          # `_` placeholder for the suite-count column — positional
+          # readability for sum_results' 6-field output, but the value
+          # isn't surfaced in the report (suites are tracked per-test
+          # framework, not as a top-line metric).
+          read -r CLI_T CLI_P CLI_F CLI_S _ CLI_D <<< "$(sum_results "$RESULTS_FILE")"
+          read -r WEB_T WEB_P WEB_F WEB_S _ WEB_D <<< "$(sum_results "$WEB_RESULTS_FILE")"

          TOTAL=$((CLI_T + WEB_T))
          PASSED=$((CLI_P + WEB_P))
          FAILED=$((CLI_F + WEB_F))
          SKIPPED=$((CLI_S + WEB_S))
-          SUITES=$((CLI_SU + WEB_SU))
          DURATION=$((CLI_D > WEB_D ? CLI_D : WEB_D))

          # ── Status helpers ──
@@ -11,7 +11,8 @@ name: Scope Resolution Parity
 # TWICE on every PR:
 #
 #   1. `REGISTRY_PRIMARY_<LANG>=0` — legacy DAG path (guarantees we haven't
-#      broken the old path while migrating).
+#      broken the old path while migrating). Known legacy gaps may be skipped
+#      through the resolver test helper's expected-failure list.
 #   2. `REGISTRY_PRIMARY_<LANG>=1` — registry-primary path (guarantees the
 #      new path carries the same behavior — the parity gate).
 #
@@ -27,6 +28,9 @@ name: Scope Resolution Parity
 on:
  workflow_call:

+permissions:
+  contents: read
+
 jobs:
  discover:
    name: Discover migrated languages
@@ -3,6 +3,9 @@ name: Tests
 on:
  workflow_call:

+permissions:
+  contents: read
+
 jobs:
  tests:
    name: ubuntu / coverage
@@ -1,27 +1,26 @@
 name: CI

 on:
-  push:
-    branches: [main]
-    paths-ignore: ['**.md', 'docs/**', 'LICENSE']
  pull_request:
    branches: [main]
    paths-ignore: ['**.md', 'docs/**', 'LICENSE']
  workflow_call:

+permissions:
+  contents: read
+
 # Concurrency convention: see CONTRIBUTING.md → "GitHub Actions — Concurrency Convention".
 # Hardcoded `CI-` prefix (not `${{ github.workflow }}`) because this workflow is
 # invoked as a reusable workflow from publish.yml and release-candidate.yml. In
 # called-workflow context `github.workflow` evaluation is ambiguous across GitHub
 # Actions versions, and a prefix that could resolve to the caller's name would
 # share a concurrency group with the caller → deadlock. A literal prefix is
-# immune. Direct `push`/`pull_request` invocations use `CI-<ref>`; invocations
-# from a reusable-workflow caller fall into a per-run-unique group that never
-# serializes with the caller.
-# cancel-in-progress is event-aware: cancel superseded PR runs, queue every other
-# event (push to main, workflow_call from publish.yml, etc.).
+# immune. Direct `pull_request` invocations use `CI-<ref>`; invocations from a
+# reusable-workflow caller fall into a per-run-unique group that never serializes
+# with the caller. `push` to main is handled by release-candidate.yml, which
+# calls this workflow once before publishing.
 concurrency:
-  group: ${{ (github.event_name == 'pull_request' || github.event_name == 'push') && format('CI-{0}', github.ref) || format('CI-nested-{0}', github.run_id) }}
+  group: ${{ github.event_name == 'pull_request' && format('CI-{0}', github.ref) || format('CI-nested-{0}', github.run_id) }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

 # ── Reusable workflow orchestration ─────────────────────────────────
@@ -1,96 +0,0 @@
-name: Claude Code Review
-
-# Uses pull_request_target so the workflow runs as defined on the default branch,
-# which allows access to secrets for posting review comments on fork PRs.
-# SECURITY: The checkout pins the fork's HEAD SHA (not the branch name) to
-# prevent TOCTOU races (force-push between trigger and checkout). The
-# claude-code-action sandboxes execution — it does NOT run arbitrary code
-# from the checked-out source.
-
-on:
-  # Trigger only when explicitly requested:
-  #   - Add the "claude-review" label to a PR, OR
-  #   - Comment "@claude" or "/review" on a PR
-  pull_request_target:
-    types: [labeled]
-  issue_comment:
-    types: [created]
-
-# Concurrency convention: see CONTRIBUTING.md → "GitHub Actions — Concurrency Convention".
-# Serialize per-PR to avoid racing review comments.
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.issue.number || github.event.pull_request.number }}
-  cancel-in-progress: false
-
-jobs:
-  claude-review:
-    # Run only when:
-    #   1. The "claude-review" label is added to a non-draft PR by a trusted contributor, OR
-    #   2. A trusted contributor comments "@claude" or "/review" on a PR
-    if: |
-      (
-        github.event_name == 'pull_request_target' &&
-        github.event.label.name == 'claude-review' &&
-        github.event.pull_request.draft == false &&
-        (github.event.pull_request.author_association == 'OWNER' ||
-         github.event.pull_request.author_association == 'MEMBER' ||
-         github.event.pull_request.author_association == 'COLLABORATOR')
-      ) ||
-      (
-        github.event_name == 'issue_comment' &&
-        github.event.issue.pull_request &&
-        (contains(github.event.comment.body, '@claude') ||
-         contains(github.event.comment.body, '/review')) &&
-        (github.event.comment.author_association == 'OWNER' ||
-         github.event.comment.author_association == 'MEMBER' ||
-         github.event.comment.author_association == 'COLLABORATOR')
-      )
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    permissions:
-      contents: read
-      pull-requests: write
-      issues: read
-      id-token: write
-
-    steps:
-      # For issue_comment triggers, resolve the PR number, head SHA, and fork repo
-      - name: Resolve PR context
-        id: pr
-        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v7
-        with:
-          script: |
-            let pr;
-            if (context.eventName === 'issue_comment') {
-              const resp = await github.rest.pulls.get({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                pull_number: context.payload.issue.number,
-              });
-              pr = resp.data;
-            } else {
-              pr = context.payload.pull_request;
-            }
-            core.setOutput('number', pr.number);
-            core.setOutput('sha', pr.head.sha);
-            core.setOutput('repo', pr.head.repo.full_name);
-            core.setOutput('branch', pr.head.ref);
-
-      - name: Checkout PR head
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          repository: ${{ steps.pr.outputs.repo }}
-          ref: ${{ steps.pr.outputs.sha }}
-          fetch-depth: 1
-
-      - name: Run Claude Code Review
-        id: claude-review
-        uses: anthropics/claude-code-action@9469d113c6afd29550c402740f22d1a97dd1209b # v1
-        with:
-          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          allowed_non_write_users: '*'
-          show_full_output: true
-          plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
-          plugins: 'code-review@claude-code-plugins'
-          prompt: '/code-review:code-review ${{ github.repository }}/pull/${{ steps.pr.outputs.number }}'
@@ -1,8 +1,17 @@
 name: Claude Code

+# Label-triggered code-review requests use pull_request_target so the workflow
+# runs as defined on the default branch, which allows access to secrets for
+# posting review comments on fork PRs. SECURITY: PR checkouts pin the fork's
+# HEAD SHA (not the branch name) to prevent TOCTOU races.
+# The claude-code-action sandboxes execution; it does not run arbitrary code
+# from the checked-out source.
+
 on:
  issue_comment:
    types: [created]
+  pull_request_target:
+    types: [labeled]
  pull_request_review_comment:
    types: [created]
  issues:
@@ -10,6 +19,9 @@ on:
  pull_request_review:
    types: [submitted]

+permissions:
+  contents: read
+
 # Concurrency convention: see CONTRIBUTING.md → "GitHub Actions — Concurrency Convention".
 # Serialize per-PR/issue to avoid racing comments.
 concurrency:
@@ -21,7 +33,10 @@ jobs:
    if: |
      (
        github.event_name == 'issue_comment' &&
-        contains(github.event.comment.body, '@claude') &&
+        (
+          contains(github.event.comment.body, '@claude') ||
+          (github.event.issue.pull_request && contains(github.event.comment.body, '/review'))
+        ) &&
        (github.event.comment.author_association == 'OWNER' ||
         github.event.comment.author_association == 'MEMBER' ||
         github.event.comment.author_association == 'COLLABORATOR')
@@ -46,6 +61,14 @@ jobs:
        (github.event.issue.author_association == 'OWNER' ||
         github.event.issue.author_association == 'MEMBER' ||
         github.event.issue.author_association == 'COLLABORATOR')
+      ) ||
+      (
+        github.event_name == 'pull_request_target' &&
+        github.event.label.name == 'claude-review' &&
+        github.event.pull_request.draft == false &&
+        (github.event.pull_request.author_association == 'OWNER' ||
+         github.event.pull_request.author_association == 'MEMBER' ||
+         github.event.pull_request.author_association == 'COLLABORATOR')
      )
    runs-on: ubuntu-latest
    timeout-minutes: 30
@@ -63,33 +86,48 @@ jobs:
        with:
          script: |
            // Determine if this event is PR-related
-            let prNumber = null;
+            let pr = null;
            if (context.eventName === 'issue_comment' && context.payload.issue.pull_request) {
-              prNumber = context.payload.issue.number;
+              const resp = await github.rest.pulls.get({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: context.payload.issue.number,
+              });
+              pr = resp.data;
            } else if (context.eventName === 'pull_request_review_comment') {
-              prNumber = context.payload.pull_request.number;
+              pr = context.payload.pull_request;
            } else if (context.eventName === 'pull_request_review') {
-              prNumber = context.payload.pull_request.number;
+              pr = context.payload.pull_request;
+            } else if (context.eventName === 'pull_request_target') {
+              pr = context.payload.pull_request;
            }

-            if (!prNumber) {
+            if (!pr) {
              core.setOutput('is_pr', 'false');
              return;
            }

-            const resp = await github.rest.pulls.get({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              pull_number: prNumber,
-            });
-            const pr = resp.data;
-
            core.setOutput('is_pr', 'true');
-            core.setOutput('number', String(prNumber));
+            core.setOutput('number', String(pr.number));
            core.setOutput('sha', pr.head.sha);
            core.setOutput('repo', pr.head.repo.full_name);
            core.setOutput('branch', pr.head.ref);

+      - name: Resolve Claude mode
+        id: mode
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v7
+        with:
+          script: |
+            const body = (context.payload.comment?.body ?? '').toLowerCase();
+            const isCodeReview =
+              (context.eventName === 'pull_request_target' &&
+                context.payload.label?.name === 'claude-review') ||
+              (context.eventName === 'issue_comment' &&
+                Boolean(context.payload.issue?.pull_request) &&
+                body.includes('/review'));
+
+            core.setOutput('code_review', isCodeReview ? 'true' : 'false');
+
      - name: Checkout repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
@@ -98,6 +136,7 @@ jobs:
          fetch-depth: 1

      - name: Run Claude Code
+        if: steps.mode.outputs.code_review != 'true'
        id: claude
        uses: anthropics/claude-code-action@9469d113c6afd29550c402740f22d1a97dd1209b # v1
        with:
@@ -109,3 +148,16 @@ jobs:
          # This is an optional setting that allows Claude to read CI results on PRs
          additional_permissions: |
            actions: read
+
+      - name: Run Claude Code Review
+        if: steps.mode.outputs.code_review == 'true'
+        id: claude-review
+        uses: anthropics/claude-code-action@9469d113c6afd29550c402740f22d1a97dd1209b # v1
+        with:
+          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          allowed_non_write_users: '*'
+          show_full_output: true
+          plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
+          plugins: 'code-review@claude-code-plugins'
+          prompt: '/code-review:code-review ${{ github.repository }}/pull/${{ steps.pr.outputs.number }}'
@@ -0,0 +1,74 @@
+name: CodeQL
+
+# Static analysis (SAST) for TypeScript/JavaScript and Python sources.
+# Findings upload to the GitHub Security tab as SARIF.
+#
+# Advisory only on first introduction — see docs/plans/2026-05-03-001-feat-automated-security-scans-plan.md.
+# Promote to a required check after baseline triage (operator decision).
+
+on:
+  pull_request:
+    branches: [main]
+    paths-ignore: ['**.md', 'docs/**', 'LICENSE']
+  push:
+    branches: [main]
+  schedule:
+    # Weekly Monday 06:00 UTC — catches advisories newly published against
+    # already-merged code without waiting for the next PR.
+    - cron: '0 6 * * 1'
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    permissions:
+      actions: read
+      contents: read
+      # security-events:write is what enables SARIF upload to the Security tab.
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [javascript-typescript, python]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          # Don't leave GITHUB_TOKEN in .git/config for downstream steps to read.
+          persist-credentials: false
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@e46ed2cbd01164d986452f91f178727624ae40d7 # v4.35.3
+        with:
+          languages: ${{ matrix.language }}
+          queries: security-and-quality
+          # Exclude generated/vendored code; tune after first-run signal.
+          # gitnexus/vendor/ holds tree-sitter-proto sources (regenerated, not authored).
+          # CodeQL path filters use .gitignore-style globs and do NOT support
+          # brace expansion — list each generated parser file separately.
+          config: |
+            paths-ignore:
+              - '**/dist/**'
+              - '**/node_modules/**'
+              - 'gitnexus/vendor/**'
+              - 'gitnexus/src/core/parsing/**/parser.c'
+              - 'gitnexus/src/core/parsing/**/parser.js'
+              # Test fixtures are intentionally synthetic inputs (broken/unused
+              # code, malformed samples) used to exercise the analyzer. CodeQL
+              # findings here are noise, not real bugs.
+              - '**/test/fixtures/**'
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@e46ed2cbd01164d986452f91f178727624ae40d7 # v4.35.3
+        with:
+          category: '/language:${{ matrix.language }}'
@@ -0,0 +1,39 @@
+name: Dependency Review
+
+# Blocks PRs that introduce dependencies with high/critical known vulnerabilities.
+# Reads the dependency graph diff between PR head and base.
+#
+# This is a required-check candidate after one week of clean runs
+# (operator decision — see docs/plans/2026-05-03-001-feat-automated-security-scans-plan.md).
+
+on:
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  review:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+      # pull-requests:write enables the inline summary comment on failure.
+      pull-requests: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Dependency Review
+        uses: actions/dependency-review-action@2031cfc080254a8a887f58cffee85186f0e49e48 # v4.9.0
+        with:
+          fail-on-severity: high
+          comment-summary-in-pr: on-failure
@@ -26,6 +26,9 @@ on:
        required: true
        type: string

+permissions:
+  contents: read
+
 # Concurrency convention: see CONTRIBUTING.md → "GitHub Actions — Concurrency Convention".
 # Tag refs are unique per release, so distinct tags run in parallel.
 # Re-pushes of the same tag serialize. cancel-in-progress: false — never cancel a publish mid-flight.
@@ -0,0 +1,48 @@
+name: Gitleaks
+
+# Deterministic in-CI secret scanning. Defense-in-depth on top of GitHub's
+# native secret-scanning push protection (which is a repo Settings toggle —
+# see SECURITY.md for the recommended admin action).
+#
+# PR runs scan the diff (fast); main pushes scan full history.
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  gitleaks:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+      pull-requests: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          # Full history needed for the on-push full-history scan; on PRs the
+          # action diffs against the base ref so the cost is bounded by the PR.
+          fetch-depth: 0
+          # Don't bake the token into the cloned .git/config; downstream
+          # steps (and Gitleaks itself) don't need it for repo operations.
+          persist-credentials: false
+
+      # No GITLEAKS_LICENSE secret is required for OSS / public-repo usage.
+      # If this repo becomes private, the action will require a license key.
+      - name: Gitleaks
+        uses: gitleaks/gitleaks-action@ff98106e4c7b2bc287b24eaf42907196329070c7 # v2.3.9
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITLEAKS_ENABLE_UPLOAD_ARTIFACT: true
+          GITLEAKS_ENABLE_SUMMARY: true
@@ -0,0 +1,595 @@
+name: PR Autofix (apply)
+
+# CHATOPS HALF of the autofix pipeline.
+#
+# Triggered when a contributor comments `/autofix` on a PR. Validates
+# permission, locates the most recent successful `pr-autofix.yml`
+# artifact for the PR's current head SHA, applies the patch to the PR
+# head, and pushes a commit back to the PR branch.
+#
+# This workflow runs from the default branch's copy of the file
+# regardless of where the comment originates -- that's the trust
+# anchor. Comment body and author login are untrusted; both flow
+# through env vars and pattern-matched, never interpolated into shell.
+#
+# Fork PR support: `git push` with the GITHUB_TOKEN succeeds against
+# fork branches only when the contributor enabled "Allow edits by
+# maintainers" on the PR (the default). When they disabled it, we
+# fail loud with a 👎 reaction and an explanation comment.
+
+on:
+  issue_comment:
+    types: [created]
+
+concurrency:
+  # Per-PR scope. issue_comment events expose `github.event.issue.number`
+  # for both PR and Issue comments; the `pull_request != null` guard on
+  # the job ensures we only run on PRs, so this number is the PR number.
+  # cancel-in-progress: false — a second `/autofix` should wait for the
+  # first to finish (idempotency check on the second invocation handles
+  # the no-op case).
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.event.issue.number }}
+  cancel-in-progress: false
+
+permissions: {}
+
+jobs:
+  apply:
+    name: apply-autofix
+    # Pre-filter at the workflow level so non-PR comments and unrelated
+    # comments don't even spawn a runner. The job-level body re-check
+    # below (Step 1) is the strict gate.
+    if: >-
+      github.event.issue.pull_request != null
+      && startsWith(github.event.comment.body, '/autofix')
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      # React on the triggering comment + post reply comments.
+      pull-requests: write
+      # Push the apply commit to the PR head branch.
+      contents: write
+      # Required by actions/download-artifact to fetch artifacts produced
+      # by a different workflow run.
+      actions: read
+    steps:
+      - name: Validate comment body precisely
+        id: body
+        env:
+          BODY: ${{ github.event.comment.body }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          # Whole-line, case-sensitive match: `^/autofix\s*$`. The
+          # workflow-level startsWith guard is coarse — `please don't
+          # /autofix this code` would pass that filter but fail this one.
+          # We exit silently (no reaction) on body mismatch so quoted
+          # text in unrelated discussions doesn't get a visible response.
+          if [[ ! "${BODY}" =~ ^/autofix[[:space:]]*$ ]]; then
+            echo "Body did not match strict /autofix regex — exiting silently."
+            echo "match=false" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+          echo "match=true" >> "$GITHUB_OUTPUT"
+
+      - name: Validate commenter permission
+        id: perm
+        if: steps.body.outputs.match == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          COMMENTER: ${{ github.event.comment.user.login }}
+          PR_AUTHOR: ${{ github.event.issue.user.login }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          # Retry wrapper for transient 5xx / 429 / network blips.
+          # Mirrors the helper in pr-autofix-publish.yml. Used on
+          # idempotent GETs only; reactions/comment-POSTs are NOT
+          # wrapped (retrying a POST would dupe the resource).
+          gh_retry() {
+            local n=0 max=3
+            while true; do
+              if gh "$@"; then return 0; fi
+              n=$((n+1))
+              if [ "$n" -ge "$max" ]; then return 1; fi
+              sleep $((n * 2))
+            done
+          }
+
+          # Allowlist the commenter login before it flows into a URL.
+          # GitHub usernames: alphanumeric + dashes, max 39 chars.
+          if ! [[ "${COMMENTER}" =~ ^[A-Za-z0-9-]{1,39}$ ]]; then
+            echo "::error::Invalid commenter login format: $(printf '%q' "${COMMENTER}")"
+            echo "allowed=false" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Self-comparison: PR author can always /autofix their own PR.
+          if [ "${COMMENTER}" = "${PR_AUTHOR}" ]; then
+            echo "Commenter is PR author — granting access."
+            echo "allowed=true" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Repo permission lookup. admin/write/maintain are sufficient.
+          # Distinguish API failure (5xx, 429, network) from genuine
+          # permission denial (404 = not a collaborator). Conflating them
+          # would silently refuse a legitimate maintainer with a public
+          # 👎 every time GitHub blips. gh_retry handles transient blips;
+          # the stderr-grep distinguishes 404 from persistent failure.
+          perm_stderr=$(mktemp)
+          if permission=$(gh_retry api "repos/${GH_REPO}/collaborators/${COMMENTER}/permission" \
+                --jq '.permission' 2>"$perm_stderr"); then
+            echo "Commenter permission: ${permission}"
+            case "${permission}" in
+              admin|write|maintain)
+                echo "allowed=true" >> "$GITHUB_OUTPUT"
+                ;;
+              *)
+                echo "allowed=false" >> "$GITHUB_OUTPUT"
+                ;;
+            esac
+          else
+            err=$(cat "$perm_stderr")
+            echo "Permission lookup stderr: ${err}" >&2
+            # 404 (not a collaborator) is a genuine deny.
+            # Anything else is a transient API/network failure.
+            if grep -qE "HTTP 404|Not Found" "$perm_stderr"; then
+              echo "allowed=false" >> "$GITHUB_OUTPUT"
+            else
+              echo "::error::Permission lookup failed transiently — refusing to act."
+              echo "allowed=api-failed" >> "$GITHUB_OUTPUT"
+            fi
+          fi
+
+      - name: React 😕 on transient permission-API failure
+        if: steps.body.outputs.match == 'true' && steps.perm.outputs.allowed == 'api-failed'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          COMMENT_ID: ${{ github.event.comment.id }}
+          PR: ${{ github.event.issue.number }}
+          RUN_ID: ${{ github.run_id }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+            -f content="confused" >/dev/null
+          gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+            -f body="⚠️ Couldn't verify your repo permission (transient GitHub API failure). Please comment \`/autofix\` again. ([apply run](https://github.com/${GH_REPO}/actions/runs/${RUN_ID}))" \
+            >/dev/null
+          exit 1
+
+      - name: React 👎 on permission denial
+        if: steps.body.outputs.match == 'true' && steps.perm.outputs.allowed == 'false'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          COMMENT_ID: ${{ github.event.comment.id }}
+          PR: ${{ github.event.issue.number }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+            -f content="-1" >/dev/null
+          gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+            -f body="🚫 \`/autofix\` is restricted to users with write access or the PR author. Comment ignored." \
+            >/dev/null
+          # Hard exit so the rest of the job is skipped.
+          exit 1
+
+      - name: React 👀 to acknowledge
+        if: steps.perm.outputs.allowed == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          COMMENT_ID: ${{ github.event.comment.id }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+            -f content="eyes" >/dev/null
+
+      - name: Resolve PR head and locate autofix run
+        id: locate
+        if: steps.perm.outputs.allowed == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          PR: ${{ github.event.issue.number }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          # Same retry wrapper used in the permission step, repeated
+          # because each YAML `run:` block is a fresh bash session.
+          gh_retry() {
+            local n=0 max=3
+            while true; do
+              if gh "$@"; then return 0; fi
+              n=$((n+1))
+              if [ "$n" -ge "$max" ]; then return 1; fi
+              sleep $((n * 2))
+            done
+          }
+
+          # Fetch PR metadata. All fields here are server-controlled API
+          # output, but we still allowlist before exporting so anything
+          # weird short-circuits before $GITHUB_OUTPUT. Wrapped in
+          # gh_retry so transient blips don't surface as "no autofix run
+          # found" with a wrong remediation.
+          if ! pr_json=$(gh_retry api "repos/${GH_REPO}/pulls/${PR}"); then
+            echo "::error::PR metadata fetch failed after retries."
+            echo "found_status=api-failed" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+          head_sha=$(jq -r '.head.sha' <<< "${pr_json}")
+          head_ref=$(jq -r '.head.ref' <<< "${pr_json}")
+          head_repo=$(jq -r '.head.repo.full_name' <<< "${pr_json}")
+
+          [[ "${head_sha}"  =~ ^[0-9a-f]{40}$                         ]] || { echo "::error::Bad head_sha";  exit 1; }
+          [[ "${head_ref}"  =~ ^[A-Za-z0-9._/-]+$                     ]] || { echo "::error::Bad head_ref";  exit 1; }
+          [[ "${head_repo}" =~ ^[A-Za-z0-9._-]+/[A-Za-z0-9._-]+$      ]] || { echo "::error::Bad head_repo"; exit 1; }
+
+          # Find the latest successful pr-autofix.yml run for this head SHA.
+          if ! runs_json=$(gh_retry api "repos/${GH_REPO}/actions/workflows/pr-autofix.yml/runs?head_sha=${head_sha}&per_page=10"); then
+            echo "::error::Workflow run lookup failed after retries."
+            echo "found_status=api-failed" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          run_id=$(jq -r '[.workflow_runs[] | select(.conclusion == "success")] | .[0].id // empty' <<< "${runs_json}")
+
+          if [ -n "${run_id}" ] && [[ "${run_id}" =~ ^[0-9]+$ ]]; then
+            echo "found_status=success" >> "$GITHUB_OUTPUT"
+            {
+              echo "found=true"
+              echo "head_sha=${head_sha}"
+              echo "head_ref=${head_ref}"
+              echo "head_repo=${head_repo}"
+              echo "run_id=${run_id}"
+            } >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # No successful run. Distinguish "still running" (producer in
+          # flight after a recent push) from "never ran / all failed".
+          # in_progress / queued / pending / waiting cover the GitHub
+          # workflow-run lifecycle states that precede success/failure.
+          in_progress=$(jq -r '[.workflow_runs[] | select(.status == "in_progress" or .status == "queued" or .status == "pending" or .status == "waiting")] | length' <<< "${runs_json}")
+          if [ "${in_progress:-0}" -gt 0 ]; then
+            echo "::warning::pr-autofix run is still in progress for head ${head_sha}."
+            echo "found_status=in-progress" >> "$GITHUB_OUTPUT"
+          else
+            echo "::warning::No successful pr-autofix run found for head ${head_sha}."
+            echo "found_status=not-found" >> "$GITHUB_OUTPUT"
+          fi
+          # Existing `found` boolean is preserved so downstream gates
+          # (`steps.locate.outputs.found == 'true'`) still work.
+          echo "found=false" >> "$GITHUB_OUTPUT"
+
+      - name: Reply when locate did not yield a usable run
+        if: steps.perm.outputs.allowed == 'true' && steps.locate.outputs.found != 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          COMMENT_ID: ${{ github.event.comment.id }}
+          PR: ${{ github.event.issue.number }}
+          FOUND_STATUS: ${{ steps.locate.outputs.found_status }}
+          RUN_ID: ${{ github.run_id }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          run_url="https://github.com/${GH_REPO}/actions/runs/${RUN_ID}"
+          case "${FOUND_STATUS}" in
+            in-progress)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="confused" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⏳ A pr-autofix run is still in progress for this PR's current head SHA. Wait for it to finish, then comment \`/autofix\` again. ([apply run](${run_url}))" \
+                >/dev/null
+              ;;
+            api-failed)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="confused" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⚠️ Couldn't reach the GitHub API to look up the autofix run (transient failure after retries). Please comment \`/autofix\` again. ([apply run](${run_url}))" \
+                >/dev/null
+              ;;
+            *)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="-1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="🤔 No successful autofix run found for this PR's current head SHA. Push a new commit to trigger one, then comment \`/autofix\` again." \
+                >/dev/null
+              ;;
+          esac
+          exit 1
+
+      # Pinned to v8.0.1. Same SHA as pr-autofix-publish.yml.
+      # `continue-on-error: true` lets the workflow proceed when the
+      # artifact is expired or pruned (1-day retention). The apply
+      # step distinguishes "patch file missing entirely" (artifact-
+      # expired) from "patch file zero bytes" (genuinely empty patch).
+      - name: Download autofix artifact
+        if: steps.locate.outputs.found == 'true'
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        continue-on-error: true
+        with:
+          name: autofix
+          run-id: ${{ steps.locate.outputs.run_id }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path: autofix-in
+
+      # Pinned to v5.0.4. Verify SHA via:
+      #   gh api repos/actions/checkout/git/refs/tags/v5.0.4
+      #
+      # `persist-credentials: false` disables the default behavior where
+      # actions/checkout writes the GITHUB_TOKEN into `.git/config` as an
+      # extraheader. That default is convenient (subsequent git commands
+      # auth automatically) but it means the token is sitting on disk in
+      # the checkout directory — an `actions/upload-artifact` step on
+      # this directory would leak the token. We don't upload, but
+      # zizmor's `credential-persistence` lint flags it defensively.
+      # Push auth is provided inline at push time via the URL.
+      - name: Checkout PR head
+        if: steps.locate.outputs.found == 'true'
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v5.0.4
+        with:
+          repository: ${{ steps.locate.outputs.head_repo }}
+          ref: ${{ steps.locate.outputs.head_sha }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          persist-credentials: false
+          # Fetch full history so the push doesn't hit shallow-clone errors.
+          fetch-depth: 0
+          path: pr-checkout
+
+      - name: Apply patch and push
+        id: apply
+        if: steps.locate.outputs.found == 'true'
+        env:
+          HEAD_REF: ${{ steps.locate.outputs.head_ref }}
+          HEAD_REPO: ${{ steps.locate.outputs.head_repo }}
+          # The SHA we resolved earlier in `locate` — this is what the
+          # remote ref MUST still equal at push time. If the contributor
+          # force-pushed between resolve and now, the lease fails and
+          # we surface that distinctly from a fork-without-maintainer
+          # -edit push failure.
+          HEAD_SHA: ${{ steps.locate.outputs.head_sha }}
+          # Auth for the push only — never persisted to disk. Provided
+          # via env to avoid interpolating into the shell command line.
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        working-directory: pr-checkout
+        run: |
+          set -euo pipefail
+          patch="../autofix-in/autofix.patch"
+
+          # Distinguish artifact-expired (file missing entirely, because
+          # actions/download-artifact ran with continue-on-error and the
+          # 1-day retention had elapsed) from genuinely empty patch
+          # (file present, zero bytes, formatter found nothing).
+          if [ ! -e "$patch" ]; then
+            echo "::warning::Patch file does not exist — autofix artifact likely expired."
+            echo "result=artifact-expired" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          if [ ! -s "$patch" ]; then
+            echo "::warning::Empty patch — nothing to apply."
+            echo "result=empty-patch" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Sensitive-paths guard: refuse to apply patches that touch
+          # `.github/` — workflow files, action definitions, CODEOWNERS,
+          # dependabot config, etc. A malicious PR could ship a custom
+          # prettier/ESLint config that reformats workflow YAML; the
+          # producer would then capture those edits in autofix.patch,
+          # and a maintainer running `/autofix` would push them under
+          # `contents: write`. The default GITHUB_TOKEN lacks `workflows`
+          # scope so the platform would reject workflow-file pushes
+          # anyway, but that surfaces as a generic `push-failed` and
+          # misleads users into enabling maintainer-edit. Reject early
+          # with a specific reason. CODEOWNERS and dependabot.yml live
+          # under .github/ but outside .github/workflows/ — the broader
+          # match is intentional (they all govern trust boundaries).
+          if grep -qE '^(diff --git|---|\+\+\+) [ab]?/?\.github/' "$patch"; then
+            echo "::warning::Patch touches .github/ — refusing to apply (sensitive paths)."
+            echo "result=sensitive-paths" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Re-entrancy guard: if HEAD itself is an autofix bot commit,
+          # refuse to apply again. Without this, lint/formatter config
+          # drift between runs could pump arbitrary apply commits into
+          # the same PR if an automated agent watches the sticky and
+          # re-fires `/autofix` on each new "fixes-available" surface.
+          # The contributor can still get out by force-pushing a
+          # human-authored commit to revert the autofix and re-trigger.
+          head_author=$(git log -1 --format='%ae' HEAD)
+          head_subject=$(git log -1 --format='%s' HEAD)
+          if [ "${head_author}" = "41898282+github-actions[bot]@users.noreply.github.com" ] \
+             && [[ "${head_subject}" =~ ^chore\(autofix\) ]]; then
+            echo "::warning::HEAD is an autofix bot commit — refusing to re-apply (loop guard)."
+            echo "result=loop-prevented" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Idempotency probe: does the forward apply work?
+          if git apply --check "$patch" 2>/dev/null; then
+            echo "Patch applies cleanly — proceeding."
+          elif git apply --check --reverse "$patch" 2>/dev/null; then
+            # Reverse-check passes => the patch is already applied to
+            # the current tree. Treat as success no-op.
+            echo "Patch is already applied (reverse-check passed) — no-op."
+            echo "result=already-applied" >> "$GITHUB_OUTPUT"
+            exit 0
+          else
+            echo "::error::Patch does not apply (stale or conflicting)."
+            echo "result=stale" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Wrap the apply/commit phase so any non-zero exit sets a
+          # meaningful `result=` instead of leaving it unset (which would
+          # send the user to the `*` "unexpected state" arm with a
+          # non-actionable confused-emoji reply).
+          if ! {
+            git config user.email "41898282+github-actions[bot]@users.noreply.github.com" &&
+            git config user.name  "github-actions[bot]" &&
+            git apply "$patch" &&
+            git add -A &&
+            git commit -m "chore(autofix): apply prettier + eslint fixes via /autofix command"
+          }; then
+            echo "::error::git apply / config / commit failed after idempotency probe passed."
+            echo "result=apply-failed" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Push to the PR head branch with a lease against the resolved
+          # SHA. The lease ensures the remote ref still points at HEAD_SHA
+          # when the push lands — if the contributor force-pushed in the
+          # window between resolve and now, the lease fails and we return
+          # `lease-failed` (NOT `push-failed`, which would mislead users
+          # into enabling maintainer-edit). For fork PRs, the push still
+          # requires "Allow edits by maintainers" to be enabled.
+          #
+          # Auth is supplied inline via `-c http.<base>.extraheader` (NOT
+          # via a `https://x-access-token:TOKEN@…` URL — those leak into
+          # process listings and `git remote -v` output). The header is
+          # set per-invocation; it never lands in `.git/config` on disk.
+          # The token is base64-encoded for the Basic auth header per
+          # GitHub's documented pattern for this scope.
+          push_url="https://github.com/${HEAD_REPO}.git"
+          auth_header="Authorization: Basic $(printf 'x-access-token:%s' "${GITHUB_TOKEN}" | base64 -w0)"
+          # GitHub's secret-masker only masks the raw token, not its
+          # base64-encoded form. Mask the encoded value so any subsequent
+          # log line (set -x, GIT_TRACE, error spew) gets ***-redacted.
+          echo "::add-mask::${auth_header}"
+          push_stderr=$(mktemp)
+          if git -c http.extraheader="${auth_header}" \
+                push --force-with-lease="refs/heads/${HEAD_REF}:${HEAD_SHA}" \
+                "${push_url}" "HEAD:${HEAD_REF}" 2>"$push_stderr"; then
+            echo "result=applied" >> "$GITHUB_OUTPUT"
+          else
+            cat "$push_stderr" >&2
+            # `--force-with-lease` reports "stale info" when the remote
+            # ref has moved past the expected SHA. Other lease-failure
+            # phrases git emits include "remote rejected" (server-side
+            # reject), "non-fast-forward", and the literal flag name. Match
+            # any of those to distinguish from auth/network/maintainer-
+            # edit failures.
+            if grep -qE "stale info|force-with-lease|rejected.*non-fast-forward|remote rejected|! \[rejected\]" "$push_stderr"; then
+              echo "::error::git push lease failed — branch moved during apply."
+              echo "result=lease-failed" >> "$GITHUB_OUTPUT"
+            else
+              echo "::error::git push failed — likely fork without maintainer-edit enabled."
+              echo "result=push-failed" >> "$GITHUB_OUTPUT"
+            fi
+            exit 0
+          fi
+
+      - name: React and reply on outcome
+        if: always() && steps.locate.outputs.found == 'true' && steps.apply.outcome != 'skipped'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          COMMENT_ID: ${{ github.event.comment.id }}
+          PR: ${{ github.event.issue.number }}
+          RESULT: ${{ steps.apply.outputs.result }}
+          RUN_ID: ${{ github.run_id }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          run_url="https://github.com/${GH_REPO}/actions/runs/${RUN_ID}"
+
+          case "${RESULT}" in
+            applied)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="+1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="✅ Applied autofix and pushed a commit. ([apply run](${run_url}))" \
+                >/dev/null
+              ;;
+            already-applied)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="+1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="✅ Autofix is already applied — no changes needed." \
+                >/dev/null
+              ;;
+            empty-patch)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="+1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="✅ No autofix to apply — formatter found nothing." \
+                >/dev/null
+              ;;
+            artifact-expired)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="confused" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⏳ The autofix artifact for this PR's head SHA has expired (1-day retention). Push a new commit to regenerate it, then comment \`/autofix\` again. ([apply run](${run_url}))" \
+                >/dev/null
+              exit 1
+              ;;
+            loop-prevented)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="confused" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="🔁 Refusing to re-apply autofix on top of an existing autofix commit. If formatter rules drifted and you genuinely need another pass, push a human-authored commit (or revert the existing autofix commit) before commenting \`/autofix\` again. ([apply run](${run_url}))" \
+                >/dev/null
+              exit 1
+              ;;
+            sensitive-paths)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="-1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="🛑 Refusing to apply: the autofix patch touches files under \`.github/\` (workflow / CODEOWNERS / dependabot config). Apply formatter changes to those files manually in a regular commit so they get human review. ([apply run](${run_url}))" \
+                >/dev/null
+              exit 1
+              ;;
+            stale)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="-1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⚠️ The autofix patch is stale or conflicts with the current head — push a new commit to regenerate, then comment \`/autofix\` again. ([apply run](${run_url}))" \
+                >/dev/null
+              exit 1
+              ;;
+            apply-failed)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="-1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⚠️ Autofix applied cleanly in the dry run, but \`git apply\` / \`git commit\` failed when actually landing the patch. This usually means a race with concurrent edits or a corrupt patch. See logs: ${run_url}" \
+                >/dev/null
+              exit 1
+              ;;
+            push-failed)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="-1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⚠️ Couldn't push the autofix commit. If this is a fork PR, please tick **Allow edits by maintainers** in the PR sidebar, then comment \`/autofix\` again. ([apply run](${run_url}))" \
+                >/dev/null
+              exit 1
+              ;;
+            lease-failed)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="-1" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="⚠️ The PR head moved while autofix was applying — a new commit landed in the window between resolve and push. Comment \`/autofix\` again to retry against the latest head. ([apply run](${run_url}))" \
+                >/dev/null
+              exit 1
+              ;;
+            *)
+              gh api -X POST "repos/${GH_REPO}/issues/comments/${COMMENT_ID}/reactions" \
+                -f content="confused" >/dev/null
+              gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+                -f body="❓ Autofix run finished in an unexpected state (\`${RESULT:-unknown}\`). See logs: ${run_url}" \
+                >/dev/null
+              exit 1
+              ;;
+          esac
@@ -0,0 +1,316 @@
+name: PR Autofix (publish)
+
+# TRUSTED HALF of the autofix pipeline.
+#
+# Triggered by `pr-autofix.yml` completing on a PR (including fork PRs).
+# Downloads the diff artifact produced by the untrusted job, verifies
+# its claimed PR identity against the workflow_run authority, then
+# posts (or edits) a single sticky summary comment plus a
+# `gitnexus/autofix` Check Run. This job NEVER checks out fork code —
+# it only consumes the diff (data) and calls the GitHub API. That
+# isolation is what makes it safe to run under `pull-requests: write`
+# on fork-triggered events.
+#
+# The sticky comment is the contributor signal: heading
+# "## :sparkles: PR Autofix" in the PR's top-level comments, with a
+# fenced `gitnexus-autofix` JSON block carrying machine-readable state
+# for AI agents. Contributors apply the patch by commenting `/autofix`
+# on the PR — handled by the separate `pr-autofix-apply.yml` workflow.
+
+on:
+  workflow_run:
+    workflows: ['PR Autofix']
+    types: [completed]
+
+concurrency:
+  # Key on PR identity, NOT workflow_run.id — workflow_run.id is per-run
+  # unique, which would defeat serialization and let two parallel
+  # publishes both POST a sticky summary comment. CONTRIBUTING.md
+  # § GitHub Actions — Concurrency Convention names this anti-pattern
+  # explicitly. For fork PRs, `pull_requests[]` is empty in the
+  # workflow_run payload, so we fall back to head-repo + head-branch.
+  group: ${{ github.workflow }}-${{ github.event.workflow_run.pull_requests[0].number || format('{0}/{1}', github.event.workflow_run.head_repository.full_name, github.event.workflow_run.head_branch) }}
+  cancel-in-progress: false
+
+permissions: {}
+
+jobs:
+  publish:
+    name: publish-autofix
+    if: >-
+      github.event.workflow_run.event == 'pull_request'
+      && github.event.workflow_run.conclusion == 'success'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      pull-requests: write
+      # Required by actions/download-artifact to fetch artifacts produced
+      # by a different workflow run.
+      actions: read
+      # Required to create the `gitnexus/autofix` Check Run that reports
+      # the outcome (clean / fixes-available) to the PR's Checks tab.
+      # Branch protection or agents can grep the conclusion + output
+      # title without parsing the sticky comment.
+      checks: write
+    steps:
+      # Pinned to v8.0.1. Verify SHA via:
+      #   gh api repos/actions/download-artifact/git/refs/tags/v8.0.1
+      - name: Download autofix artifact
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: autofix
+          run-id: ${{ github.event.workflow_run.id }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path: autofix-in
+
+      - name: Read and validate metadata
+        id: meta
+        shell: bash
+        run: |
+          set -euo pipefail
+          test -f autofix-in/metadata.json
+          jq . autofix-in/metadata.json
+
+          # The artifact comes from the untrusted half running fork code.
+          # Every field is allowlist-validated before it can flow into
+          # $GITHUB_OUTPUT. A newline in head_ref would otherwise let a
+          # malicious branch name inject a second `pr_number=N` line and
+          # redirect this job's reviewdog suggestions / sticky summary
+          # comment onto a victim PR under github-actions[bot] with
+          # pull-requests: write.
+          assert_field() {
+            local key="$1" pattern="$2" value
+            value=$(jq -r ".${key} // empty" autofix-in/metadata.json)
+            if [ -z "$value" ] || ! [[ "$value" =~ $pattern ]]; then
+              echo "::error::metadata.${key} failed allowlist (got: $(printf '%q' "$value"))"
+              exit 1
+            fi
+            printf '%s' "$value"
+          }
+
+          SCHEMA=$(assert_field    schema         '^gitnexus\.pr-autofix/v[0-9]+$')
+          PR_NUMBER=$(assert_field pr_number      '^[0-9]+$')
+          HEAD_SHA=$(assert_field  head_sha       '^[0-9a-f]{40}$')
+          HEAD_REF=$(assert_field  head_ref       '^[A-Za-z0-9._/-]+$')
+          HEAD_REPO=$(assert_field head_repo      '^[A-Za-z0-9._-]+/[A-Za-z0-9._-]+$')
+          BASE_REPO=$(assert_field base_repo      '^[A-Za-z0-9._-]+/[A-Za-z0-9._-]+$')
+          CHANGED=$(assert_field   changed_lines  '^[0-9]+$')
+
+          # Defence-in-depth: refuse to act if the artifact claims to
+          # belong to a different repo than the one that triggered us.
+          if [ "$BASE_REPO" != "${GITHUB_REPOSITORY}" ]; then
+            echo "::error::Artifact base_repo does not match \$GITHUB_REPOSITORY — refusing to publish."
+            exit 1
+          fi
+
+          {
+            echo "schema=${SCHEMA}"
+            echo "pr_number=${PR_NUMBER}"
+            echo "head_sha=${HEAD_SHA}"
+            echo "head_ref=${HEAD_REF}"
+            echo "head_repo=${HEAD_REPO}"
+            echo "base_repo=${BASE_REPO}"
+            echo "changed_lines=${CHANGED}"
+          } >> "$GITHUB_OUTPUT"
+
+      # Cross-verify the artifact's claimed identity against the
+      # GitHub-controlled workflow_run event. The previous step's
+      # allowlist only proves the fields are well-formed — not that
+      # they refer to the PR/SHA that actually triggered this run.
+      # A fork-controlled `npm run lint:fix` could plausibly mutate
+      # metadata.json to reference another PR or SHA, redirecting our
+      # write-scoped sticky/check-run onto an attacker-chosen target.
+      #
+      # Authority sources are all server-controlled GitHub event fields:
+      #   - workflow_run.head_sha
+      #   - workflow_run.head_repository.full_name
+      #   - workflow_run.pull_requests[].number  (within-repo PRs only;
+      #     empty array on fork PRs — fall back to commits/{sha}/pulls)
+      #
+      # Mismatch => fail loud BEFORE any sticky/check-run side effect.
+      - name: Verify metadata against workflow_run authority
+        id: verify
+        if: steps.meta.outputs.changed_lines != '0'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          META_PR_NUMBER: ${{ steps.meta.outputs.pr_number }}
+          META_HEAD_SHA: ${{ steps.meta.outputs.head_sha }}
+          META_HEAD_REPO: ${{ steps.meta.outputs.head_repo }}
+          WF_HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
+          WF_HEAD_REPO: ${{ github.event.workflow_run.head_repository.full_name }}
+          WF_PR_NUMBERS: ${{ toJSON(github.event.workflow_run.pull_requests.*.number) }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          # 1) head_sha must match exactly. workflow_run.head_sha is the
+          # commit GitHub actually ran the producer against — definitive.
+          if [ "${META_HEAD_SHA}" != "${WF_HEAD_SHA}" ]; then
+            echo "::error::Artifact head_sha (${META_HEAD_SHA}) does not match workflow_run.head_sha (${WF_HEAD_SHA}) — refusing to publish."
+            exit 1
+          fi
+
+          # 2) head_repo must match exactly. Same authority anchor.
+          if [ "${META_HEAD_REPO}" != "${WF_HEAD_REPO}" ]; then
+            echo "::error::Artifact head_repo (${META_HEAD_REPO}) does not match workflow_run.head_repository (${WF_HEAD_REPO}) — refusing to publish."
+            exit 1
+          fi
+
+          # 3) pr_number must reference an open PR with this head SHA.
+          # Within-repo PRs: workflow_run.pull_requests[] is populated.
+          # Fork PRs: that array is empty by GitHub design — fall back
+          # to the REST commit-to-PRs lookup. Fail closed if the lookup
+          # finds no matching open PR (avoids attacker-forged PR ids).
+          allowed_numbers=$(jq -c '.' <<< "${WF_PR_NUMBERS}")
+          if [ "${allowed_numbers}" = "[]" ]; then
+            echo "workflow_run.pull_requests is empty (fork PR) — falling back to commits/{sha}/pulls."
+            allowed_numbers=$(gh api "repos/${GH_REPO}/commits/${WF_HEAD_SHA}/pulls" \
+              --jq '[.[] | select(.state == "open") | .number]' 2>/dev/null || echo "[]")
+            if [ "${allowed_numbers}" = "[]" ]; then
+              echo "::error::No open PR found for head ${WF_HEAD_SHA} via commits/{sha}/pulls — refusing to publish."
+              exit 1
+            fi
+          fi
+
+          if ! jq -e --argjson n "${META_PR_NUMBER}" 'index($n) != null' <<< "${allowed_numbers}" >/dev/null; then
+            echo "::error::Artifact pr_number (${META_PR_NUMBER}) is not in the authoritative PR list (${allowed_numbers}) — refusing to publish."
+            exit 1
+          fi
+
+          echo "Verified: metadata identity matches workflow_run authority (PR=${META_PR_NUMBER}, head_sha=${META_HEAD_SHA}, head_repo=${META_HEAD_REPO})."
+
+      - name: Upsert sticky summary comment
+        # Only post when ci-quality found something fixable (= the
+        # autofix patch is non-empty). When prettier/eslint are clean
+        # the patch is zero bytes and the sticky comment is pure noise,
+        # so we skip it.
+        if: >-
+          always()
+          && steps.meta.outputs.pr_number != ''
+          && steps.meta.outputs.changed_lines != '0'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          PR: ${{ steps.meta.outputs.pr_number }}
+          CHANGED: ${{ steps.meta.outputs.changed_lines }}
+          HEAD_SHA: ${{ steps.meta.outputs.head_sha }}
+          RUN_ID: ${{ github.run_id }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          # Stable heading + marker — agents grep for these exact strings.
+          marker="<!-- gitnexus:pr-autofix-summary -->"
+          heading="## :sparkles: PR Autofix"
+
+          # Single state. The /autofix slash command works for any diff
+          # size — there's no 3K cap and no no-overlap dead-end because
+          # the apply workflow uses `git apply` + push, not the GitHub
+          # review-comment API.
+          ui_state="fixes-available"
+          prose="Found fixable formatting / unused-import issues across **${CHANGED}** changed lines. **Comment \`/autofix\` on this PR to apply them**, or run \`npm run lint:fix && npm run format\` locally."
+
+          # Machine-readable JSON block — agents parse this instead of
+          # regexing English. Fenced code-block info string is
+          # `gitnexus-autofix` so agents can locate it without ambiguity.
+          # Schema bumped from v1 -> v2: adds `apply_command`. The v1
+          # field set is preserved as a superset, but the `state` enum
+          # is redefined (v1: suggestions-posted | skipped-too-large |
+          # diff-no-overlap; v2: fixes-available). v1 readers checking
+          # `schema == 'gitnexus.pr-autofix/v1'` see an unfamiliar version
+          # and fall back to prose, which is the intended migration path.
+          json=$(jq -n -c \
+            --arg state        "${ui_state}" \
+            --argjson pr_number "${PR}" \
+            --argjson changed_lines "${CHANGED}" \
+            --arg head_sha     "${HEAD_SHA}" \
+            --arg run_id       "${RUN_ID}" \
+            '{schema:"gitnexus.pr-autofix/v2", state:$state, pr_number:$pr_number, changed_lines:$changed_lines, head_sha:$head_sha, run_id:$run_id, apply_command:"/autofix"}')
+
+          # Multi-line quoted string instead of a column-0 heredoc — YAML's
+          # `run: |` block ends as soon as a content line dedents below the
+          # block's first-line indent, which would mis-parse the workflow.
+          body="${marker}
+          ${heading}
+
+          ${prose}
+
+          \`\`\`gitnexus-autofix
+          ${json}
+          \`\`\`"
+          # Strip the leading 10-space indent that the YAML block requires
+          # so the rendered comment body starts at column 0.
+          body="$(printf '%s\n' "$body" | sed 's/^          //')"
+
+          # Small retry wrapper for transient 5xx / rate-limit responses
+          # on the GitHub REST API. Three tries with linear backoff. We
+          # only retry GET (idempotent) and PATCH on a known comment id
+          # (idempotent). POST is NOT wrapped — retrying a comment-create
+          # would create duplicates if the first attempt actually landed.
+          gh_retry() {
+            local n=0 max=3
+            while true; do
+              if gh "$@"; then return 0; fi
+              n=$((n+1))
+              if [ "$n" -ge "$max" ]; then return 1; fi
+              sleep $((n * 2))
+            done
+          }
+
+          # Find existing bot comment by the marker and edit-in-place; else create.
+          # CRITICAL: filter by `.user.login == "github-actions[bot]"`. A regular
+          # user posting a comment containing the marker would otherwise be the
+          # `head -n1` match; PATCH on someone else's comment 403s, `set -e`
+          # aborts, and the bot is permanently DoS'd for that PR.
+          existing=$(gh_retry api "repos/${GH_REPO}/issues/${PR}/comments" \
+            --paginate --jq ".[] | select(.user.login == \"github-actions[bot]\" and (.body | contains(\"${marker}\"))) | .id" \
+            | head -n1 || true)
+
+          if [ -n "${existing}" ]; then
+            gh_retry api -X PATCH "repos/${GH_REPO}/issues/comments/${existing}" \
+              -f body="${body}" >/dev/null
+            echo "Updated comment ${existing}."
+          else
+            gh api -X POST "repos/${GH_REPO}/issues/${PR}/comments" \
+              -f body="${body}" >/dev/null
+            echo "Created summary comment."
+          fi
+
+      - name: Emit gitnexus/autofix Check Run
+        # Stable check name `gitnexus/autofix` so PR-watching agents can
+        # `gh pr checks <pr>` and read the conclusion + title without
+        # parsing the sticky comment. Two outcomes:
+        #   clean            → conclusion: success
+        #   fixes-available  → conclusion: neutral
+        # `neutral` does not block branch-protection required-checks but
+        # is visually distinct from a green pass.
+        if: always() && steps.meta.outputs.head_sha != ''
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          HEAD_SHA: ${{ steps.meta.outputs.head_sha }}
+          CHANGED: ${{ steps.meta.outputs.changed_lines }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          if [ "${CHANGED}" = "0" ]; then
+            conclusion="success"
+            title="Formatting clean"
+            summary="Prettier and ESLint --fix produced no changes."
+          else
+            conclusion="neutral"
+            title="Autofix available — comment /autofix to apply"
+            summary="Comment \`/autofix\` on this PR to apply formatter + unused-import fixes (works at any diff size). Or run \`npm run lint:fix && npm run format\` locally."
+          fi
+
+          gh api -X POST "repos/${GH_REPO}/check-runs" \
+            -f name="gitnexus/autofix" \
+            -f head_sha="${HEAD_SHA}" \
+            -f status="completed" \
+            -f conclusion="${conclusion}" \
+            -f "output[title]=${title}" \
+            -f "output[summary]=${summary}" \
+            >/dev/null
+          echo "Posted check-run gitnexus/autofix=${conclusion} (${title})"
@@ -0,0 +1,146 @@
+name: PR Autofix
+
+# UNTRUSTED HALF of the autofix pipeline.
+#
+# Runs `npm run lint:fix` + `npm run format` against the PR head
+# (including fork heads) and uploads the resulting diff as an artifact.
+# This job has NO privileged token and CANNOT post to the PR. The trusted
+# `pr-autofix-publish.yml` workflow downloads the artifact via
+# `workflow_run` and posts a sticky summary comment + Check Run.
+# Contributors apply the patch by commenting `/autofix` on the PR —
+# handled by the separate `pr-autofix-apply.yml` ChatOps workflow.
+#
+# Why the split:
+#   ESLint loads plugins from fork-controlled `node_modules`, so running
+#   it in a job with `pull-requests: write` would let a malicious fork PR
+#   ship a poisoned eslint plugin and execute arbitrary code under that
+#   token. By keeping fork code execution in this job (token: read-only)
+#   and posting from a separate trusted job that never touches fork
+#   code, we get the autofix UX for fork PRs without the supply-chain
+#   hole. (See autofix.ci for the same pattern.)
+#
+# Removes unused imports via `eslint-plugin-unused-imports`, already in
+# devDependencies and wired into the `lint` config.
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    # Skip lockfile / generated-file PRs entirely — `action-suggester`
+    # cannot post on diffs > ~3k lines (GitHub returns 406) and these
+    # paths produce massive diffs no human wants suggested back inline.
+    paths-ignore:
+      - '**/package-lock.json'
+      - '**/*.snap'
+      - '**/dist/**'
+      - '**/node_modules/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  # Don't cancel in-flight runs; the publish workflow may already be
+  # downloading the artifact and a cancelled untrusted run produces no
+  # signal at all (worse DX than waiting).
+  cancel-in-progress: false
+
+# This workflow runs untrusted fork code. Top-level deny-all and NO
+# job-level grants — the job can only read its own checkout.
+permissions: {}
+
+jobs:
+  autofix:
+    name: autofix
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          # PR head commit (not the synthetic merge ref) — we need the
+          # exact tree the contributor pushed so suggestions line up.
+          ref: ${{ github.event.pull_request.head.sha }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          persist-credentials: false
+
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version: 22
+          cache: npm
+          cache-dependency-path: package-lock.json
+
+      # `--ignore-scripts` blocks pre/postinstall lifecycle hooks. ESLint
+      # plugins still load from node_modules (that is the actual escape
+      # hatch on a typical fork), but this job has no token to abuse —
+      # which is the whole point of the split.
+      - run: npm ci --ignore-scripts
+
+      - name: ESLint --fix (removes unused imports)
+        run: npm run lint:fix
+        # Lint errors that --fix can't auto-resolve must not block the
+        # diff artifact — partial fixes are still useful as suggestions.
+        continue-on-error: true
+
+      - name: Prettier --write
+        run: npm run format
+        continue-on-error: true
+
+      - name: Capture diff and metadata
+        id: capture
+        # Pass GitHub-context values via env: rather than `${{ }}`
+        # interpolated directly into the bash body. `head.ref` and
+        # `head.repo.full_name` are fork-controlled strings; expanding
+        # them into shell source is the canonical template-injection
+        # vector zizmor flags. Even though this job has `permissions: {}`,
+        # routing through env: makes it impossible for a future scope
+        # grant to turn into RCE. Inside bash, reference as `$HEAD_REF`
+        # etc. — the values are then plain strings, not code.
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          HEAD_REF: ${{ github.event.pull_request.head.ref }}
+          HEAD_REPO: ${{ github.event.pull_request.head.repo.full_name }}
+          BASE_REPO: ${{ github.repository }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p autofix-out
+
+          # Produce a unified diff of the working tree vs. the PR head.
+          # Empty diff => nothing to suggest; the publish job short-circuits.
+          git diff --no-color > autofix-out/autofix.patch
+
+          # NOTE: `changed_lines` is the line-count of the patch file,
+          # (hunk headers + context lines + added/removed). Surfaced in
+          # the sticky comment so contributors and AI agents have a
+          # quick size hint before invoking `/autofix`.
+          changed_lines=$(wc -l < autofix-out/autofix.patch | tr -d ' ')
+          echo "changed_lines=${changed_lines}" >> "$GITHUB_OUTPUT"
+
+          # Carry PR identity over to the trusted job. workflow_run
+          # context is base-repo-only, so the publish job needs these
+          # to call the GitHub PR API on the right resource.
+          # CONTRACT: keep this schema in sync with pr-autofix-publish.yml's
+          # `assert_field` validators and the agent-facing JSON block in
+          # the sticky comment. Bump `schema` when changing field names.
+          jq -n \
+            --arg     schema        'gitnexus.pr-autofix/v1' \
+            --argjson pr_number     "${PR_NUMBER}" \
+            --arg     head_sha      "${HEAD_SHA}" \
+            --arg     head_ref      "${HEAD_REF}" \
+            --arg     head_repo     "${HEAD_REPO}" \
+            --arg     base_repo     "${BASE_REPO}" \
+            --argjson changed_lines "${changed_lines}" \
+            '{schema:$schema, pr_number:$pr_number, head_sha:$head_sha, head_ref:$head_ref, head_repo:$head_repo, base_repo:$base_repo, changed_lines:$changed_lines}' \
+            > autofix-out/metadata.json
+
+          echo "--- metadata ---"
+          cat autofix-out/metadata.json
+          echo "--- diff (head) ---"
+          head -c 2000 autofix-out/autofix.patch || true
+
+      # Pinned to v7.0.1. Verify SHA via:
+      #   gh api repos/actions/upload-artifact/git/refs/tags/v7.0.1
+      - name: Upload autofix artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: autofix
+          path: autofix-out/
+          retention-days: 1
+          if-no-files-found: error
@@ -35,6 +35,9 @@ on:
  pull_request_target:
    types: [opened, edited, reopened]

+permissions:
+  contents: read
+
 # Concurrency convention: see CONTRIBUTING.md → "GitHub Actions — Concurrency Convention".
 # Include `github.event_name` so `pull_request` (validate-title) and
 # `pull_request_target` (autolabel) runs for the same PR do NOT share a slot
@@ -105,7 +108,7 @@ jobs:
      # Pinned to v7.2.0. Verify SHA via:
      #   gh api repos/release-drafter/release-drafter/git/refs/tags/v7.2.0
      # v7 removed `disable-releaser`; use `dry-run: true` to only autolabel.
-      - uses: release-drafter/release-drafter@5de93583980a40bd78603b6dfdcda5b4df377b32 # v7.2.0
+      - uses: release-drafter/release-drafter@563bf132657a13ded0b01fcb723c5a58cdd824e2 # v7.2.1
        with:
          config-name: release-drafter.yml
          dry-run: true
@@ -6,6 +6,7 @@ on:
      - 'v*'

 # No workflow-level permissions — scoped per job below.
+permissions: {}

 # Concurrency convention: see CONTRIBUTING.md → "GitHub Actions — Concurrency Convention".
 # Tag refs are unique per release, so distinct tags run in parallel. Re-pushes of the
@@ -35,10 +36,14 @@ jobs:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
-          node-version: 20
+          node-version: 22
          registry-url: https://registry.npmjs.org
-          cache: npm
-          cache-dependency-path: gitnexus/package-lock.json
+          # Hermetic install for the published artifact — no cache carry-over
+          # from non-tag contexts. setup-node v5+ caches by default when a
+          # packageManager field is present in package.json, so the explicit
+          # opt-out is required to clear the zizmor cache-poisoning audit.
+          # ~30s slower per release; runs rarely.
+          package-manager-cache: false
      - name: Build gitnexus-shared
        run: npm install && npm run build
        working-directory: gitnexus-shared
@@ -123,7 +123,16 @@ jobs:
    runs-on: ubuntu-latest
    timeout-minutes: 20
    permissions:
-      contents: write # push rc tag + marker
+      # The default GITHUB_TOKEN cannot be granted `workflows: write`, so
+      # tag pushes that reach a commit which modified `.github/workflows/**`
+      # are rejected with: "refusing to allow a GitHub App to create or
+      # update workflow ... without `workflows` permission". We pass a
+      # fine-grained PAT (RELEASE_PUSH_TOKEN, scoped to this repo with
+      # Contents: write + Workflows: write) to `actions/checkout` so that
+      # the subsequent `git push --atomic` of the v-tag and rc marker
+      # carries the PAT's identity. Job-level GITHUB_TOKEN keeps its
+      # scoped permissions for everything else (npm provenance, etc.).
+      contents: write # push rc tag + marker (via PAT)
      id-token: write # npm provenance
    outputs:
      vtag: ${{ steps.reltag.outputs.vtag }}
@@ -132,13 +141,21 @@ jobs:
        with:
          fetch-depth: 0
          fetch-tags: true
+          # Use the PAT so `origin` is preauthed for `git push`. Without
+          # this the default GITHUB_TOKEN is wired into the remote, and a
+          # workflows-touching tag push is rejected — see the permissions
+          # block above.
+          token: ${{ secrets.RELEASE_PUSH_TOKEN }}

      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
-          node-version: 20
+          node-version: 22
          registry-url: https://registry.npmjs.org
-          cache: npm
-          cache-dependency-path: gitnexus/package-lock.json
+          # Hermetic install — release-candidate produces shipped artifacts.
+          # setup-node v5+ caches by default when a packageManager field is
+          # present in package.json; explicit opt-out is required to clear
+          # the zizmor cache-poisoning audit. See cache-poisoning audit.
+          package-manager-cache: false

      - name: Build gitnexus-shared
        run: npm install && npm run build
@@ -277,9 +294,11 @@ jobs:
            fi
          fi

-          echo "base=$BASE"             >> "$GITHUB_OUTPUT"
-          echo "rc_n=$NEXT_N"           >> "$GITHUB_OUTPUT"
-          echo "rc_version=$RC_VERSION" >> "$GITHUB_OUTPUT"
+          {
+            echo "base=$BASE"
+            echo "rc_n=$NEXT_N"
+            echo "rc_version=$RC_VERSION"
+          } >> "$GITHUB_OUTPUT"

      - name: Apply rc version in-CI
        shell: bash
@@ -337,9 +356,11 @@ jobs:
          # remote ref, the push fails and we stop before npm publish.
          git push --atomic origin "refs/tags/$VTAG" "refs/tags/$MARKER"

-          echo "vtag=$VTAG"     >> "$GITHUB_OUTPUT"
-          echo "marker=$MARKER" >> "$GITHUB_OUTPUT"
-          echo "release_sha=$RELEASE_SHA" >> "$GITHUB_OUTPUT"
+          {
+            echo "vtag=$VTAG"
+            echo "marker=$MARKER"
+            echo "release_sha=$RELEASE_SHA"
+          } >> "$GITHUB_OUTPUT"

      - name: Publish to npm (rc dist-tag)
        run: npm publish --provenance --access public --tag rc
@@ -0,0 +1,58 @@
+name: Scorecard
+
+# OpenSSF Scorecard supply-chain posture check. Runs weekly + on main push +
+# branch_protection_rule changes. SARIF uploads to the Security tab; the public
+# badge URL resolves once the first scheduled run lands (see README badge wiring).
+
+on:
+  branch_protection_rule:
+  schedule:
+    - cron: '0 7 * * 1'
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      # Needed to upload SARIF results to the Security tab.
+      security-events: write
+      # Needed for the publish_results badge flow (OIDC).
+      id-token: write
+      contents: read
+      actions: read
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run Scorecard
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # publish_results enables the public Scorecard badge.
+          publish_results: true
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      - name: Upload to Security tab
+        uses: github/codeql-action/upload-sarif@e46ed2cbd01164d986452f91f178727624ae40d7 # v4.35.3
+        with:
+          sarif_file: results.sarif
@@ -0,0 +1,82 @@
+name: Trivy Image Scan
+
+# Builds Dockerfile.cli and Dockerfile.web, then scans the resulting images
+# for OS-package and language-package CVEs at MEDIUM+ severity.
+# Findings upload to the Security tab; record-only (does not block merges).
+#
+# Trigger on Dockerfile changes in PRs so base-image/npm-layer remediation can
+# be verified before merge without running image scans on every PR.
+
+on:
+  pull_request:
+    paths:
+      - 'Dockerfile.cli'
+      - 'Dockerfile.web'
+      - 'gitnexus/Dockerfile.test'
+      - '.github/workflows/trivy.yml'
+  push:
+    branches: [main]
+  schedule:
+    - cron: '0 8 * * 1'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  scan:
+    name: Trivy (${{ matrix.image.name }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        image:
+          - { dockerfile: Dockerfile.cli, name: gitnexus-cli }
+          - { dockerfile: Dockerfile.web, name: gitnexus-web }
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Setup Buildx
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
+
+      - name: Build image (load locally for scan)
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
+        with:
+          context: .
+          file: ${{ matrix.image.dockerfile }}
+          load: true
+          push: false
+          tags: scan-target:${{ matrix.image.name }}
+
+      # aquasecurity/trivy-action versions < 0.35.0 are flagged by
+      # GHSA-69fq-xp46-6x23 (briefly compromised supply chain). Pinned to
+      # v0.36.0 (post-incident clean release) by commit SHA.
+      - name: Run Trivy
+        uses: aquasecurity/trivy-action@ed142fd0673e97e23eac54620cfb913e5ce36c25 # v0.36.0
+        with:
+          image-ref: scan-target:${{ matrix.image.name }}
+          format: sarif
+          output: trivy-${{ matrix.image.name }}.sarif
+          severity: MEDIUM,HIGH,CRITICAL
+          # Hides CVEs with no available fix in the base image.
+          ignore-unfixed: true
+          exit-code: '0'
+
+      - name: Upload to Security tab
+        uses: github/codeql-action/upload-sarif@e46ed2cbd01164d986452f91f178727624ae40d7 # v4.35.3
+        with:
+          sarif_file: trivy-${{ matrix.image.name }}.sarif
+          category: trivy-${{ matrix.image.name }}
@@ -0,0 +1,85 @@
+name: Workflow Lint
+
+# Lints .github/workflows/** for both:
+#   - actionlint: YAML syntax, expression typing, shellcheck inside `run:`
+#     blocks, unknown contexts, deprecated runner labels.
+#   - zizmor: security misconfigurations — unpinned actions, dangerous
+#     `${{ }}` interpolation, missing per-job permissions, etc.
+#
+# Scoped to PRs that touch .github/** only — keeps off the typical PR
+# critical path.
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/**'
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  actionlint:
+    name: actionlint
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      # Pinned to v2.1.2. Verify SHA via:
+      #   gh api repos/raven-actions/actionlint/git/refs/tags/v2.1.2
+      # The action wraps the upstream `rhysd/actionlint` binary and emits
+      # GitHub-annotation-formatted findings on PRs.
+      - name: Run actionlint
+        uses: raven-actions/actionlint@205b530c5d9fa8f44ae9ed59f341a0db994aa6f8 # v2.1.2
+        with:
+          fail-on-error: true
+
+  zizmor:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Setup Python
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.12'
+
+      - name: Install zizmor
+        # Pinned — resolves to whatever's latest on PyPI otherwise.
+        # Bump via Dependabot pip ecosystem (see .github/dependabot.yml).
+        run: pipx install zizmor==1.24.1
+
+      # Initial threshold: medium. High+ findings fail the job; medium findings
+      # appear in the Security tab without blocking. Tune after first run.
+      # Per-rule exemptions for pre-existing intentional patterns live in
+      # .github/zizmor.yml (each carries a documented mitigation).
+      - name: Run zizmor
+        run: zizmor --config .github/zizmor.yml --format sarif --min-severity medium . > zizmor.sarif
+        continue-on-error: true
+
+      - name: Upload SARIF
+        uses: github/codeql-action/upload-sarif@e46ed2cbd01164d986452f91f178727624ae40d7 # v4.35.3
+        with:
+          sarif_file: zizmor.sarif
+          category: zizmor
+
+      - name: Fail on high+ findings
+        run: zizmor --config .github/zizmor.yml --min-severity high .
@@ -0,0 +1,43 @@
+# zizmor config — pre-existing intentional patterns flagged on initial introduction.
+# Each ignore below has a documented mitigation. Re-evaluate when the source workflow changes.
+#
+# To run zizmor locally with this config:
+#   zizmor --config .github/zizmor.yml .
+
+rules:
+  dangerous-triggers:
+    ignore:
+      # workflow_run is REQUIRED to post sticky comments on fork PRs — the
+      # default-branch privileged token isn't accessible from `pull_request`
+      # on a fork. Mitigated by: read-only `actions:read` + `contents:read`
+      # for artifact download; `pull-requests:write` is the only write scope;
+      # no checkout of fork code occurs. Header comment in the file documents.
+      - ci-report.yml
+
+      # workflow_run is the trusted half of the autofix pipeline. The
+      # untrusted half (pr-autofix.yml) runs fork code with permissions:{}
+      # and produces only a diff artifact (data, not executable code). The
+      # publish job consumes the artifact, allowlist-validates every field
+      # of metadata.json before exporting to $GITHUB_OUTPUT, never checks
+      # out fork code, and never executes anything fork-controlled. Header
+      # comment in the file documents the split.
+      - pr-autofix-publish.yml
+
+      # pull_request_target needed by claude-code-action to access secrets
+      # and post review comments on fork PRs. Mitigated by: PR checkouts pin
+      # the fork's HEAD SHA (not the branch ref) to prevent TOCTOU races,
+      # and claude-code-action sandboxes execution. Header comment documents.
+      - claude.yml
+
+      # pull_request_target on the autolabel job needs `pull-requests:write`
+      # to apply labels. Mitigated by: release-drafter runs with `dry-run:
+      # true`, reads only `.github/release-drafter.yml` from the BASE ref,
+      # and the validate-title job (which runs untrusted `pull_request`
+      # context) holds no write permissions. Header comment documents.
+      - pr-labeler.yml
+
+  # Note: cache-poisoning is NOT exempted. The two prior findings in
+  # publish.yml and release-candidate.yml were fixed structurally by
+  # dropping `cache: npm` from those workflows (matches the pattern used
+  # by PyO3/maturin for the same audit). See the commit that added this
+  # file for the rationale.
@@ -107,3 +107,4 @@ local_docs/
 .tmp/
 .agents/
 .context/
+gitnexus/web/
@@ -2,6 +2,7 @@ dist/
 coverage/
 gitnexus/vendor/
 gitnexus/test/fixtures/
+gitnexus-web/test/fixtures/
 gitnexus-web/playwright-report/
 gitnexus-web/test-results/
 *.d.ts
@@ -1,7 +1,7 @@
-<!-- version: 1.6.0 -->
-<!-- Last updated: 2026-04-20 -->
+<!-- version: 1.7.0 -->
+<!-- Last updated: 2026-04-23 -->

-Last reviewed: 2026-04-20
+Last reviewed: 2026-04-23

 **Project:** GitNexus · **Environment:** dev · **Maintainer:** repository maintainers (see GitHub)

@@ -40,7 +40,7 @@ Commands and gotchas live under **Repo reference** below and in **[CONTRIBUTING.

 - **[ARCHITECTURE.md](ARCHITECTURE.md)**, **[CONTRIBUTING.md](CONTRIBUTING.md)**, **[GUARDRAILS.md](GUARDRAILS.md)**
 - **Call-resolution DAG (legacy path):** See ARCHITECTURE.md § Call-Resolution DAG. Typed 6-stage DAG inside the `parse` phase; language-specific behavior behind `inferImplicitReceiver` / `selectDispatch` hooks on `LanguageProvider`. Shared code in `gitnexus/src/core/ingestion/` must not name languages. Types: `gitnexus/src/core/ingestion/call-types.ts`.
- **Scope-resolution pipeline (RFC #909 Ring 3):** See ARCHITECTURE.md § Scope-Resolution Pipeline. Replaces the legacy DAG for languages in `MIGRATED_LANGUAGES` (currently Python). A language plugs in by implementing `ScopeResolver` (`scope-resolution/contract/scope-resolver.ts`) and registering it in `SCOPE_RESOLVERS`. CI parity gate runs BOTH paths per migrated language on every PR.
+- **Scope-resolution pipeline (RFC #909 Ring 3):** See ARCHITECTURE.md § Scope-Resolution Pipeline. Replaces the legacy DAG for languages in `MIGRATED_LANGUAGES` (see `registry-primary-flag.ts`). A language plugs in by implementing `ScopeResolver` (`scope-resolution/contract/scope-resolver.ts`) and registering it in `SCOPE_RESOLVERS`. CI parity gate runs BOTH paths per migrated language on every PR.
 - **Cursor:** `.cursor/index.mdc` (always-on); `.cursor/rules/*.mdc` (glob-scoped). Legacy `.cursorrules` deprecated.
 - **GitNexus:** skills in `.claude/skills/gitnexus/`; MCP rules in `gitnexus:start` block below.

@@ -48,6 +48,7 @@ Commands and gotchas live under **Repo reference** below and in **[CONTRIBUTING.

 | Date | Version | Change |
 |------|---------|--------|
+| 2026-04-23 | 1.7.0 | TypeScript added to `MIGRATED_LANGUAGES` (registry-primary call resolution by default). |
 | 2026-04-20 | 1.6.0 | Added scope-resolution pipeline pointer (RFC #909 Ring 3); Python migrated to registry-primary. |
 | 2026-04-19 | 1.5.0 | Cross-repo impact (#794): `impact`/`query`/`context` accept `repo: "@<group>"` + `service`. Removed `group_query`/`group_contracts`/`group_status` MCP tools; added `gitnexus://group/{name}/contracts` and `gitnexus://group/{name}/status` resources. |
 | 2026-04-16 | 1.4.0 | Fixed: web UI description, pre-commit behavior, MCP tools (7->16), added gitnexus-shared, removed stale vite-plugin-wasm gotcha. |
@@ -155,7 +156,7 @@ npx gitnexus analyze --drop-embeddings  # explicit opt-in to wipe existing embed

 Check `.gitnexus/meta.json` `stats.embeddings` (0 = none). A plain `analyze` no longer drops existing vectors — pass `--drop-embeddings` to wipe.

-> Claude Code: PostToolUse hook handles this after `git commit` and `git merge`.
+> Claude Code: PostToolUse hook detects a stale index after `git commit` and `git merge` and prompts the agent to run `analyze`. The hook does not invoke `analyze` itself.

 ## CLI Skills

@@ -340,6 +340,7 @@ CI auto-discovers the set via `tsx`. No workflow edit required.
 - **Cross-phase Tree cache**: parse phase writes Trees into `scopeTreeCache` (separate from the chunk-local `astCache`) ONLY for languages with `emitScopeCaptures`. Scope-resolution reads from it to skip the second parse. Cleared at end of the phase. Workers leave the cache empty — Trees can't cross MessageChannels; cache miss = fresh parse. `PROF_SCOPE_RESOLUTION=1` emits hit/miss counters and a worker-engaged warning.
 - **Typed relationship iteration**: heritage + MRO walk only the EXTENDS / IMPLEMENTS / HAS_METHOD edges via `iterRelationshipsByType`, not the full relationship map.
 - **Workspace-resolution-index**: O(1) `findOwnedMember` / `findExportedDef` / `classScopeByDefId` built once per run.
+- **SCC-ordered cross-file return-type propagation** (PR #1050): `propagateImportedReturnTypes` walks `indexes.sccs` in reverse-topological order (leaves first), so multi-hop alias chains like `models.User → service.user → app.user` collapse to the terminal class in a single linear pass. Within each importer, the source module's `typeBindings` is chain-followed BEFORE mirroring (so we mirror terminal types, not intermediate refs), and the importer's own `typeBindings` is chain-followed AFTER mirroring (so local `const x = importedFn()` resolves before downstream importers run). Cyclic SCCs reach a partial fixpoint within a single pass without iterating to convergence — see the `ts-circular` cross-file-binding fixture which only asserts pipeline-no-throw. PROF output (`PROF_SCOPE_RESOLUTION=1`) splits `finalize` from `propagate` so quadratic regressions in the chain-follow surface independently.

 ---

@@ -30,17 +30,17 @@ Format: `<type>[(scope)][!]: <subject>`

 Allowed types and the release-notes section each one lands in (defined in `.github/release.yml`):

-| Type | Label applied | Release-notes section |
-|------|---------------|-----------------------|
-| `feat` | `enhancement` | 🚀 Features |
-| `fix` | `bug` | 🐛 Bug Fixes |
-| `perf` | `performance` | 🏎️ Performance |
-| `refactor` | `refactor` | 🔄 Refactoring |
-| `test` | `test` | 🧪 Tests |
-| `ci` | `ci` | 👷 CI/CD |
-| `build` / `deps` | `dependencies` | 📦 Dependencies |
-| `docs` | `documentation` | (grouped under Other Changes unless a Docs section is added) |
-| `chore` / `revert` | `chore` | (excluded from release notes) |
+| Type               | Label applied   | Release-notes section                                        |
+| ------------------ | --------------- | ------------------------------------------------------------ |
+| `feat`             | `enhancement`   | 🚀 Features                                                  |
+| `fix`              | `bug`           | 🐛 Bug Fixes                                                 |
+| `perf`             | `performance`   | 🏎️ Performance                                               |
+| `refactor`         | `refactor`      | 🔄 Refactoring                                               |
+| `test`             | `test`          | 🧪 Tests                                                     |
+| `ci`               | `ci`            | 👷 CI/CD                                                     |
+| `build` / `deps`   | `dependencies`  | 📦 Dependencies                                              |
+| `docs`             | `documentation` | (grouped under Other Changes unless a Docs section is added) |
+| `chore` / `revert` | `chore`         | (excluded from release notes)                                |

 Append `!` to the type (e.g. `feat(api)!: drop /v1 endpoint`) or include `BREAKING CHANGE:` in the PR body to flag a breaking change — the labeler then adds the `breaking` label and the 💥 Breaking Changes section is rendered first.

@@ -81,17 +81,17 @@ Every workflow under `.github/workflows/` MUST declare a top-level `concurrency:
  - **Merge queue (`merge_group`)**: when this event is added, use `${{ github.workflow }}-${{ github.event.merge_group.head_ref }}` with `cancel-in-progress: false` (every queue entry is a distinct ref; never cancel).
 - **`cancel-in-progress` policy:**

-  | Event | `cancel-in-progress` | Why |
-  |-------|----------------------|-----|
-  | `pull_request` CI run | `true` | New push supersedes old run |
-  | `push` to `main` | `false` | Every main commit gets validated |
-  | Tag push (`v*` publish) | `false` | Never cancel mid-publish |
-  | `push` to `main` for release-candidate | `false` | Never cancel mid-RC publish |
-  | `workflow_dispatch` (release/publish) | `false` | Manual runs are intentional |
-  | `workflow_run` (sticky-comment reports) | `false` | Serialize, don't race |
-  | Per-PR bot workflows (`@claude`, review) | `false` | Serialize comments per PR |
-  | PR-meta re-checks (pr-description-check) | `true` | Cheap, latest wins |
-  | Single-slot utilities (triage sweep) | `true` | Latest dispatch supersedes |
+  | Event                                    | `cancel-in-progress` | Why                              |
+  | ---------------------------------------- | -------------------- | -------------------------------- |
+  | `pull_request` CI run                    | `true`               | New push supersedes old run      |
+  | `push` to `main`                         | `false`              | Every main commit gets validated |
+  | Tag push (`v*` publish)                  | `false`              | Never cancel mid-publish         |
+  | `push` to `main` for release-candidate   | `false`              | Never cancel mid-RC publish      |
+  | `workflow_dispatch` (release/publish)    | `false`              | Manual runs are intentional      |
+  | `workflow_run` (sticky-comment reports)  | `false`              | Serialize, don't race            |
+  | Per-PR bot workflows (`@claude`, review) | `false`              | Serialize comments per PR        |
+  | PR-meta re-checks (pr-description-check) | `true`               | Cheap, latest wins               |
+  | Single-slot utilities (triage sweep)     | `true`               | Latest dispatch supersedes       |

 - For workflows that serve multiple events at once (e.g. `ci.yml` handles `pull_request`, `push`, and `workflow_call`), make `cancel-in-progress` event-aware:

@@ -103,6 +103,41 @@ Every workflow under `.github/workflows/` MUST declare a top-level `concurrency:

 - When adding a new workflow, copy the concurrency block from an existing workflow of the same event shape.

+## CI automation contracts
+
+Two workflows produce machine-readable signals on every PR. Coding agents and humans alike can rely on the names and shapes below — change them with intent.
+
+### `gitnexus/autofix`
+
+`pr-autofix.yml` (untrusted) + `pr-autofix-publish.yml` (trusted) run `prettier --write` and `eslint --fix` against the PR head and surface a single ChatOps button on the PR. Three signals are emitted:
+
+| Surface           | Where                                                                                                                                                                                                                                                                                                   | Notes                                                                  |
+| ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
+| Sticky PR comment | Top-level comment with the HTML marker `<!-- gitnexus:pr-autofix-summary -->` and heading `## :sparkles: PR Autofix`. Only posted when there is something to fix; clean PRs stay silent.                                                                                                                | Edit-in-place via marker; one comment per PR.                          |
+| Fenced JSON block | Inside the sticky, fenced as `gitnexus-autofix`. Schema `gitnexus.pr-autofix/v2` with fields `state` (`fixes-available`), `pr_number`, `head_sha`, `changed_lines`, `run_id`, and `apply_command` (literal `/autofix`). | Parseable signal — preferred over regexing prose. v1 fields preserved as a superset. |
+| Check Run         | Stable name `gitnexus/autofix` on the PR head SHA. Conclusion: `success` (clean) or `neutral` (`fixes-available`). The neutral title is `Autofix available — comment /autofix to apply`.                                                                                                                | Surfaced under PR Checks; readable via `gh pr checks <pr>`.            |
+
+To detect outcome from an agent: `gh pr checks <pr> --json name,conclusion,output | jq '.[] | select(.name == "gitnexus/autofix")'`.
+
+Forks are supported. The untrusted half runs fork code with `permissions: {}` and ships the diff as an artifact; the trusted publish job consumes only the diff (data, not code) and posts the comment + check run.
+
+#### Applying autofix
+
+Comment `/autofix` on the PR (whole-line, no arguments). The `pr-autofix-apply.yml` workflow:
+
+1. Validates the comment body matches `^/autofix\s*$` exactly. Quoted or inline mentions are silently ignored.
+2. Validates the commenter has `admin`, `write`, or `maintain` permission on the repo, OR is the PR author. Other commenters get a 👎 reaction and a refusal reply.
+3. Locates the most recent successful `pr-autofix.yml` run for the PR's current head SHA, downloads its `autofix` artifact, applies the patch, and pushes a `chore(autofix): ...` commit back to the PR head branch.
+4. Reacts ✅ on success, 👎 on stale-patch / push-failure, and posts a short reply with the apply-run URL in either case.
+
+The apply workflow runs from the default branch's copy of the file regardless of where the comment originates — that's the trust anchor. There is no diff-size cap (the apply workflow uses `git apply` + push, not the GitHub review-comment API).
+
+For fork PRs, the push succeeds only when the contributor has **Allow edits by maintainers** enabled on the PR (the default). When they have disabled it, the workflow fails loud with a 👎 reaction and an explanation comment.
+
+Re-invoking `/autofix` after a successful apply is a safe no-op — the workflow detects the already-applied state via `git apply --check --reverse` and reacts ✅ without pushing.
+
+**Sensitive paths.** The apply workflow refuses any patch that touches `.github/` (workflow files, CODEOWNERS, dependabot config). A malicious PR could ship a custom prettier or ESLint config that reformats workflow YAML; if accepted, those edits would be pushed under `contents: write` without human review. Apply formatter changes to files under `.github/` manually in a normal commit so they get the same review every other workflow change gets.
+
 ## AI-assisted contributions

 If you use coding agents, follow project context files (e.g. `AGENTS.md`, `CLAUDE.md`) and avoid drive-by refactors unrelated to the issue. Prefer incremental, test-backed changes.
@@ -164,8 +199,7 @@ Two publish workflows ship `gitnexus` to npm:
    the Docker build.
  - Manually run `docker build` + `docker push` locally and sign with Cosign
    against the same digest.
-  - Delete `rc/<HEAD_SHA>` and `v<RC>` tags, then redispatch with `force:
-    true` to re-run the full RC pipeline (cuts a new RC number).
+  - Delete `rc/<HEAD_SHA>` and `v<RC>` tags, then redispatch with `force: true` to re-run the full RC pipeline (cuts a new RC number).

 The rc workflow never moves `latest`. To verify after a change, inspect dist-tags:

@@ -1,24 +1,32 @@
 ARG BUILDPLATFORM
 ARG TARGETPLATFORM
+# Pinned npm version used to replace the bundled npm in the upstream Node
+# image. Bumping requires a coordinated update in Dockerfile.web and
+# gitnexus/Dockerfile.test so all images bootstrap the same npm.
+ARG NPM_VERSION=11.14.1

-# ── Builder ────────────────────────────────────────────────────────────
+# -- Builder -----------------------------------------------------------
 # Native modules (tree-sitter-*, onnxruntime-node, node-gyp builds for
 # tree-sitter-proto / tree-sitter-swift) require python3 + a C/C++ toolchain.
-FROM node:22-trixie-slim AS builder
+# node:22-bookworm-slim
+FROM node:22-bookworm-slim@sha256:9f6d5975c7dca860947d3915877f85607946403fc55349f39b4bc3688448bb6e AS builder
+ARG NPM_VERSION

 WORKDIR /app

+RUN npx --yes npm@${NPM_VERSION} install -g npm@${NPM_VERSION}
+
 # Toolchain for node-gyp / native builds.
 RUN apt-get update && apt-get install -y --no-install-recommends python3 make g++ git && rm -rf /var/lib/apt/lists/*

-# Build gitnexus-shared first — gitnexus depends on it as a workspace.
+# Build gitnexus-shared first - gitnexus depends on it as a workspace.
 COPY gitnexus-shared/package.json gitnexus-shared/package-lock.json ./gitnexus-shared/
 RUN npm ci --prefix gitnexus-shared
 COPY gitnexus-shared ./gitnexus-shared
 RUN rm -f gitnexus-shared/tsconfig.tsbuildinfo
 RUN npm run build --prefix gitnexus-shared

-# Copy the full gitnexus package before installing — `npm ci` triggers
+# Copy the full gitnexus package before installing - `npm ci` triggers
 # `postinstall` (patches tree-sitter-swift, builds the vendored
 # tree-sitter-proto) and `prepare` (compiles TypeScript via scripts/build.js),
 # both of which need the source tree.
@@ -28,11 +36,15 @@ RUN npm ci --prefix gitnexus
 # Drop dev dependencies for a smaller runtime layer.
 RUN npm prune --omit=dev --prefix gitnexus

-# ── Runtime ────────────────────────────────────────────────────────────
-FROM node:22-trixie-slim AS runtime
+# -- Runtime -----------------------------------------------------------
+# node:22-bookworm-slim
+FROM node:22-bookworm-slim@sha256:9f6d5975c7dca860947d3915877f85607946403fc55349f39b4bc3688448bb6e AS runtime

 # curl for the healthcheck; git so `gitnexus` can clone repos at runtime.
-RUN apt-get update && apt-get install -y --no-install-recommends curl git && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y --no-install-recommends curl git && rm -rf /var/lib/apt/lists/* \
+    && rm -rf /usr/local/lib/node_modules/npm \
+    && rm -rf /usr/local/lib/node_modules/corepack \
+    && rm -f /usr/local/bin/npm /usr/local/bin/npx /usr/local/bin/corepack

 WORKDIR /app

@@ -47,7 +59,7 @@ COPY --from=builder --chown=node:node /app/gitnexus/vendor ./gitnexus/vendor

 USER node

-# The web UI defaults to http://localhost:4747 — keep that contract.
+# The web UI defaults to http://localhost:4747 - keep that contract.
 ENV GITNEXUS_HOME=/data/gitnexus \
    NODE_ENV=production \
    PORT=4747
@@ -1,10 +1,17 @@
 ARG BUILDPLATFORM
 ARG TARGETPLATFORM
+# Pinned npm version — keep in sync with Dockerfile.cli and
+# gitnexus/Dockerfile.test.
+ARG NPM_VERSION=11.14.1

-FROM --platform=$BUILDPLATFORM node:22-alpine AS builder
+# node:22-bookworm-slim
+FROM --platform=$BUILDPLATFORM node:22-bookworm-slim@sha256:9f6d5975c7dca860947d3915877f85607946403fc55349f39b4bc3688448bb6e AS builder
+ARG NPM_VERSION

 WORKDIR /app

+RUN npx --yes npm@${NPM_VERSION} install -g npm@${NPM_VERSION}
+
 COPY gitnexus-shared/package.json gitnexus-shared/package-lock.json ./gitnexus-shared/
 RUN npm ci --prefix gitnexus-shared

@@ -19,9 +26,13 @@ RUN npm ci --prefix gitnexus-web
 COPY gitnexus-web ./gitnexus-web
 RUN npm run build --prefix gitnexus-web

-FROM node:22-alpine AS runtime
+# node:22-bookworm-slim
+FROM node:22-bookworm-slim@sha256:9f6d5975c7dca860947d3915877f85607946403fc55349f39b4bc3688448bb6e AS runtime

-RUN apk add --no-cache curl
+RUN apt-get update && apt-get install -y --no-install-recommends curl && rm -rf /var/lib/apt/lists/* \
+    && rm -rf /usr/local/lib/node_modules/npm \
+    && rm -rf /usr/local/lib/node_modules/corepack \
+    && rm -f /usr/local/bin/npm /usr/local/bin/npx /usr/local/bin/corepack

 WORKDIR /app

@@ -1,5 +1,5 @@
 # GitNexus
-⚠️ Important Notice:** GitNexus has NO official cryptocurrency, token, or coin. Any token/coin using the GitNexus name on Pump.fun or any other platform is **not affiliated with, endorsed by, or created by** this project or its maintainers. Do not purchase any cryptocurrency claiming association with GitNexus.
+**⚠️ Important Notice:** GitNexus has NO official cryptocurrency, token, or coin. Any token/coin using the GitNexus name on Pump.fun or any other platform is **not affiliated with, endorsed by, or created by** this project or its maintainers. Do not purchase any cryptocurrency claiming association with GitNexus.

 <div align="center">

@@ -18,6 +18,9 @@
  <a href="https://polyformproject.org/licenses/noncommercial/1.0.0/">
    <img src="https://img.shields.io/badge/License-PolyForm%20Noncommercial-blue.svg" alt="License: PolyForm Noncommercial"/>
  </a>
+  <a href="https://securityscorecards.dev/viewer/?uri=github.com/abhigyanpatwari/GitNexus">
+    <img src="https://api.securityscorecards.dev/projects/github.com/abhigyanpatwari/GitNexus/badge" alt="OpenSSF Scorecard"/>
+  </a>

  <p><strong>Enterprise (SaaS & Self-hosted)</strong> - <a href="https://akonlabs.com">akonlabs.com</a></p>

@@ -36,7 +39,7 @@ https://github.com/user-attachments/assets/172685ba-8e54-4ea7-9ad1-e31a3398da72

 > *Like DeepWiki, but deeper.* DeepWiki helps you *understand* code. GitNexus lets you *analyze* it — because a knowledge graph tracks every relationship, not just descriptions.

-**TL;DR:** The **Web UI** is a quick way to chat with any repo. The **CLI + MCP** is how you make your AI agent actually reliable — it gives Cursor, Claude Code, Codex, and friends a deep architectural view of your codebase so they stop missing dependencies, breaking call chains, and shipping blind edits. Even smaller models get full architectural clarity, making it compete with goliath models.
+**TL;DR:** The **Web UI** is a quick way to chat with any repo. The **CLI + MCP** is how you make your AI agent actually reliable — it gives Cursor, Claude Code, Codex, and friends a deep architectural view of your codebase so they stop missing dependencies, breaking call chains, and shipping blind edits. Even smaller models get full architectural clarity, making it compete with Goliath models.

 ---

@@ -106,6 +109,8 @@ That's it. This indexes the codebase, installs agent skills, registers Claude Co

 To configure MCP for your editor, run `npx gitnexus setup` once — or set it up manually below.

+> **Faster install (no C++ toolchain needed):** set `GITNEXUS_SKIP_OPTIONAL_GRAMMARS=1` before `npm install -g gitnexus` to skip the native `tree-sitter-dart` and `tree-sitter-proto` builds. Dart/Proto files won't be parsed, but install completes in seconds without `python3`/`make`/`g++`. Strict `=1` only — any other value falls through to the rebuild.
+
 ### MCP Setup

 `gitnexus setup` auto-detects your editors and writes the correct global MCP config. You only need to run it once.
@@ -120,7 +125,7 @@ To configure MCP for your editor, run `npx gitnexus setup` once — or set it up
 | **Windsurf**    | Yes | —     | —                   | MCP            |
 | **OpenCode**    | Yes | Yes    | —                   | MCP + Skills   |

-> **Claude Code** gets the deepest integration: MCP tools + agent skills + PreToolUse hooks that enrich searches with graph context + PostToolUse hooks that auto-reindex after commits.
+> **Claude Code** gets the deepest integration: MCP tools + agent skills + PreToolUse hooks that enrich searches with graph context + PostToolUse hooks that detect a stale index after commits and prompt the agent to reindex.

 ## Community Integrations

@@ -135,6 +140,8 @@ Built by the community — not officially maintained, but worth checking out.

 If you prefer manual configuration:

+> **Recommended for fastest startup:** install gitnexus globally (`npm i -g gitnexus`) and run `gitnexus setup` — this writes an absolute-path MCP config that bypasses `npx` entirely. The pinned-`npx` snippets below are a quickstart fallback; on a cold cache the `npx` install can exceed Claude Code's `MCP_TIMEOUT` default (~30s).
+
 **Claude Code** (full support — MCP + skills + hooks):

 ```bash
@@ -197,6 +204,7 @@ gitnexus analyze --skip-agents-md  # Preserve custom AGENTS.md/CLAUDE.md gitnexu
 gitnexus analyze --skip-git        # Index folders that are not Git repositories
 gitnexus analyze --embeddings    # Enable embedding generation (slower, better search)
 gitnexus analyze --verbose       # Log skipped files when parsers are unavailable
+gitnexus analyze --worker-timeout 60  # Increase worker idle timeout for slow parses
 gitnexus mcp                     # Start MCP server (stdio) — serves all indexed repos
 gitnexus serve                   # Start local HTTP server (multi-repo) for web UI connection
 gitnexus list                    # List all indexed repositories
@@ -206,6 +214,7 @@ gitnexus clean --all --force     # Delete all indexes
 gitnexus wiki [path]             # Generate repository wiki from knowledge graph
 gitnexus wiki --model <model>    # Wiki with custom LLM model (default: gpt-4o-mini)
 gitnexus wiki --base-url <url>   # Wiki with custom LLM API base URL
+gitnexus publish                 # Notify the understand-quickly registry (opt-in, see below)

 # Repository groups (multi-repo / monorepo service tracking)
 gitnexus group create <name>                                   # Create a repository group
@@ -218,6 +227,14 @@ gitnexus group query <name> <q>  # Search execution flows across all repos in a
 gitnexus group status <name>     # Check staleness of repos in a group
 ```

+If `analyze` reports a worker parse timeout on a large or unusual repository, it keeps running and falls back safely. To give slow worker jobs more time, use `gitnexus analyze --worker-timeout 60` or set `GITNEXUS_WORKER_SUB_BATCH_TIMEOUT_MS=60000`. For very large files, `GITNEXUS_WORKER_SUB_BATCH_MAX_BYTES` controls the worker job byte budget.
+
+#### Publishing to understand-quickly (opt-in)
+
+[`looptech-ai/understand-quickly`](https://github.com/looptech-ai/understand-quickly) is a public registry of code-knowledge graphs that lists `gitnexus@1` as a first-class format. After registering your repo once (`npx @understand-quickly/cli add` or the [wizard](https://looptech-ai.github.io/understand-quickly/add.html)), `gitnexus publish` fires a single `repository_dispatch` event so the registry resyncs your entry on demand instead of waiting for the nightly job.
+
+It is opt-in and a no-op without `UNDERSTAND_QUICKLY_TOKEN` — a fine-grained GitHub PAT with `Repository dispatches: write` on the registry repo. Nothing else happens; no graph file is uploaded. See the [protocol spec](https://github.com/looptech-ai/understand-quickly/blob/main/docs/integrations/protocol.md) for the full contract.
+
 ### What Your AI Agent Gets

 **16 tools** exposed via MCP (11 per-repo + 5 group):
@@ -321,19 +338,21 @@ flowchart TD

 ## Web UI (browser-based)

-A fully client-side graph explorer and AI chat. No server, no install — your code never leaves the browser.
+A client-side graph explorer and AI chat — your code never leaves your machine.

-**Try it now:** [gitnexus.vercel.app](https://gitnexus.vercel.app) — drag & drop a ZIP and start exploring.
+**Try it now:** [gitnexus.vercel.app](https://gitnexus.vercel.app) — run `npx gitnexus@latest serve` locally and the page auto-connects to your local backend.

 <img width="2550" height="1343" alt="gitnexus_img" src="https://github.com/user-attachments/assets/cc5d637d-e0e5-48e6-93ff-5bcfdb929285" />

-Or run locally:
+Or run the frontend locally:

 ```bash
 git clone https://github.com/abhigyanpatwari/gitnexus.git
 cd gitnexus/gitnexus-shared && npm install && npm run build
 cd ../gitnexus-web && npm install
 npm run dev
+# Then in another terminal, start the backend the frontend connects to:
+npx gitnexus@latest serve
 ```

 ## Docker
@@ -0,0 +1,67 @@
+# Security Policy
+
+## Supported Versions
+
+GitNexus is developed on `main`. Security fixes are applied to the latest released minor on npm (`gitnexus`) and to the published Docker images (`Dockerfile.cli`, `Dockerfile.web`). Older minors are not back-patched.
+
+## Reporting a Vulnerability
+
+**Please do not open a public GitHub issue for security reports.**
+
+Use **GitHub Private Vulnerability Reporting** for this repository:
+
+→ https://github.com/abhigyanpatwari/GitNexus/security/advisories/new
+
+Please include:
+
+- A description of the issue and its potential impact
+- Steps to reproduce (a minimal repro repo or commit hash if possible)
+- The affected version(s) — `npm view gitnexus version`, image digest, or commit SHA
+- Any suggested mitigation
+
+### What to expect
+
+- **Acknowledgement:** best-effort within 5 business days, subject to maintainer capacity.
+- **Triage:** we will confirm whether the report is in scope, request clarifications if needed, and propose a fix timeline.
+- **Disclosure:** coordinated. We will agree on a disclosure date with you before publishing an advisory.
+
+### Scope
+
+In scope:
+
+- The `gitnexus` CLI and MCP server (`gitnexus/`)
+- The `gitnexus-web` thin client (`gitnexus-web/`)
+- The `gitnexus-shared` types package (`gitnexus-shared/`)
+- The published Docker images (`Dockerfile.cli`, `Dockerfile.web`)
+- GitHub Actions workflows in `.github/workflows/`
+
+Out of scope:
+
+- Vulnerabilities in third-party dependencies that we have no influence over (please report upstream; if a viable mitigation exists at the GitNexus layer, that's in scope).
+- Issues requiring physical access to a developer machine or a compromised local environment.
+- Theoretical attacks without a practical exploit against a default GitNexus deployment.
+
+## Recommended Hardening for Forks and Self-Hosted Deployments
+
+If you fork GitNexus or self-host it, we recommend enabling the following in your repository's **Settings → Code security and analysis**:
+
+- **Private vulnerability reporting** — the channel described above.
+- **Dependabot alerts** — alerts on advisories affecting your dependencies.
+- **Dependabot security updates** — automated PRs for security patches (this repo's `.github/dependabot.yml` already covers version updates).
+- **Secret scanning** and **Push protection** — blocks pushes that introduce known secret patterns. Defense-in-depth on top of the in-CI Gitleaks scan documented below.
+- **Code scanning** — surfaces SARIF results from CodeQL, Trivy, Scorecard, and zizmor in one place.
+
+## Automated Scans Running in CI
+
+This repository runs the following scans automatically. Findings appear under the repository's **Security → Code scanning** tab.
+
+| Scan | Tool | Trigger | Action on finding |
+|------|------|---------|-------------------|
+| Static analysis (JS/TS, Python) | [CodeQL](https://github.com/github/codeql-action) | PR, `main` push, weekly | Advisory (Security tab) |
+| Dependency vulnerabilities (PR diff) | [`dependency-review-action`](https://github.com/actions/dependency-review-action) | PR | **Blocks PR** at `high+` severity |
+| Secret scanning | [Gitleaks](https://github.com/gitleaks/gitleaks-action) | PR, `main` push | **Blocks PR** on default rules |
+| Supply-chain posture | [OpenSSF Scorecard](https://github.com/ossf/scorecard-action) | Weekly, `main` push | Advisory (Security tab + public badge) |
+| Workflow lint | [zizmor](https://github.com/woodruffw/zizmor) | PR (touching `.github/**`) | **Blocks PR** at `high+` severity |
+| Container image scan | [Trivy](https://github.com/aquasecurity/trivy-action) | Weekly, `main` push | Advisory (Security tab) |
+
+Dependency version updates are managed separately by Dependabot — see `.github/dependabot.yml`.
@@ -19,7 +19,7 @@ services:
      - ${WORKSPACE_DIR:-./workspace}:/workspace:ro
    restart: unless-stopped
    healthcheck:
-      test: ['CMD', 'curl', '-fsS', 'http://localhost:4747/api/heartbeat']
+      test: ['CMD', 'curl', '-f', 'http://localhost:4747/api/health']
      interval: 30s
      timeout: 5s
      retries: 3
@@ -1,11 +1,11 @@
 import { createReadStream } from 'node:fs';
 import { stat } from 'node:fs/promises';
 import { createServer } from 'node:http';
-import { extname, join, normalize, sep } from 'node:path';
+import { extname, isAbsolute, normalize, relative, resolve } from 'node:path';

 const host = '0.0.0.0';
 const port = Number(process.env.PORT || '4173');
-const root = join(process.cwd(), 'dist');
+const root = resolve(process.cwd(), 'dist');

 const contentTypes = {
  '.css': 'text/css; charset=utf-8',
@@ -20,39 +20,78 @@ const contentTypes = {
  '.woff2': 'font/woff2',
 };

-function resolvePath(urlPath) {
+// Static asset server for the gitnexus-web Docker image.
+//
+// Path-injection containment: the request handler is intentionally a single
+// inline pipeline with no helper functions on the path-data flow. Each
+// filesystem sink (stat, createReadStream) is immediately preceded by the
+// canonical `path.relative` containment check that CodeQL's
+// `js/path-injection` query recognizes as a sanitizer barrier:
+//
+//     const rel = relative(root, candidate);
+//     if (rel.startsWith('..') || isAbsolute(rel)) reject;
+//     // candidate is now proven inside `root`
+//
+// Earlier iterations of this file used a helper (`resolveWithinRoot`) and a
+// `startsWith(root + sep)` check. Both were semantically correct but neither
+// was recognized by CodeQL: `startsWith(root + sep)` is not in the analyzer's
+// barrier-pattern set, and helper-based sanitization is not followed across
+// the request handler's reassignment paths in vanilla JS. The inline-at-sink
+// shape below is the documented analyzer-friendly idiom.
+const server = createServer(async (req, res) => {
+  const urlPath = req.url?.split('?')[0] || '/';
+
  let decoded;
  try {
    decoded = decodeURIComponent(urlPath);
  } catch {
-    return null;
+    res.writeHead(400);
+    res.end('Bad request');
+    return;
  }
-  if (decoded.includes('\0')) return null;
+  if (decoded.includes('\0')) {
+    res.writeHead(400);
+    res.end('Bad request');
+    return;
+  }
+
  const cleanPath = normalize(decoded.replace(/^\/+/, ''));
-  const candidate = join(root, cleanPath);
-  if (candidate !== root && !candidate.startsWith(root + sep)) return null;
-  return candidate;
-}
+  const initialPath = resolve(root, cleanPath);

-const server = createServer(async (req, res) => {
-  const requestPath = req.url?.split('?')[0] || '/';
-  let filePath = resolvePath(requestPath);
-
-  if (!filePath) {
+  // Sanitizer barrier #1 — guards the first stat() sink.
+  const initialRel = relative(root, initialPath);
+  if (initialRel.startsWith('..') || isAbsolute(initialRel)) {
    res.writeHead(400);
    res.end('Bad request');
    return;
  }

  try {
-    const fileStat = await stat(filePath).catch(() => null);
-    if (fileStat?.isDirectory()) {
-      filePath = join(filePath, 'index.html');
-    } else if (!fileStat?.isFile()) {
-      filePath = join(root, 'index.html');
+    const initialStat = await stat(initialPath).catch(() => null);
+
+    // Pick the path we actually serve. Note: any branch reassigns to a
+    // freshly-resolved path; the next sanitizer barrier re-validates.
+    let finalPath;
+    if (initialStat?.isDirectory()) {
+      finalPath = resolve(initialPath, 'index.html');
+    } else if (!initialStat?.isFile()) {
+      finalPath = resolve(root, 'index.html');
+    } else {
+      finalPath = initialPath;
    }

-    const finalStat = await stat(filePath).catch(() => null);
+    // Sanitizer barrier #2 — guards both the second stat() and the
+    // createReadStream() sinks. No reassignment of finalPath happens
+    // between this guard and either sink, so the analyzer can prove
+    // containment for both.
+    const finalRel = relative(root, finalPath);
+    if (finalRel.startsWith('..') || isAbsolute(finalRel)) {
+      res.writeHead(400);
+      res.end('Bad request');
+      return;
+    }
+
+    const finalStat = await stat(finalPath).catch(() => null);
    if (!finalStat?.isFile()) {
      res.writeHead(404);
      res.end('Not found');
@@ -60,14 +99,14 @@ const server = createServer(async (req, res) => {
    }

    res.writeHead(200, {
-      'Cache-Control': filePath.includes('/assets/')
+      'Cache-Control': finalPath.includes('/assets/')
        ? 'public, max-age=31536000, immutable'
        : 'no-cache',
-      'Content-Type': contentTypes[extname(filePath)] || 'application/octet-stream',
+      'Content-Type': contentTypes[extname(finalPath)] || 'application/octet-stream',
      'Cross-Origin-Opener-Policy': 'same-origin',
      'Cross-Origin-Embedder-Policy': 'require-corp',
    });
-    const stream = createReadStream(filePath);
+    const stream = createReadStream(finalPath);
    stream.on('error', () => res.destroy());
    stream.pipe(res);
  } catch (error) {
@@ -100,6 +100,23 @@ it('rejects percent-encoded null bytes with 400', async () => {
  assert.equal(res.status, 400);
 });

+it('rejects percent-encoded path traversal with 400', async () => {
+  // %2e%2e%2f decodes to '../'. Without the path.relative inline barrier,
+  // a naive string check on the raw URL would let this through and only
+  // the lexical-decoded path.resolve would catch it. Confirm the barrier
+  // does its job after decodeURIComponent.
+  const res = await rawGet(serverPort, '/%2e%2e%2f%2e%2e%2fetc%2fpasswd');
+  assert.equal(res.status, 400);
+});
+
+it('rejects malformed percent-encoding with 400', async () => {
+  // %GG is not a valid percent-encoded sequence — decodeURIComponent throws.
+  // The handler's try/catch around decode must convert this to a 400 rather
+  // than an unhandled rejection.
+  const res = await rawGet(serverPort, '/foo%GGbar');
+  assert.equal(res.status, 400);
+});
+
 it('returns 404 when dist/index.html is missing', async () => {
  await unlink(join(tmpDir, 'dist', 'index.html'));
  const res = await rawGet(serverPort, '/nonexistent-page');
@@ -82,6 +82,9 @@ matching:
  bm25_threshold: 0.7
  embedding_threshold: 0.65
  max_candidates_per_step: 3
+  # Exclude noisy paths from cross-link matching (contracts are still extracted)
+  exclude_links_paths: [/ping, /health, /healthcheck]
+  exclude_links_param_only_paths: true
 ```

 Field notes (schema in [`types.ts`](../../gitnexus/src/core/group/types.ts)):
@@ -91,7 +94,9 @@ Field notes (schema in [`types.ts`](../../gitnexus/src/core/group/types.ts)):
 - `repos` — a mapping from **group path** (a logical name you choose; can be a hierarchy like `backend/orders`) to **registry name** (the name shown by `npx gitnexus list`). Both sides appear throughout the tooling: contract rows use the group path; `@<group>/<groupPath>` routes tools to a single member.
 - `links` — optional manifest escape hatch, one entry per explicit cross-repo contract. Validated by the parser: `from` and `to` must be known repo paths, `type` must be one of `http | grpc | topic | lib | custom`, and `role` must be `provider | consumer`.
 - `detect` — toggles per extractor family. Defaults (set in `config-parser.ts`) turn `http`, `grpc`, `topics`, and `shared_libs` on; disable the ones you don't use to speed up sync.
- `matching` — thresholds for the matching cascade. The exact match is always run; other strategies depend on indexer state.
+- `matching` — thresholds for the matching cascade. The exact match is always run; other strategies depend on indexer state. Two optional fields reduce false-positive cross-links in large groups:
+  - `exclude_links_paths` — list of HTTP paths to exclude from cross-link matching (default `[]`). Contracts at these paths are still extracted and visible in the registry, but they don't produce cross-repo links. Useful for health-check endpoints (`/ping`, `/health`) that every service exposes. Trailing slashes are normalized.
+  - `exclude_links_param_only_paths` — when `true`, exclude routes where every segment is `{param}` (e.g. `/{param}`, `/{param}/{param}`) from cross-link matching (default `false`). Mixed routes like `/users/{param}` are not affected.

 ### 3. Sync the group

@@ -0,0 +1,185 @@
+# Using GitNexus across Apache Thrift microservices
+
+## When to use this guide
+
+Use this guide when several repositories communicate through Apache Thrift and you want GitNexus to trace impact across provider and consumer boundaries. The walkthrough assumes each service is indexed on its own, then joined through a GitNexus group.
+
+This is not a framework integration guide. GitNexus reads portable Thrift IDL and common Java generated-code shapes. Framework-specific wiring, service discovery, deployment metadata, and private annotations belong outside the open-source core.
+
+## Mental model
+
+- `.thrift` files define the canonical service contract. A method in an IDL service becomes a stable contract id in the form `thrift::<namespace>.<Service>/<Method>`.
+- Service wildcard ids in the form `thrift::<namespace>.<Service>/*` are supported as manifest and matching fallback forms when a service-level link is needed.
+- Java generated-code usage points GitNexus toward implementation and call sites. Providers commonly implement generated `Service.Iface`; consumers commonly hold or construct generated service interfaces or clients.
+- Group sync matches provider and consumer contracts with the same id, then cross-repo impact can hop through those links.
+- Framework-specific wiring should be modeled by extractor plugins, manifest links, or downstream integrations rather than hard-coded into core Thrift support.
+
+## Fictional IDL
+
+```thrift
+namespace java billing.v1
+
+struct PlaceOrderRequest {
+  1: string orderId
+  2: double amount
+}
+
+struct PlaceOrderResponse {
+  1: bool accepted
+}
+
+struct GetOrderRequest {
+  1: string orderId
+}
+
+struct GetOrderResponse {
+  1: string orderId
+  2: string status
+}
+
+service OrderService {
+  PlaceOrderResponse PlaceOrder(1: PlaceOrderRequest request)
+  GetOrderResponse GetOrder(1: GetOrderRequest request)
+}
+```
+
+The service methods above produce canonical ids:
+
+- `thrift::billing.v1.OrderService/PlaceOrder`
+- `thrift::billing.v1.OrderService/GetOrder`
+- `thrift::billing.v1.OrderService/*` as a service-level manifest or matching fallback form
+
+## Java provider example
+
+Generated Java code usually exposes an `Iface` interface for the service. A provider implementation can be detected when it implements that generated interface.
+
+```java
+package example.billing;
+
+import billing.v1.GetOrderRequest;
+import billing.v1.GetOrderResponse;
+import billing.v1.OrderService;
+import billing.v1.PlaceOrderRequest;
+import billing.v1.PlaceOrderResponse;
+
+public final class OrderServiceHandler implements OrderService.Iface {
+  @Override
+  public PlaceOrderResponse PlaceOrder(PlaceOrderRequest request) {
+    return new PlaceOrderResponse(true);
+  }
+
+  @Override
+  public GetOrderResponse GetOrder(GetOrderRequest request) {
+    return new GetOrderResponse(request.getOrderId(), "CREATED");
+  }
+}
+```
+
+With the IDL available, GitNexus can connect the implementation to `thrift::billing.v1.OrderService/PlaceOrder` and `thrift::billing.v1.OrderService/GetOrder`.
+
+## Java consumer examples
+
+Consumers are strongest when Java usage can be tied back to the IDL namespace and service.
+
+```java
+package example.checkout;
+
+import billing.v1.OrderService;
+import billing.v1.PlaceOrderRequest;
+
+public final class CheckoutWorkflow {
+  private final OrderService.Iface orders;
+
+  public CheckoutWorkflow(OrderService.Iface orders) {
+    this.orders = orders;
+  }
+
+  public void submit(String orderId) throws Exception {
+    orders.PlaceOrder(new PlaceOrderRequest(orderId, 42.0));
+  }
+}
+```
+
+Some generated-code styles use the generated service type directly while keeping enough IDL context through imports and method calls.
+
+```java
+package example.reporting;
+
+import billing.v1.GetOrderRequest;
+import billing.v1.OrderService;
+
+public final class OrderLookup {
+  private final OrderService.Client client;
+
+  public OrderLookup(OrderService.Client client) {
+    this.client = client;
+  }
+
+  public String status(String orderId) throws Exception {
+    return client.GetOrder(new GetOrderRequest(orderId)).getStatus();
+  }
+}
+```
+
+When IDL context is missing, GitNexus may still emit a weaker consumer signal for generated `Iface` or `Client` shapes, but confidence is lower.
+
+## Group configuration
+
+New group configs enable Thrift contract detection by default. Keep `detect.thrift: true`
+when a group should scan for Thrift contracts, or set it to `false` to skip Thrift
+extraction for that group.
+
+```yaml
+version: 1
+name: billing-platform
+description: Fictional services connected by Apache Thrift
+
+repos:
+  checkout: checkout-service
+  billing: billing-service
+
+links: []
+
+detect:
+  http: true
+  grpc: false
+  thrift: true
+  topics: false
+  shared_libs: true
+```
+
+To disable Thrift extraction explicitly:
+
+```yaml
+detect:
+  thrift: false
+```
+
+After indexing each member repository, run group sync to extract contracts and write cross-repo links:
+
+```bash
+npx gitnexus group sync billing-platform
+```
+
+## Manifest escape hatch
+
+Use manifest links when automatic extraction cannot see a provider or consumer, or when generated code is wrapped behind an abstraction. Write the contract without the `thrift::` prefix; GitNexus canonicalizes it to the full Thrift contract id.
+
+```yaml
+links:
+  - from: checkout
+    to: billing
+    type: thrift
+    contract: billing.v1.OrderService/PlaceOrder
+    role: consumer
+```
+
+GitNexus canonicalizes that manifest entry to `thrift::billing.v1.OrderService/PlaceOrder` and uses it to connect the two repositories.
+
+## Known limitations
+
+- Java detection currently targets v1 generated-code patterns.
+- Maven and POM dependency coordinates are not used for inference.
+- Framework-specific annotations and service discovery metadata are ignored by open-source Thrift extraction.
+- Ambiguous same-name services are skipped instead of guessed.
+- Java consumers without IDL context are lower confidence and limited to generated `Iface` and `Client` shapes.
@@ -4,6 +4,38 @@ import unusedImports from 'eslint-plugin-unused-imports';
 import reactHooks from 'eslint-plugin-react-hooks';
 import prettierConfig from 'eslint-config-prettier';

+// Selectors that protect MCP-reachable code from corrupting the JSON-RPC
+// stdio frame stream. The MCP-reachable block below uses these directly;
+// the lbug-adapter file-specific block must spread them in too because
+// ESLint flat config REPLACES (not merges) `no-restricted-syntax` when
+// multiple matching configs target the same file. Extracting to a const
+// makes the dependency mechanical instead of documentation-enforced.
+const mcpStdoutWriteSelectors = [
+  {
+    selector:
+      "MemberExpression[object.type='MemberExpression'][object.object.name='process'][object.property.name='stdout'][property.name='write']",
+    message:
+      'Direct process.stdout.write is forbidden in MCP-reachable code. Route diagnostics through console.error or process.stderr.write — the MCP stdio transport owns stdout for JSON-RPC frames.',
+  },
+  {
+    selector:
+      "CallExpression[callee.type='MemberExpression'][callee.object.type='MemberExpression'][callee.object.object.name='process'][callee.object.property.name='stdout'][callee.property.name='write']",
+    message:
+      'Direct process.stdout.write is forbidden in MCP-reachable code. Route diagnostics through console.error or process.stderr.write — the MCP stdio transport owns stdout for JSON-RPC frames.',
+  },
+  {
+    // Catches the canonical destructuring shape:
+    //   const { write } = process.stdout;
+    // (and any other ObjectPattern destructure rooted at process.stdout)
+    // which would otherwise capture a reference to the original write
+    // and bypass the sentinel.
+    selector:
+      "VariableDeclarator[init.type='MemberExpression'][init.object.name='process'][init.property.name='stdout'] > ObjectPattern",
+    message:
+      'Destructuring process.stdout is forbidden in MCP-reachable code — bypasses the sentinel. Use process.stderr.write for diagnostics.',
+  },
+];
+
 export default [
  // Global ignores
  {
@@ -14,6 +46,7 @@ export default [
      'gitnexus/vendor/**',
      'gitnexus-web/src/vendor/**',
      'gitnexus/test/fixtures/**',
+      'gitnexus-web/test/fixtures/**',
      'gitnexus-web/playwright-report/**',
      'gitnexus-web/test-results/**',
      '**/*.d.ts',
@@ -58,11 +91,47 @@ export default [
    },
  },

-  // CLI package — allow console.log (it's a CLI tool)
+  // CLI/server packages — `console.log` IS the contract (CLI tool data output
+  // on stdout, e.g. `gitnexus query | jq`; server pretty-printed banners).
+  // Diagnostic logging (`warn`/`error`/`debug`/`info`) goes through pino like
+  // the rest of the codebase.
  {
    files: ['gitnexus/src/cli/**/*.ts', 'gitnexus/src/server/**/*.ts'],
    rules: {
-      'no-console': 'off',
+      'no-console': ['error', { allow: ['log'] }],
+    },
+  },
+
+  // Forcing function for the pino migration. Severity is `error` — the
+  // codebase-wide migration is complete; new `console.*` in core source
+  // must fail lint. CLI/server are exempt above (legitimate stdout output).
+  // Tests, bin scripts, and the logger module itself remain exempt.
+  {
+    files: ['gitnexus/src/**/*.ts'],
+    ignores: ['gitnexus/src/cli/**', 'gitnexus/src/server/**', 'gitnexus/src/core/logger.ts'],
+    rules: {
+      'no-console': 'error',
+    },
+  },
+
+  // MCP-reachable code: forbid stdout-corrupting writes. The MCP stdio
+  // transport writes JSON-RPC frames to stdout; per the spec, the server
+  // MUST NOT write anything to stdout that is not a valid MCP message.
+  // Diagnostics must go to stderr (console.error). Direct process.stdout.write
+  // bypasses the gate and is also forbidden in these dirs.
+  // cli/mcp.ts is included here even though it lives under cli/ — it is the
+  // MCP entrypoint and inherits stricter discipline than the rest of cli/.
+  {
+    files: [
+      'gitnexus/src/mcp/**/*.ts',
+      'gitnexus/src/core/lbug/**/*.ts',
+      'gitnexus/src/core/embeddings/**/*.ts',
+      'gitnexus/src/core/tree-sitter/**/*.ts',
+      'gitnexus/src/cli/mcp.ts',
+    ],
+    rules: {
+      'no-console': ['error', { allow: ['error'] }],
+      'no-restricted-syntax': ['error', ...mcpStdoutWriteSelectors],
    },
  },

@@ -78,6 +147,34 @@ export default [
    },
  },

+  // Prevent direct conn.close() / db.close() in the LadybugDB adapter (#1376).
+  // All close operations must go through safeClose() so the WAL is always
+  // flushed before the connection is released. The sole authorised call site
+  // inside safeClose itself uses an eslint-disable-next-line override.
+  //
+  // ESLint flat config REPLACES (not merges) `no-restricted-syntax` when
+  // multiple matching configs target the same file. lbug-adapter.ts is also
+  // covered by the MCP-reachable block above, so we spread the shared
+  // mcpStdoutWriteSelectors here alongside the safeClose selectors. Without
+  // this, lbug-adapter would silently lose its MCP stdout-write protection.
+  {
+    files: ['gitnexus/src/core/lbug/lbug-adapter.ts'],
+    rules: {
+      'no-restricted-syntax': [
+        'error',
+        ...mcpStdoutWriteSelectors,
+        {
+          selector: "CallExpression[callee.object.name='conn'][callee.property.name='close']",
+          message: 'Use safeClose() instead of calling conn.close() directly (#1376).',
+        },
+        {
+          selector: "CallExpression[callee.object.name='db'][callee.property.name='close']",
+          message: 'Use safeClose() instead of calling db.close() directly (#1376).',
+        },
+      ],
+    },
+  },
+
  // Disable formatting rules (prettier handles those)
  prettierConfig,
 ];
@@ -53,13 +53,13 @@ class MCPBridge:

        try:
            # Find gitnexus binary
-            gitnexus_bin = self._find_gitnexus()
-            if not gitnexus_bin:
+            gitnexus_cmd = self._find_gitnexus_command()
+            if not gitnexus_cmd:
                logger.error("GitNexus not found. Install with: npm install -g gitnexus")
                return False

            self.process = subprocess.Popen(
-                [gitnexus_bin, "mcp"],
+                [*gitnexus_cmd, "mcp"],
                stdin=subprocess.PIPE,
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
@@ -152,33 +152,34 @@ class MCPBridge:
                return contents[0].get("text", "")
        return None

-    def _find_gitnexus(self) -> str | None:
-        """Find the gitnexus CLI binary."""
+    def _find_gitnexus_command(self) -> list[str] | None:
+        """Find the gitnexus CLI command prefix."""
        # Check if npx is available (preferred - uses local install)
-        for cmd in ["npx"]:
-            try:
-                result = subprocess.run(
-                    [cmd, "gitnexus", "--version"],
-                    capture_output=True,
-                    text=True,
-                    timeout=MCP_FIND_GITNEXUS_TIMEOUT_SECONDS,
-                    cwd=self.repo_path,
-                )
-                if result.returncode == 0:
-                    return cmd  # Will use "npx gitnexus mcp"
-            except Exception:
-                continue
+        try:
+            result = subprocess.run(
+                ["npx", "gitnexus", "--version"],
+                stdin=subprocess.DEVNULL,
+                capture_output=True,
+                text=True,
+                timeout=MCP_FIND_GITNEXUS_TIMEOUT_SECONDS,
+                cwd=self.repo_path,
+            )
+            if result.returncode == 0:
+                return ["npx", "gitnexus"]
+        except Exception:
+            pass

        # Check for global install
        try:
            result = subprocess.run(
                ["gitnexus", "--version"],
+                stdin=subprocess.DEVNULL,
                capture_output=True,
                text=True,
                timeout=MCP_FIND_GITNEXUS_FALLBACK_TIMEOUT_SECONDS,
            )
            if result.returncode == 0:
-                return "gitnexus"
+                return ["gitnexus"]
        except Exception:
            pass

@@ -6,19 +6,19 @@ readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
    "mini-swe-agent>=2.0.0",
-    "litellm>=1.50.0,!=1.82.7,!=1.82.8",
+    "litellm!=1.82.7,!=1.82.8,>=1.83.7",
    "datasets>=3.0.0",
    "typer>=0.12.0",
    "rich>=13.0.0",
    "pyyaml>=6.0",
    "pandas>=2.0.0",
    "tabulate>=0.9.0",
-    "python-dotenv>=1.0.0",
+    "python-dotenv>=1.2.2",
 ]

 [project.optional-dependencies]
 dev = [
-    "pytest>=8.0.0",
+    "pytest>=9.0.3",
    "ruff>=0.5.0",
    "hypothesis>=6.88.0",
    "coverage>=7.6.0",
@@ -0,0 +1,170 @@
+"""Tests for MCPBridge._find_gitnexus_command() and subprocess spawn."""
+import subprocess
+import unittest
+from unittest.mock import MagicMock, call, patch
+
+
+class TestFindGitnexusCommand(unittest.TestCase):
+    """Verify _find_gitnexus_command() returns the correct command prefix."""
+
+    def _make_bridge(self):
+        from bridge.mcp_bridge import MCPBridge
+        return MCPBridge(repo_path="/fake/repo")
+
+    def _success(self):
+        r = MagicMock()
+        r.returncode = 0
+        return r
+
+    def _failure(self):
+        r = MagicMock()
+        r.returncode = 1
+        return r
+
+    def test_npx_path_returns_npx_gitnexus(self):
+        """When npx probe succeeds, command prefix is ['npx', 'gitnexus']."""
+        with patch("subprocess.run", return_value=self._success()) as mock_run:
+            bridge = self._make_bridge()
+            result = bridge._find_gitnexus_command()
+
+        self.assertEqual(result, ["npx", "gitnexus"])
+        mock_run.assert_called_once()
+        args = mock_run.call_args[0][0]
+        self.assertEqual(args, ["npx", "gitnexus", "--version"])
+
+    def test_global_path_returns_gitnexus(self):
+        """When npx probe fails but global install exists, prefix is ['gitnexus']."""
+        with patch("subprocess.run", side_effect=[self._failure(), self._success()]) as mock_run:
+            bridge = self._make_bridge()
+            result = bridge._find_gitnexus_command()
+
+        self.assertEqual(result, ["gitnexus"])
+        self.assertEqual(mock_run.call_count, 2)
+
+    def test_both_fail_returns_none(self):
+        """When both probes fail, returns None."""
+        with patch("subprocess.run", return_value=self._failure()):
+            bridge = self._make_bridge()
+            result = bridge._find_gitnexus_command()
+
+        self.assertIsNone(result)
+
+    def test_npx_exception_falls_back_to_global(self):
+        """When npx raises (not installed), falls back to global probe."""
+        with patch("subprocess.run", side_effect=[FileNotFoundError, self._success()]):
+            bridge = self._make_bridge()
+            result = bridge._find_gitnexus_command()
+
+        self.assertEqual(result, ["gitnexus"])
+
+    def test_both_raise_returns_none(self):
+        """When both probes raise exceptions, returns None."""
+        with patch("subprocess.run", side_effect=FileNotFoundError):
+            bridge = self._make_bridge()
+            result = bridge._find_gitnexus_command()
+
+        self.assertIsNone(result)
+
+    def test_stdin_devnull_on_npx_probe(self):
+        """npx probe must pass stdin=DEVNULL to prevent interactive blocking."""
+        with patch("subprocess.run", return_value=self._success()) as mock_run:
+            bridge = self._make_bridge()
+            bridge._find_gitnexus_command()
+
+        kwargs = mock_run.call_args[1]
+        self.assertEqual(kwargs.get("stdin"), subprocess.DEVNULL)
+
+    def test_stdin_devnull_on_global_probe(self):
+        """global probe must pass stdin=DEVNULL to prevent interactive blocking."""
+        with patch("subprocess.run", side_effect=[self._failure(), self._success()]) as mock_run:
+            bridge = self._make_bridge()
+            bridge._find_gitnexus_command()
+
+        global_call_kwargs = mock_run.call_args_list[1][1]
+        self.assertEqual(global_call_kwargs.get("stdin"), subprocess.DEVNULL)
+
+
+class TestStartSpawnCommand(unittest.TestCase):
+    """Verify start() spawns Popen with the correct argv."""
+
+    def _make_bridge(self):
+        from bridge.mcp_bridge import MCPBridge
+        return MCPBridge(repo_path="/fake/repo")
+
+    def test_npx_path_spawns_npx_gitnexus_mcp(self):
+        """When npx path found, Popen must receive ['npx', 'gitnexus', 'mcp']."""
+        bridge = self._make_bridge()
+
+        with patch.object(bridge, "_find_gitnexus_command", return_value=["npx", "gitnexus"]), \
+             patch("subprocess.Popen") as mock_popen, \
+             patch.object(bridge, "_send_request", return_value={"protocolVersion": "2024-11-05"}), \
+             patch.object(bridge, "_send_notification"):
+
+            mock_proc = MagicMock()
+            mock_proc.stdin = MagicMock()
+            mock_proc.stdout = MagicMock()
+            mock_proc.stderr = MagicMock()
+            mock_popen.return_value = mock_proc
+
+            bridge.start()
+
+        mock_popen.assert_called_once()
+        argv = mock_popen.call_args[0][0]
+        self.assertEqual(argv, ["npx", "gitnexus", "mcp"])
+
+    def test_global_path_spawns_gitnexus_mcp(self):
+        """When global path found, Popen must receive ['gitnexus', 'mcp']."""
+        bridge = self._make_bridge()
+
+        with patch.object(bridge, "_find_gitnexus_command", return_value=["gitnexus"]), \
+             patch("subprocess.Popen") as mock_popen, \
+             patch.object(bridge, "_send_request", return_value={"protocolVersion": "2024-11-05"}), \
+             patch.object(bridge, "_send_notification"):
+
+            mock_proc = MagicMock()
+            mock_proc.stdin = MagicMock()
+            mock_proc.stdout = MagicMock()
+            mock_proc.stderr = MagicMock()
+            mock_popen.return_value = mock_proc
+
+            bridge.start()
+
+        mock_popen.assert_called_once()
+        argv = mock_popen.call_args[0][0]
+        self.assertEqual(argv, ["gitnexus", "mcp"])
+
+    def test_no_shell_true(self):
+        """Popen must never be called with shell=True."""
+        bridge = self._make_bridge()
+
+        with patch.object(bridge, "_find_gitnexus_command", return_value=["npx", "gitnexus"]), \
+             patch("subprocess.Popen") as mock_popen, \
+             patch.object(bridge, "_send_request", return_value={"protocolVersion": "2024-11-05"}), \
+             patch.object(bridge, "_send_notification"):
+
+            mock_proc = MagicMock()
+            mock_proc.stdin = MagicMock()
+            mock_proc.stdout = MagicMock()
+            mock_proc.stderr = MagicMock()
+            mock_popen.return_value = mock_proc
+
+            bridge.start()
+
+        kwargs = mock_popen.call_args[1]
+        self.assertNotEqual(kwargs.get("shell"), True)
+
+    def test_gitnexus_not_found_returns_false(self):
+        """start() returns False and does not call Popen when gitnexus not found."""
+        bridge = self._make_bridge()
+
+        with patch.object(bridge, "_find_gitnexus_command", return_value=None), \
+             patch("subprocess.Popen") as mock_popen:
+
+            result = bridge.start()
+
+        self.assertFalse(result)
+        mock_popen.assert_not_called()
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -21,7 +21,7 @@ wheels = [

 [[package]]
 name = "aiohttp"
-version = "3.13.3"
+version = "3.13.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "aiohappyeyeballs" },
@@ -32,93 +32,93 @@ dependencies = [
    { name = "propcache" },
    { name = "yarl" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/50/42/32cf8e7704ceb4481406eb87161349abb46a57fee3f008ba9cb610968646/aiohttp-3.13.3.tar.gz", hash = "sha256:a949eee43d3782f2daae4f4a2819b2cb9b0c5d3b7f7a927067cc84dafdbb9f88", size = 7844556, upload-time = "2026-01-03T17:33:05.204Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/45/4a/064321452809dae953c1ed6e017504e72551a26b6f5708a5a80e4bf556ff/aiohttp-3.13.4.tar.gz", hash = "sha256:d97a6d09c66087890c2ab5d49069e1e570583f7ac0314ecf98294c1b6aaebd38", size = 7859748, upload-time = "2026-03-28T17:19:40.6Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/f1/4c/a164164834f03924d9a29dc3acd9e7ee58f95857e0b467f6d04298594ebb/aiohttp-3.13.3-cp311-cp311-macosx_10_9_universal2.whl", hash = "sha256:5b6073099fb654e0a068ae678b10feff95c5cae95bbfcbfa7af669d361a8aa6b", size = 746051, upload-time = "2026-01-03T17:29:43.287Z" },
-    { url = "https://files.pythonhosted.org/packages/82/71/d5c31390d18d4f58115037c432b7e0348c60f6f53b727cad33172144a112/aiohttp-3.13.3-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:1cb93e166e6c28716c8c6aeb5f99dfb6d5ccf482d29fe9bf9a794110e6d0ab64", size = 499234, upload-time = "2026-01-03T17:29:44.822Z" },
-    { url = "https://files.pythonhosted.org/packages/0e/c9/741f8ac91e14b1d2e7100690425a5b2b919a87a5075406582991fb7de920/aiohttp-3.13.3-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:28e027cf2f6b641693a09f631759b4d9ce9165099d2b5d92af9bd4e197690eea", size = 494979, upload-time = "2026-01-03T17:29:46.405Z" },
-    { url = "https://files.pythonhosted.org/packages/75/b5/31d4d2e802dfd59f74ed47eba48869c1c21552c586d5e81a9d0d5c2ad640/aiohttp-3.13.3-cp311-cp311-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:3b61b7169ababd7802f9568ed96142616a9118dd2be0d1866e920e77ec8fa92a", size = 1748297, upload-time = "2026-01-03T17:29:48.083Z" },
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 ]

 [[package]]
@@ -1302,7 +1302,7 @@ wheels = [

 [[package]]
 name = "openai"
-version = "2.29.0"
+version = "2.24.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "anyio" },
@@ -1314,9 +1314,9 @@ dependencies = [
    { name = "tqdm" },
    { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/b4/15/203d537e58986b5673e7f232453a2a2f110f22757b15921cbdeea392e520/openai-2.29.0.tar.gz", hash = "sha256:32d09eb2f661b38d3edd7d7e1a2943d1633f572596febe64c0cd370c86d52bec", size = 671128, upload-time = "2026-03-17T17:53:49.599Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/55/13/17e87641b89b74552ed408a92b231283786523edddc95f3545809fab673c/openai-2.24.0.tar.gz", hash = "sha256:1e5769f540dbd01cb33bc4716a23e67b9d695161a734aff9c5f925e2bf99a673", size = 658717, upload-time = "2026-02-24T20:02:07.958Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/c9/30/844dc675ee6902579b8eef01ed23917cc9319a1c9c0c14ec6e39340c96d0/openai-2.24.0-py3-none-any.whl", hash = "sha256:fed30480d7d6c884303287bde864980a4b137b60553ffbcf9ab4a233b7a73d94", size = 1120122, upload-time = "2026-02-24T20:02:05.669Z" },
 ]

 [[package]]
@@ -1690,7 +1690,7 @@ wheels = [

 [[package]]
 name = "pytest"
-version = "9.0.2"
+version = "9.0.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -1699,9 +1699,9 @@ dependencies = [
    { name = "pluggy" },
    { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/d1/db/7ef3487e0fb0049ddb5ce41d3a49c235bf9ad299b6a25d5780a89f19230f/pytest-9.0.2.tar.gz", hash = "sha256:75186651a92bd89611d1d9fc20f0b4345fd827c41ccd5c299a868a05d70edf11", size = 1568901, upload-time = "2025-12-06T21:30:51.014Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/7d/0d/549bd94f1a0a402dc8cf64563a117c0f3765662e2e668477624baeec44d5/pytest-9.0.3.tar.gz", hash = "sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c", size = 1572165, upload-time = "2026-04-07T17:16:18.027Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/d4/24/a372aaf5c9b7208e7112038812994107bc65a84cd00e0354a88c2c77a617/pytest-9.0.3-py3-none-any.whl", hash = "sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9", size = 375249, upload-time = "2026-04-07T17:16:16.13Z" },
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 [[package]]
@@ -1900,7 +1900,7 @@ wheels = [

 [[package]]
 name = "requests"
-version = "2.32.5"
+version = "2.33.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "certifi" },
@@ -1908,9 +1908,9 @@ dependencies = [
    { name = "idna" },
    { name = "urllib3" },
 ]
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+sdist = { url = "https://files.pythonhosted.org/packages/34/64/8860370b167a9721e8956ae116825caff829224fbca0ca6e7bf8ddef8430/requests-2.33.0.tar.gz", hash = "sha256:c7ebc5e8b0f21837386ad0e1c8fe8b829fa5f544d8df3b2253bff14ef29d7652", size = 134232, upload-time = "2026-03-25T15:10:41.586Z" }
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+    { url = "https://files.pythonhosted.org/packages/56/5d/c814546c2333ceea4ba42262d8c4d55763003e767fa169adc693bd524478/requests-2.33.0-py3-none-any.whl", hash = "sha256:3324635456fa185245e24865e810cecec7b4caf933d7eb133dcde67d48cee69b", size = 65017, upload-time = "2026-03-25T15:10:40.382Z" },
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 [[package]]
@@ -2224,7 +2224,7 @@ wheels = [

 [[package]]
 name = "typer"
-version = "0.24.1"
+version = "0.23.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "annotated-doc" },
@@ -2232,9 +2232,9 @@ dependencies = [
    { name = "rich" },
    { name = "shellingham" },
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+sdist = { url = "https://files.pythonhosted.org/packages/fd/07/b822e1b307d40e263e8253d2384cf98c51aa2368cc7ba9a07e523a1d964b/typer-0.23.1.tar.gz", hash = "sha256:2070374e4d31c83e7b61362fd859aa683576432fd5b026b060ad6b4cd3b86134", size = 120047, upload-time = "2026-02-13T10:04:30.984Z" }
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+    { url = "https://files.pythonhosted.org/packages/d5/91/9b286ab899c008c2cb05e8be99814807e7fbbd33f0c0c960470826e5ac82/typer-0.23.1-py3-none-any.whl", hash = "sha256:3291ad0d3c701cbf522012faccfbb29352ff16ad262db2139e6b01f15781f14e", size = 56813, upload-time = "2026-02-13T10:04:32.008Z" },
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 [[package]]
@@ -31,11 +31,25 @@ function readInput() {
 * Find the .gitnexus directory by walking up from startDir.
 * Returns the path to .gitnexus/ or null if not found.
 */
-function findGitNexusDir(startDir) {
-  let dir = startDir || process.cwd();
+function isGlobalRegistryDir(candidate) {
+  if (fs.existsSync(path.join(candidate, 'meta.json'))) return false;
+  return (
+    fs.existsSync(path.join(candidate, 'registry.json')) ||
+    fs.existsSync(path.join(candidate, 'repos'))
+  );
+}
+
+/**
+ * Walk up from `startDir` looking for a non-registry `.gitnexus/` folder.
+ * Returns the path to `.gitnexus/` or null if not found within 5 levels.
+ */
+function walkForGitNexusDir(startDir) {
+  let dir = startDir;
  for (let i = 0; i < 5; i++) {
    const candidate = path.join(dir, '.gitnexus');
-    if (fs.existsSync(candidate)) return candidate;
+    if (fs.existsSync(candidate)) {
+      if (!isGlobalRegistryDir(candidate)) return candidate;
+    }
    const parent = path.dirname(dir);
    if (parent === dir) break;
    dir = parent;
@@ -43,6 +57,51 @@ function findGitNexusDir(startDir) {
  return null;
 }

+/**
+ * Resolve the canonical (main) worktree root for `cwd`, when `cwd` is inside
+ * any git working tree — including a *linked* worktree created via
+ * `git worktree add`. Linked worktrees never contain `.gitnexus/`, so the
+ * upward walk from cwd alone misses the index. Returns null when `cwd` is
+ * not inside a git repo or `git` is not available.
+ *
+ * Implementation: `git rev-parse --git-common-dir` resolves to the canonical
+ * `.git/` directory (or `.git/worktrees/...` parent) that is shared across
+ * all linked worktrees. The canonical repo root is its parent directory.
+ */
+function findCanonicalRepoRoot(cwd) {
+  try {
+    const result = spawnSync('git', ['rev-parse', '--path-format=absolute', '--git-common-dir'], {
+      encoding: 'utf-8',
+      timeout: 2000,
+      cwd,
+      stdio: ['pipe', 'pipe', 'pipe'],
+    });
+    if (result.error || result.status !== 0) return null;
+    const commonDir = (result.stdout || '').trim();
+    if (!commonDir || !path.isAbsolute(commonDir)) return null;
+    return path.dirname(commonDir);
+  } catch {
+    return null;
+  }
+}
+
+function findGitNexusDir(startDir) {
+  const cwd = startDir || process.cwd();
+
+  // Fast path: the cwd is inside the canonical repo (most common case).
+  const fromCwd = walkForGitNexusDir(cwd);
+  if (fromCwd) return fromCwd;
+
+  // Fallback: cwd may be inside a linked git worktree whose `.gitnexus/`
+  // only lives in the canonical repo root. Resolve the shared git dir
+  // and retry from there.
+  const canonicalRoot = findCanonicalRepoRoot(cwd);
+  if (canonicalRoot && canonicalRoot !== cwd) {
+    return walkForGitNexusDir(canonicalRoot);
+  }
+  return null;
+}
+
 /**
 * Extract search pattern from tool input.
 */
@@ -10,6 +10,10 @@
    ".": {
      "types": "./dist/index.d.ts",
      "default": "./dist/index.js"
+    },
+    "./test-helpers": {
+      "types": "./dist/test-helpers.d.ts",
+      "default": "./dist/test-helpers.js"
    }
  },
  "scripts": {
@@ -134,11 +134,43 @@ export type {
 // Scope tree spine + position lookup (RFC §2.2 + §3.1; Ring 2 SHARED #912)
 export { makeScopeId, clearScopeIdInternPool } from './scope-resolution/scope-id.js';
 export type { ScopeIdInput } from './scope-resolution/scope-id.js';
-export { buildScopeTree, ScopeTreeInvariantError } from './scope-resolution/scope-tree.js';
+export {
+  buildScopeTree,
+  canParentScope,
+  ScopeTreeInvariantError,
+} from './scope-resolution/scope-tree.js';
 export type { ScopeTree } from './scope-resolution/scope-tree.js';
 export { buildPositionIndex } from './scope-resolution/position-index.js';
 export type { PositionIndex } from './scope-resolution/position-index.js';

+// Resilient fetch primitives — bounded retries + per-process circuit breaker.
+// Test-only helpers (`__resetBreakerRegistry__`, `classifyOutcome`) are
+// reachable via the separate `gitnexus-shared/test-helpers` subpath; do
+// NOT add them here. Production consumers must not call them.
+export { withRetry, computeBackoffMs } from './integrations/retry.js';
+export type { RetryOptions, RetryDecision } from './integrations/retry.js';
+export { CircuitBreaker, CircuitOpenError, getBreaker } from './integrations/circuit-breaker.js';
+export type { CircuitBreakerOptions } from './integrations/circuit-breaker.js';
+export {
+  resilientFetch,
+  ResilientFetchExhaustedError,
+  RETRY_AFTER_CAP_MS,
+  parseRetryAfter,
+} from './integrations/resilient-fetch.js';
+export type { ResilientFetchOptions } from './integrations/resilient-fetch.js';
+
+// Understand-Quickly registry integration (opt-in)
+export {
+  UNDERSTAND_QUICKLY_DISPATCH_URL,
+  UNDERSTAND_QUICKLY_EVENT_TYPE,
+  UNDERSTAND_QUICKLY_TOKEN_ENV,
+  buildUqDispatchPayload,
+  isValidOwnerRepo,
+  parseOwnerRepoFromRemote,
+  stripGitSuffix,
+} from './integrations/understand-quickly.js';
+export type { UqDispatchPayload } from './integrations/understand-quickly.js';
+
 // Shadow-mode diff + aggregation (RFC §6.3; Ring 2 SHARED #918)
 export { diffResolutions } from './scope-resolution/shadow/diff.js';
 export type {
@@ -0,0 +1,273 @@
+/**
+ * Per-process circuit breaker.
+ *
+ * Closed -> Open transition fires after `failureThreshold` consecutive
+ * failures. While Open, `check` throws `CircuitOpenError` until
+ * `cooldownMs` has elapsed since the breaker tripped. The first call
+ * after the cooldown enters Half-Open and consumes the *probe permit*:
+ * a recorded success returns to Closed; a recorded failure flips back
+ * to Open with a fresh timestamp.
+ *
+ * Half-open admits exactly one in-flight probe at a time. Concurrent
+ * callers attempting `check()` while a probe is outstanding receive
+ * `CircuitOpenError` with `retryAfterMs = halfOpenRetryAfterMs` (default
+ * 1000ms; configurable). This prevents the recovery-time thundering
+ * herd that defeats the breaker's "fail fast" promise.
+ *
+ * Outcome reporting splits permit-release from state-resolution:
+ *   - `recordSuccess` — releases the probe permit, resets the failure
+ *     counter, transitions to Closed. Reserved for true 2xx/3xx outcomes.
+ *   - `recordFailure` — releases the probe permit, increments the
+ *     consecutive-failure counter, transitions to Open with a fresh
+ *     `openedAt` (when called from Half-Open or when the threshold
+ *     trips from Closed).
+ *   - `recordNeutral` — releases the probe permit, BUT leaves state and
+ *     counter untouched. Used for outcomes that are neither evidence of
+ *     backend health nor evidence of backend failure (caller-driven
+ *     cancellation, local timeout, terminal 4xx client errors). Critical
+ *     design point: if `recordNeutral` did not release the permit, a
+ *     single `TimeoutError` from per-attempt `AbortSignal.timeout` would
+ *     route through `recordNeutral` and permanently park the breaker in
+ *     half-open until process restart. Releasing the permit while leaving
+ *     state half-open keeps the "neutral doesn't claim health" semantic
+ *     without creating that wedge.
+ *
+ * Pairing invariant: every successful `check()` MUST be paired with
+ * exactly one `record*()` on every code path including throws. Direct
+ * consumers should wrap the protected operation in `try/finally`:
+ *
+ *   breaker.check();
+ *   try {
+ *     const result = await operation();
+ *     breaker.recordSuccess();
+ *     return result;
+ *   } catch (err) {
+ *     // classify err and call recordFailure / recordNeutral / etc.
+ *     throw err;
+ *   }
+ *
+ * `resilientFetch`'s catch-all on `fetchImpl` already satisfies this
+ * for that consumer.
+ *
+ * Atomicity model: the half-open gate relies on JavaScript event-loop
+ * single-threadedness within a synchronous `check()` body. There is no
+ * `await` inside `check()`; concurrent callers serialize on microtask
+ * order, and exactly one observes `probeInFlight === false`. Do not
+ * introduce `await` inside `check()` without revisiting the gate. If
+ * this code is ever ported to a runtime with shared-memory threads
+ * (Node `worker_threads` with `SharedArrayBuffer`, Web Workers with
+ * shared registries), the boolean must become an atomic CAS — Resilience4j
+ * and Hystrix use atomic permits *because* they run in JVM thread pools.
+ *
+ * Runtime-agnostic: depends only on a `now()` clock and standard JS —
+ * no Node-only imports. Tests inject `now` to advance the clock
+ * deterministically without `vi.useFakeTimers()`.
+ */
+
+export class CircuitOpenError extends Error {
+  override readonly name = 'CircuitOpenError';
+  /** Approximate wait time before the breaker may transition to Half-Open
+   *  (or before the in-flight probe is expected to resolve). */
+  readonly retryAfterMs: number;
+
+  constructor(retryAfterMs: number, key?: string) {
+    super(
+      key
+        ? `Circuit '${key}' is open; retry in ${Math.ceil(retryAfterMs / 1000)}s`
+        : `Circuit is open; retry in ${Math.ceil(retryAfterMs / 1000)}s`,
+    );
+    this.retryAfterMs = retryAfterMs;
+  }
+}
+
+export interface CircuitBreakerOptions {
+  /** Consecutive failures required to trip Closed -> Open. */
+  failureThreshold?: number;
+  /** Milliseconds Open before the next call may probe (Half-Open). */
+  cooldownMs?: number;
+  /**
+   * Milliseconds to suggest in `CircuitOpenError.retryAfterMs` when the
+   * breaker is Half-Open with the probe permit consumed. Default 1000ms.
+   * Consumers with long-running protected ops (LLM streaming, large
+   * uploads) should raise this — the cooldown clock is no longer the
+   * right answer because cooldown has elapsed. Returning 0 invites
+   * retry storms; returning the full cooldown misleads about wait.
+   */
+  halfOpenRetryAfterMs?: number;
+  /** Optional key for error messages and registry lookups. */
+  key?: string;
+  /** Clock override — defaults to `Date.now`. Tests inject deterministic time. */
+  now?: () => number;
+}
+
+type State = 'closed' | 'open' | 'half-open';
+
+export class CircuitBreaker {
+  private readonly failureThreshold: number;
+  private readonly cooldownMs: number;
+  private readonly halfOpenRetryAfterMs: number;
+  private readonly key: string | undefined;
+  private readonly now: () => number;
+
+  private state: State = 'closed';
+  private consecutiveFailures = 0;
+  private openedAt: number | null = null;
+  /**
+   * True between a successful `check()` and the next `record*()` call
+   * during Half-Open. Gates concurrent callers from stampeding a still-
+   * recovering dependency. Boolean rather than counter — single-permit
+   * is the conservative end of the Hystrix/Resilience4j spectrum.
+   */
+  private probeInFlight = false;
+
+  constructor(opts: CircuitBreakerOptions = {}) {
+    this.failureThreshold = opts.failureThreshold ?? 3;
+    this.cooldownMs = opts.cooldownMs ?? 30_000;
+    this.halfOpenRetryAfterMs = opts.halfOpenRetryAfterMs ?? 1_000;
+    this.key = opts.key;
+    this.now = opts.now ?? (() => Date.now());
+  }
+
+  /**
+   * Throw `CircuitOpenError` if the breaker won't admit this call.
+   * Otherwise consume the half-open probe permit (if applicable) and
+   * return so the caller can attempt the protected work.
+   *
+   * Three rejection paths:
+   *   1. Open and still in cooldown → throws with `retryAfterMs` =
+   *      remaining cooldown.
+   *   2. Open with cooldown elapsed AND a probe is already in flight
+   *      (race: another caller transitioned to half-open and grabbed
+   *      the permit on a microtask before us) → throws with
+   *      `halfOpenRetryAfterMs`.
+   *   3. Half-Open with probe in flight → throws with `halfOpenRetryAfterMs`.
+   *
+   * **Pairing invariant**: every successful return from `check()` MUST
+   * be paired with exactly one `recordSuccess` / `recordFailure` /
+   * `recordNeutral` on every code path including thrown exceptions.
+   * Failing to pair leaves the probe permit consumed forever and
+   * wedges the breaker. See file-header JSDoc for the canonical
+   * try/finally pattern.
+   */
+  check(): void {
+    if (this.state === 'open' && this.openedAt !== null) {
+      const elapsed = this.now() - this.openedAt;
+      if (elapsed < this.cooldownMs) {
+        throw new CircuitOpenError(this.cooldownMs - elapsed, this.key);
+      }
+      // Cooldown elapsed — transition to Half-Open. The very next
+      // `probeInFlight` check below decides whether THIS caller gets
+      // the permit or hits the gate.
+      this.state = 'half-open';
+    }
+
+    if (this.state === 'half-open') {
+      if (this.probeInFlight) {
+        throw new CircuitOpenError(this.halfOpenRetryAfterMs, this.key);
+      }
+      this.probeInFlight = true;
+    }
+    // Closed state falls through silently.
+  }
+
+  recordSuccess(): void {
+    this.probeInFlight = false;
+    this.consecutiveFailures = 0;
+    this.state = 'closed';
+    this.openedAt = null;
+  }
+
+  recordFailure(): void {
+    this.probeInFlight = false;
+    this.consecutiveFailures += 1;
+    if (this.state === 'half-open' || this.consecutiveFailures >= this.failureThreshold) {
+      this.state = 'open';
+      this.openedAt = this.now();
+    }
+  }
+
+  /**
+   * Releases the probe permit BUT leaves state and counter untouched.
+   * Use when an attempt produced a response or error that should not
+   * influence breaker health in either direction — caller-driven aborts,
+   * local AbortSignal timeouts, terminal 4xx client errors.
+   *
+   * Why permit-release-without-state-resolution: if `recordNeutral` did
+   * not clear `probeInFlight`, a single `TimeoutError` from per-attempt
+   * `AbortSignal.timeout` (which routes through neutral classification)
+   * would permanently park the breaker in half-open. Since timeouts are
+   * an *expected* outcome under flaky-dependency conditions, the cited
+   * "per-attempt timeout bounds the stuck state" mitigation would itself
+   * be the trigger for a permanent wedge. Releasing the permit closes
+   * that loop while keeping the "neutral doesn't claim dependency
+   * health" semantic.
+   *
+   * Calling `recordSuccess` for these would erase legitimate prior
+   * failure signal; calling `recordFailure` would trip the breaker for
+   * outcomes the backend isn't responsible for.
+   */
+  recordNeutral(): void {
+    this.probeInFlight = false;
+    // State and consecutiveFailures are preserved by design.
+  }
+
+  /**
+   * Pure read — no state mutation, no permit accounting. Returns the
+   * *would-be* state at the current instant: 'half-open' if the breaker
+   * is open with cooldown elapsed (regardless of whether a probe is in
+   * flight), 'open' if open and still in cooldown, 'closed' otherwise.
+   *
+   * Inspection-only; safe to call from tests without consuming a probe
+   * permit. The implicit Open -> Half-Open transition that mutates
+   * `state` lives in `check()` only.
+   */
+  getState(): State {
+    if (this.state === 'open' && this.openedAt !== null) {
+      const elapsed = this.now() - this.openedAt;
+      if (elapsed >= this.cooldownMs) return 'half-open';
+    }
+    return this.state;
+  }
+  getConsecutiveFailures(): number {
+    return this.consecutiveFailures;
+  }
+  /** Inspection-only test accessor for the half-open probe permit. */
+  isProbeInFlight(): boolean {
+    return this.probeInFlight;
+  }
+  /** Timestamp (ms since epoch) when the breaker last transitioned to Open,
+   *  or `null` if it's currently Closed. Useful for computing remaining
+   *  cooldown without consuming a probe permit via `check()`. */
+  getOpenedAt(): number | null {
+    return this.openedAt;
+  }
+  /** Configured cooldown duration in milliseconds. */
+  getCooldownMs(): number {
+    return this.cooldownMs;
+  }
+}
+
+// ─── Per-process registry ────────────────────────────────────────────
+//
+// Single shared map keyed on caller-chosen strings. Used by
+// `resilient-fetch.ts` so multiple call sites targeting the same logical
+// endpoint share breaker state. Per-process only — not persisted.
+
+const registry = new Map<string, CircuitBreaker>();
+
+export function getBreaker(key: string, opts?: CircuitBreakerOptions): CircuitBreaker {
+  let breaker = registry.get(key);
+  if (!breaker) {
+    breaker = new CircuitBreaker({ ...opts, key });
+    registry.set(key, breaker);
+  }
+  return breaker;
+}
+
+/**
+ * Test-only: clear all registered breakers. Tests must call this in
+ * `beforeEach` to prevent breaker state from leaking across test cases.
+ */
+export function __resetBreakerRegistry__(): void {
+  registry.clear();
+}
@@ -0,0 +1,279 @@
+/**
+ * `resilientFetch` — fetch wrapped in retry + circuit breaker, with
+ * GitHub-flavoured retry classification baked in (Retry-After parsing,
+ * 401/403/404/422 treated as terminal client errors).
+ *
+ * Designed for the `gitnexus publish` GitHub `repository_dispatch`
+ * call, but the classification rules apply to any GitHub REST endpoint.
+ * Runtime-agnostic — no Node-only imports.
+ */
+
+import {
+  CircuitBreaker,
+  CircuitOpenError,
+  getBreaker,
+  type CircuitBreakerOptions,
+} from './circuit-breaker.js';
+import { computeBackoffMs, type RetryOptions } from './retry.js';
+
+export { CircuitOpenError };
+
+export interface ResilientFetchOptions {
+  /** Optional fetch implementation override. Defaults to `globalThis.fetch`. */
+  fetchImpl?: typeof fetch;
+  /**
+   * Logical key for the breaker. Defaults to `<host><pathname>` of the
+   * request URL — call sites targeting the same endpoint share breaker
+   * state regardless of query-string differences.
+   */
+  breakerKey?: string;
+  /** Per-call breaker override. Used for tests and one-off configuration. */
+  breaker?: CircuitBreaker;
+  /** Tuning knobs for the breaker registered under `breakerKey`. */
+  breakerOptions?: CircuitBreakerOptions;
+  /** Tuning knobs for the retry helper. */
+  retry?: Partial<Pick<RetryOptions, 'maxAttempts' | 'baseDelayMs' | 'capDelayMs'>> & {
+    sleep?: RetryOptions['sleep'];
+    random?: RetryOptions['random'];
+  };
+  /** Clock override propagated into Retry-After HTTP-date math and breaker. */
+  now?: () => number;
+}
+
+/** Cap on any single Retry-After wait — protects CLI from a buggy registry. */
+export const RETRY_AFTER_CAP_MS = 30_000;
+
+const DEFAULT_RETRY = {
+  maxAttempts: 3,
+  baseDelayMs: 500,
+  capDelayMs: 5_000,
+};
+
+/**
+ * Parse a `Retry-After` header value into milliseconds.
+ * Accepts either a delta-seconds integer (`"30"`) or an HTTP-date.
+ * Returns null on parse failure or negative deltas.
+ */
+export function parseRetryAfter(value: string | null, now: () => number = Date.now): number | null {
+  if (!value) return null;
+  const trimmed = value.trim();
+  if (trimmed === '') return null;
+
+  if (/^[0-9]+$/.test(trimmed)) {
+    const seconds = parseInt(trimmed, 10);
+    if (Number.isNaN(seconds) || seconds < 0) return null;
+    return seconds * 1000;
+  }
+
+  const target = Date.parse(trimmed);
+  if (Number.isNaN(target)) return null;
+  const delta = target - now();
+  return delta >= 0 ? delta : 0;
+}
+
+/** Internal: outcome classification used by the resilientFetch loop. */
+type Outcome =
+  | { kind: 'success'; resp: Response }
+  | { kind: 'terminal-client'; resp: Response } // 4xx other than 429: no retry, breaker neutral
+  | { kind: 'retryable-status'; resp: Response; afterMs: number | undefined } // 5xx, 429
+  | { kind: 'terminal-network'; err: unknown } // TimeoutError or AbortError: no retry, breaker neutral
+  | { kind: 'retryable-network'; err: unknown }; // DNS, ECONNRESET, etc.
+
+/** Exported for unit tests. */
+export function classifyOutcome(
+  result: { kind: 'error'; err: unknown } | { kind: 'response'; resp: Response },
+  now: () => number,
+): Outcome {
+  if (result.kind === 'error') {
+    // Both timer-fired aborts (`AbortSignal.timeout()` → `TimeoutError`)
+    // and caller-driven aborts (`AbortController.abort()` → `AbortError`)
+    // are terminal: retrying against an already-aborted signal would
+    // fail again immediately, and neither outcome reflects backend
+    // health. They route through the breaker's neutral path.
+    if (
+      result.err instanceof DOMException &&
+      (result.err.name === 'TimeoutError' || result.err.name === 'AbortError')
+    ) {
+      return { kind: 'terminal-network', err: result.err };
+    }
+    return { kind: 'retryable-network', err: result.err };
+  }
+  const resp = result.resp;
+  if (resp.status >= 200 && resp.status < 400) return { kind: 'success', resp };
+  if (resp.status === 429) {
+    // `resp.headers` is always present on a real `Response`, but tests
+    // sometimes stub `fetch` with a plain `{ ok, status }` object. Be
+    // defensive — a missing `Retry-After` falls through to exponential
+    // backoff, which is the correct behaviour anyway.
+    const retryAfterHeader =
+      typeof resp.headers?.get === 'function' ? resp.headers.get('Retry-After') : null;
+    const parsed = parseRetryAfter(retryAfterHeader, now);
+    return {
+      kind: 'retryable-status',
+      resp,
+      afterMs: parsed !== null ? Math.min(parsed, RETRY_AFTER_CAP_MS) : undefined,
+    };
+  }
+  if (resp.status >= 500) return { kind: 'retryable-status', resp, afterMs: undefined };
+  return { kind: 'terminal-client', resp };
+}
+
+const defaultSleep = (ms: number): Promise<void> =>
+  new Promise((resolve) => setTimeout(resolve, ms));
+
+function defaultBreakerKey(input: string | URL): string {
+  try {
+    const url = typeof input === 'string' ? new URL(input) : input;
+    return `${url.host}${url.pathname}`;
+  } catch {
+    return String(input);
+  }
+}
+
+/** Final error thrown when retries are exhausted on a 5xx / 429. */
+export class ResilientFetchExhaustedError extends Error {
+  override readonly name = 'ResilientFetchExhaustedError';
+  constructor(public readonly response: Response) {
+    super(`Request failed after retries (HTTP ${response.status})`);
+  }
+}
+
+/**
+ * Wrap `fetch` with bounded retries and a per-process circuit breaker.
+ *
+ * Semantics:
+ * - 5xx and 429 responses are retried; 429 honors `Retry-After` (capped).
+ * - Network throws are retried unless they are `TimeoutError` DOMExceptions.
+ * - Timeouts and 4xx (other than 429) are returned/thrown without retry
+ *   AND without incrementing the breaker — they reflect caller config
+ *   or local network state, not registry health.
+ * - Each `fetch` call carries the caller-supplied `signal` (e.g. an
+ *   `AbortSignal.timeout()`) — that timeout bounds each individual
+ *   attempt, not the whole retry sequence.
+ * - When the breaker is open, throws `CircuitOpenError` synchronously
+ *   without invoking `fetch`.
+ * - When retries are exhausted on a 5xx / 429, throws
+ *   `ResilientFetchExhaustedError` carrying the last response.
+ *
+ * Cumulative wall-clock budget:
+ *   maxAttempts × (per-attempt-timeout + capDelayMs)
+ *   With defaults (3, 500ms base, 5000ms cap) and a typical 15s per-attempt
+ *   timeout from the caller's signal, worst case is ~3 × (15s + 5s) = 60s.
+ *   Callers that want a tighter total bound should reduce `maxAttempts` or
+ *   wrap `resilientFetch` in their own outer `AbortSignal.timeout()`.
+ */
+export async function resilientFetch(
+  input: string | URL,
+  init: RequestInit | undefined,
+  opts: ResilientFetchOptions = {},
+): Promise<Response> {
+  const fetchImpl = opts.fetchImpl ?? globalThis.fetch;
+  const now = opts.now ?? (() => Date.now());
+  const breaker =
+    opts.breaker ?? getBreaker(opts.breakerKey ?? defaultBreakerKey(input), opts.breakerOptions);
+
+  const retryConfig = {
+    maxAttempts: opts.retry?.maxAttempts ?? DEFAULT_RETRY.maxAttempts,
+    baseDelayMs: opts.retry?.baseDelayMs ?? DEFAULT_RETRY.baseDelayMs,
+    capDelayMs: opts.retry?.capDelayMs ?? DEFAULT_RETRY.capDelayMs,
+  };
+  const sleep = opts.retry?.sleep ?? defaultSleep;
+  const random = opts.retry?.random ?? Math.random;
+
+  // Fail fast on an open breaker, before invoking fetch.
+  breaker.check();
+
+  for (let attempt = 0; attempt < retryConfig.maxAttempts; attempt++) {
+    let result: { kind: 'error'; err: unknown } | { kind: 'response'; resp: Response };
+    try {
+      // CodeQL js/server-side-request-forgery — flagged because `input`
+      // is caller-supplied. Suppressed: every concrete caller passes
+      // either a hardcoded URL constant (UNDERSTAND_QUICKLY_DISPATCH_URL,
+      // OpenRouter base URL) or a value derived from configuration
+      // (env vars, saved settings, the local backend URL). User-input
+      // request fields (e.g. PR title, repo name) never flow into
+      // `input`. Validating URL shape here would push false-positive
+      // rejection onto every caller — wrong layer for the check.
+      // lgtm[js/server-side-request-forgery]
+      // codeql[js/server-side-request-forgery]
+      const resp = await fetchImpl(input, init);
+      result = { kind: 'response', resp };
+    } catch (err) {
+      result = { kind: 'error', err };
+    }
+
+    const outcome = classifyOutcome(result, now);
+
+    switch (outcome.kind) {
+      case 'success':
+        breaker.recordSuccess();
+        return outcome.resp;
+
+      case 'terminal-client':
+        // 4xx: do not count as breaker failure (the server is healthy
+        // and rejecting our request — auth, scope, or routing). But
+        // also do NOT call recordSuccess: a 401 sandwiched between
+        // 5xx responses would otherwise erase the running outage
+        // signal. The breaker's neutral path leaves state untouched.
+        breaker.recordNeutral();
+        return outcome.resp;
+
+      case 'terminal-network':
+        // Either `AbortSignal.timeout()` fired locally OR an external
+        // caller cancelled the request via AbortController. The server
+        // never had a chance to answer; this reflects the user's
+        // network or an explicit cancel, not registry health. Don't
+        // punish the breaker AND don't reset its outage signal.
+        breaker.recordNeutral();
+        throw outcome.err;
+
+      case 'retryable-status':
+        if (attempt + 1 >= retryConfig.maxAttempts) {
+          breaker.recordFailure();
+          throw new ResilientFetchExhaustedError(outcome.resp);
+        }
+        await sleep(
+          computeBackoffMs(
+            attempt,
+            retryConfig.baseDelayMs,
+            retryConfig.capDelayMs,
+            outcome.afterMs,
+            random,
+          ),
+        );
+        break;
+
+      case 'retryable-network':
+        if (attempt + 1 >= retryConfig.maxAttempts) {
+          breaker.recordFailure();
+          throw outcome.err;
+        }
+        await sleep(
+          computeBackoffMs(
+            attempt,
+            retryConfig.baseDelayMs,
+            retryConfig.capDelayMs,
+            undefined,
+            random,
+          ),
+        );
+        break;
+
+      default: {
+        // Exhaustiveness guard. If a sixth `Outcome` kind is added in
+        // future, TypeScript will refuse to assign it to `never` and
+        // this line forces the maintainer to add an explicit arm
+        // rather than silently fall through to retry/no-retry behaviour.
+        const _exhaustive: never = outcome;
+        throw new Error(`resilientFetch: unhandled outcome ${JSON.stringify(_exhaustive)}`);
+      }
+    }
+  }
+
+  // Unreachable: every iteration of the loop either returns (success
+  // / terminal-client) or throws (terminal-network / retry exhaustion).
+  // The throw is here purely so TypeScript's control-flow analysis sees
+  // the function never falls off the end without producing `Promise<Response>`.
+  /* c8 ignore next 2 */
+  throw new Error('resilientFetch: retry loop terminated unexpectedly');
+}
@@ -0,0 +1,105 @@
+/**
+ * Bounded retry helper with full-jitter exponential backoff.
+ *
+ * Runtime-agnostic: depends only on `setTimeout`, `Math.random`, and the
+ * Promise machinery — no Node-only imports. Safe to consume from CLI,
+ * server, or browser callers.
+ *
+ * Pattern reference: gitnexus/src/core/embeddings/http-client.ts. This
+ * helper is the upgraded form: classification is caller-supplied (so
+ * 4xx-vs-5xx-vs-timeout decisions live with the protocol that knows
+ * them), backoff is exponential with full jitter, and an optional
+ * `afterMs` lets callers honor `Retry-After` headers.
+ */
+
+export interface RetryOptions {
+  /** Initial delay before the first retry attempt, in milliseconds. */
+  baseDelayMs: number;
+  /** Upper bound on any single delay, in milliseconds. */
+  capDelayMs: number;
+  /** Total attempts including the first call. Must be >= 1. */
+  maxAttempts: number;
+  /**
+   * Decide whether to retry after a thrown error.
+   * Return `{retry:false}` to terminate immediately and rethrow.
+   * Return `{retry:true}` to retry with exponential-backoff jitter.
+   * Return `{retry:true, afterMs}` to wait at least `afterMs` (still
+   * subject to `capDelayMs`) — used by callers parsing `Retry-After`.
+   */
+  isRetryable: (err: unknown, attempt: number) => RetryDecision;
+  /** Sleep override — defaults to `setTimeout`. Tests inject fake timers. */
+  sleep?: (ms: number) => Promise<void>;
+  /** Random override — defaults to `Math.random`. Tests inject seeded values. */
+  random?: () => number;
+}
+
+export type RetryDecision = { retry: false } | { retry: true; afterMs?: number };
+
+const defaultSleep = (ms: number): Promise<void> =>
+  new Promise((resolve) => setTimeout(resolve, ms));
+
+/**
+ * Compute the delay before the next retry attempt.
+ *
+ * - When the caller specifies `afterMs` (e.g., from `Retry-After`), use
+ *   `min(afterMs, capDelayMs)` so a misbehaving server can't pin the
+ *   client for an arbitrarily long wait.
+ * - Otherwise compute full-jitter exponential backoff:
+ *   `random() * min(cap, base * 2^attempt)`. Full jitter (rather than
+ *   "equal jitter") avoids retry-storm thundering herd, per AWS
+ *   guidance on backoff strategies.
+ */
+export function computeBackoffMs(
+  attempt: number,
+  baseDelayMs: number,
+  capDelayMs: number,
+  afterMs: number | undefined,
+  random: () => number,
+): number {
+  if (afterMs !== undefined) {
+    return Math.min(Math.max(0, afterMs), capDelayMs);
+  }
+  const exponential = baseDelayMs * Math.pow(2, attempt);
+  const upper = Math.min(capDelayMs, exponential);
+  return Math.floor(random() * upper);
+}
+
+/**
+ * Execute `fn` with bounded retries.
+ *
+ * The classification of "retryable" is the caller's responsibility — see
+ * `resilient-fetch.ts` for the GitHub-dispatch-specific rules. This
+ * helper is the mechanical retry loop only.
+ */
+export async function withRetry<T>(
+  fn: (attempt: number) => Promise<T>,
+  opts: RetryOptions,
+): Promise<T> {
+  if (opts.maxAttempts < 1) {
+    throw new Error(`withRetry: maxAttempts must be >= 1, got ${opts.maxAttempts}`);
+  }
+  const sleep = opts.sleep ?? defaultSleep;
+  const random = opts.random ?? Math.random;
+
+  let lastError: unknown;
+  for (let attempt = 0; attempt < opts.maxAttempts; attempt++) {
+    try {
+      return await fn(attempt);
+    } catch (err) {
+      lastError = err;
+      const decision = opts.isRetryable(err, attempt);
+      if (!decision.retry) throw err;
+      // Don't sleep after the final attempt.
+      if (attempt + 1 >= opts.maxAttempts) break;
+      const delayMs = computeBackoffMs(
+        attempt,
+        opts.baseDelayMs,
+        opts.capDelayMs,
+        decision.afterMs,
+        random,
+      );
+      if (delayMs > 0) await sleep(delayMs);
+    }
+  }
+  throw lastError;
+}
@@ -0,0 +1,151 @@
+/**
+ * Understand-Quickly registry integration helpers.
+ *
+ * Pure, runtime-agnostic logic for opting in to publishing a GitNexus
+ * index to the [`looptech-ai/understand-quickly`](https://github.com/looptech-ai/understand-quickly)
+ * registry. Lives in `gitnexus-shared` so both the Node CLI and any
+ * future browser-side surface can construct identical dispatch payloads.
+ *
+ * Network I/O lives in the CLI command (`gitnexus/src/cli/publish.ts`)
+ * to keep this module free of Node-only imports — see the comment at
+ * the top of `gitnexus-shared/src/graph/types.ts`.
+ *
+ * The protocol contract (single dispatch event, no graph upload) is
+ * documented at:
+ *   https://github.com/looptech-ai/understand-quickly/blob/main/docs/integrations/protocol.md
+ */
+
+/**
+ * URL of the registry repo's repository_dispatch endpoint. Hardcoded
+ * because the registry is the canonical home for this integration —
+ * users who want a private registry can fork and patch.
+ */
+export const UNDERSTAND_QUICKLY_DISPATCH_URL =
+  'https://api.github.com/repos/looptech-ai/understand-quickly/dispatches';
+
+/**
+ * Event type the registry's sync workflow listens for.
+ * See `looptech-ai/understand-quickly/.github/workflows/sync.yml`.
+ */
+export const UNDERSTAND_QUICKLY_EVENT_TYPE = 'sync-entry';
+
+/** Environment variable that gates the dispatch. */
+export const UNDERSTAND_QUICKLY_TOKEN_ENV = 'UNDERSTAND_QUICKLY_TOKEN';
+
+export interface UqDispatchPayload {
+  event_type: typeof UNDERSTAND_QUICKLY_EVENT_TYPE;
+  client_payload: {
+    /** `<owner>/<repo>` shape — must match the registered entry. */
+    id: string;
+  };
+}
+
+/**
+ * Build the JSON body for the `repository_dispatch` ping. Pure — no
+ * env reads, no network. Validates that `id` looks like `owner/repo`
+ * (one slash, no whitespace, both halves non-empty) so a misconfigured
+ * caller fails loudly before the round-trip.
+ */
+export function buildUqDispatchPayload(id: string): UqDispatchPayload {
+  if (!isValidOwnerRepo(id)) {
+    throw new Error(
+      `[understand-quickly] expected id of the form "owner/repo", got "${id}". ` +
+        `The registry uses this string to look up your entry in registry.json — ` +
+        `it must match the GitHub owner/repo of the source code, not a local path.`,
+    );
+  }
+  return {
+    event_type: UNDERSTAND_QUICKLY_EVENT_TYPE,
+    client_payload: { id },
+  };
+}
+
+/**
+ * `owner/repo` validation. Conservative on purpose: GitHub's actual
+ * naming rules are looser, but we want to catch local paths
+ * (`/Users/...`), bare slugs (`my-repo`), and accidental whitespace.
+ *
+ * Matches GitHub's published slug rules:
+ *   owner: starts with alnum, then alnum/hyphen only, must end with
+ *          alnum (no trailing hyphen — GitHub rejects this at account
+ *          creation, so a `my-org-/repo` input would otherwise pass us
+ *          and 422 from GitHub). No underscore, no dot. Length cap 39.
+ *   repo:  any of alnum/dot/hyphen/underscore. Length cap 100.
+ */
+export function isValidOwnerRepo(id: string): boolean {
+  return /^[A-Za-z0-9](?:[A-Za-z0-9-]{0,37}[A-Za-z0-9])?\/[A-Za-z0-9._-]{1,100}$/.test(id);
+}
+
+/**
+ * Strip a single trailing `.git` (case-insensitive) and any trailing
+ * slashes from a URL-ish string. Bounded linear: each character is
+ * visited at most twice, no backtracking.
+ *
+ * Replaces `s.replace(/\.git\/*$/i, '').replace(/\/+$/, '')` which
+ * CodeQL's polynomial-regex check (codeql/js/polynomial-redos) flags as
+ * a worst-case O(n²) on adversarial input like "////.../x".
+ */
+export function stripGitSuffix(input: string): string {
+  let end = input.length;
+  // Trim trailing '/'.
+  while (end > 0 && input.charCodeAt(end - 1) === 0x2f) end--;
+  // Drop one trailing '.git' (case-insensitive).
+  if (end >= 4) {
+    const tail = input.slice(end - 4, end).toLowerCase();
+    if (tail === '.git') end -= 4;
+  }
+  // Trim trailing '/' that may have sat between '.git' and the rest.
+  while (end > 0 && input.charCodeAt(end - 1) === 0x2f) end--;
+  return input.slice(0, end);
+}
+
+/**
+ * Parse `owner/repo` out of a git remote URL. Mirrors the heuristic in
+ * `gitnexus/src/storage/git.ts:parseRepoNameFromUrl` but keeps both
+ * halves so we can build a registry id. Returns `null` on shapes we
+ * don't recognise.
+ *
+ * Examples:
+ *   git@github.com:looptech-ai/understand-quickly.git
+ *   https://github.com/looptech-ai/understand-quickly
+ *   ssh://git@github.com/looptech-ai/understand-quickly.git
+ */
+export function parseOwnerRepoFromRemote(url: string | null | undefined): string | null {
+  if (!url) return null;
+  const trimmed = url.trim();
+  if (!trimmed) return null;
+  // Strip a trailing `.git` (case-insensitive) and any trailing slashes
+  // so https://h/o/r and https://h/o/r.git collapse to the same id.
+  // Bounded-linear helper avoids the polynomial-regex CodeQL alert.
+  const stripped = stripGitSuffix(trimmed);
+
+  // SCP-form SSH (`git@host:owner/repo`). Capture host so we can reject
+  // non-GitHub remotes — a GitLab origin like
+  // `https://gitlab.example.com/group/sub/project.git` would otherwise
+  // silently dispatch the wrong id (LOW 9).
+  const ssh = stripped.match(/^[^@]+@([^:]+):([^/]+)\/([^/]+)$/);
+  if (ssh) {
+    const host = ssh[1].toLowerCase();
+    if (host !== 'github.com' && host !== 'www.github.com') return null;
+    return `${ssh[2]}/${ssh[3]}`;
+  }
+
+  // URL forms (https://, ssh://, git://, file://) — last two path segments.
+  const url2 = stripped.match(/^[a-zA-Z][a-zA-Z0-9+.-]*:\/\/([^/]+)\/(.+)$/);
+  if (url2) {
+    // Strip optional `userinfo@` (e.g. `ssh://git@github.com/...`).
+    const authority = url2[1];
+    const atIdx = authority.lastIndexOf('@');
+    const hostAndPort = atIdx >= 0 ? authority.slice(atIdx + 1) : authority;
+    // Strip `:port` suffix if present.
+    const colonIdx = hostAndPort.indexOf(':');
+    const host = (colonIdx >= 0 ? hostAndPort.slice(0, colonIdx) : hostAndPort).toLowerCase();
+    if (host !== 'github.com' && host !== 'www.github.com') return null;
+    const segments = url2[2].split('/').filter(Boolean);
+    if (segments.length >= 2) {
+      const [owner, repo] = segments.slice(-2);
+      return `${owner}/${repo}`;
+    }
+  }
+  return null;
+}
@@ -26,9 +26,9 @@
 * (`resolveImportTarget`, `expandsWildcardTo`, `mergeBindings`) that
 * match the LanguageProvider surface from #911.
 *
- * **Dynamic imports rule.** `kind === 'dynamic-unresolved'` passes through
- * as an `ImportEdge { kind: 'dynamic-unresolved', targetFile: null }`
- * with no `BindingRef`. They are parse-time signals, not linkable targets.
+ * **Non-binding imports rule.** `dynamic-unresolved` passes through with
+ * `targetFile: null`; `dynamic-resolved` and `side-effect` resolve to
+ * file-level `ImportEdge`s. None of these materialize `BindingRef`s.
 */

 import type { SymbolDefinition } from './symbol-definition.js';
@@ -45,20 +45,28 @@ export interface FinalizeFile {
  /**
   * Defs exported from this file — the "what other files can import by name"
   * surface. Typically those with `isExported: true` (the module's own
-   * declarations) plus, for multi-hop re-export chains, the re-exported
-   * names the parser chose to surface here.
+   * declarations); parsers MAY also surface re-exported names here as a
+   * shortcut, but it is no longer required for correctness.
   *
   * **Multi-hop re-export contract.** `finalize` resolves an edge
-   * `A → B (importedName: 'X')` by looking up `X` in `B.localDefs`. If B
-   * only has `export { X } from './C'` and the parser *does not* include
-   * `X` in `B.localDefs`, A's edge hits the fixpoint cap and is marked
-   * `linkStatus: 'unresolved'`. The fixpoint does NOT mutate `localDefs`
-   * across iterations — it is static input.
+   * `A → B (importedName: 'X')` by first looking up `X` in `B.localDefs`.
+   * If `B` only has `export { X } from './C'` and does NOT surface `X` in
+   * its own `localDefs`, `finalize` falls back to the precomputed
+   * per-file re-export closure (`buildReexportClosures`), which encodes
+   * every name reachable through `B`'s named and wildcard re-exports —
+   * including transitively through cyclic SCCs. The lookup is O(1) and
+   * inherits the upstream `targetDefId`, populating `transitiveVia` with
+   * the file paths traversed to reach the leaf def.
   *
-   * Parsers that want multi-hop re-export chains to settle end-to-end must
-   * include re-exported names in the intermediate file's `localDefs` (with
-   * the original `DefId` of the source symbol). This keeps the algorithm
-   * O(1) per lookup and avoids graph-crawl during finalize.
+   * Surfacing re-exported names in `localDefs` is still a valid (and
+   * slightly cheaper) optimization: the direct lookup short-circuits the
+   * closure consult. Parsers SHOULD prefer surfacing names they can resolve
+   * statically (e.g., `export { X } from './c'` when `c.ts` is parsed in
+   * the same workspace), and rely on the closure for the long tail of
+   * barrel patterns.
+   *
+   * The fixpoint does NOT mutate `localDefs` across iterations — it is
+   * static input.
   */
  readonly localDefs: readonly SymbolDefinition[];
 }
@@ -85,7 +93,7 @@ export interface FinalizeHooks {
    targetRaw: string,
    fromFile: string,
    workspaceIndex: WorkspaceIndex,
-  ): string | null;
+  ): string | readonly string[] | null;

  /**
   * For a wildcard `import * from M`, return the names visible in the
@@ -119,20 +127,22 @@ export interface FinalizedScc {
 /**
 * Counters reported by `finalize`.
 *
- * **Counting granularity** — all edge counters are **per-`ParsedImport`**,
- * not per-materialized-`ImportEdge`. A single `wildcard` ParsedImport that
- * expands to N exports counts as one linked edge in these stats; the
- * materialized output (`FinalizeOutput.imports`) will have N edges for
- * that input. `dynamic-unresolved` ParsedImports count as linked (they
- * pass through with no `linkStatus`), so `linkedEdges` ≠ "has a
+ * **Counting granularity** — `totalEdges` is **per-generated-`ImportEdgeDraft`**,
+ * which may exceed the number of `ParsedImport` records when
+ * `resolveImportTarget` returns a multi-file array (e.g. Go package-scoped
+ * imports fan out to every `.go` file in the target directory). A single
+ * `wildcard` ParsedImport that expands to N exports also counts as one
+ * linked edge here; the materialized output (`FinalizeOutput.imports`) will
+ * have N edges for that input. `dynamic-unresolved` ParsedImports count as
+ * linked (they pass through with no `linkStatus`), so `linkedEdges` ≠ "has a
 * BindingRef" — use the `bindings` map for that.
 *
- * In other words: `totalEdges === input.parsedImports.length` summed
+ * In other words: `totalEdges >= input.parsedImports.length` summed
 * across files, and `linkedEdges + unresolvedEdges === totalEdges`.
 */
 export interface FinalizeStats {
  readonly totalFiles: number;
-  /** Total `ParsedImport` records seen across all files. */
+  /** Total `ImportEdgeDraft` records generated (≥ ParsedImport count). */
  readonly totalEdges: number;
  /**
   * `ParsedImport`s whose finalized edge does NOT carry
@@ -171,9 +181,9 @@ export function finalize(input: FinalizeInput, hooks: FinalizeHooks): FinalizeOu
  for (const file of input.files) {
    const drafts: ImportEdgeDraft[] = [];
    for (const parsed of file.parsedImports) {
-      const draft = makeEdgeDraft(parsed, file, hooks, input.workspaceIndex);
-      drafts.push(draft);
-      totalEdges++;
+      const draftArray = makeEdgeDrafts(parsed, file, hooks, input.workspaceIndex);
+      drafts.push(...draftArray);
+      totalEdges += draftArray.length;
    }
    edgeIndex.set(file.filePath, drafts);
  }
@@ -186,7 +196,8 @@ export function finalize(input: FinalizeInput, hooks: FinalizeHooks): FinalizeOu
    graph.set(file.filePath, new Set());
  }
  for (const [fromFile, drafts] of edgeIndex) {
-    const edges = graph.get(fromFile)!;
+    const edges = graph.get(fromFile);
+    if (edges === undefined) continue;
    for (const d of drafts) {
      if (d.targetFile !== null && byFilePath.has(d.targetFile)) {
        edges.add(d.targetFile);
@@ -197,6 +208,12 @@ export function finalize(input: FinalizeInput, hooks: FinalizeHooks): FinalizeOu
  // ── Phase 2: Tarjan SCC → reverse-topological list of SCCs.
  const sccs = tarjanSccs(graph);

+  // ── Phase 2.5: precompute the per-file re-export closure (iterative,
+  // SCC-condensed). Eliminates the recursive crawl that the per-edge
+  // `tryFinalize` call site used to do; lookups are O(1) afterwards.
+  // See `buildReexportClosures` for the algorithm.
+  const reexportClosures = buildReexportClosures(input.files, byFilePath, edgeIndex);
+
  // ── Phase 3: process SCCs in reverse-topological order (leaves first).
  // Within each SCC, run a bounded fixpoint that resolves intra-SCC edges.
  // Edges leaving the SCC are already resolved (their target SCC is
@@ -217,10 +234,11 @@ export function finalize(input: FinalizeInput, hooks: FinalizeHooks): FinalizeOu
      progressed = false;
      iterations++;
      for (const filePath of scc.files) {
-        const drafts = edgeIndex.get(filePath)!;
+        const drafts = edgeIndex.get(filePath);
+        if (drafts === undefined) continue;
        for (const draft of drafts) {
          if (draft.finalized !== null) continue;
-          const finalized = tryFinalize(draft, byFilePath);
+          const finalized = tryFinalize(draft, byFilePath, reexportClosures);
          if (finalized !== null) {
            draft.finalized = finalized;
            progressed = true;
@@ -231,7 +249,8 @@ export function finalize(input: FinalizeInput, hooks: FinalizeHooks): FinalizeOu

    // Any drafts still not finalized within this SCC hit the cap → unresolved.
    for (const filePath of scc.files) {
-      const drafts = edgeIndex.get(filePath)!;
+      const drafts = edgeIndex.get(filePath);
+      if (drafts === undefined) continue;
      for (const draft of drafts) {
        if (draft.finalized !== null) continue;
        draft.finalized = {
@@ -245,10 +264,14 @@ export function finalize(input: FinalizeInput, hooks: FinalizeHooks): FinalizeOu
  // ── Phase 4: collect finalized `ImportEdge[]` per module scope, preserving
  // input order within each file, and wildcard-expand where applicable.
  for (const file of input.files) {
-    const drafts = edgeIndex.get(file.filePath)!;
+    const drafts = edgeIndex.get(file.filePath);
+    if (drafts === undefined) continue;
    const finalized: ImportEdge[] = [];
    for (const d of drafts) {
-      const edge = d.finalized!;
+      const edge = d.finalized;
+      if (edge === null) {
+        throw new Error(`Invariant violated: import edge was not finalized for ${file.filePath}`);
+      }
      if (d.source.kind === 'wildcard' && edge.linkStatus !== 'unresolved') {
        // Produce one `wildcard-expanded` ImportEdge per exported name.
        const expanded = expandWildcard(edge, byFilePath, hooks, input.workspaceIndex);
@@ -299,12 +322,12 @@ interface ImportEdgeDraft {
  finalized: ImportEdge | null;
 }

-function makeEdgeDraft(
+function makeEdgeDrafts(
  parsed: ParsedImport,
  file: FinalizeFile,
  hooks: FinalizeHooks,
  workspace: WorkspaceIndex,
-): ImportEdgeDraft {
+): ImportEdgeDraft[] {
  // Dynamic-unresolved passes through — no `BindingRef`, no target file.
  if (parsed.kind === 'dynamic-unresolved') {
    const base: ImportEdge = {
@@ -313,59 +336,80 @@ function makeEdgeDraft(
      targetExportedName: '',
      kind: 'dynamic-unresolved',
    };
-    return {
-      source: parsed,
-      fromFile: file.filePath,
-      fromScope: file.moduleScope,
-      targetFile: null,
-      base,
-      finalized: base, // already fully finalized
-    };
+    return [
+      {
+        source: parsed,
+        fromFile: file.filePath,
+        fromScope: file.moduleScope,
+        targetFile: null,
+        base,
+        finalized: base, // already fully finalized
+      },
+    ];
  }

  const targetFile = hooks.resolveImportTarget(parsed.targetRaw ?? '', file.filePath, workspace);

  // Edge is unresolvable at the file level — mark unresolved now.
  if (targetFile === null) {
-    const edgeKind = parsed.kind === 'wildcard' ? 'wildcard-expanded' : parsed.kind;
-    const localName = parsed.kind === 'wildcard' ? '' : parsed.localName;
-    const targetExportedName = extractExportedName(parsed);
    const base: ImportEdge = {
-      localName,
+      localName: extractLocalName(parsed),
      targetFile: null,
-      targetExportedName,
-      kind: edgeKind,
+      targetExportedName: extractExportedName(parsed),
+      kind: edgeKindFor(parsed),
      linkStatus: 'unresolved',
    };
+    return [
+      {
+        source: parsed,
+        fromFile: file.filePath,
+        fromScope: file.moduleScope,
+        targetFile: null,
+        base,
+        finalized: base,
+      },
+    ];
+  }
+
+  // Resolvable at the file level; intra-SCC fixpoint may still fail to fill
+  // in `targetDefId` (e.g., symbol not exported from target). Side-effect
+  // and resolved-dynamic imports are terminal at the file level — no
+  // `targetDefId` needed since they materialize no `BindingRef`. Pre-
+  // finalize them here so the fixpoint loop skips them entirely.
+  const targetFiles = Array.isArray(targetFile) ? targetFile : [targetFile];
+  const isFileLevelTerminal = parsed.kind === 'side-effect' || parsed.kind === 'dynamic-resolved';
+  return targetFiles.map((tf) => {
+    const base: ImportEdge = {
+      localName: extractLocalName(parsed),
+      targetFile: tf,
+      targetExportedName: extractExportedName(parsed),
+      kind: edgeKindFor(parsed),
+    };
    return {
      source: parsed,
      fromFile: file.filePath,
      fromScope: file.moduleScope,
-      targetFile: null,
+      targetFile: tf,
      base,
-      finalized: base,
+      finalized: isFileLevelTerminal ? base : null,
    };
-  }
+  });
+}

-  // Resolvable at the file level; intra-SCC fixpoint may still fail to fill
-  // in `targetDefId` (e.g., symbol not exported from target).
-  const edgeKind = parsed.kind === 'wildcard' ? 'wildcard-expanded' : parsed.kind;
-  const localName = parsed.kind === 'wildcard' ? '' : parsed.localName;
-  const targetExportedName = extractExportedName(parsed);
-  const base: ImportEdge = {
-    localName,
-    targetFile,
-    targetExportedName,
-    kind: edgeKind,
-  };
-  return {
-    source: parsed,
-    fromFile: file.filePath,
-    fromScope: file.moduleScope,
-    targetFile,
-    base,
-    finalized: null,
-  };
+function edgeKindFor(parsed: ParsedImport): ImportEdge['kind'] {
+  if (parsed.kind === 'wildcard') return 'wildcard-expanded';
+  return parsed.kind;
+}
+
+function extractLocalName(parsed: ParsedImport): string {
+  switch (parsed.kind) {
+    case 'wildcard':
+    case 'side-effect':
+    case 'dynamic-resolved':
+      return '';
+    default:
+      return parsed.localName;
+  }
 }

 function extractExportedName(parsed: ParsedImport): string {
@@ -377,6 +421,8 @@ function extractExportedName(parsed: ParsedImport): string {
      return parsed.importedName;
    case 'wildcard':
    case 'dynamic-unresolved':
+    case 'dynamic-resolved':
+    case 'side-effect':
      return '';
  }
 }
@@ -386,6 +432,7 @@ function extractExportedName(parsed: ParsedImport): string {
 function tryFinalize(
  draft: ImportEdgeDraft,
  byFilePath: Map<string, FinalizeFile>,
+  reexportClosures: ReadonlyMap<string, FileReexportClosure>,
 ): ImportEdge | null {
  const targetFile = draft.targetFile;
  if (targetFile === null) return draft.base; // already terminal
@@ -423,22 +470,265 @@ function tryFinalize(
  const importedName = extractExportedName(draft.source);
  const exported = findExportByName(targetModule.localDefs, importedName);

-  if (exported === undefined) {
+  if (exported !== undefined) {
+    const transitiveVia =
+      draft.source.kind === 'reexport' ? Object.freeze([targetFile]) : undefined;
+    return {
+      ...draft.base,
+      targetModuleScope: targetModule.moduleScope,
+      targetDefId: exported.nodeId,
+      ...(transitiveVia !== undefined ? { transitiveVia } : {}),
+    };
+  }
+
+  // Multi-hop re-export follow. Barrel modules like
+  //   // models.ts
+  //   export { User } from './base';
+  // emit no local def for `User`; the name surfaces only via their own
+  // `reexport` edge. The per-file re-export closure built in phase 2.5
+  // already encodes every name reachable through that file's named and
+  // wildcard re-exports — including transitively through cyclic SCCs —
+  // so the lookup is O(1) and never recurses.
+  const followed = lookupReexportedName(reexportClosures, targetFile, importedName);
+  if (followed === null) {
    // Target resolvable but the name isn't exported — keep trying in case a
    // re-export inside the target's SCC surfaces it in a later iteration.
    return null;
  }

-  const transitiveVia = draft.source.kind === 'reexport' ? Object.freeze([targetFile]) : undefined;
+  const viaFiles = [targetFile, ...followed.via];
+  const transitiveVia =
+    draft.source.kind === 'reexport' || viaFiles.length > 1 ? Object.freeze(viaFiles) : undefined;

  return {
    ...draft.base,
    targetModuleScope: targetModule.moduleScope,
-    targetDefId: exported.nodeId,
+    targetDefId: followed.def.nodeId,
    ...(transitiveVia !== undefined ? { transitiveVia } : {}),
  };
 }

+// ─── Internal: re-export closure (phase 2.5) ───────────────────────────────
+
+/**
+ * Per-file map of `name → terminal def + via path` — i.e. every name
+ * importable from this file via its named/wildcard re-export chain
+ * (excluding the file's own `localDefs`, which the caller checks first
+ * via `findExportByName`). `via` is the ordered list of intermediate
+ * files traversed to reach the def.
+ *
+ * Built once per finalize pass. Lookups are O(1).
+ */
+type ReexportClosureEntry = { readonly def: SymbolDefinition; readonly via: readonly string[] };
+type FileReexportClosure = ReadonlyMap<string, ReexportClosureEntry>;
+
+/**
+ * Build per-file re-export closures.
+ *
+ * **Algorithm.** Iterative SCC-condensed reverse-topological propagation,
+ * structurally identical to how `finalize` itself processes the file-
+ * level import graph. Replaces the legacy recursive
+ * `followReexportChain` crawl with a bounded, stack-safe pass:
+ *
+ *   1. **Sub-graph.** Build a directed graph whose edges are
+ *      `reexport` and `wildcard` drafts only (regular imports do not
+ *      contribute to the export surface, and `namespace`/
+ *      `reexport-namespace` are terminal — their target def lives in
+ *      `localDefs`).
+ *   2. **SCC condensation.** Run the same iterative `tarjanSccs` over
+ *      the sub-graph. Output is in reverse-topological order (leaves
+ *      first), so when we process an SCC every out-of-SCC neighbor
+ *      already has its closure populated.
+ *   3. **Per-SCC propagation.**
+ *        * Acyclic singleton: one pass — read neighbors' (already
+ *          fully populated) closures.
+ *        * Cyclic SCC (cycle ≥ 2 files, or self-loop): bounded
+ *          fixpoint inside the SCC, capped at `|SCC| + 1` iterations
+ *          (each iteration propagates names one hop further around
+ *          the cycle; first-wins precedence keeps the map monotone
+ *          so the fixpoint converges in at most |SCC| hops).
+ *
+ * **Precedence semantics — preserved from the recursive crawl.**
+ *   * Named re-exports take precedence over wildcards.
+ *   * Within each kind, declaration order wins (first match for a
+ *     given exported name is kept; later drafts skip).
+ *
+ * **Complexity.**
+ *   * Pre-pass: O(V + E_re) for SCC, plus O(|SCC| × Σ drafts) per cyclic
+ *     SCC. For tree-shaped barrel graphs (the common case) it
+ *     collapses to O(E_re) total.
+ *   * Per-edge lookup at finalize time: O(1).
+ *   * `transitiveVia` preserves the exact file path chain for diagnostics
+ *     and graph provenance. Building those arrays copies the inherited path,
+ *     which is O(depth²) in a pathological single-name barrel chain; practical
+ *     TypeScript barrel chains are shallow enough that we keep exact paths
+ *     instead of capping or summarizing them.
+ *   * Pathological deep chains that previously needed
+ *     `MAX_REEXPORT_DEPTH=100` to bound stack growth now resolve
+ *     in full and are bounded only by available memory — the
+ *     iterative formulation has no call-stack ceiling.
+ */
+function buildReexportClosures(
+  files: readonly FinalizeFile[],
+  byFilePath: ReadonlyMap<string, FinalizeFile>,
+  edgeIndex: ReadonlyMap<string, ImportEdgeDraft[]>,
+): ReadonlyMap<string, FileReexportClosure> {
+  const closures = new Map<string, Map<string, ReexportClosureEntry>>();
+  for (const file of files) closures.set(file.filePath, new Map());
+
+  // ── Step 1: build the re-export sub-graph (only resolvable
+  // reexport/wildcard targets contribute edges).
+  const subGraph = new Map<string, Set<string>>();
+  for (const file of files) {
+    const targets = new Set<string>();
+    const drafts = edgeIndex.get(file.filePath);
+    if (drafts !== undefined) {
+      for (const d of drafts) {
+        if (d.source.kind !== 'reexport' && d.source.kind !== 'wildcard') continue;
+        if (d.targetFile === null) continue;
+        if (!byFilePath.has(d.targetFile)) continue;
+        targets.add(d.targetFile);
+      }
+    }
+    subGraph.set(file.filePath, targets);
+  }
+
+  // ── Step 2: SCC over the sub-graph. Reuses the same iterative Tarjan
+  // implementation that drives the file-level finalize loop, so any
+  // call-stack-safety guarantees there transfer here unchanged.
+  const subSccs = tarjanSccs(subGraph);
+
+  // ── Step 3: process SCCs in reverse-topological order. Acyclic
+  // singletons settle in one pass; cyclic SCCs run a bounded fixpoint.
+  for (const scc of subSccs) {
+    if (!scc.isCycle) {
+      const filePath = scc.files[0];
+      if (filePath !== undefined) {
+        populateFileClosure(filePath, byFilePath, edgeIndex, closures);
+      }
+      continue;
+    }
+    // Cap = |SCC| + 1. With first-wins precedence each name needs at
+    // most |SCC| iterations to propagate fully around the cycle; the
+    // extra iteration confirms no progress and breaks the loop.
+    const cap = scc.files.length + 1;
+    let progressed = true;
+    let iter = 0;
+    while (progressed && iter < cap) {
+      progressed = false;
+      iter++;
+      for (const filePath of scc.files) {
+        if (populateFileClosure(filePath, byFilePath, edgeIndex, closures)) {
+          progressed = true;
+        }
+      }
+    }
+  }
+
+  return closures;
+}
+
+/**
+ * Populate one file's re-export closure for one pass. Returns `true`
+ * iff the closure grew (signalling fixpoint progress to the caller).
+ *
+ * Walks the file's drafts in declaration order, named re-exports first
+ * (precedence), then wildcards. For each draft, attempts:
+ *   1. **Direct hit** — name exists in the target file's `localDefs`.
+ *   2. **Inherited** — name exists in the target file's already-populated
+ *      closure (which encodes the target's own re-export chain).
+ *
+ * `closures.get(targetFile)` may itself still be empty for in-SCC
+ * targets on the first iteration; the outer fixpoint loop handles
+ * that by re-invoking this function.
+ */
+function populateFileClosure(
+  filePath: string,
+  byFilePath: ReadonlyMap<string, FinalizeFile>,
+  edgeIndex: ReadonlyMap<string, ImportEdgeDraft[]>,
+  closures: Map<string, Map<string, ReexportClosureEntry>>,
+): boolean {
+  const myClosure = closures.get(filePath);
+  if (myClosure === undefined) return false;
+  const before = myClosure.size;
+  const drafts = edgeIndex.get(filePath);
+  if (drafts === undefined) return false;
+
+  // Named re-exports — precedence over wildcards, declaration order
+  // first-wins for duplicates of the same exported name.
+  for (const draft of drafts) {
+    if (draft.source.kind !== 'reexport') continue;
+    const targetFile = draft.targetFile;
+    if (targetFile === null) continue;
+    const targetModule = byFilePath.get(targetFile);
+    if (targetModule === undefined) continue;
+
+    const localName = draft.source.localName;
+    if (myClosure.has(localName)) continue;
+
+    const importedName = draft.source.importedName;
+    const direct = findExportByName(targetModule.localDefs, importedName);
+    if (direct !== undefined) {
+      myClosure.set(localName, { def: direct, via: Object.freeze([targetFile]) });
+      continue;
+    }
+    const inherited = closures.get(targetFile)?.get(importedName);
+    if (inherited !== undefined) {
+      myClosure.set(localName, {
+        def: inherited.def,
+        via: Object.freeze([targetFile, ...inherited.via]),
+      });
+    }
+    // Else: target's closure is still empty (in-SCC, awaiting next
+    // iteration). Outer loop will revisit.
+  }
+
+  // Wildcard re-exports — fan out the target's own surface (localDefs
+  // + transitive closure). `myClosure.has(name)` checks below preserve
+  // the named-precedence and first-wins semantics from above.
+  for (const draft of drafts) {
+    if (draft.source.kind !== 'wildcard') continue;
+    const targetFile = draft.targetFile;
+    if (targetFile === null) continue;
+    const targetModule = byFilePath.get(targetFile);
+    if (targetModule === undefined) continue;
+
+    for (const def of targetModule.localDefs) {
+      const name = deriveSimpleName(def);
+      if (name === null || myClosure.has(name)) continue;
+      myClosure.set(name, { def, via: Object.freeze([targetFile]) });
+    }
+    const targetClosure = closures.get(targetFile);
+    if (targetClosure !== undefined) {
+      for (const [name, entry] of targetClosure) {
+        if (myClosure.has(name)) continue;
+        myClosure.set(name, {
+          def: entry.def,
+          via: Object.freeze([targetFile, ...entry.via]),
+        });
+      }
+    }
+  }
+
+  return myClosure.size > before;
+}
+
+/**
+ * O(1) lookup into a precomputed re-export closure. Replaces the legacy
+ * recursive `followReexportChain` traversal with a single map indexing.
+ */
+function lookupReexportedName(
+  closures: ReadonlyMap<string, FileReexportClosure>,
+  filePath: string,
+  name: string,
+): { def: SymbolDefinition; via: readonly string[] } | null {
+  const closure = closures.get(filePath);
+  if (closure === undefined) return null;
+  const entry = closure.get(name);
+  if (entry === undefined) return null;
+  return { def: entry.def, via: entry.via };
+}
+
 /**
 * The "simple" (unqualified) name of a def, for import-name matching.
 *
@@ -459,10 +749,58 @@ function findExportByName(
  defs: readonly SymbolDefinition[],
  name: string,
 ): SymbolDefinition | undefined {
+  // GENERIC RULE (applies to every language using this finalize
+  // algorithm): when MULTIPLE `SymbolDefinition`s share the same simple
+  // name in `localDefs`, prefer callable / type-like defs over plain
+  // value defs (`Variable`, `Property`, …). The CALLER side of an
+  // import almost always wants the callable, not a value shadow that
+  // happens to share the name — and without a deterministic
+  // preference, capture order silently decides which def the import
+  // binds to.
+  //
+  // The single-def case is unchanged: when only one def has the name,
+  // it's returned regardless of its type (the `fallback` path below).
+  //
+  // TypeScript is the first known language where this matters in
+  // practice: `const fn = () => {}` emits BOTH a `Function` def (from
+  // `@declaration.function` on the inner arrow) AND a `Variable` def
+  // (from the generic `@declaration.variable` pattern matching the
+  // wrapping `lexical_declaration`), and consumers of `import { fn }`
+  // need to bind to the callable. Other migrated languages don't
+  // currently produce dual emits of this shape, so the rule is a no-op
+  // for them today; future languages get the same correctness
+  // guarantee for free if they ever do.
+  //
+  // See `gitnexus/test/integration/resolvers/typescript-hof-callbacks.test.ts`
+  // for the cross-file regression this rule prevents.
+  let fallback: SymbolDefinition | undefined;
  for (const d of defs) {
-    if (deriveSimpleName(d) === name) return d;
+    if (deriveSimpleName(d) !== name) continue;
+    if (isCallableOrTypeLike(d.type)) return d;
+    if (fallback === undefined) fallback = d;
  }
-  return undefined;
+  return fallback;
+}
+
+const CALLABLE_OR_TYPE_LIKE: ReadonlySet<string> = new Set([
+  'Function',
+  'Method',
+  'Constructor',
+  'Class',
+  'Interface',
+  'Enum',
+  'Struct',
+  'Record',
+  'Trait',
+  'Namespace',
+  'Module',
+  'TypeAlias',
+  'Type',
+  'Typedef',
+]);
+
+function isCallableOrTypeLike(type: string): boolean {
+  return CALLABLE_OR_TYPE_LIKE.has(type);
 }

 function countEdgesWithin(edgeIndex: Map<string, ImportEdgeDraft[]>, files: Set<string>): number {
@@ -522,6 +860,17 @@ function materializeBindings(
 ): ReadonlyMap<ScopeId, ReadonlyMap<string, readonly BindingRef[]>> {
  const out = new Map<ScopeId, ReadonlyMap<string, readonly BindingRef[]>>();

+  // Build a `nodeId → SymbolDefinition` index once across all files
+  // (O(N_files × D_defs)) so the per-edge lookup below is O(1) instead
+  // of a full linear scan. At realistic TypeScript monorepo scale
+  // (~5k files × ~50 defs × ~100k linked import edges) this is the
+  // difference between ~25 s and a few ms inside finalize. The map
+  // is local to this pass — no cross-pass state leaks.
+  const defById = new Map<string, SymbolDefinition>();
+  for (const f of files) {
+    for (const d of f.localDefs) defById.set(d.nodeId, d);
+  }
+
  for (const file of files) {
    const scopeBindings = new Map<string, readonly BindingRef[]>();

@@ -538,10 +887,7 @@ function materializeBindings(
    const imports = linkedByScope.get(file.moduleScope) ?? [];
    for (const edge of imports) {
      if (edge.targetDefId === undefined || edge.linkStatus === 'unresolved') continue;
-      // Every def the importing file needs to reach is in some other file's
-      // `localDefs`; walk all files to find it. In practice we could index
-      // this, but at finalize-time N(files) is small per workspace pass.
-      const def = findDefById(files, edge.targetDefId);
+      const def = defById.get(edge.targetDefId);
      if (def === undefined) continue;

      const origin: BindingRef['origin'] =
@@ -571,15 +917,6 @@ function materializeBindings(
  return out;
 }

-function findDefById(files: readonly FinalizeFile[], defId: string): SymbolDefinition | undefined {
-  for (const f of files) {
-    for (const d of f.localDefs) {
-      if (d.nodeId === defId) return d;
-    }
-  }
-  return undefined;
-}
-
 // ─── Internal: Tarjan SCC ──────────────────────────────────────────────────

 /**
@@ -607,7 +944,8 @@ function tarjanSccs(graph: ReadonlyMap<string, ReadonlySet<string>>): FinalizedS
      entered: false,
    });
    while (iterStack.length > 0) {
-      const frame = iterStack[iterStack.length - 1]!;
+      const frame = iterStack[iterStack.length - 1];
+      if (frame === undefined) break;

      if (!frame.entered) {
        frame.entered = true;
@@ -625,7 +963,10 @@ function tarjanSccs(graph: ReadonlyMap<string, ReadonlySet<string>>): FinalizedS
          const scc: string[] = [];
          let selfInCycle = false;
          while (true) {
-            const w = stack.pop()!;
+            const w = stack.pop();
+            if (w === undefined) {
+              throw new Error(`Invariant violated: Tarjan stack exhausted at ${frame.node}`);
+            }
            onStack.delete(w);
            scc.push(w);
            // A single-file self-loop counts as a cycle.
@@ -640,8 +981,16 @@ function tarjanSccs(graph: ReadonlyMap<string, ReadonlySet<string>>): FinalizedS
        iterStack.pop();
        // Propagate lowlink to parent.
        if (iterStack.length > 0) {
-          const parent = iterStack[iterStack.length - 1]!;
-          lowlink.set(parent.node, Math.min(lowlink.get(parent.node)!, lowlink.get(frame.node)!));
+          const parent = iterStack[iterStack.length - 1];
+          if (parent !== undefined) {
+            lowlink.set(
+              parent.node,
+              Math.min(
+                requiredNumber(lowlink, parent.node, 'lowlink'),
+                requiredNumber(lowlink, frame.node, 'lowlink'),
+              ),
+            );
+          }
        }
        continue;
      }
@@ -654,10 +1003,24 @@ function tarjanSccs(graph: ReadonlyMap<string, ReadonlySet<string>>): FinalizedS
          entered: false,
        });
      } else if (onStack.has(child)) {
-        lowlink.set(frame.node, Math.min(lowlink.get(frame.node)!, index.get(child)!));
+        lowlink.set(
+          frame.node,
+          Math.min(
+            requiredNumber(lowlink, frame.node, 'lowlink'),
+            requiredNumber(index, child, 'index'),
+          ),
+        );
      }
    }
  }

  return sccs;
 }
+
+function requiredNumber(map: ReadonlyMap<string, number>, key: string, label: string): number {
+  const value = map.get(key);
+  if (value === undefined) {
+    throw new Error(`Invariant violated: missing Tarjan ${label} for ${key}`);
+  }
+  return value;
+}
@@ -119,10 +119,10 @@ export function buildScopeTree(scopes: readonly Scope[]): ScopeTree {
        `Scope '${scope.id}' (${scope.filePath}) has parent '${parent.id}' in a different file (${parent.filePath}). Parent/child scopes must share filePath.`,
      );
    }
-    if (!rangeStrictlyContains(parent.range, scope.range)) {
+    if (!canParentScope(parent.range, scope.range, parent.kind, scope.kind)) {
      throw new ScopeTreeInvariantError(
        'parent-must-contain-child',
-        `Parent scope '${parent.id}' at ${formatRange(parent.range)} does not strictly contain child '${scope.id}' at ${formatRange(scope.range)}.`,
+        `Parent scope '${parent.id}' at ${formatRange(parent.range)} does not contain child '${scope.id}' at ${formatRange(scope.range)} (allowed: strict containment, or equal-range Module-as-parent).`,
      );
    }

@@ -230,6 +230,47 @@ function rangeStrictlyContains(outer: Range, inner: Range): boolean {
  return outerStartsAtOrBefore && outerEndsAtOrAfter;
 }

+function rangesEqual(a: Range, b: Range): boolean {
+  return (
+    a.startLine === b.startLine &&
+    a.startCol === b.startCol &&
+    a.endLine === b.endLine &&
+    a.endCol === b.endCol
+  );
+}
+
+/**
+ * Whether `outer` (kind `outerKind`) is a valid parent for `inner` (kind
+ * `innerKind`).
+ *
+ * Strict containment is the general rule. The single carve-out is the
+ * `Module`/non-`Module` pair whose ranges are exactly equal — this happens
+ * naturally when tree-sitter reports identical byte spans for the
+ * `compilation_unit` (or equivalent file-root construct) and the file's
+ * single top-level scope. Common shape: a C# file consisting of nothing
+ * but `namespace X { ... }` with no leading or trailing trivia outside the
+ * namespace's `{}` body — `compilation_unit` and `namespace_declaration`
+ * both span exactly the same byte range. The `Module` is the universal
+ * outer of any file-level scope by language semantics, so coincident
+ * ranges should not break the parent chain.
+ *
+ * The carve-out is direction-asymmetric: only `Module`-as-outer parents a
+ * same-range non-`Module`, never the reverse. This preserves the
+ * acyclicity buildScopeTree relies on, and matches the corresponding
+ * helper in `scope-extractor.ts` so `pass1BuildScopes` and the validator
+ * agree on what a well-formed parent edge looks like.
+ */
+export function canParentScope(
+  outer: Range,
+  inner: Range,
+  outerKind: Scope['kind'],
+  innerKind: Scope['kind'],
+): boolean {
+  if (rangeStrictlyContains(outer, inner)) return true;
+  if (outerKind === 'Module' && innerKind !== 'Module' && rangesEqual(outer, inner)) return true;
+  return false;
+}
+
 /**
 * Two ranges overlap when neither finishes before the other begins. Ranges
 * that merely touch at a single boundary point (`a.end === b.start`) do
@@ -10,8 +10,16 @@
 * Lifecycle contract (RFC §2.8): scopes are **constructed during extraction,
 * linked during finalize, immutable after finalize**. All fields are
 * `readonly` at the type level; `Object.freeze` is applied at runtime in dev
- * builds. `ReferenceIndex` is the sole structure populated after freeze — by
- * resolution, before emission.
+ * builds.
+ *
+ * Two structures are populated after freeze:
+ *   1. `ReferenceIndex` — by resolution, before emission.
+ *   2. `ScopeResolutionIndexes.bindingAugmentations` — the dedicated
+ *      append-only post-finalize binding channel (e.g. C# same-namespace
+ *      cross-file fanout). The companion `indexes.bindings` is the
+ *      finalize-output channel and is deep-frozen by `materializeBindings`;
+ *      walkers consult both via `lookupBindingsAt`. See `ScopeResolver`
+ *      Invariant I8 for the full lifecycle contract.
 */

 import type { NodeLabel } from '../graph/types.js';
@@ -182,6 +190,42 @@ export type ParsedImport =
      readonly localName: string;
      /** Source text of the unresolved expression when available; `null` otherwise. */
      readonly targetRaw: string | null;
+    }
+  /**
+   * Lazy / dynamic import whose target IS a static string literal at parse
+   * time, so it can be linked to a concrete `targetFile`. No local name
+   * binding is materialized — `import('./m')` returns `Promise<Module>` and
+   * any consumer-visible names appear via subsequent `.then(({ X }) => …)`
+   * destructuring, which is outside the static-import surface. The edge
+   * exists for module-reachability and impact analysis (so editing `./m`
+   * still flags the dynamic importer as affected).
+   *
+   * Providers MUST only emit this kind when `targetRaw` is a literal
+   * string they can hand to `resolveImportTarget`; expression arguments
+   * stay `dynamic-unresolved`.
+   *
+   * Examples:
+   *   - JS `import('./feature')`                  → `{ kind: 'dynamic-resolved', targetRaw: './feature' }`
+   *   - JS `await import('@scope/pkg/sub')`       → `{ kind: 'dynamic-resolved', targetRaw: '@scope/pkg/sub' }`
+   */
+  | {
+      readonly kind: 'dynamic-resolved';
+      readonly targetRaw: string;
+    }
+  /**
+   * Bare-source / side-effect import that introduces no local name binding
+   * but still establishes a file-level dependency. Resolves to a concrete
+   * `targetFile` via `resolveImportTarget` and produces a file→file
+   * `ImportEdge` for module-reachability and impact analysis, with no
+   * `BindingRef` materialized.
+   *
+   * Examples:
+   *   - JS / TS `import './polyfill'`        → `{ kind: 'side-effect', targetRaw: './polyfill' }`
+   *   - Rust    `use foo::bar as _`          → side-effect (binding hidden under `_`)
+   */
+  | {
+      readonly kind: 'side-effect';
+      readonly targetRaw: string;
    };

 /**
@@ -253,7 +297,9 @@ export interface ImportEdge {
    | 'namespace'
    | 'wildcard-expanded'
    | 'reexport'
-    | 'dynamic-unresolved';
+    | 'dynamic-unresolved'
+    | 'dynamic-resolved'
+    | 'side-effect';
  /** Re-export chain, for provenance (e.g., `['./y']` when re-exported via `./y`). */
  readonly transitiveVia?: readonly string[];
  /** Set to `'unresolved'` when the SCC fixpoint could not link this edge. */
@@ -0,0 +1,13 @@
+/**
+ * Test-only helpers.
+ *
+ * Symbols here are reachable from `gitnexus-shared/test-helpers` so test
+ * suites can reset shared registries or exercise internal classifiers,
+ * but they are deliberately NOT re-exported from the main `gitnexus-shared`
+ * barrel. Production consumers should never import this module — calling
+ * `__resetBreakerRegistry__()` from a tool implementation would silently
+ * nuke every circuit breaker process-wide.
+ */
+
+export { __resetBreakerRegistry__ } from './integrations/circuit-breaker.js';
+export { classifyOutcome } from './integrations/resilient-fetch.js';
@@ -8,17 +8,17 @@
      "name": "gitnexus",
      "version": "0.0.0",
      "dependencies": {
-        "@langchain/anthropic": "^1.3.27",
-        "@langchain/core": "^1.1.41",
+        "@langchain/anthropic": "^1.3.29",
+        "@langchain/core": "^1.1.44",
        "@langchain/google-genai": "^2.1.28",
        "@langchain/langgraph": "^1.2.9",
        "@langchain/ollama": "^1.2.6",
-        "@langchain/openai": "^1.4.4",
+        "@langchain/openai": "^1.4.5",
        "@sigma/edge-curve": "^3.1.0",
        "@tailwindcss/vite": "^4.2.4",
-        "axios": "^1.13.2",
+        "axios": "^1.16.0",
        "d3": "^7.9.0",
-        "dompurify": "^3.3.3",
+        "dompurify": "^3.4.2",
        "gitnexus-shared": "file:../gitnexus-shared",
        "graphology": "^0.26.0",
        "graphology-indices": "^0.17.0",
@@ -26,21 +26,21 @@
        "graphology-layout-forceatlas2": "^0.10.1",
        "graphology-layout-noverlap": "^0.4.2",
        "graphology-utils": "^2.3.0",
-        "langchain": "^1.3.4",
+        "langchain": "^1.3.5",
        "lru-cache": "^11.2.4",
-        "lucide-react": "^1.11.0",
+        "lucide-react": "^1.14.0",
        "mermaid": "^11.14.0",
        "mnemonist": "^0.39.0",
        "pandemonium": "^2.4.0",
-        "react": "^18.3.1",
-        "react-dom": "^18.3.1",
+        "react": "^19.2.5",
+        "react-dom": "^19.2.6",
        "react-markdown": "^10.1.0",
        "react-syntax-highlighter": "^16.1.0",
-        "react-zoom-pan-pinch": "^3.7.0",
+        "react-zoom-pan-pinch": "^4.0.3",
        "remark-gfm": "^4.0.1",
        "sigma": "^3.0.2",
        "tailwindcss": "^4.2.4",
-        "uuid": "^13.0.0",
+        "uuid": "^14.0.0",
        "zod": "^3.25.76"
      },
      "devDependencies": {
@@ -49,15 +49,15 @@
        "@testing-library/jest-dom": "^6.9.1",
        "@testing-library/react": "^16.3.2",
        "@testing-library/user-event": "^14.6.1",
-        "@types/dompurify": "^3.0.5",
-        "@types/node": "^24.10.1",
-        "@types/react": "^18.3.5",
-        "@types/react-dom": "^18.3.0",
+        "@types/dompurify": "^3.2.0",
+        "@types/node": "^25.6.0",
+        "@types/react": "^19.2.14",
+        "@types/react-dom": "^19.2.3",
        "@types/react-syntax-highlighter": "^15.5.13",
        "@vercel/node": "^5.5.16",
        "@vitejs/plugin-react": "^5.1.4",
        "@vitest/coverage-v8": "^4.1.5",
-        "jsdom": "^29.0.2",
+        "jsdom": "^29.1.1",
        "tree-sitter-wasms": "^0.1.13",
        "typescript": "^5.4.5",
        "vite": "^8.0.10",
@@ -95,9 +95,9 @@
      }
    },
    "node_modules/@anthropic-ai/sdk": {
-      "version": "0.90.0",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.90.0.tgz",
-      "integrity": "sha512-MzZtPabJF1b0FTDl6Z6H5ljphPwACLGP13lu8MTiB8jXaW/YXlpOp+Po2cVou3MPM5+f5toyLnul9whKCy7fBg==",
+      "version": "0.91.1",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.91.1.tgz",
+      "integrity": "sha512-LAmu761tSN9r66ixvmciswUj/ZC+1Q4iAfpedTfSVLeswRwnY3n2Nb6Tsk+cLPP28aLOPWeMgIuTuCcMC6W/iw==",
      "license": "MIT",
      "dependencies": {
        "json-schema-to-ts": "^3.1.1"
@@ -132,9 +132,9 @@
      }
    },
    "node_modules/@asamuzakjp/dom-selector": {
-      "version": "7.0.10",
-      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-7.0.10.tgz",
-      "integrity": "sha512-KyOb19eytNSELkmdqzZZUXWCU25byIlOld5qVFg0RYdS0T3tt7jeDByxk9hIAC73frclD8GKrHttr0SUjKCCdQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-7.1.1.tgz",
+      "integrity": "sha512-67RZDnYRc8H/8MLDgQCDE//zoqVFwajkepHZgmXrbwybzXOEwOWGPYGmALYl9J2DOLfFPPs6kKCqmbzV895hTQ==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
@@ -685,9 +685,9 @@
      }
    },
    "node_modules/@csstools/css-syntax-patches-for-csstree": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.1.1.tgz",
-      "integrity": "sha512-BvqN0AMWNAnLk9G8jnUT77D+mUbY/H2b3uDTvg2isJkHaOufUE2R3AOwxWo7VBQKT1lOdwdvorddo2B/lk64+w==",
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.1.3.tgz",
+      "integrity": "sha512-SH60bMfrRCJF3morcdk57WklujF4Jr/EsQUzqkarfHXEFcAR1gg7fS/chAE922Sehgzc1/+Tz5H3Ypa1HiEKrg==",
      "dev": true,
      "funding": [
        {
@@ -1337,29 +1337,6 @@
        "mlly": "^1.8.0"
      }
    },
-    "node_modules/@isaacs/balanced-match": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/@isaacs/balanced-match/-/balanced-match-4.0.1.tgz",
-      "integrity": "sha512-yzMTt9lEb8Gv7zRioUilSglI0c0smZ9k5D65677DLWLtWJaXIS3CqcGyUFByYKlnUj6TkjLVs54fBl6+TiGQDQ==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": "20 || >=22"
-      }
-    },
-    "node_modules/@isaacs/brace-expansion": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/@isaacs/brace-expansion/-/brace-expansion-5.0.0.tgz",
-      "integrity": "sha512-ZT55BDLV0yv0RBm2czMiZ+SqCGO7AvmOM3G/w2xhVPH+te0aKgFjmBvGlL1dH+ql2tgGO3MVrbb3jCKyvpgnxA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@isaacs/balanced-match": "^4.0.1"
-      },
-      "engines": {
-        "node": "20 || >=22"
-      }
-    },
    "node_modules/@isaacs/fs-minipass": {
      "version": "4.0.1",
      "resolved": "https://registry.npmjs.org/@isaacs/fs-minipass/-/fs-minipass-4.0.1.tgz",
@@ -1419,25 +1396,25 @@
      }
    },
    "node_modules/@langchain/anthropic": {
-      "version": "1.3.27",
-      "resolved": "https://registry.npmjs.org/@langchain/anthropic/-/anthropic-1.3.27.tgz",
-      "integrity": "sha512-A0pWKIMIhgF01z3ILA8uAbZ6ZR2H8UQP2Ww8Ofq5DtHp36uJkQgrNCdS+q9pUVJJ87eq5dEdFkpjrjmH4fVkfQ==",
+      "version": "1.3.29",
+      "resolved": "https://registry.npmjs.org/@langchain/anthropic/-/anthropic-1.3.29.tgz",
+      "integrity": "sha512-ep1qBIcV07bajsg3fDqMd39rYwoRLOEK/6lk+MCxlm1YB5SRoKKJAZANrblQ/4RYhZJnxf95c6BSQu8VoNbVAQ==",
      "license": "MIT",
      "dependencies": {
-        "@anthropic-ai/sdk": "^0.90.0",
+        "@anthropic-ai/sdk": "^0.91.1",
        "zod": "^3.25.76 || ^4"
      },
      "engines": {
        "node": ">=20"
      },
      "peerDependencies": {
-        "@langchain/core": "^1.1.41"
+        "@langchain/core": "^1.1.45"
      }
    },
    "node_modules/@langchain/core": {
-      "version": "1.1.41",
-      "resolved": "https://registry.npmjs.org/@langchain/core/-/core-1.1.41.tgz",
-      "integrity": "sha512-KdoNEf1YVJ9jnOP+smq4O6teu63tE7GDUryOnZ2lVfooHLrHK/ECUadjOcDSCK/yk/xBw/8nexJ3ZNBMtKnstw==",
+      "version": "1.1.45",
+      "resolved": "https://registry.npmjs.org/@langchain/core/-/core-1.1.45.tgz",
+      "integrity": "sha512-Y/wvuglLTMKJahkl4QD9dBIdF/z/CxZJWdTfHJF/q2jtlJtoFf6Mb5JpGxZfsi3mBY6NSG941FSLTcqhCKrhBA==",
      "license": "MIT",
      "dependencies": {
        "@cfworker/json-schema": "^4.0.2",
@@ -1449,26 +1426,12 @@
        "langsmith": ">=0.5.0 <1.0.0",
        "mustache": "^4.2.0",
        "p-queue": "^6.6.2",
-        "uuid": "^11.1.0",
        "zod": "^3.25.76 || ^4"
      },
      "engines": {
        "node": ">=20"
      }
    },
-    "node_modules/@langchain/core/node_modules/uuid": {
-      "version": "11.1.0",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-11.1.0.tgz",
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-      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.2.tgz",
+      "integrity": "sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA==",
      "dev": true,
      "license": "MIT",
      "engines": {
@@ -7140,21 +7085,44 @@
      }
    },
    "node_modules/minimatch": {
-      "version": "10.1.1",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.1.1.tgz",
-      "integrity": "sha512-enIvLvRAFZYXJzkCYG5RKmPfrFArdLv+R+lbQ53BmIMLIry74bjKzX6iHAm8WYamJkhSSEabrWN5D97XnKObjQ==",
+      "version": "10.2.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.5.tgz",
+      "integrity": "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg==",
      "dev": true,
      "license": "BlueOak-1.0.0",
      "dependencies": {
-        "@isaacs/brace-expansion": "^5.0.0"
+        "brace-expansion": "^5.0.5"
      },
      "engines": {
-        "node": "20 || >=22"
+        "node": "18 || 20 || >=22"
      },
      "funding": {
        "url": "https://github.com/sponsors/isaacs"
      }
    },
+    "node_modules/minimatch/node_modules/balanced-match": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
+      "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/minimatch/node_modules/brace-expansion": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
+      "integrity": "sha512-VZznLgtwhn+Mact9tfiwx64fA9erHH/MCXEUfB/0bX/6Fz6ny5EGTXYltMocqg4xFAQZtnO3DHWWXi8RiuN7cQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
    "node_modules/minimist": {
      "version": "1.2.8",
      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
@@ -7471,13 +7439,13 @@
      }
    },
    "node_modules/parse5": {
-      "version": "8.0.0",
-      "resolved": "https://registry.npmjs.org/parse5/-/parse5-8.0.0.tgz",
-      "integrity": "sha512-9m4m5GSgXjL4AjumKzq1Fgfp3Z8rsvjRNbnkVwfu2ImRqE5D0LnY2QfDen18FSY9C573YU5XxSapdHZTZ2WolA==",
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-8.0.1.tgz",
+      "integrity": "sha512-z1e/HMG90obSGeidlli3hj7cbocou0/wa5HacvI3ASx34PecNjNQeaHNo5WIZpWofN9kgkqV1q5YvXe3F0FoPw==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
-        "entities": "^6.0.0"
+        "entities": "^8.0.0"
      },
      "funding": {
        "url": "https://github.com/inikulin/parse5?sponsor=1"
@@ -7746,28 +7714,24 @@
      "license": "MIT"
    },
    "node_modules/react": {
-      "version": "18.3.1",
-      "resolved": "https://registry.npmjs.org/react/-/react-18.3.1.tgz",
-      "integrity": "sha512-wS+hAgJShR0KhEvPJArfuPVN1+Hz1t0Y6n5jLrGQbkb4urgPE/0Rve+1kMB1v/oWgHgm4WIcV+i7F2pTVj+2iQ==",
+      "version": "19.2.6",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.2.6.tgz",
+      "integrity": "sha512-sfWGGfavi0xr8Pg0sVsyHMAOziVYKgPLNrS7ig+ivMNb3wbCBw3KxtflsGBAwD3gYQlE/AEZsTLgToRrSCjb0Q==",
      "license": "MIT",
-      "dependencies": {
-        "loose-envify": "^1.1.0"
-      },
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/react-dom": {
-      "version": "18.3.1",
-      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.3.1.tgz",
-      "integrity": "sha512-5m4nQKp+rZRb09LNH59GM4BxTh9251/ylbKIbpe7TpGxfJ+9kv6BLkLBXIjjspbgbnIBNqlI23tRnTWT0snUIw==",
+      "version": "19.2.6",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.6.tgz",
+      "integrity": "sha512-0prMI+hvBbPjsWnxDLxlCGyM8PN6UuWjEUCYmZhO67xIV9Xasa/r/vDnq+Xyq4Lo27g8QSbO5YzARu0D1Sps3g==",
      "license": "MIT",
      "dependencies": {
-        "loose-envify": "^1.1.0",
-        "scheduler": "^0.23.2"
+        "scheduler": "^0.27.0"
      },
      "peerDependencies": {
-        "react": "^18.3.1"
+        "react": "^19.2.6"
      }
    },
    "node_modules/react-is": {
@@ -7836,9 +7800,9 @@
      }
    },
    "node_modules/react-zoom-pan-pinch": {
-      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/react-zoom-pan-pinch/-/react-zoom-pan-pinch-3.7.0.tgz",
-      "integrity": "sha512-UmReVZ0TxlKzxSbYiAj+LeGRW8s8LraAFTXRAxzMYnNRgGPsxCudwZKVkjvGmjtx7SW/hZamt69NUmGf4xrkXA==",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/react-zoom-pan-pinch/-/react-zoom-pan-pinch-4.0.3.tgz",
+      "integrity": "sha512-N2Hi6L78fFmhRra+ORpFSW7WST5x6kxpOPplIvtB0b7b+U2anpo1z1wLgaWRPS2kUSqcraRG+JgBCIlDJnqqAg==",
      "license": "MIT",
      "engines": {
        "node": ">=8",
@@ -8093,13 +8057,10 @@
      }
    },
    "node_modules/scheduler": {
-      "version": "0.23.2",
-      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.23.2.tgz",
-      "integrity": "sha512-UOShsPwz7NrMUqhR6t0hWjFduvOzbtv7toDH1/hIrfRNIDBnnBWd0CwJTGvTpngVlmwGCdP9/Zl/tVrDqcuYzQ==",
-      "license": "MIT",
-      "dependencies": {
-        "loose-envify": "^1.1.0"
-      }
+      "version": "0.27.0",
+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.27.0.tgz",
+      "integrity": "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q==",
+      "license": "MIT"
    },
    "node_modules/semver": {
      "version": "7.7.3",
@@ -8268,9 +8229,9 @@
      }
    },
    "node_modules/tar": {
-      "version": "7.5.3",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-7.5.3.tgz",
-      "integrity": "sha512-ENg5JUHUm2rDD7IvKNFGzyElLXNjachNLp6RaGf4+JOgxXHkqA+gq81ZAMCUmtMtqBsoU62lcp6S27g1LCYGGQ==",
+      "version": "7.5.13",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-7.5.13.tgz",
+      "integrity": "sha512-tOG/7GyXpFevhXVh8jOPJrmtRpOTsYqUIkVdVooZYJS/z8WhfQUX8RJILmeuJNinGAMSu1veBr4asSHFt5/hng==",
      "dev": true,
      "license": "BlueOak-1.0.0",
      "dependencies": {
@@ -8558,9 +8519,9 @@
      }
    },
    "node_modules/undici-types": {
-      "version": "7.16.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
-      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "version": "7.19.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
+      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
      "devOptional": true,
      "license": "MIT"
    },
@@ -8693,9 +8654,9 @@
      }
    },
    "node_modules/uuid": {
-      "version": "13.0.0",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-13.0.0.tgz",
-      "integrity": "sha512-XQegIaBTVUjSHliKqcnFqYypAd4S+WCYt5NIeRs6w/UAry7z8Y9j5ZwRRL4kzq9U3sD6v+85er9FvkEaBpji2w==",
+      "version": "14.0.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-14.0.0.tgz",
+      "integrity": "sha512-Qo+uWgilfSmAhXCMav1uYFynlQO7fMFiMVZsQqZRMIXp0O7rR7qjkj+cPvBHLgBqi960QCoo/PH2/6ZtVqKvrg==",
      "funding": [
        "https://github.com/sponsors/broofa",
        "https://github.com/sponsors/ctavan"
@@ -19,38 +19,38 @@
  },
  "dependencies": {
    "gitnexus-shared": "file:../gitnexus-shared",
-    "@langchain/anthropic": "^1.3.27",
-    "@langchain/core": "^1.1.41",
+    "@langchain/anthropic": "^1.3.29",
+    "@langchain/core": "^1.1.44",
    "@langchain/google-genai": "^2.1.28",
    "@langchain/langgraph": "^1.2.9",
    "@langchain/ollama": "^1.2.6",
-    "@langchain/openai": "^1.4.4",
+    "@langchain/openai": "^1.4.5",
    "@sigma/edge-curve": "^3.1.0",
    "@tailwindcss/vite": "^4.2.4",
-    "axios": "^1.13.2",
+    "axios": "^1.16.0",
    "d3": "^7.9.0",
-    "dompurify": "^3.3.3",
+    "dompurify": "^3.4.2",
    "graphology": "^0.26.0",
    "graphology-indices": "^0.17.0",
    "graphology-layout-force": "^0.2.4",
    "graphology-layout-forceatlas2": "^0.10.1",
    "graphology-layout-noverlap": "^0.4.2",
    "graphology-utils": "^2.3.0",
-    "langchain": "^1.3.4",
+    "langchain": "^1.3.5",
    "lru-cache": "^11.2.4",
-    "lucide-react": "^1.11.0",
+    "lucide-react": "^1.14.0",
    "mermaid": "^11.14.0",
    "mnemonist": "^0.39.0",
    "pandemonium": "^2.4.0",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.2.5",
+    "react-dom": "^19.2.6",
    "react-markdown": "^10.1.0",
    "react-syntax-highlighter": "^16.1.0",
-    "react-zoom-pan-pinch": "^3.7.0",
+    "react-zoom-pan-pinch": "^4.0.3",
    "remark-gfm": "^4.0.1",
    "sigma": "^3.0.2",
    "tailwindcss": "^4.2.4",
-    "uuid": "^13.0.0",
+    "uuid": "^14.0.0",
    "zod": "^3.25.76"
  },
  "devDependencies": {
@@ -59,15 +59,15 @@
    "@testing-library/jest-dom": "^6.9.1",
    "@testing-library/react": "^16.3.2",
    "@testing-library/user-event": "^14.6.1",
-    "@types/dompurify": "^3.0.5",
-    "@types/node": "^24.10.1",
-    "@types/react": "^18.3.5",
-    "@types/react-dom": "^18.3.0",
+    "@types/dompurify": "^3.2.0",
+    "@types/node": "^25.6.0",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
    "@types/react-syntax-highlighter": "^15.5.13",
    "@vercel/node": "^5.5.16",
    "@vitejs/plugin-react": "^5.1.4",
    "@vitest/coverage-v8": "^4.1.5",
-    "jsdom": "^29.0.2",
+    "jsdom": "^29.1.1",
    "tree-sitter-wasms": "^0.1.13",
    "typescript": "^5.4.5",
    "vite": "^8.0.10",
@@ -277,8 +277,10 @@ const extractInstanceName = (endpoint: string): string => {
  try {
    const url = new URL(endpoint);
    const hostname = url.hostname;
-    // Extract the first part before .openai.azure.com
-    const match = hostname.match(/^([^.]+)\.openai\.azure\.com/);
+    // Extract the first part before .openai.azure.com. The trailing `$`
+    // anchor is required (CodeQL js/regex/missing-regexp-anchor): without
+    // it `evil.openai.azure.com.attacker.tld` would match.
+    const match = hostname.match(/^([^.]+)\.openai\.azure\.com$/);
    if (match) {
      return match[1];
    }
@@ -20,6 +20,7 @@ import {
  ProviderConfig,
 } from './types';
 import { DEFAULT_OPENROUTER_BASE_URL, DEFAULT_OLLAMA_BASE_URL } from '../../config/ui-constants';
+import { resilientFetch } from 'gitnexus-shared';

 const STORAGE_KEY = 'gitnexus-llm-settings';

@@ -407,7 +408,10 @@ export const getAvailableModels = (provider: LLMProvider): string[] => {
 */
 export const fetchOpenRouterModels = async (): Promise<Array<{ id: string; name: string }>> => {
  try {
-    const response = await fetch(`${DEFAULT_OPENROUTER_BASE_URL}/models`);
+    const response = await resilientFetch(`${DEFAULT_OPENROUTER_BASE_URL}/models`, undefined, {
+      breakerKey: 'openrouter-models',
+      retry: { maxAttempts: 2, baseDelayMs: 500, capDelayMs: 2_000 },
+    });
    if (!response.ok) throw new Error('Failed to fetch models');
    const data = await response.json();
    return data.data.map((model: any) => ({
@@ -278,8 +278,11 @@ export const createGraphRAGTools = (backend: GraphRAGBackend) => {
                const val = row[col];
                if (val === null || val === undefined) return '';
                if (typeof val === 'object') return JSON.stringify(val);
-                // Truncate long values and escape pipe characters
-                const str = String(val).replace(/\|/g, '\\|');
+                // Truncate long values and escape pipe characters. Escape
+                // backslashes FIRST so the subsequent pipe escape isn't
+                // unescaped by a trailing backslash (CodeQL
+                // js/incomplete-sanitization).
+                const str = String(val).replace(/\\/g, '\\\\').replace(/\|/g, '\\|');
                return str.length > 60 ? str.slice(0, 57) + '...' : str;
              });
              return `| ${values.join(' | ')} |`;
@@ -4,8 +4,8 @@ const DEFAULT_BOTTOM_THRESHOLD = 100;
 const USER_SCROLL_EPSILON = 5;

 export interface UseAutoScrollResult {
-  scrollContainerRef: React.RefObject<HTMLDivElement>;
-  messagesContainerRef: React.RefObject<HTMLDivElement>;
+  scrollContainerRef: React.RefObject<HTMLDivElement | null>;
+  messagesContainerRef: React.RefObject<HTMLDivElement | null>;
  isAtBottom: boolean;
  scrollToBottom: (behavior?: ScrollBehavior) => void;
 }
@@ -65,7 +65,7 @@ interface UseSigmaOptions {
 }

 interface UseSigmaReturn {
-  containerRef: React.RefObject<HTMLDivElement>;
+  containerRef: React.RefObject<HTMLDivElement | null>;
  sigmaRef: React.RefObject<Sigma | null>;
  setGraph: (graph: Graph<SigmaNodeAttributes, SigmaEdgeAttributes>) => void;
  zoomIn: () => void;
@@ -7,6 +7,7 @@
 */

 import type { GraphNode, GraphRelationship } from 'gitnexus-shared';
+import { CircuitOpenError, ResilientFetchExhaustedError, resilientFetch } from 'gitnexus-shared';

 // ── Types ──────────────────────────────────────────────────────────────────

@@ -72,7 +73,19 @@ export class BackendError extends Error {
  constructor(
    message: string,
    public readonly status: number,
-    public readonly code: 'network' | 'server' | 'client' | 'not_found' | 'timeout',
+    public readonly code:
+      | 'network'
+      | 'server'
+      | 'client'
+      | 'not_found'
+      | 'timeout'
+      | 'rate_limited',
+    /**
+     * Milliseconds until the caller should retry. Populated for rate-limited
+     * responses (HTTP 429) from the server's `Retry-After` header. `undefined`
+     * for every other code, including `client` errors that aren't 429.
+     */
+    public readonly retryAfterMs?: number,
  ) {
    super(message);
    this.name = 'BackendError';
@@ -192,8 +205,32 @@ export function streamSSE<T = unknown>(url: string, handlers: SSEHandlers<T>): A

 let _backendUrl = 'http://localhost:4747';

+/**
+ * Validate that a backend URL is a safe http:// or https:// origin before
+ * storing it as the fetch target base (CodeQL js/client-side-request-forgery).
+ *
+ * Throws if the URL uses a non-HTTP scheme (e.g. javascript:, data:, file://).
+ * All other well-formed http/https URLs are accepted — the client intentionally
+ * supports connecting to remote GitNexus servers, not just localhost.
+ */
+export function validateBackendUrl(url: string): void {
+  let parsed: URL;
+  try {
+    parsed = new URL(url);
+  } catch {
+    // Do not echo raw input — it may contain credentials.
+    throw new Error('Invalid backend URL: must be a well-formed http:// or https:// URL');
+  }
+  if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
+    // Use parsed.protocol only (scheme), not the full URL, to avoid leaking credentials.
+    throw new Error(`Backend URL must use http:// or https:// (got ${parsed.protocol})`);
+  }
+}
+
 export const setBackendUrl = (url: string): void => {
-  _backendUrl = url.replace(/\/$/, '');
+  const trimmed = url.replace(/\/$/, '');
+  validateBackendUrl(trimmed);
+  _backendUrl = trimmed;
 };

 export const getBackendUrl = (): string => _backendUrl;
@@ -225,29 +262,91 @@ export function normalizeServerUrl(input: string): string {
 const DEFAULT_TIMEOUT_MS = 30_000;
 const PROBE_TIMEOUT_MS = 2_000;

+/** Idempotent HTTP methods. Other verbs (POST, PATCH, PUT, DELETE) get
+ *  a single-attempt retry budget by default to avoid duplicate side
+ *  effects on retry — a POST that 5xx'd may have already executed
+ *  server-side. Callers that have idempotency keys or otherwise know
+ *  their mutation is safe to retry can opt in via `forceRetry`. */
+const IDEMPOTENT_METHODS = new Set(['GET', 'HEAD', 'OPTIONS']);
+
 const fetchWithTimeout = async (
  url: string,
  init: RequestInit = {},
  timeoutMs: number = DEFAULT_TIMEOUT_MS,
+  /**
+   * Force a retry budget on non-idempotent methods. Default false.
+   * Pass true only when the endpoint is known-idempotent (e.g. DELETE
+   * of a known-deleted resource — second call is a 404 / no-op) AND
+   * the duplicate-side-effect window is acceptable.
+   */
+  forceRetry = false,
 ): Promise<Response> => {
-  const controller = new AbortController();
-  // Merge external signal if provided
+  // Merge the external caller signal (if any) with an
+  // `AbortSignal.timeout()` so a timer-fired abort produces a
+  // `DOMException` with `name === 'TimeoutError'` — which
+  // `resilientFetch` correctly classifies as terminal-network (no
+  // retry, no breaker hit). A manual `AbortController.abort()` would
+  // produce `name === 'AbortError'` and route through the
+  // retryable-network branch, which mis-penalizes the breaker for
+  // user-side network slowness.
+  const timeoutSignal = AbortSignal.timeout(timeoutMs);
  const externalSignal = init.signal;
-  if (externalSignal) {
-    externalSignal.addEventListener('abort', () => controller.abort());
+  const signal = externalSignal ? AbortSignal.any([timeoutSignal, externalSignal]) : timeoutSignal;
+
+  const method = (init.method ?? 'GET').toUpperCase();
+  const isIdempotent = IDEMPOTENT_METHODS.has(method);
+  const maxAttempts = isIdempotent || forceRetry ? 2 : 1;
+
+  // Key the breaker by the current backend origin so switching backend
+  // URLs (e.g. recovering from a flapping local server by pointing at
+  // a different host) gives the new origin a fresh breaker state. A
+  // single shared `'web-backend'` key would otherwise leave a user
+  // locked out for the full cooldown after one bad host trips the
+  // circuit. The malformed-URL fallback is defensive — `setBackendUrl`
+  // normalizes input, so this branch shouldn't fire in practice.
+  let breakerKey: string;
+  try {
+    breakerKey = `web-backend:${new URL(_backendUrl).origin}`;
+  } catch {
+    breakerKey = 'web-backend:invalid';
  }
-  const timer = setTimeout(() => controller.abort(), timeoutMs);

  try {
-    const response = await fetch(url, { ...init, signal: controller.signal });
+    // Bounded retries + 5xx/429 handling are delegated to resilientFetch.
+    // Method-aware budget: idempotent verbs retry once on transient
+    // backend failures; mutations (POST/PATCH/PUT/DELETE) default to
+    // single-attempt to avoid duplicate side effects.
+    const response = await resilientFetch(
+      url,
+      { ...init, signal },
+      {
+        breakerKey,
+        retry: { maxAttempts, baseDelayMs: 250, capDelayMs: 1500 },
+      },
+    );
    return response;
  } catch (error: unknown) {
-    if (error instanceof DOMException && error.name === 'AbortError') {
-      if (externalSignal?.aborted) {
-        throw new BackendError('Request aborted', 0, 'network');
-      }
+    if (error instanceof CircuitOpenError) {
+      throw new BackendError(
+        `GitNexus backend at ${_backendUrl} is unhealthy; retry in ${Math.ceil(error.retryAfterMs / 1000)}s`,
+        0,
+        'network',
+      );
+    }
+    if (error instanceof ResilientFetchExhaustedError) {
+      // Fall through to caller — surface the raw response so assertOk
+      // can craft the BackendError with the right code.
+      return error.response;
+    }
+    if (error instanceof DOMException && error.name === 'TimeoutError') {
      throw new BackendError(`Request to ${url} timed out after ${timeoutMs}ms`, 0, 'timeout');
    }
+    if (error instanceof DOMException && error.name === 'AbortError') {
+      // External caller-driven cancellation — `timeoutSignal` would
+      // have surfaced as TimeoutError above, so this branch covers
+      // only the externally-aborted case.
+      throw new BackendError('Request aborted', 0, 'network');
+    }
    if (error instanceof TypeError) {
      throw new BackendError(
        `Network error reaching GitNexus backend at ${_backendUrl}: ${error.message}`,
@@ -256,8 +355,6 @@ const fetchWithTimeout = async (
      );
    }
    throw error;
-  } finally {
-    clearTimeout(timer);
  }
 };

@@ -279,10 +376,32 @@ const assertOk = async (response: Response): Promise<void> => {
  const code =
    response.status === 404
      ? 'not_found'
-      : response.status >= 400 && response.status < 500
-        ? 'client'
-        : 'server';
-  throw new BackendError(message, response.status, code);
+      : response.status === 429
+        ? 'rate_limited'
+        : response.status >= 400 && response.status < 500
+          ? 'client'
+          : 'server';
+
+  // Retry-After is the standard HTTP signal for when the client may try again.
+  // express-rate-limit emits it on 429 with seconds (integer) or HTTP-date.
+  // We accept both shapes; an unparseable header yields undefined retryAfterMs.
+  let retryAfterMs: number | undefined;
+  if (response.status === 429) {
+    const header = response.headers.get('retry-after');
+    if (header) {
+      const seconds = Number(header);
+      if (Number.isFinite(seconds) && seconds >= 0) {
+        retryAfterMs = seconds * 1000;
+      } else {
+        const dateMs = Date.parse(header);
+        if (Number.isFinite(dateMs)) {
+          retryAfterMs = Math.max(0, dateMs - Date.now());
+        }
+      }
+    }
+  }
+
+  throw new BackendError(message, response.status, code, retryAfterMs);
 };

 const repoParam = (repo?: string): string => (repo ? `repo=${encodeURIComponent(repo)}` : '');
@@ -0,0 +1,110 @@
+/**
+ * Method-aware retry budget + timeout-as-TimeoutError verification for
+ * backend-client's `fetchWithTimeout`.
+ *
+ * Closes review findings on PR #1448:
+ *   - Non-idempotent POST/DELETE must NOT be retried by default —
+ *     a 5xx on `startAnalyze` could otherwise start a duplicate job.
+ *   - Timer-fired timeout must surface as `DOMException(name='TimeoutError')`,
+ *     not `AbortError`, so resilientFetch routes it through the
+ *     terminal-network branch (no retry, no breaker hit).
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { getBreaker } from 'gitnexus-shared';
+import { __resetBreakerRegistry__ } from 'gitnexus-shared/test-helpers';
+import { fetchRepos, setBackendUrl, startAnalyze } from '../../src/services/backend-client';
+
+const BASE = 'http://localhost:4747';
+
+describe('backend-client retry budget (method-aware)', () => {
+  beforeEach(() => {
+    __resetBreakerRegistry__();
+    setBackendUrl(BASE);
+  });
+
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  it('GET retries once on transient 503 (idempotent verb)', async () => {
+    let n = 0;
+    const fetchMock = vi.fn(async () => {
+      n += 1;
+      if (n === 1) return new Response('boom', { status: 503 });
+      return new Response('[]', {
+        status: 200,
+        headers: { 'Content-Type': 'application/json' },
+      });
+    });
+    vi.stubGlobal('fetch', fetchMock);
+
+    const repos = await fetchRepos();
+    expect(repos).toEqual([]);
+    // 1 retry budget on idempotent GET → 2 total fetch calls.
+    expect(fetchMock).toHaveBeenCalledTimes(2);
+  });
+
+  it('POST does NOT retry on 503 by default (non-idempotent verb)', async () => {
+    const fetchMock = vi.fn(async () => new Response('boom', { status: 503 }));
+    vi.stubGlobal('fetch', fetchMock);
+
+    await expect(startAnalyze({ path: '/tmp/repo' })).rejects.toBeTruthy();
+    // Single attempt — never duplicates a job-start POST.
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+  });
+
+  it('switching backend URL after a circuit opens reaches a fresh breaker (U3)', async () => {
+    // Pre-open the breaker for host-A by directly recording 3 failures.
+    setBackendUrl('http://host-a.test:4747');
+    const aKey = 'web-backend:http://host-a.test:4747';
+    const breakerA = getBreaker(aKey);
+    breakerA.recordFailure();
+    breakerA.recordFailure();
+    breakerA.recordFailure();
+    expect(breakerA.getState()).toBe('open');
+
+    // Switch to host-B and make a request — must succeed against the
+    // new origin without tripping the host-A circuit. Under the old
+    // single-key behaviour the call would throw CircuitOpenError.
+    setBackendUrl('http://host-b.test:4747');
+    const fetchMock = vi.fn(
+      async () =>
+        new Response('[]', {
+          status: 200,
+          headers: { 'Content-Type': 'application/json' },
+        }),
+    );
+    vi.stubGlobal('fetch', fetchMock);
+
+    const repos = await fetchRepos();
+    expect(repos).toEqual([]);
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+
+    // Host-A's breaker is still open in cooldown.
+    expect(breakerA.getState()).toBe('open');
+    // Host-B has its own (fresh) breaker.
+    const bKey = 'web-backend:http://host-b.test:4747';
+    expect(getBreaker(bKey).getState()).toBe('closed');
+    expect(getBreaker(bKey).getConsecutiveFailures()).toBe(0);
+  });
+
+  it('breaker not incremented when timeout fires (TimeoutError, not AbortError)', async () => {
+    // Reject directly with a TimeoutError DOMException, mimicking what
+    // `fetch` produces when its `AbortSignal.timeout()`-wired signal
+    // fires. The real-fetch path goes signal.reason → reject(reason);
+    // we shortcut that here so the test doesn't have to wait the
+    // 30-second default timeout.
+    const fetchMock = vi.fn(async () => {
+      throw new DOMException('aborted by timeout', 'TimeoutError');
+    });
+    vi.stubGlobal('fetch', fetchMock);
+
+    await expect(fetchRepos()).rejects.toMatchObject({ code: 'timeout' });
+
+    // The breaker must not have been penalized for a local timeout.
+    expect(getBreaker(`web-backend:${BASE}`).getConsecutiveFailures()).toBe(0);
+    // Timeout is terminal — no retry attempted.
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+  });
+});
@@ -1,5 +1,11 @@
 import { afterEach, describe, expect, it, vi } from 'vitest';
-import { fetchGraph, normalizeServerUrl, setBackendUrl } from '../../src/services/backend-client';
+import {
+  fetchGraph,
+  getBackendUrl,
+  normalizeServerUrl,
+  setBackendUrl,
+  validateBackendUrl,
+} from '../../src/services/backend-client';

 describe('normalizeServerUrl', () => {
  it('adds http:// to localhost', () => {
@@ -165,3 +171,61 @@ describe('fetchGraph', () => {
    });
  });
 });
+
+describe('validateBackendUrl', () => {
+  it('allows http:// URLs', () => {
+    expect(() => validateBackendUrl('http://localhost:4747')).not.toThrow();
+    expect(() => validateBackendUrl('http://127.0.0.1:4747')).not.toThrow();
+  });
+
+  it('allows https:// URLs', () => {
+    expect(() => validateBackendUrl('https://gitnexus.example.com')).not.toThrow();
+    expect(() => validateBackendUrl('https://my-server.internal:4747')).not.toThrow();
+  });
+
+  it('rejects non-http schemes', () => {
+    expect(() => validateBackendUrl('javascript:alert(1)')).toThrow('must use http:// or https://');
+    expect(() => validateBackendUrl('file:///etc/passwd')).toThrow('must use http:// or https://');
+    expect(() => validateBackendUrl('data:text/plain,evil')).toThrow(
+      'must use http:// or https://',
+    );
+  });
+
+  it('rejects malformed URLs', () => {
+    expect(() => validateBackendUrl('not-a-url')).toThrow('Invalid backend URL');
+  });
+
+  it('does not include the raw URL in error messages (credential hygiene)', () => {
+    const urlWithCreds = 'javascript:alert("sk-secret")';
+    let msg = '';
+    try {
+      validateBackendUrl(urlWithCreds);
+    } catch (e) {
+      msg = (e as Error).message;
+    }
+    expect(msg).not.toContain('sk-secret');
+    expect(msg).not.toContain(urlWithCreds);
+  });
+});
+
+describe('setBackendUrl', () => {
+  it('accepts valid http URLs', () => {
+    expect(() => setBackendUrl('http://localhost:4747')).not.toThrow();
+  });
+
+  it('accepts valid https URLs', () => {
+    expect(() => setBackendUrl('https://my-server.example.com')).not.toThrow();
+  });
+
+  it('rejects non-http/https schemes', () => {
+    expect(() => setBackendUrl('javascript:alert(1)')).toThrow('must use http:// or https://');
+    expect(() => setBackendUrl('file:///etc/passwd')).toThrow('must use http:// or https://');
+  });
+
+  it('does not mutate _backendUrl when validation fails', () => {
+    setBackendUrl('http://localhost:4747');
+    expect(() => setBackendUrl('javascript:alert(1)')).toThrow();
+    // State must be preserved — validation must happen before the assignment
+    expect(getBackendUrl()).toBe('http://localhost:4747');
+  });
+});
@@ -4,6 +4,73 @@ All notable changes to GitNexus will be documented in this file.

 ## [Unreleased]

+## [1.6.4] - 2026-05-10
+
+### Added
+
+- **`gitnexus publish`** — opt-in command to push your indexed graph to the understand-quickly registry for shareable browsing (#1425)
+- **`IncludeExtractor` for C++** — cross-repo include tracking joins the group contract pipeline (#1156)
+- **Unreal Engine C++ support** — strips reflection macros (`UCLASS`, `UFUNCTION`, `UPROPERTY`, etc.) before tree-sitter parses, so UE projects index cleanly (#1439)
+- **Thrift contracts extractor** — group-mode contract detection for Apache Thrift IDL (#1234)
+- **Workspace extractors for Node, Python, Go, Java, Elixir** — group-mode auto-discovery of cross-package boundaries (#1260)
+- **Rust workspace cross-crate contracts** — auto-discovery of `[workspace]` member crates and their cross-crate links (#1256)
+- **Go scope-resolution hooks** — Go joins Python / C# / TypeScript on the registry-primary RFC #909 path (#1302)
+- **TypeScript registry-primary scope resolution (Ring 3)** — TypeScript fully migrated to scope-based resolution (#1050)
+- **Configurable group cross-link path exclusions** — reduces false-positive contract links in vendored / monorepo trees (#1093)
+- **MCP tool safety annotations** — every MCP tool advertises read-only / mutating semantics so hosts can prompt appropriately (#1127)
+- **`--embeddings <limit>` opt-in cap** — bound the embeddings pass on huge graphs (closes #382, #1375)
+- **Pino structured logger** — replaces ad-hoc console output across the core with structured JSON logs (with pretty-print for TTY) (#1336)
+- **Shared resilient-fetch helper** — single retries + circuit breaker module reused by HF / Docker / publish flows (#1448)
+- **`/autofix` ChatOps button** — fork-safe PR autofix pipeline replaces the inline reviewdog flow (#1446, #1458)
+- **Automated security & vulnerability scans** in CI (#1297, #1455)
+
+### Fixed
+
+- **FTS read-only DB cluster** — hook resolves canonical repo root and guards read-only FTS ensure; missing-FTS warning is now surfaced. Closes #1255, #1287, #1170, #1449, #1440, #1216, #1438 (#1226, #1418, #1107, #1123)
+- **WAL corruption recovery** — quarantine corrupted `.wal` files instead of failing analyze; CHECKPOINT before close prevents recurrence; `safeClose` consolidates flush. Closes #1402, #1236, #1273, #1361 (#1417, #1314, #1377)
+- **Embedding download failures** — actionable HF_ENDPOINT guidance, retries, timeout, and circuit breaker; bridge `HF_ENDPOINT` to transformers.js; iterative DFS; HF cache via `os.homedir()`. Closes #1378, #1437, #1205 (#1419, #1252, #1078)
+- **Windows reliability** — pin tree-sitter-c/cpp to fix segfault, prefer `.cmd`/`.bat` from `where` output, robust LadybugDB lock acquisition for CI integration tests, surface silent finalize-skips so analyze cannot exit 0 without persisting. Closes #1242, #1427, #1447, #1468, #1400; partial #1218 (#1243, #1299, #1430, #1237, #1226, #1235)
+- **DuckDB / LadybugDB native** — bumped to 0.16.0 then 0.16.1; prevent extension install hangs; CHECKPOINT before close; WAL quarantine on corruption. Closes #1162, #1160, #273 (#1235, #1326, #1129, #1314, #1417)
+- **C# scope-resolution "Cannot add property" crashes** — generic typed properties included in context and impact, fixing crashes on Unity ECS partial structs and on properties whose name matches the class name. Closes #1426, #1465 (#1399)
+- **C# frozen-bucket regression** + scope-resolution I8 hardening — closes #1066 (#1082, #1085)
+- **Scope resolution** — same-range Module-as-parent for top-level scopes (closes #1086) (#1087); avoid variadic reference-site aggregation (#1112); skip empty scope extraction (#1100); classify Python class methods as Method (#1102)
+- **Python** — index repos with empty `__init__.py` and >32 KB files (#1163); walk ancestors for multi-segment dotted imports (#1241); deterministic multi-segment suffix fallback (#1253)
+- **TypeScript** — capture missed CALLS edges from HOF callbacks and JSX (#1175); name HOC-wrapped const declarations (`forwardRef` / `memo` / `useCallback` / `useMemo` / `observer`) (#1261); pair-with-arrow `@declaration.function` anchored on inner arrow
+- **Go** — loose equality for `Array.find()` null checks (#1384)
+- **Swift** — switched to the official prebuilt parser runtime (#1130)
+- **Server hardening cluster (U2–U8)** — JS path-injection on `/api/file` + docker-server (U2, #1322); git-clone path/CLI-injection / ReDoS hardening (U3, #1325); per-route rate limiting on FS-touching endpoints (U4, #1327); URL/regex/tag-filter sanitization (U7, #1330); ReDoS in cobol-preprocessor + rust-workspace + cross-impact resource exhaustion (U8, #1331); critical type-confusion + validation helper (#1317); rate-limit `/api/analyze` and `/api/embed` (closes #1328, #1339); IPv6 ipKeyGenerator (closes #1360, #1374); IPv4-compatible IPv6 / NAT64 SSRF bypasses in `validateGitUrl` (closes #1148, 95814847); predictable tempfile names → `crypto.randomBytes` (#1387); log-injection / http-to-file-access / client-side request forgery (#1456); pin Docker Node base images + Trivy verification + Dependabot policy (#1455)
+- **Group / contracts** — `runExactMatch` honours `.gitnexusignore` via shared `IgnoreService` (closes #1185, #1247); custom manifest links resolved against graph symbols (#1254); `IgnoreService` EACCES test under uid=0 (#1108)
+- **MCP** — close MCP server timeout via stdout discipline + cold-start friction (#1383); avoid `git` from non-repo cwd in sibling-cwd match (closes #1138, #1293); start MCP bridge correctly when using `npx` (#1114); project `tool_map` flows from handlers (#1113); parallelize staleness checks in `list_repos` (#1416)
+- **Storage / CLI** — derive registry name from canonical repo root, not worktree slug (closes #1259, #1296); `--skip-git` treats cwd as index root (#1245); keep GitNexus ignores inside `.gitnexus/` (#1248); surface silent finalize-skips so `analyze` cannot exit 0 without persisting (closes #1169, #1237); ignore global registry during staleness checks (#1141); use `os.homedir()` instead of `process.env.HOME` for HF cache dir (#1078); correct OpenCode skills install path in status message (#1386)
+- **Docker / server** — dedicated health endpoint for container healthcheck (closes #1147, #1355); HEAD probe so SSE heartbeat doesn't time out healthcheck (#1182); flush WAL after `/api/embed` so search sees new embeddings (closes #1149, #1359); platform-aware semantic fallback (#1150); skip vector index query on unsupported platforms (closes #1178, #1181); serve web UI at root path instead of 404 (#1048)
+- **Worker pool** — wait for replacement worker online before dispatch (#1324); prevent premature pool resolution in worker split-and-retry path (#1321); recover worker parse stalls (#1121); widened CI flake-tolerant timeouts (#1323, #1347, #1354)
+- **Embeddings storage** — CHECKPOINT before closing DB to prevent WAL corruption (#1314)
+- **Performance** — replace O(n³) C3 merge loop with O(n²) head-pointer algorithm (#1316)
+- **Install** — vendor tree-sitter-dart source (#1125)
+- **Git utils** — suppress stderr leak in `getCurrentCommit` and `getGitRoot` (closes #1172, #1341)
+- **Search** — load FTS during core DB init (#1123); create FTS indexes during `analyze` (#1107); surface warning when FTS indexes are missing (#1418)
+- **Hooks** — clarify `PostToolUse` hook is notification-only, not auto-reindex (#1070)
+- **Docs** — README Web UI section corrected (closes #1110, #1159, #2ff3e64f); Goliath capitalisation typo (#1126)
+- **CI** — fork-safe PR autofix pipeline (#1446); consolidated Claude review workflow (#1258); fine-grained PAT for RC tag push (#1407); handle expired artifacts in base coverage fetch (#1410, #1412); allow expected legacy parity failures (#1099); avoid duplicate main push checks; isolate native LadybugDB / CLI e2e flakes; seed e2e with a small fixture repo (#1249); configure e2e GitNexus home at runtime; widen rate-limit test window for Windows CI (#1347)
+
+### Changed
+
+- **`gitnexus publish` artefact contract** — universal opt-in publish format introduced (#1425, #1458)
+- **Refactor: per-language patterns consolidated into `LanguageProvider`** (#1279)
+- **Refactor: `safeClose` helper** consolidates WAL flush across LadybugDB call sites (#1377)
+- **Quality: exclude `test/fixtures` from CodeQL, ESLint, and Prettier** (#1313)
+- **Regression coverage** for `.gitnexusignore` behaviour with `--skip-git` (#1450)
+
+### Chore / Dependencies
+
+- `@ladybugdb/core` 0.16.0 → 0.16.1 (#1235, #1326)
+- `@anthropic-ai/sdk` (#1442), `@langchain/anthropic` (#1389), `@langchain/core` (#1394), `@langchain/openai` (#1215)
+- `hono` 4.12.9 → 4.12.18 + `@hono/node-server` (#1310, #1311, #1443)
+- `axios` (#1345), `fast-uri` 3.1.0 → 3.1.2 (#1441), `lru-cache` 11.3.5 → 11.3.6 (#1344), `mnemonist` 0.40.3 → 0.40.4 (#1239), `express-rate-limit` (#1343, #1397), `onnxruntime-node` (#1213, #1435), `uuid` 13 → 14 in /gitnexus-web (#1211, after revert #1222 / re-land #1250 + #1208)
+- `react`/`@types/react` (#1210), `react-dom` 19.2.5 → 19.2.6 (#1396), `react-zoom-pan-pinch` (#1214), `jsdom` 29.0.2 → 29.1.1 (#1395)
+- npm_and_yarn group bump (#1312), uv group bump (#1315), `python-dotenv` (#1320), `@types/node` (#1212, #1421, #1436)
+- GitHub Actions: `docker/build-push-action` 6.19.2 → 7.1.0 (#1391), `github/codeql-action` 3.35.3 → 4.35.3 (#1390)
+
 ## [1.6.3] - 2026-04-24

 ### Added
@@ -1,9 +1,19 @@
-FROM node:20-bookworm
+# Pinned npm version — keep in sync with the root Dockerfile.cli and
+# Dockerfile.web.
+ARG NPM_VERSION=11.14.1
+
+# node:22-bookworm-slim
+FROM node:22-bookworm-slim@sha256:9f6d5975c7dca860947d3915877f85607946403fc55349f39b4bc3688448bb6e
+ARG NPM_VERSION
 WORKDIR /app
-RUN apt-get -o Acquire::Check-Valid-Until=false -o Acquire::Check-Date=false update && apt-get install -y python3 make g++ && rm -rf /var/lib/apt/lists/*
+RUN npx --yes npm@${NPM_VERSION} install -g npm@${NPM_VERSION} \
+    && apt-get -o Acquire::Check-Valid-Until=false -o Acquire::Check-Date=false update \
+    && apt-get install -y python3 make g++ \
+    && rm -rf /var/lib/apt/lists/*
 COPY . .
 RUN npm ci --ignore-scripts \
-    && node scripts/patch-tree-sitter-swift.cjs \
+    && npm rebuild tree-sitter-swift 2>&1 \
+    && node -e "require('tree-sitter-swift')" \
    && (npm rebuild 2>&1 || true) \
    && cd node_modules/tree-sitter-kotlin && npx --yes node-gyp rebuild 2>&1
 CMD ["npx", "vitest", "run", "test/integration", "--reporter=verbose"]
@@ -156,6 +156,7 @@ gitnexus analyze --embeddings    # Enable embedding generation (slower, better s
 gitnexus analyze --skip-agents-md  # Preserve custom AGENTS.md/CLAUDE.md gitnexus section edits
 gitnexus analyze --verbose       # Log skipped files when parsers are unavailable
 gitnexus analyze --max-file-size 1024  # Skip files larger than N KB (default: 512, cap: 32768)
+gitnexus analyze --worker-timeout 60  # Increase worker idle timeout for slow parses
 gitnexus mcp                     # Start MCP server (stdio) — serves all indexed repos
 gitnexus serve                   # Start local HTTP server (multi-repo) for web UI
 gitnexus index                   # Register an existing .gitnexus/ folder into the global registry
@@ -295,6 +296,25 @@ If `npm install -g gitnexus` fails on native modules:
 npm install -g gitnexus
 ```

+### Analyze warns about unavailable FTS or VECTOR extensions
+
+GitNexus uses optional DuckDB extensions for BM25 and vector search. The `gitnexus serve` and MCP read paths only ever try to `LOAD` the extensions — they never block on a network install. The `analyze` command, by default, attempts one bounded out-of-process `INSTALL` if `LOAD` fails and proceeds even when that install times out, so the index is always written to disk; BM25/vector search degrade gracefully until the extensions become available.
+
+Configure the behavior with two environment variables:
+
+| Variable | Values | Default | Effect |
+|----------|--------|---------|--------|
+| `GITNEXUS_LBUG_EXTENSION_INSTALL` | `auto`, `load-only`, `never` | `auto` | `auto` runs one bounded INSTALL if LOAD fails. `load-only` only uses already-installed extensions (recommended for offline / firewalled environments). `never` skips optional extensions entirely. |
+| `GITNEXUS_LBUG_EXTENSION_INSTALL_TIMEOUT_MS` | positive integer | `15000` | Wall-clock budget for the out-of-process `INSTALL` child before it is killed. |
+
+```bash
+# Offline/airgapped: never reach the network for extensions
+GITNEXUS_LBUG_EXTENSION_INSTALL=load-only npx gitnexus analyze
+
+# Slow network: give extension downloads more time
+GITNEXUS_LBUG_EXTENSION_INSTALL_TIMEOUT_MS=30000 npx gitnexus analyze
+```
+
 ### Analysis runs out of memory

 For very large repositories:
@@ -323,6 +343,21 @@ npx gitnexus analyze

 Values above **32768 KB (32 MB)** are clamped to the tree-sitter parser ceiling; invalid values fall back to the 512 KB default with a one-time warning. When an override is active, `analyze` prints the effective threshold in its startup banner (e.g. `GITNEXUS_MAX_FILE_SIZE: effective threshold 2048KB (default 512KB)`).

+### Analyze reports a worker timeout
+
+Worker parse timeouts are recoverable. GitNexus retries stalled worker jobs with backoff, splits large jobs to isolate slow files, and falls back to the sequential parser when needed. If a large repository needs more time per worker job, use either:
+
+```bash
+# CLI flag, in seconds
+npx gitnexus analyze --worker-timeout 60
+
+# Environment variable, in milliseconds
+export GITNEXUS_WORKER_SUB_BATCH_TIMEOUT_MS=60000
+npx gitnexus analyze
+```
+
+For repositories with very large source files, `GITNEXUS_WORKER_SUB_BATCH_MAX_BYTES` controls the worker job byte budget. The default is **8388608 bytes (8 MB)**.
+
 ## Privacy

 - All processing happens locally on your machine
@@ -31,11 +31,25 @@ function readInput() {
 * Find the .gitnexus directory by walking up from startDir.
 * Returns the path to .gitnexus/ or null if not found.
 */
-function findGitNexusDir(startDir) {
-  let dir = startDir || process.cwd();
+function isGlobalRegistryDir(candidate) {
+  if (fs.existsSync(path.join(candidate, 'meta.json'))) return false;
+  return (
+    fs.existsSync(path.join(candidate, 'registry.json')) ||
+    fs.existsSync(path.join(candidate, 'repos'))
+  );
+}
+
+/**
+ * Walk up from `startDir` looking for a non-registry `.gitnexus/` folder.
+ * Returns the path to `.gitnexus/` or null if not found within 5 levels.
+ */
+function walkForGitNexusDir(startDir) {
+  let dir = startDir;
  for (let i = 0; i < 5; i++) {
    const candidate = path.join(dir, '.gitnexus');
-    if (fs.existsSync(candidate)) return candidate;
+    if (fs.existsSync(candidate)) {
+      if (!isGlobalRegistryDir(candidate)) return candidate;
+    }
    const parent = path.dirname(dir);
    if (parent === dir) break;
    dir = parent;
@@ -43,6 +57,51 @@ function findGitNexusDir(startDir) {
  return null;
 }

+/**
+ * Resolve the canonical (main) worktree root for `cwd`, when `cwd` is inside
+ * any git working tree — including a *linked* worktree created via
+ * `git worktree add`. Linked worktrees never contain `.gitnexus/`, so the
+ * upward walk from cwd alone misses the index. Returns null when `cwd` is
+ * not inside a git repo or `git` is not available.
+ *
+ * Implementation: `git rev-parse --git-common-dir` resolves to the canonical
+ * `.git/` directory (or `.git/worktrees/...` parent) that is shared across
+ * all linked worktrees. The canonical repo root is its parent directory.
+ */
+function findCanonicalRepoRoot(cwd) {
+  try {
+    const result = spawnSync('git', ['rev-parse', '--path-format=absolute', '--git-common-dir'], {
+      encoding: 'utf-8',
+      timeout: 2000,
+      cwd,
+      stdio: ['pipe', 'pipe', 'pipe'],
+    });
+    if (result.error || result.status !== 0) return null;
+    const commonDir = (result.stdout || '').trim();
+    if (!commonDir || !path.isAbsolute(commonDir)) return null;
+    return path.dirname(commonDir);
+  } catch {
+    return null;
+  }
+}
+
+function findGitNexusDir(startDir) {
+  const cwd = startDir || process.cwd();
+
+  // Fast path: the cwd is inside the canonical repo (most common case).
+  const fromCwd = walkForGitNexusDir(cwd);
+  if (fromCwd) return fromCwd;
+
+  // Fallback: cwd may be inside a linked git worktree whose `.gitnexus/`
+  // only lives in the canonical repo root. Resolve the shared git dir
+  // and retry from there.
+  const canonicalRoot = findCanonicalRepoRoot(cwd);
+  if (canonicalRoot && canonicalRoot !== cwd) {
+    return walkForGitNexusDir(canonicalRoot);
+  }
+  return null;
+}
+
 /**
 * Extract search pattern from tool input.
 */
@@ -1,23 +1,24 @@
 {
  "name": "gitnexus",
-  "version": "1.6.3",
+  "version": "1.6.4",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "gitnexus",
-      "version": "1.6.3",
+      "version": "1.6.4",
      "hasInstallScript": true,
      "license": "PolyForm-Noncommercial-1.0.0",
      "dependencies": {
        "@huggingface/transformers": "^4.1.0",
-        "@ladybugdb/core": "^0.15.2",
+        "@ladybugdb/core": "^0.16.1",
        "@modelcontextprotocol/sdk": "^1.0.0",
        "@scarf/scarf": "^1.4.0",
        "cli-progress": "^3.12.0",
        "commander": "^14.0.3",
        "cors": "^2.8.5",
        "express": "^4.19.2",
+        "express-rate-limit": "^8.4.1",
        "glob": "^13.0.6",
        "graphology": "^0.26.0",
        "graphology-indices": "^0.17.0",
@@ -29,10 +30,12 @@
        "mnemonist": "^0.40.3",
        "onnxruntime-node": "^1.24.0",
        "pandemonium": "^2.4.0",
+        "pino": "^10.3.1",
+        "pino-pretty": "^13.1.3",
        "tree-sitter": "^0.21.1",
-        "tree-sitter-c": "0.23.2",
+        "tree-sitter-c": "0.21.4",
        "tree-sitter-c-sharp": "0.23.1",
-        "tree-sitter-cpp": "^0.23.4",
+        "tree-sitter-cpp": "0.23.2",
        "tree-sitter-go": "^0.23.0",
        "tree-sitter-java": "^0.23.5",
        "tree-sitter-javascript": "^0.23.0",
@@ -65,17 +68,17 @@
      "optionalDependencies": {
        "node-addon-api": "^8.0.0",
        "node-gyp-build": "^4.8.0",
-        "tree-sitter-dart": "git+https://github.com/UserNobody14/tree-sitter-dart.git#80e23c07b64494f7e21090bb3450223ef0b192f4",
+        "tree-sitter-dart": "file:./vendor/tree-sitter-dart",
        "tree-sitter-kotlin": "^0.3.8",
        "tree-sitter-proto": "file:./vendor/tree-sitter-proto",
-        "tree-sitter-swift": "^0.6.0"
+        "tree-sitter-swift": "file:./vendor/tree-sitter-swift"
      }
    },
    "../gitnexus-shared": {
      "version": "1.0.0",
      "dev": true,
      "devDependencies": {
-        "typescript": "^6.0.2"
+        "typescript": "^6.0.3"
      }
    },
    "node_modules/@babel/helper-string-parser": {
@@ -614,9 +617,9 @@
      }
    },
    "node_modules/@hono/node-server": {
-      "version": "1.19.11",
-      "resolved": "https://registry.npmjs.org/@hono/node-server/-/node-server-1.19.11.tgz",
-      "integrity": "sha512-dr8/3zEaB+p0D2n/IUrlPF1HZm586qgJNXK1a9fhg/PzdtkK7Ksd5l312tJX2yBuALqDYBlG20QEbayqPyxn+g==",
+      "version": "1.19.14",
+      "resolved": "https://registry.npmjs.org/@hono/node-server/-/node-server-1.19.14.tgz",
+      "integrity": "sha512-GwtvgtXxnWsucXvbQXkRgqksiH2Qed37H9xHZocE5sA3N8O8O8/8FA3uclQXxXVzc9XBZuEOMK7+r02FmSpHtw==",
      "license": "MIT",
      "engines": {
        "node": ">=18.14.1"
@@ -1159,9 +1162,9 @@
      }
    },
    "node_modules/@ladybugdb/core": {
-      "version": "0.15.3",
-      "resolved": "https://registry.npmjs.org/@ladybugdb/core/-/core-0.15.3.tgz",
-      "integrity": "sha512-Xa8VmWhMTvTCWmApnqm9FJtyxxV+CiMCokl1p9vEfXNuBz3SWXWGDmHlzKikswtQbUe9tTV3J9MxPdVFVE6/yg==",
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core/-/core-0.16.1.tgz",
+      "integrity": "sha512-qwuEcR8CVMKb6tNDaHtq7Ux8hT/XbPC0db+vwutX6JxNAejyx7YomHKPSy9XAKURhYK8mezZe3UN8rf+xpHOjQ==",
      "hasInstallScript": true,
      "license": "MIT",
      "dependencies": {
@@ -1169,16 +1172,17 @@
        "node-addon-api": "^6.0.0"
      },
      "optionalDependencies": {
-        "@ladybugdb/core-darwin-arm64": "0.15.3",
-        "@ladybugdb/core-linux-arm64": "0.15.3",
-        "@ladybugdb/core-linux-x64": "0.15.3",
-        "@ladybugdb/core-win32-x64": "0.15.3"
+        "@ladybugdb/core-darwin-arm64": "0.16.1",
+        "@ladybugdb/core-darwin-x64": "0.16.1",
+        "@ladybugdb/core-linux-arm64": "0.16.1",
+        "@ladybugdb/core-linux-x64": "0.16.1",
+        "@ladybugdb/core-win32-x64": "0.16.1"
      }
    },
    "node_modules/@ladybugdb/core-darwin-arm64": {
-      "version": "0.15.3",
-      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-arm64/-/core-darwin-arm64-0.15.3.tgz",
-      "integrity": "sha512-+bqAb3wbbmxPSeNQjbVd6Ek5K8GbHr1KlDr09YkNqZ7XWhKqWxbs097xAG9bynLcZh9oxok2PGCoK4w5YHs11w==",
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-arm64/-/core-darwin-arm64-0.16.1.tgz",
+      "integrity": "sha512-Nl+Cf70rD+HaC9IBHv+oeUwqX9plghXD7PN9tyMzMohRVPvcGEbqWPB6YcdJa8rR7qRqCCbmaNMDen5wg4rY2w==",
      "cpu": [
        "arm64"
      ],
@@ -1188,10 +1192,23 @@
        "darwin"
      ]
    },
+    "node_modules/@ladybugdb/core-darwin-x64": {
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-x64/-/core-darwin-x64-0.16.1.tgz",
+      "integrity": "sha512-4eAjfimAAQRSmDfUUkGrl9OhefxcW1ziA9tl0eljBlGoUseE7dL02+RSqjGohYMcQ+lzuHAq1QWb0XRlMA8YTQ==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
    "node_modules/@ladybugdb/core-linux-arm64": {
-      "version": "0.15.3",
-      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-arm64/-/core-linux-arm64-0.15.3.tgz",
-      "integrity": "sha512-Z8Ur6YbC5y6pgtKh/7b1/xdeRHy69sGhsoVJm1tc9xp9Zrar6G2A71bEdjOdDJ/mDRt6RtY0zdhUgIgQXYQtbQ==",
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-arm64/-/core-linux-arm64-0.16.1.tgz",
+      "integrity": "sha512-zkctksev+hsPFrNxHHdq4lYK5OWdLhWfRdQzjzkgDyaHayHU6yCL2fgD6uPGQ8TRQ6/2DxMErb4p3FzGW85Ubw==",
      "cpu": [
        "arm64"
      ],
@@ -1202,9 +1219,9 @@
      ]
    },
    "node_modules/@ladybugdb/core-linux-x64": {
-      "version": "0.15.3",
-      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-x64/-/core-linux-x64-0.15.3.tgz",
-      "integrity": "sha512-DT9xBc91tuxzjRu1dJ3xGt/K/uR1Q8bX5+8tCtj66UbVIVvp1RWAAE9phq7eahcF/3zBuFRonkxW/tTyQdQIlQ==",
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-x64/-/core-linux-x64-0.16.1.tgz",
+      "integrity": "sha512-5rAb9T5vif8WKhHwhobosu2/aiOwJkWb/ViybvUc5GFKunKl8VI6RmZQVeufT9zUzRktUwrxBrxblCxsnamXJw==",
      "cpu": [
        "x64"
      ],
@@ -1215,9 +1232,9 @@
      ]
    },
    "node_modules/@ladybugdb/core-win32-x64": {
-      "version": "0.15.3",
-      "resolved": "https://registry.npmjs.org/@ladybugdb/core-win32-x64/-/core-win32-x64-0.15.3.tgz",
-      "integrity": "sha512-ymHC8nHGIT7M9aditBQFIystxW+WoqvI3xklz22BHaFpU9CrTNtdU20K6cuRZvqEA2//Edu7kMoP9OwLkIleCg==",
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-win32-x64/-/core-win32-x64-0.16.1.tgz",
+      "integrity": "sha512-ShOUTrIuZKQ63J95tcRJxKf1cvg8yi2FSYx9kMTSercc1FdQZPV+zxUN0myMq3MTWOl7xDxsVMmdp/t80O29UQ==",
      "cpu": [
        "x64"
      ],
@@ -1564,6 +1581,12 @@
        "url": "https://github.com/sponsors/Boshen"
      }
    },
+    "node_modules/@pinojs/redact": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@pinojs/redact/-/redact-0.4.0.tgz",
+      "integrity": "sha512-k2ENnmBugE/rzQfEcdWHcCY+/FM3VLzH9cYEsbdsoqrvzAKRhUZeRNhAZvB8OitQJ1TBed3yqWtdjzS6wJKBwg==",
+      "license": "MIT"
+    },
    "node_modules/@protobufjs/aspromise": {
      "version": "1.1.2",
      "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
@@ -2042,9 +2065,9 @@
      "license": "MIT"
    },
    "node_modules/@types/node": {
-      "version": "25.6.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
-      "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
+      "version": "25.6.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.2.tgz",
+      "integrity": "sha512-sokuT28dxf9JT5Kady1fsXOvI4HVpjZa95NKT5y9PNTIrs2AsobR4GFAA90ZG8M+nxVRLysCXsVj6eGC7Vbrlw==",
      "license": "MIT",
      "dependencies": {
        "undici-types": "~7.19.0"
@@ -2365,6 +2388,15 @@
        "js-tokens": "^10.0.0"
      }
    },
+    "node_modules/atomic-sleep": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/atomic-sleep/-/atomic-sleep-1.0.0.tgz",
+      "integrity": "sha512-kNOjDqAh7px0XWNI+4QbzoiR/nTkHAWNud2uvnJquD1/x5a7EQZMJT0AczqK0Qn67oY/TTQ1LbUKajZpp3I9tQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
    "node_modules/balanced-match": {
      "version": "4.0.4",
      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
@@ -2428,13 +2460,6 @@
        "node": ">= 0.8"
      }
    },
-    "node_modules/boolean": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/boolean/-/boolean-3.2.0.tgz",
-      "integrity": "sha512-d0II/GO9uf9lfUHH2BQsjxzRJZBdsjgsBiW4BvhWk/3qoKwQFjIDVN19PfX8F2D/r9PCMTtLWjYVCFrpeYUzsw==",
-      "deprecated": "Package no longer supported. Contact Support at https://www.npmjs.com/support for more info.",
-      "license": "MIT"
-    },
    "node_modules/brace-expansion": {
      "version": "5.0.5",
      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
@@ -2571,6 +2596,12 @@
      "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
      "license": "MIT"
    },
+    "node_modules/colorette": {
+      "version": "2.0.20",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-2.0.20.tgz",
+      "integrity": "sha512-IfEDxwoWIjkeXL1eXcDiow4UbKjhLdq6/EuSVR9GMN7KVH3r9gQ83e73hsz1Nd1T3ijd5xv1wcWRYO+D6kCI2w==",
+      "license": "MIT"
+    },
    "node_modules/commander": {
      "version": "14.0.3",
      "resolved": "https://registry.npmjs.org/commander/-/commander-14.0.3.tgz",
@@ -2675,6 +2706,15 @@
        "node": ">= 8"
      }
    },
+    "node_modules/dateformat": {
+      "version": "4.6.3",
+      "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-4.6.3.tgz",
+      "integrity": "sha512-2P0p0pFGzHS5EMnhdxQi7aJN+iMheud0UhG4dlE1DLAlvL8JHjJJTX/CSm4JXwV0Ka5nGk3zC5mcb5bUQUxxMA==",
+      "license": "MIT",
+      "engines": {
+        "node": "*"
+      }
+    },
    "node_modules/debug": {
      "version": "4.4.3",
      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -2763,12 +2803,6 @@
        "node": ">=8"
      }
    },
-    "node_modules/detect-node": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/detect-node/-/detect-node-2.1.0.tgz",
-      "integrity": "sha512-T0NIuQpnTvFDATNuHN5roPwSBG83rFsuO+MXXH9/3N1eFbn4wcPjttvjMLEPWJ0RGUYgQE7cGgS3tNxbqCGM7g==",
-      "license": "MIT"
-    },
    "node_modules/dunder-proto": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/dunder-proto/-/dunder-proto-1.0.1.tgz",
@@ -2804,6 +2838,15 @@
        "node": ">= 0.8"
      }
    },
+    "node_modules/end-of-stream": {
+      "version": "1.4.5",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.5.tgz",
+      "integrity": "sha512-ooEGc6HP26xXq/N+GCGOT0JKCLDGrq2bQUZrQ7gyrJiZANJ/8YDTxTpQBXGMn+WbIQXNVpyWymm7KYVICQnyOg==",
+      "license": "MIT",
+      "dependencies": {
+        "once": "^1.4.0"
+      }
+    },
    "node_modules/es-define-property": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.1.tgz",
@@ -2841,12 +2884,6 @@
        "node": ">= 0.4"
      }
    },
-    "node_modules/es6-error": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/es6-error/-/es6-error-4.1.1.tgz",
-      "integrity": "sha512-Um/+FxMr9CISWh0bi5Zv0iOD+4cFh5qLeks1qhAopKVAJw3drgKbKySikp7wGhDL0HPeaja0P5ULZrxLkniUVg==",
-      "license": "MIT"
-    },
    "node_modules/esbuild": {
      "version": "0.27.4",
      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.27.4.tgz",
@@ -3022,12 +3059,12 @@
      }
    },
    "node_modules/express-rate-limit": {
-      "version": "8.3.1",
-      "resolved": "https://registry.npmjs.org/express-rate-limit/-/express-rate-limit-8.3.1.tgz",
-      "integrity": "sha512-D1dKN+cmyPWuvB+G2SREQDzPY1agpBIcTa9sJxOPMCNeH3gwzhqJRDWCXW3gg0y//+LQ/8j52JbMROWyrKdMdw==",
+      "version": "8.5.1",
+      "resolved": "https://registry.npmjs.org/express-rate-limit/-/express-rate-limit-8.5.1.tgz",
+      "integrity": "sha512-5O6KYmyJEpuPJV5hNTXKbAHWRqrzyu+OI3vUnSd2kXFubIVpG7ezpgxQy76Zo5GQZtrQBg86hF+CM/NX+cioiQ==",
      "license": "MIT",
      "dependencies": {
-        "ip-address": "10.1.0"
+        "ip-address": "^10.2.0"
      },
      "engines": {
        "node": ">= 16"
@@ -3054,16 +3091,28 @@
      "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==",
      "license": "MIT"
    },
+    "node_modules/fast-copy": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/fast-copy/-/fast-copy-4.0.3.tgz",
+      "integrity": "sha512-58apWr0GUiDFM8+3afrO6eYwJBn9ZAhDOzG3L+/9llab/haCARS2UIfffmOurYLwbgDRs8n0rfr6qAAPEAuAQw==",
+      "license": "MIT"
+    },
    "node_modules/fast-deep-equal": {
      "version": "3.1.3",
      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
      "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
      "license": "MIT"
    },
+    "node_modules/fast-safe-stringify": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.1.1.tgz",
+      "integrity": "sha512-W+KJc2dmILlPplD/H4K9l9LcAHAfPtP6BY84uVLXQ6Evcz9Lcg33Y2z1IVblT6xdY54PXYVHEv+0Wpq8Io6zkA==",
+      "license": "MIT"
+    },
    "node_modules/fast-uri": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.0.tgz",
-      "integrity": "sha512-iPeeDKJSWf4IEOasVVrknXpaBV0IApz/gp7S2bb7Z4Lljbl2MGJRqInZiUrQwV16cpzw/D3S5j5Julj/gT52AA==",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.2.tgz",
+      "integrity": "sha512-rVjf7ArG3LTk+FS6Yw81V1DLuZl1bRbNrev6Tmd/9RaroeeRRJhAt7jg/6YFxbvAQXUCavSoZhPPj6oOx+5KjQ==",
      "funding": [
        {
          "type": "github",
@@ -3270,17 +3319,15 @@
      }
    },
    "node_modules/global-agent": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/global-agent/-/global-agent-3.0.0.tgz",
-      "integrity": "sha512-PT6XReJ+D07JvGoxQMkT6qji/jVNfX/h364XHZOWeRzy64sSFr+xJ5OX7LI3b4MPQzdL4H8Y8M0xzPpsVMwA8Q==",
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/global-agent/-/global-agent-4.1.3.tgz",
+      "integrity": "sha512-KUJEViiuFT3I97t+GYMikLPJS2Lfo/S2F+DQuBWzuzaMPnvt5yyZePzArx36fBzpGTxZjIpDbXLeySLgh+k76g==",
      "license": "BSD-3-Clause",
      "dependencies": {
-        "boolean": "^3.0.1",
-        "es6-error": "^4.1.1",
-        "matcher": "^3.0.0",
-        "roarr": "^2.15.3",
-        "semver": "^7.3.2",
-        "serialize-error": "^7.0.1"
+        "globalthis": "^1.0.2",
+        "matcher": "^4.0.0",
+        "semver": "^7.3.5",
+        "serialize-error": "^8.1.0"
      },
      "engines": {
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@@ -3422,10 +3469,16 @@
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-    "node_modules/sprintf-js": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.3.tgz",
-      "integrity": "sha512-Oo+0REFV59/rz3gfJNKQiBlwfHaSESl1pcGyABQsnnIfWOFt6JNj5gCog2U6MLZ//IGYD+nA8nI+mTShREReaA==",
-      "license": "BSD-3-Clause"
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 10.x"
+      }
    },
    "node_modules/stackback": {
      "version": "0.0.2",
@@ -4963,6 +5159,18 @@
        "node": ">=18"
      }
    },
+    "node_modules/thread-stream": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/thread-stream/-/thread-stream-4.0.0.tgz",
+      "integrity": "sha512-4iMVL6HAINXWf1ZKZjIPcz5wYaOdPhtO8ATvZ+Xqp3BTdaqtAwQkNmKORqcIo5YkQqGXq5cwfswDwMqqQNrpJA==",
+      "license": "MIT",
+      "dependencies": {
+        "real-require": "^0.2.0"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
    "node_modules/tinybench": {
      "version": "2.9.0",
      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
@@ -5028,20 +5236,20 @@
      }
    },
    "node_modules/tree-sitter-c": {
-      "version": "0.23.2",
-      "resolved": "https://registry.npmjs.org/tree-sitter-c/-/tree-sitter-c-0.23.2.tgz",
-      "integrity": "sha512-9kADOx31AF94DHcrsMGW0zM/2LS6v7wFkPHPVm7RQU+vYVVZMKZ2FJ9e99pm5feqsAcjUzB9CarqDLgRT1Fe/w==",
+      "version": "0.21.4",
+      "resolved": "https://registry.npmjs.org/tree-sitter-c/-/tree-sitter-c-0.21.4.tgz",
+      "integrity": "sha512-IahxFIhXiY15SUlrt2upBiKSBGdOaE1fjKLK1Ik5zxqGHf6T1rvr3IJrovbsE5sXhypx7Hnmf50gshsppaIihA==",
      "hasInstallScript": true,
      "license": "MIT",
      "dependencies": {
-        "node-addon-api": "^8.2.2",
-        "node-gyp-build": "^4.8.2"
+        "node-addon-api": "^8.0.0",
+        "node-gyp-build": "^4.8.1"
      },
      "peerDependencies": {
-        "tree-sitter": "^0.21.1"
+        "tree-sitter": "^0.21.0"
      },
      "peerDependenciesMeta": {
-        "tree-sitter": {
+        "tree_sitter": {
          "optional": true
        }
      }
@@ -5065,30 +5273,15 @@
        }
      }
    },
-    "node_modules/tree-sitter-cli": {
-      "version": "0.23.2",
-      "resolved": "https://registry.npmjs.org/tree-sitter-cli/-/tree-sitter-cli-0.23.2.tgz",
-      "integrity": "sha512-kPPXprOqREX+C/FgUp2Qpt9jd0vSwn+hOgjzVv/7hapdoWpa+VeWId53rf4oNNd29ikheF12BYtGD/W90feMbA==",
-      "hasInstallScript": true,
-      "license": "MIT",
-      "optional": true,
-      "bin": {
-        "tree-sitter": "cli.js"
-      },
-      "engines": {
-        "node": ">=12.0.0"
-      }
-    },
    "node_modules/tree-sitter-cpp": {
-      "version": "0.23.4",
-      "resolved": "https://registry.npmjs.org/tree-sitter-cpp/-/tree-sitter-cpp-0.23.4.tgz",
-      "integrity": "sha512-qR5qUDyhZ5jJ6V8/umiBxokRbe89bCGmcq/dk94wI4kN86qfdV8k0GHIUEKaqWgcu42wKal5E97LKpLeVW8sKw==",
+      "version": "0.23.2",
+      "resolved": "https://registry.npmjs.org/tree-sitter-cpp/-/tree-sitter-cpp-0.23.2.tgz",
+      "integrity": "sha512-GTa5Dx1O9ihzW70LvaUviTclh+wlBDRz6opR9Ij4NQIFmq/joeZ/k65UbLV4nLidR7xZ9eNNGT/SonCqAmjGVg==",
      "hasInstallScript": true,
      "license": "MIT",
      "dependencies": {
        "node-addon-api": "^8.2.1",
-        "node-gyp-build": "^4.8.2",
-        "tree-sitter-c": "^0.23.1"
+        "node-gyp-build": "^4.8.2"
      },
      "peerDependencies": {
        "tree-sitter": "^0.21.1"
@@ -5100,31 +5293,8 @@
      }
    },
    "node_modules/tree-sitter-dart": {
-      "version": "1.0.0",
-      "resolved": "git+ssh://git@github.com/UserNobody14/tree-sitter-dart.git#80e23c07b64494f7e21090bb3450223ef0b192f4",
-      "integrity": "sha512-Bs/1wAOIJ2akPEXlE/XVpuES19Oo3NqoSJRJ/0N2r38qAd9nTXdqmaGHQ44/JXnA6QHcbgD2YzCCc4wUc98cyQ==",
-      "hasInstallScript": true,
-      "license": "ISC",
-      "optional": true,
-      "dependencies": {
-        "node-addon-api": "^7.1.0",
-        "node-gyp-build": "^4.8.0"
-      },
-      "peerDependencies": {
-        "tree-sitter": "^0.21.0"
-      },
-      "peerDependenciesMeta": {
-        "tree_sitter": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/tree-sitter-dart/node_modules/node-addon-api": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-7.1.1.tgz",
-      "integrity": "sha512-5m3bsyrjFWE1xf7nz7YXdN4udnVtXK6/Yfgn5qnahL6bCkf2yKt4k3nuTKAtT4r3IG8JNR2ncsIMdZuAzJjHQQ==",
-      "license": "MIT",
-      "optional": true
+      "resolved": "vendor/tree-sitter-dart",
+      "link": true
    },
    "node_modules/tree-sitter-go": {
      "version": "0.23.4",
@@ -5291,49 +5461,8 @@
      }
    },
    "node_modules/tree-sitter-swift": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/tree-sitter-swift/-/tree-sitter-swift-0.6.0.tgz",
-      "integrity": "sha512-9vOJZes4/UFjBr4COHtp6ZHVuZYwfChSQbpneXQog04dAstfx5px3ybVX2cN+ylvLqsvVpmXLpidxxgF2rDQ7A==",
-      "hasInstallScript": true,
-      "license": "MIT",
-      "optional": true,
-      "dependencies": {
-        "node-addon-api": "^8.0.0",
-        "node-gyp-build": "^4.8.0",
-        "tree-sitter-cli": "^0.23",
-        "which": "2.0.2"
-      },
-      "peerDependencies": {
-        "tree-sitter": "^0.21.1"
-      },
-      "peerDependenciesMeta": {
-        "tree_sitter": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/tree-sitter-swift/node_modules/isexe": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
-      "integrity": "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==",
-      "license": "ISC",
-      "optional": true
-    },
-    "node_modules/tree-sitter-swift/node_modules/which": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
-      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
-      "license": "ISC",
-      "optional": true,
-      "dependencies": {
-        "isexe": "^2.0.0"
-      },
-      "bin": {
-        "node-which": "bin/node-which"
-      },
-      "engines": {
-        "node": ">= 8"
-      }
+      "resolved": "vendor/tree-sitter-swift",
+      "link": true
    },
    "node_modules/tree-sitter-typescript": {
      "version": "0.23.2",
@@ -5383,9 +5512,9 @@
      }
    },
    "node_modules/type-fest": {
-      "version": "0.13.1",
-      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.13.1.tgz",
-      "integrity": "sha512-34R7HTnG0XIJcBSn5XhDd7nNFPRcXYRZrBB2O2jdKqYODldSzBAqzsWoZYYvduky73toYS/ESqxPvkDf/F0XMg==",
+      "version": "0.20.2",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.20.2.tgz",
+      "integrity": "sha512-Ne+eE4r0/iWnpAxD852z3A+N0Bt5RN//NjJwRd2VFHEmrywxf5vsZlh4R6lixl6B+wz/8d+maTSAkN1FIkI3LQ==",
      "license": "(MIT OR CC0-1.0)",
      "engines": {
        "node": ">=10"
@@ -5768,6 +5897,19 @@
        "zod": "^3.25.28 || ^4"
      }
    },
+    "vendor/tree-sitter-dart": {
+      "version": "1.0.0",
+      "license": "ISC",
+      "optional": true,
+      "peerDependencies": {
+        "tree-sitter": "^0.21.0"
+      },
+      "peerDependenciesMeta": {
+        "tree_sitter": {
+          "optional": true
+        }
+      }
+    },
    "vendor/tree-sitter-proto": {
      "version": "0.4.1",
      "license": "MIT",
@@ -5775,6 +5917,24 @@
      "peerDependencies": {
        "tree-sitter": ">=0.21.0"
      }
+    },
+    "vendor/tree-sitter-swift": {
+      "version": "0.7.1",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "node-addon-api": "^8.0.0",
+        "node-gyp-build": "^4.8.0"
+      },
+      "peerDependencies": {
+        "tree-sitter": "^0.21.1 || ^0.22.1"
+      },
+      "peerDependenciesMeta": {
+        "tree-sitter": {
+          "optional": true
+        }
+      }
    }
  }
 }
@@ -1,6 +1,6 @@
 {
  "name": "gitnexus",
-  "version": "1.6.3",
+  "version": "1.6.4",
  "description": "Graph-powered code intelligence for AI agents. Index any codebase, query via MCP or CLI.",
  "author": "Abhigyan Patwari",
  "license": "PolyForm-Noncommercial-1.0.0",
@@ -35,7 +35,8 @@
    "hooks",
    "scripts",
    "skills",
-    "vendor"
+    "vendor",
+    "web"
  ],
  "scripts": {
    "build": "node scripts/build.js",
@@ -43,22 +44,24 @@
    "dev": "tsx watch src/cli/index.ts",
    "test": "vitest run",
    "test:unit": "vitest run test/unit",
+    "pretest:integration": "node scripts/build.js",
    "test:integration": "vitest run test/integration",
    "test:watch": "vitest",
    "test:coverage": "vitest run --coverage",
-    "postinstall": "node scripts/patch-tree-sitter-swift.cjs && node scripts/build-tree-sitter-proto.cjs",
+    "postinstall": "node scripts/build-tree-sitter-dart.cjs && node scripts/build-tree-sitter-proto.cjs",
    "prepare": "node scripts/build.js",
    "prepack": "node scripts/build.js"
  },
  "dependencies": {
    "@huggingface/transformers": "^4.1.0",
-    "@ladybugdb/core": "^0.15.2",
+    "@ladybugdb/core": "^0.16.1",
    "@modelcontextprotocol/sdk": "^1.0.0",
    "@scarf/scarf": "^1.4.0",
    "cli-progress": "^3.12.0",
    "commander": "^14.0.3",
    "cors": "^2.8.5",
    "express": "^4.19.2",
+    "express-rate-limit": "^8.4.1",
    "glob": "^13.0.6",
    "graphology": "^0.26.0",
    "graphology-indices": "^0.17.0",
@@ -70,10 +73,12 @@
    "mnemonist": "^0.40.3",
    "onnxruntime-node": "^1.24.0",
    "pandemonium": "^2.4.0",
+    "pino": "^10.3.1",
+    "pino-pretty": "^13.1.3",
    "tree-sitter": "^0.21.1",
-    "tree-sitter-c": "0.23.2",
+    "tree-sitter-c": "0.21.4",
    "tree-sitter-c-sharp": "0.23.1",
-    "tree-sitter-cpp": "^0.23.4",
+    "tree-sitter-cpp": "0.23.2",
    "tree-sitter-go": "^0.23.0",
    "tree-sitter-java": "^0.23.5",
    "tree-sitter-javascript": "^0.23.0",
@@ -87,10 +92,10 @@
  "optionalDependencies": {
    "node-addon-api": "^8.0.0",
    "node-gyp-build": "^4.8.0",
-    "tree-sitter-dart": "git+https://github.com/UserNobody14/tree-sitter-dart.git#80e23c07b64494f7e21090bb3450223ef0b192f4",
+    "tree-sitter-dart": "file:./vendor/tree-sitter-dart",
    "tree-sitter-kotlin": "^0.3.8",
    "tree-sitter-proto": "file:./vendor/tree-sitter-proto",
-    "tree-sitter-swift": "^0.6.0"
+    "tree-sitter-swift": "file:./vendor/tree-sitter-swift"
  },
  "devDependencies": {
    "@types/cli-progress": "^3.11.6",
@@ -108,10 +113,9 @@
  "overrides": {
    "@huggingface/transformers": {
      "onnxruntime-node": "$onnxruntime-node"
-    },
-    "tree-sitter-c": "0.23.2"
+    }
  },
  "engines": {
-    "node": ">=20.0.0"
+    "node": ">=22.0.0"
  }
 }
@@ -0,0 +1,53 @@
+#!/usr/bin/env node
+const fs = require('fs');
+const path = require('path');
+const { execSync } = require('child_process');
+
+// Opt-out: skip the native rebuild entirely. Dart parsing becomes
+// unavailable but `npm install gitnexus` finishes much faster on machines
+// without a C++ toolchain. Strict `=== '1'` only — '=true', '=yes', '=0'
+// (read as a string), and any other value all fall through to the rebuild.
+if (process.env.GITNEXUS_SKIP_OPTIONAL_GRAMMARS === '1') {
+  console.warn(
+    '[tree-sitter-dart] Skipping build (GITNEXUS_SKIP_OPTIONAL_GRAMMARS=1). Dart parsing will be unavailable until reinstalled without the env var.',
+  );
+  process.exit(0);
+}
+
+const dartDir = path.join(__dirname, '..', 'node_modules', 'tree-sitter-dart');
+const bindingGyp = path.join(dartDir, 'binding.gyp');
+const bindingNode = path.join(dartDir, 'build', 'Release', 'tree_sitter_dart_binding.node');
+
+try {
+  if (!fs.existsSync(bindingGyp) || fs.existsSync(bindingNode)) {
+    process.exit(0);
+  }
+
+  try {
+    require.resolve('node-addon-api');
+    require.resolve('node-gyp-build');
+  } catch (resolveErr) {
+    console.warn(
+      '[tree-sitter-dart] Skipping build: hoisted build deps not resolvable (%s).',
+      resolveErr.message,
+    );
+    console.warn(
+      '[tree-sitter-dart] Dart parsing will be unavailable. Install without --no-optional and with scripts enabled to build.',
+    );
+    process.exit(0);
+  }
+
+  console.log('[tree-sitter-dart] Building native binding...');
+  execSync('npx node-gyp rebuild', {
+    cwd: dartDir,
+    stdio: 'pipe',
+    timeout: 180000,
+  });
+  console.log('[tree-sitter-dart] Native binding built successfully');
+} catch (err) {
+  console.warn('[tree-sitter-dart] Could not build native binding:', err.message);
+  console.warn(
+    '[tree-sitter-dart] Dart parsing will be unavailable. Non-Dart functionality is unaffected.',
+  );
+  process.exit(0);
+}
@@ -26,7 +26,7 @@
 *   `node_modules/tree-sitter-proto/build/Release/tree_sitter_proto_binding.node`
 *   — under npm-managed territory, safe on upgrade.
 *
- *   Mirrors scripts/patch-tree-sitter-swift.cjs. Best-effort: if any
+ *   Mirrors the tree-sitter-dart build helper. Best-effort: if any
 *   precondition fails (optional dep absent, no toolchain, --ignore-scripts),
 *   warn and exit 0 so gitnexus install still succeeds.
 */
@@ -34,6 +34,17 @@ const fs = require('fs');
 const path = require('path');
 const { execSync } = require('child_process');

+// Opt-out: skip the native rebuild entirely. Proto parsing becomes
+// unavailable but `npm install gitnexus` finishes much faster on machines
+// without a C++ toolchain. Strict `=== '1'` only — '=true', '=yes', '=0'
+// (read as a string), and any other value all fall through to the rebuild.
+if (process.env.GITNEXUS_SKIP_OPTIONAL_GRAMMARS === '1') {
+  console.warn(
+    '[tree-sitter-proto] Skipping build (GITNEXUS_SKIP_OPTIONAL_GRAMMARS=1). Proto parsing will be unavailable until reinstalled without the env var.',
+  );
+  process.exit(0);
+}
+
 const protoDir = path.join(__dirname, '..', 'node_modules', 'tree-sitter-proto');
 const bindingGyp = path.join(protoDir, 'binding.gyp');
 const bindingNode = path.join(protoDir, 'build', 'Release', 'tree_sitter_proto_binding.node');
@@ -21,11 +21,11 @@ const SHARED_DEST = path.join(DIST, '_shared');

 // ── 1. Build gitnexus-shared ───────────────────────────────────────
 console.log('[build] compiling gitnexus-shared…');
-execSync('npx tsc', { cwd: SHARED_ROOT, stdio: 'inherit' });
+execSync('npx tsc', { cwd: SHARED_ROOT, stdio: 'inherit', timeout: 120_000 });

 // ── 2. Build gitnexus ──────────────────────────────────────────────
 console.log('[build] compiling gitnexus…');
-execSync('npx tsc', { cwd: ROOT, stdio: 'inherit' });
+execSync('npx tsc', { cwd: ROOT, stdio: 'inherit', timeout: 120_000 });

 // ── 3. Copy shared dist ────────────────────────────────────────────
 console.log('[build] copying shared module into dist/_shared…');
@@ -70,4 +70,24 @@ walk(DIST, ['.js', '.d.ts'], rewriteFile);
 const cliEntry = path.join(DIST, 'cli', 'index.js');
 if (fs.existsSync(cliEntry)) fs.chmodSync(cliEntry, 0o755);

+// ── 6. Build & copy web UI ──────────────────────────────────────────
+const WEB_ROOT = path.resolve(ROOT, '..', 'gitnexus-web');
+const WEB_DEST = path.join(DIST, '..', 'web');
+
+if (fs.existsSync(path.join(WEB_ROOT, 'package.json'))) {
+  console.log('[build] building gitnexus-web…');
+  if (!fs.existsSync(path.join(WEB_ROOT, 'node_modules'))) {
+    console.log('[build] installing gitnexus-web dependencies…');
+    execSync('npm ci', { cwd: WEB_ROOT, stdio: 'inherit', timeout: 120_000 });
+  }
+  execSync('npm run build', { cwd: WEB_ROOT, stdio: 'inherit', timeout: 120_000 });
+
+  // Copy dist → gitnexus/web/ (shipped in the npm package)
+  fs.rmSync(WEB_DEST, { recursive: true, force: true });
+  fs.cpSync(path.join(WEB_ROOT, 'dist'), WEB_DEST, { recursive: true });
+  console.log('[build] copied web UI → gitnexus/web/');
+} else {
+  console.log('[build] skipping web UI (gitnexus-web not found)');
+}
+
 console.log(`[build] done — rewrote ${rewritten} files.`);
@@ -0,0 +1,48 @@
+#!/usr/bin/env node
+import fs from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+import { createRequire } from 'node:module';
+
+const EXTENSION_NAME_PATTERN = /^[A-Za-z][A-Za-z0-9_]*$/;
+
+function parseLbugMaxDbSize(raw) {
+  const parsed = raw ? Number(raw) : NaN;
+  if (!Number.isFinite(parsed) || parsed <= 0) {
+    throw new Error(`Invalid LadybugDB max DB size for extension installer: ${raw ?? '<missing>'}`);
+  }
+  return Math.floor(parsed);
+}
+
+async function installDuckDbExtension(extensionName) {
+  if (!extensionName || !EXTENSION_NAME_PATTERN.test(extensionName)) {
+    throw new Error(`Invalid DuckDB extension name: ${extensionName ?? '<missing>'}`);
+  }
+
+  const require = createRequire(import.meta.url);
+  const lbugModule = require('@ladybugdb/core');
+  const lbug = lbugModule.default ?? lbugModule;
+  const lbugMaxDbSize = parseLbugMaxDbSize(
+    process.argv[3] ?? process.env.GITNEXUS_LBUG_MAX_DB_SIZE,
+  );
+
+  const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gitnexus-ext-install-'));
+  const dbPath = path.join(tmpDir, 'install.lbug');
+  let db;
+  let conn;
+
+  try {
+    db = new lbug.Database(dbPath, 0, false, false, lbugMaxDbSize);
+    conn = new lbug.Connection(db);
+    await conn.query(`INSTALL ${extensionName}`);
+  } finally {
+    if (conn) await conn.close().catch(() => {});
+    if (db) await db.close().catch(() => {});
+    await fs.rm(tmpDir, { recursive: true, force: true }).catch(() => {});
+  }
+}
+
+installDuckDbExtension(process.argv[2] ?? process.env.GITNEXUS_LBUG_EXTENSION_NAME).catch((err) => {
+  console.error(err instanceof Error ? (err.stack ?? err.message) : String(err));
+  process.exitCode = 1;
+});
@@ -1,78 +0,0 @@
-#!/usr/bin/env node
-/**
- * WORKAROUND: tree-sitter-swift@0.6.0 binding.gyp build failure
- *
- * Background:
- *   tree-sitter-swift@0.6.0's binding.gyp contains an "actions" array that
- *   invokes `tree-sitter generate` to regenerate parser.c from grammar.js.
- *   This is intended for grammar developers, but the published npm package
- *   already ships pre-generated parser files (parser.c, scanner.c), so the
- *   actions are unnecessary for consumers. Since consumers don't have
- *   tree-sitter-cli installed, the actions always fail during `npm install`.
- *
- * Why we can't just upgrade:
- *   tree-sitter-swift@0.7.1 fixes this (removes postinstall, ships prebuilds),
- *   but it requires tree-sitter@^0.22.1. The upstream project pins tree-sitter
- *   to ^0.21.0 and all other grammar packages depend on that version.
- *   Upgrading tree-sitter would be a separate breaking change.
- *
- * How this workaround works:
- *   1. tree-sitter-swift's own postinstall fails (npm warns but continues)
- *   2. This script runs as gitnexus's postinstall
- *   3. It removes the "actions" array from binding.gyp
- *   4. It rebuilds the native binding with the cleaned binding.gyp
- *
- * TODO: Remove this script when tree-sitter is upgraded to ^0.22.x,
- *       which allows using tree-sitter-swift@0.7.1+ directly.
- */
-const fs = require('fs');
-const path = require('path');
-const { execSync } = require('child_process');
-
-const swiftDir = path.join(__dirname, '..', 'node_modules', 'tree-sitter-swift');
-const bindingPath = path.join(swiftDir, 'binding.gyp');
-
-try {
-  if (!fs.existsSync(bindingPath)) {
-    process.exit(0);
-  }
-
-  const content = fs.readFileSync(bindingPath, 'utf8');
-  let needsRebuild = false;
-
-  if (content.includes('"actions"')) {
-    // Strip Python-style comments (#) and trailing commas before JSON parsing
-    const cleaned = content
-      .replace(/#[^\n]*/g, '') // Remove # comments
-      .replace(/,(\s*[\]}])/g, '$1'); // Remove trailing commas before ] or }
-    const gyp = JSON.parse(cleaned);
-
-    if (gyp.targets && gyp.targets[0] && gyp.targets[0].actions) {
-      delete gyp.targets[0].actions;
-      fs.writeFileSync(bindingPath, JSON.stringify(gyp, null, 2) + '\n');
-      console.log('[tree-sitter-swift] Patched binding.gyp (removed actions array)');
-      needsRebuild = true;
-    }
-  }
-
-  // Check if native binding exists
-  const bindingNode = path.join(swiftDir, 'build', 'Release', 'tree_sitter_swift_binding.node');
-  if (!fs.existsSync(bindingNode)) {
-    needsRebuild = true;
-  }
-
-  if (needsRebuild) {
-    console.log('[tree-sitter-swift] Rebuilding native binding...');
-    execSync('npx node-gyp rebuild', {
-      cwd: swiftDir,
-      stdio: 'pipe',
-      timeout: 120000,
-    });
-    console.log('[tree-sitter-swift] Native binding built successfully');
-  }
-} catch (err) {
-  console.warn('[tree-sitter-swift] Could not build native binding:', err.message);
-  console.warn(
-    '[tree-sitter-swift] You may need to manually run: cd node_modules/tree-sitter-swift && npx node-gyp rebuild',
-  );
-}
@@ -23,7 +23,7 @@ Run from the project root. This parses all source files, builds the knowledge gr
 | `--embeddings` | Enable embedding generation for semantic search (off by default) |
 | `--drop-embeddings` | Drop existing embeddings on rebuild. By default, an `analyze` without `--embeddings` preserves them. |

-**When to run:** First time in a project, after major code changes, or when `gitnexus://repo/{name}/context` reports the index is stale. In Claude Code, a PostToolUse hook runs `analyze` automatically after `git commit` and `git merge`, preserving embeddings if previously generated.
+**When to run:** First time in a project, after major code changes, or when `gitnexus://repo/{name}/context` reports the index is stale. In Claude Code, a PostToolUse hook detects staleness after `git commit` and `git merge` and notifies the agent to run `analyze` — the hook does not run analyze itself, to avoid blocking the agent for up to 120s and risking KuzuDB corruption on timeout.

 ### status — Check index freshness

@@ -10,6 +10,7 @@ import fs from 'fs/promises';
 import path from 'path';
 import { fileURLToPath } from 'url';
 import { type GeneratedSkillInfo } from './skill-gen.js';
+import { logger } from '../core/logger.js';

 // ESM equivalent of __dirname
 const __filename = fileURLToPath(import.meta.url);
@@ -293,7 +294,7 @@ Use GitNexus tools to accomplish this task.
      installedSkills.push(skill.name);
    } catch (err) {
      // Skip on error, don't fail the whole process
-      console.warn(`Warning: Could not install skill ${skill.name}:`, err);
+      logger.warn({ err }, `Warning: Could not install skill ${skill.name}:`);
    }
  }

@@ -17,11 +17,55 @@ import {
  getStoragePaths,
  getGlobalRegistryPath,
  RegistryNameCollisionError,
+  AnalysisNotFinalizedError,
+  assertAnalysisFinalized,
 } from '../storage/repo-manager.js';
 import { getGitRoot, hasGitDir } from '../storage/git.js';
 import { runFullAnalysis } from '../core/run-analyze.js';
 import { getMaxFileSizeBannerMessage } from '../core/ingestion/utils/max-file-size.js';
+import { warnMissingOptionalGrammars } from './optional-grammars.js';
+import { glob } from 'glob';
 import fs from 'fs/promises';
+import { cliError } from './cli-message.js';
+import { isHfDownloadFailure } from '../core/embeddings/hf-env.js';
+
+// Capture stderr.write at module load BEFORE anything (LadybugDB native
+// init, progress bar, console redirection) can monkey-patch it. The
+// fatal handlers below MUST reach the user even when the analyze path
+// has redirected console.* through the progress bar's bar.log() — the
+// previous behaviour silently swallowed stack traces and made #1169
+// indistinguishable from a no-op success on Windows.
+const realStderrWrite = process.stderr.write.bind(process.stderr);
+
+const writeFatalToStderr = (label: string, err: unknown): void => {
+  const isErr = err instanceof Error;
+  const message = isErr ? err.message : String(err);
+  realStderrWrite(`\n  ${label}: ${message}\n`);
+  if (isErr && err.stack) realStderrWrite(`${err.stack}\n`);
+};
+
+let fatalHandlersInstalled = false;
+
+/**
+ * Install one-shot `unhandledRejection` / `uncaughtException` handlers
+ * that surface the failure to the real stderr (bypassing any console
+ * redirection installed by the progress bar) and force a non-zero exit
+ * code. Without these, an async error escaping {@link analyzeCommand}'s
+ * try/catch was reported as exit 0 with no diagnostic — the silent
+ * failure mode tracked in #1169.
+ */
+const installFatalHandlers = (): void => {
+  if (fatalHandlersInstalled) return;
+  fatalHandlersInstalled = true;
+  process.on('unhandledRejection', (err) => {
+    writeFatalToStderr('Analysis failed (unhandled rejection)', err);
+    process.exit(1);
+  });
+  process.on('uncaughtException', (err) => {
+    writeFatalToStderr('Analysis failed (uncaught exception)', err);
+    process.exit(1);
+  });
+};

 const HEAP_MB = 8192;
 const HEAP_FLAG = `--max-old-space-size=${HEAP_MB}`;
@@ -55,7 +99,14 @@ function ensureHeap(): boolean {

 export interface AnalyzeOptions {
  force?: boolean;
-  embeddings?: boolean;
+  /**
+   * Embedding generation toggle. Commander parses `--embeddings [limit]` as:
+   *   - `undefined` when the flag is omitted
+   *   - `true` when passed without an argument (use default 50K node cap)
+   *   - a string when passed with an argument (`--embeddings 0` disables the
+   *     cap, `--embeddings <n>` uses `<n>` as the cap)
+   */
+  embeddings?: boolean | string;
  /**
   * Explicitly drop existing embeddings on rebuild instead of preserving
   * them. Without this flag, a routine `analyze` keeps any embeddings
@@ -91,11 +142,22 @@ export interface AnalyzeOptions {
   * `GITNEXUS_MAX_FILE_SIZE` for the rest of the pipeline.
   */
  maxFileSize?: string;
+  /** Override worker sub-batch idle timeout in seconds. */
+  workerTimeout?: string;
+  embeddingThreads?: string;
+  embeddingBatchSize?: string;
+  embeddingSubBatchSize?: string;
+  embeddingDevice?: string;
 }

 export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOptions) => {
  if (ensureHeap()) return;

+  // Install fatal handlers immediately after re-exec resolution so any
+  // async error that escapes the try/catch below (#1169) surfaces with
+  // a stack trace and a non-zero exit code instead of a silent exit 0.
+  installFatalHandlers();
+
  if (options?.verbose) {
    process.env.GITNEXUS_VERBOSE = '1';
  }
@@ -104,26 +166,101 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    process.env.GITNEXUS_MAX_FILE_SIZE = options.maxFileSize;
  }

+  if (options?.workerTimeout) {
+    const workerTimeoutSeconds = Number(options.workerTimeout);
+    if (!Number.isFinite(workerTimeoutSeconds) || workerTimeoutSeconds < 1) {
+      cliError('  --worker-timeout must be at least 1 second.\n');
+      process.exitCode = 1;
+      return;
+    }
+    process.env.GITNEXUS_WORKER_SUB_BATCH_TIMEOUT_MS = String(
+      Math.round(workerTimeoutSeconds * 1000),
+    );
+  }
+
+  // Parse `--embeddings [limit]`: `true` → default cap, string → numeric cap
+  // (0 disables the cap entirely). Validated up here so failures match the
+  // sibling-validation pattern (exit before bar.start() — otherwise
+  // process.exit() leaves the progress bar's hidden cursor uncleared).
+  let embeddingsNodeLimit: number | undefined;
+  if (typeof options?.embeddings === 'string') {
+    const parsed = Number(options.embeddings);
+    if (!Number.isInteger(parsed) || parsed < 0) {
+      cliError(
+        `  --embeddings expects a non-negative integer (got "${options.embeddings}"). ` +
+          `Pass 0 to disable the safety cap, or omit the value to keep the default.\n`,
+      );
+      process.exitCode = 1;
+      return;
+    }
+    embeddingsNodeLimit = parsed;
+  }
+  const embeddingsEnabled = !!options?.embeddings;
+
+  const setPositiveEnv = (
+    optionName: string,
+    envName: string,
+    value: string | undefined,
+  ): boolean => {
+    if (value === undefined) return true;
+    const parsed = Number(value);
+    if (!Number.isInteger(parsed) || parsed <= 0) {
+      cliError(`  ${optionName} must be a positive integer.\n`);
+      process.exitCode = 1;
+      return false;
+    }
+    process.env[envName] = String(parsed);
+    return true;
+  };
+
+  if (
+    !setPositiveEnv(
+      '--embedding-threads',
+      'GITNEXUS_EMBEDDING_THREADS',
+      options?.embeddingThreads,
+    ) ||
+    !setPositiveEnv(
+      '--embedding-batch-size',
+      'GITNEXUS_EMBEDDING_BATCH_SIZE',
+      options?.embeddingBatchSize,
+    ) ||
+    !setPositiveEnv(
+      '--embedding-sub-batch-size',
+      'GITNEXUS_EMBEDDING_SUB_BATCH_SIZE',
+      options?.embeddingSubBatchSize,
+    )
+  ) {
+    return;
+  }
+
+  if (options?.embeddingDevice) {
+    const allowed = new Set(['auto', 'cpu', 'dml', 'cuda', 'wasm']);
+    if (!allowed.has(options.embeddingDevice)) {
+      cliError('  --embedding-device must be one of: auto, cpu, dml, cuda, wasm.\n');
+      process.exitCode = 1;
+      return;
+    }
+    process.env.GITNEXUS_EMBEDDING_DEVICE = options.embeddingDevice;
+  }
+
  console.log('\n  GitNexus Analyzer\n');

  let repoPath: string;
  if (inputPath) {
    repoPath = path.resolve(inputPath);
+  } else if (options?.skipGit) {
+    // --skip-git: treat cwd as the index root, do not walk up to a parent git repo.
+    repoPath = path.resolve(process.cwd());
  } else {
    const gitRoot = getGitRoot(process.cwd());
    if (!gitRoot) {
-      if (!options?.skipGit) {
-        console.log(
-          '  Not inside a git repository.\n  Tip: pass --skip-git to index any folder without a .git directory.\n',
-        );
-        process.exitCode = 1;
-        return;
-      }
-      // --skip-git: fall back to cwd as the root
-      repoPath = path.resolve(process.cwd());
-    } else {
-      repoPath = gitRoot;
+      console.log(
+        '  Not inside a git repository.\n  Tip: pass --skip-git to index any folder without a .git directory.\n',
+      );
+      process.exitCode = 1;
+      return;
    }
+    repoPath = gitRoot;
  }

  const repoHasGit = hasGitDir(repoPath);
@@ -140,6 +277,30 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    );
  }

+  // If the target repo contains files an optional grammar would parse but
+  // that grammar's native binding is absent, warn before analysis so users
+  // learn why those files end up unparsed instead of silently getting a
+  // degraded index.
+  try {
+    const matches = await glob(['**/*.dart', '**/*.proto'], {
+      cwd: repoPath,
+      ignore: ['**/node_modules/**', '**/.git/**', '**/dist/**', '**/build/**'],
+      dot: false,
+      nodir: true,
+      absolute: false,
+    });
+    if (matches.length > 0) {
+      const present = new Set<string>();
+      for (const m of matches) {
+        const ext = path.extname(m).toLowerCase();
+        if (ext) present.add(ext);
+      }
+      warnMissingOptionalGrammars({ context: 'analyze', relevantExtensions: present });
+    }
+  } catch {
+    // Best-effort warning \u2014 never block analyze on the precheck.
+  }
+
  // KuzuDB migration cleanup is handled by runFullAnalysis internally.
  // Note: --skills is handled after runFullAnalysis using the returned pipelineResult.

@@ -171,7 +332,9 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption

  bar.start(100, 0, { phase: 'Initializing...' });

-  // Graceful SIGINT handling
+  // Graceful SIGINT handling. Pino's default destination is `sync: false`
+  // (buffered) — flush before exit so in-flight records reach stderr.
+  // See `gitnexus/src/core/logger.ts:flushLoggerSync`.
  let aborted = false;
  const sigintHandler = () => {
    if (aborted) process.exit(1);
@@ -180,13 +343,23 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    console.log('\n  Interrupted — cleaning up...');
    closeLbug()
      .catch(() => {})
-      .finally(() => process.exit(130));
+      .finally(async () => {
+        const { flushLoggerSync } = await import('../core/logger.js');
+        flushLoggerSync();
+        process.exit(130);
+      });
  };
  process.on('SIGINT', sigintHandler);

-  // Route console output through bar.log() to prevent progress bar corruption
+  // Route console output through bar.log() to prevent progress bar corruption.
+  // This is a deliberate UI pattern (not a logging concern): analyze runs a
+  // long-lived progress bar on stdout; any concurrent console.* write would
+  // overwrite the bar mid-render. We capture originals, swap to barLog for
+  // the lifetime of the run, and restore on completion/error/SIGINT.
  const origLog = console.log.bind(console);
+  // eslint-disable-next-line no-console -- intentional console-routing for progress bar UX
  const origWarn = console.warn.bind(console);
+  // eslint-disable-next-line no-console -- intentional console-routing for progress bar UX
  const origError = console.error.bind(console);
  let barCurrentValue = 0;
  const barLog = (...args: any[]) => {
@@ -195,7 +368,9 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    bar.update(barCurrentValue);
  };
  console.log = barLog;
+  // eslint-disable-next-line no-console -- intentional console-routing for progress bar UX
  console.warn = barLog;
+  // eslint-disable-next-line no-console -- intentional console-routing for progress bar UX
  console.error = barLog;

  // Track elapsed time per phase
@@ -231,7 +406,8 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
        // needs a fresh pipelineResult. Has no bearing on the registry
        // collision guard (see allowDuplicateName below).
        force: options?.force || options?.skills,
-        embeddings: options?.embeddings,
+        embeddings: embeddingsEnabled,
+        embeddingsNodeLimit,
        dropEmbeddings: options?.dropEmbeddings,
        skipGit: options?.skipGit,
        skipAgentsMd: options?.skipAgentsMd,
@@ -252,10 +428,17 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    );

    if (result.alreadyUpToDate) {
+      // Even the fast path must prove the repo is discoverable. A prior
+      // run can write meta.json and then fail before registerRepo(); in
+      // that half-finalized state, runFullAnalysis returns alreadyUpToDate
+      // on the next invocation unless we check the registry here too.
+      await assertAnalysisFinalized(repoPath);
      clearInterval(elapsedTimer);
      process.removeListener('SIGINT', sigintHandler);
      console.log = origLog;
+      // eslint-disable-next-line no-console -- restoring after intentional progress-bar routing
      console.warn = origWarn;
+      // eslint-disable-next-line no-console -- restoring after intentional progress-bar routing
      console.error = origError;
      bar.stop();
      console.log('  Already up to date\n');
@@ -264,6 +447,15 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
      return;
    }

+    // Post-finalize invariant (#1169): runFullAnalysis nominally writes
+    // meta.json and registers the repo, but on Windows it has been
+    // observed to return successfully with neither artifact present
+    // (banner-only output, exit 0). Verify both before declaring
+    // success so the silent-finalize state surfaces with a non-zero
+    // exit code and an actionable error instead of being mistaken for
+    // a healthy index.
+    await assertAnalysisFinalized(repoPath);
+
    // Skill generation (CLI-only, uses pipeline result from analysis)
    if (options?.skills && result.pipelineResult) {
      updateBar(99, 'Generating skill files...');
@@ -319,7 +511,9 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    process.removeListener('SIGINT', sigintHandler);

    console.log = origLog;
+    // eslint-disable-next-line no-console -- restoring after intentional progress-bar routing
    console.warn = origWarn;
+    // eslint-disable-next-line no-console -- restoring after intentional progress-bar routing
    console.error = origError;

    bar.update(100, { phase: 'Done' });
@@ -344,7 +538,9 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    clearInterval(elapsedTimer);
    process.removeListener('SIGINT', sigintHandler);
    console.log = origLog;
+    // eslint-disable-next-line no-console -- restoring after intentional progress-bar routing
    console.warn = origWarn;
+    // eslint-disable-next-line no-console -- restoring after intentional progress-bar routing
    console.error = origError;
    bar.stop();

@@ -353,19 +549,61 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
    // Registry name-collision from --name (#829) — surface as an
    // actionable error rather than a generic stack-trace.
    if (err instanceof RegistryNameCollisionError) {
-      console.error(`\n  Registry name collision:\n`);
-      console.error(`    "${err.registryName}" is already used by "${err.existingPath}".\n`);
-      console.error(`  Options:`);
-      console.error(`    • Pick a different alias:  gitnexus analyze --name <alias>`);
-      console.error(
-        `    • Allow the duplicate:     gitnexus analyze --allow-duplicate-name  (leaves "-r ${err.registryName}" ambiguous)`,
+      cliError(
+        `\n  Registry name collision:\n` +
+          `    "${err.registryName}" is already used by "${err.existingPath}".\n\n` +
+          `  Options:\n` +
+          `    • Pick a different alias:  gitnexus analyze --name <alias>\n` +
+          `    • Allow the duplicate:     gitnexus analyze --allow-duplicate-name  (leaves "-r ${err.registryName}" ambiguous)\n`,
+        { registryName: err.registryName, existingPath: err.existingPath },
      );
-      console.error('');
      process.exitCode = 1;
      return;
    }

-    console.error(`\n  Analysis failed: ${msg}\n`);
+    // Finalize invariant failure (#1169) — keep the rich actionable
+    // message intact and write through realStderrWrite so it can't be
+    // erased by a leftover bar refresh on slow terminals.
+    if (err instanceof AnalysisNotFinalizedError) {
+      writeFatalToStderr('Analysis did not finalize', err);
+      realStderrWrite(
+        `\n  Diagnostic checklist:\n` +
+          `    1. Re-run "gitnexus analyze" - transient native errors often clear on retry.\n` +
+          `    2. Inspect ${err.storagePath} - a leftover lbug.wal indicates an aborted write.\n` +
+          `    3. If the failure persists, run with NODE_OPTIONS="--max-old-space-size=8192 --trace-exit"\n` +
+          `       and attach the trace to the GitNexus issue tracker.\n\n`,
+      );
+      process.exitCode = 1;
+      return;
+    }
+
+    // HF download failure — show clean guidance without the raw stack trace.
+    // Checked before writeFatalToStderr so the user sees one focused message
+    // rather than a stack-trace dump followed by a second remediation block.
+    if (isHfDownloadFailure(msg) || msg.includes('Failed to download embedding model')) {
+      cliError(
+        `  The embedding model could not be downloaded.\n` +
+          `  huggingface.co may be unreachable from your network\n` +
+          `  (e.g. behind a corporate proxy or a regional firewall).\n` +
+          `  Suggestions:\n` +
+          `    1. Set HF_ENDPOINT to a mirror and retry:\n` +
+          `         HF_ENDPOINT=https://hf-mirror.com npx gitnexus analyze --embeddings\n` +
+          `         (Windows: set HF_ENDPOINT=https://hf-mirror.com && npx gitnexus analyze --embeddings)\n` +
+          `    2. Check your proxy / VPN settings.\n` +
+          `    3. Once downloaded the model is cached — future runs work offline.\n`,
+        { recoveryHint: 'hf-endpoint-unreachable' },
+      );
+      process.exitCode = 1;
+      return;
+    }
+
+    // Bypass the redirected console.error and write the full stack to
+    // the real stderr captured at module load. The redirected
+    // console.error wraps every line with `\\x1b[2K\\r` (ANSI clear-line)
+    // and forces a bar.update() afterwards, which on some Windows
+    // terminals visually erases the failure message — the canonical
+    // shape of the silent-exit symptom in #1169.
+    writeFatalToStderr('Analysis failed', err);

    // Provide helpful guidance for known failure modes
    if (
@@ -378,34 +616,40 @@ export const analyzeCommand = async (inputPath?: string, options?: AnalyzeOption
      msg.includes('heap out of memory') ||
      msg.includes('JavaScript heap')
    ) {
-      console.error('  This error typically occurs on very large repositories.');
-      console.error('  Suggestions:');
-      console.error('    1. Add large vendored/generated directories to .gitnexusignore');
-      console.error('    2. Increase Node.js heap: NODE_OPTIONS="--max-old-space-size=16384"');
-      console.error('    3. Increase stack size: NODE_OPTIONS="--stack-size=4096"');
-      console.error('');
+      cliError(
+        `  This error typically occurs on very large repositories.\n` +
+          `  Suggestions:\n` +
+          `    1. Add large vendored/generated directories to .gitnexusignore\n` +
+          `    2. Increase Node.js heap: NODE_OPTIONS="--max-old-space-size=16384"\n` +
+          `    3. Increase stack size: NODE_OPTIONS="--stack-size=4096"\n`,
+        { recoveryHint: 'large-repo' },
+      );
    } else if (msg.includes('ERESOLVE') || msg.includes('Could not resolve dependency')) {
      // Note: the original arborist "Cannot destructure property 'package' of
      // 'node.target'" crash happens inside npm *before* gitnexus code runs,
      // so it can't be caught here.  This branch handles dependency-resolution
      // errors that surface at runtime (e.g. dynamic require failures).
-      console.error('  This looks like an npm dependency resolution issue.');
-      console.error('  Suggestions:');
-      console.error('    1. Clear the npm cache:    npm cache clean --force');
-      console.error('    2. Update npm:             npm install -g npm@latest');
-      console.error('    3. Reinstall gitnexus:     npm install -g gitnexus@latest');
-      console.error('    4. Or try npx directly:    npx gitnexus@latest analyze');
-      console.error('');
+      cliError(
+        `  This looks like an npm dependency resolution issue.\n` +
+          `  Suggestions:\n` +
+          `    1. Clear the npm cache:    npm cache clean --force\n` +
+          `    2. Update npm:             npm install -g npm@latest\n` +
+          `    3. Reinstall gitnexus:     npm install -g gitnexus@latest\n` +
+          `    4. Or try npx directly:    npx gitnexus@latest analyze\n`,
+        { recoveryHint: 'npm-resolution' },
+      );
    } else if (
      msg.includes('MODULE_NOT_FOUND') ||
      msg.includes('Cannot find module') ||
      msg.includes('ERR_MODULE_NOT_FOUND')
    ) {
-      console.error('  A required module could not be loaded. The installation may be corrupt.');
-      console.error('  Suggestions:');
-      console.error('    1. Reinstall:   npm install -g gitnexus@latest');
-      console.error('    2. Clear cache: npm cache clean --force && npx gitnexus@latest analyze');
-      console.error('');
+      cliError(
+        `  A required module could not be loaded. The installation may be corrupt.\n` +
+          `  Suggestions:\n` +
+          `    1. Reinstall:   npm install -g gitnexus@latest\n` +
+          `    2. Clear cache: npm cache clean --force && npx gitnexus@latest analyze\n`,
+        { recoveryHint: 'module-not-found' },
+      );
    }

    process.exitCode = 1;
@@ -6,6 +6,7 @@
 */

 import fs from 'fs/promises';
+import { logger } from '../core/logger.js';
 import {
  findRepo,
  unregisterRepo,
@@ -45,7 +46,7 @@ export const cleanCommand = async (options?: { force?: boolean; all?: boolean })
        assertSafeStoragePath(entry);
      } catch (err) {
        if (err instanceof UnsafeStoragePathError) {
-          console.error(`Refusing to clean ${entry.name}: ${err.message}`);
+          logger.error(`Refusing to clean ${entry.name}: ${err.message}`);
          continue;
        }
        throw err;
@@ -56,7 +57,7 @@ export const cleanCommand = async (options?: { force?: boolean; all?: boolean })
        await unregisterRepo(entry.path);
        console.log(`Deleted: ${entry.name} (${entry.storagePath})`);
      } catch (err) {
-        console.error(`Failed to delete ${entry.name}:`, err);
+        logger.error({ err }, `Failed to delete ${entry.name}:`);
      }
    }
    return;
@@ -85,6 +86,6 @@ export const cleanCommand = async (options?: { force?: boolean; all?: boolean })
    await unregisterRepo(repo.repoPath);
    console.log(`Deleted: ${repo.storagePath}`);
  } catch (err) {
-    console.error('Failed to delete:', err);
+    logger.error({ err }, 'Failed to delete:');
  }
 };
@@ -0,0 +1,65 @@
+/**
+ * CLI message helpers — for user-facing banners, error guidance, and
+ * recovery hints emitted by `gitnexus` subcommands.
+ *
+ * These functions write **plain text** directly to `process.stderr` AND
+ * tee a structured pino record through the singleton `logger`. Plain text
+ * preserves the human-readable contract for users running `gitnexus`
+ * interactively, redirecting to a file, or piping to `cat`/`grep`. The
+ * structured tee keeps log aggregators happy.
+ *
+ * **Use these for:**
+ *   - User-facing banners ("Server listening on http://...:N")
+ *   - Validation errors ("--worker-timeout must be at least 1 second")
+ *   - Recovery hints ("Suggestions: 1. Clear the npm cache, 2. ...")
+ *   - One-line user notices ("No indexed repositories found.")
+ *
+ * **Do NOT use these for:**
+ *   - Internal diagnostics (worker progress, retry counts, telemetry)
+ *     — use `logger.info`/`warn`/`error` directly. Internal logs only
+ *     need structured fields, not double-output to stderr.
+ *   - High-volume hot paths — every `cliMessage` call writes twice (raw
+ *     + structured). Acceptable for user-facing messages, wasteful for
+ *     ingestion pipeline events.
+ *
+ * Design note: stderr is the right channel even for non-error messages
+ * because GitNexus CLI tools (`query`, `cypher`, `impact`) emit JSON
+ * data on stdout for piping (`gitnexus query | jq`). User banners on
+ * stdout would corrupt that pipeline.
+ */
+import { logger } from '../core/logger.js';
+
+function writeStderr(msg: string): void {
+  // Direct write — bypassing `console.*` so it cannot be intercepted by
+  // progress-bar redirection (see `cli/analyze.ts:barLog`) or other
+  // routing. The structured tee below still goes through the logger so
+  // log aggregation works either way.
+  process.stderr.write(msg.endsWith('\n') ? msg : msg + '\n');
+}
+
+/**
+ * User-facing informational message. Use for banners, listening URLs,
+ * and any message the user expects to read in plain text.
+ */
+export function cliInfo(msg: string, fields?: Record<string, unknown>): void {
+  writeStderr(msg);
+  logger.info(fields ?? {}, msg);
+}
+
+/**
+ * User-facing warning. Operator-actionable but non-fatal — `cliWarn`
+ * indicates the command can still proceed in some form.
+ */
+export function cliWarn(msg: string, fields?: Record<string, unknown>): void {
+  writeStderr(msg);
+  logger.warn(fields ?? {}, msg);
+}
+
+/**
+ * User-facing error. Indicates the command cannot proceed; usually
+ * paired with a non-zero exit code at the call site.
+ */
+export function cliError(msg: string, fields?: Record<string, unknown>): void {
+  writeStderr(msg);
+  logger.error(fields ?? {}, msg);
+}
@@ -0,0 +1,32 @@
+import { getRuntimeCapabilities, getRuntimeFingerprint } from '../core/platform/capabilities.js';
+import { resolveEmbeddingConfig } from '../core/embeddings/config.js';
+import { isHttpMode } from '../core/embeddings/http-client.js';
+
+export const doctorCommand = async () => {
+  const fingerprint = getRuntimeFingerprint();
+  const capabilities = getRuntimeCapabilities();
+  const embeddingConfig = resolveEmbeddingConfig();
+
+  console.log('GitNexus Doctor\n');
+  console.log('Runtime');
+  console.log(`  OS:        ${fingerprint.platform}/${fingerprint.arch}`);
+  console.log(`  Node:      ${fingerprint.node}`);
+  console.log(`  GitNexus:  ${fingerprint.gitnexus}`);
+  console.log(`  LadybugDB: ${fingerprint.ladybugdb ?? 'unknown'}`);
+  console.log(`  ONNX:      ${fingerprint.onnxruntime ?? 'unknown'}`);
+  console.log('');
+  console.log('Capabilities');
+  console.log(`  Graph store:     ${capabilities.graph}`);
+  console.log(`  Full-text search:${capabilities.fts.padStart(10)}`);
+  console.log(`  VECTOR index:    ${capabilities.vector}`);
+  console.log(`  Semantic mode:   ${capabilities.semanticMode}`);
+  console.log(`  Exact scan limit:${String(capabilities.exactScanLimit).padStart(9)} chunks`);
+  if (capabilities.reason) console.log(`  Note:            ${capabilities.reason}`);
+  console.log('');
+  console.log('Embeddings');
+  console.log(`  Backend:   ${isHttpMode() ? 'http' : 'local'}`);
+  console.log(`  Device:    ${embeddingConfig.device}`);
+  console.log(`  Threads:   ${embeddingConfig.threads}`);
+  console.log(`  Batch:     ${embeddingConfig.batchSize} nodes`);
+  console.log(`  Sub-batch: ${embeddingConfig.subBatchSize} chunks`);
+};
@@ -27,6 +27,8 @@
 import http from 'http';
 import { writeSync } from 'node:fs';
 import { LocalBackend } from '../mcp/local/local-backend.js';
+import { logger } from '../core/logger.js';
+import { cliInfo, cliWarn } from './cli-message.js';

 export interface EvalServerOptions {
  port?: string;
@@ -332,13 +334,19 @@ export async function evalServerCommand(options?: EvalServerOptions): Promise<vo
  const ok = await backend.init();

  if (!ok) {
-    console.error('GitNexus eval-server: No indexed repositories found. Run: gitnexus analyze');
+    // Operator-actionable but the server cannot start; warn-level so log
+    // aggregators don't trip error alerts on a configuration miss. Use
+    // cliWarn so the diagnostic reaches stderr synchronously before
+    // process.exit() — direct logger.warn would be lost to the buffered
+    // pino destination on hard exit (skips beforeExit flush).
+    cliWarn('GitNexus eval-server: No indexed repositories found. Run: gitnexus analyze');
    process.exit(1);
  }

  const repos = await backend.listRepos();
-  console.error(
-    `GitNexus eval-server: ${repos.length} repo(s) loaded: ${repos.map((r) => r.name).join(', ')}`,
+  logger.info(
+    { repoCount: repos.length, repos: repos.map((r) => r.name) },
+    'GitNexus eval-server: repos loaded',
  );

  let idleTimer: ReturnType<typeof setTimeout> | null = null;
@@ -347,7 +355,7 @@ export async function evalServerCommand(options?: EvalServerOptions): Promise<vo
    if (idleTimeoutSec <= 0) return;
    if (idleTimer) clearTimeout(idleTimer);
    idleTimer = setTimeout(async () => {
-      console.error('GitNexus eval-server: Idle timeout reached, shutting down');
+      logger.info({ idleTimeoutSec }, 'GitNexus eval-server: idle timeout reached, shutting down');
      await backend.disconnect();
      process.exit(0);
    }, idleTimeoutSec * 1000);
@@ -419,16 +427,34 @@ export async function evalServerCommand(options?: EvalServerOptions): Promise<vo
  });

  server.listen(port, '127.0.0.1', () => {
-    console.error(`GitNexus eval-server: listening on http://127.0.0.1:${port}`);
-    console.error(`  POST /tool/query    — search execution flows`);
-    console.error(`  POST /tool/context  — 360-degree symbol view`);
-    console.error(`  POST /tool/impact   — blast radius analysis`);
-    console.error(`  POST /tool/cypher   — raw Cypher query`);
-    console.error(`  GET  /health        — health check`);
-    console.error(`  POST /shutdown      — graceful shutdown`);
+    // Plain-text banner for the human watching stderr; structured record
+    // for log aggregation (split into two so the user sees a real banner
+    // not `{"level":30,"msg":"...","port":4747,"endpoints":[...]}`).
+    const bannerLines = [
+      `GitNexus eval-server: listening on http://127.0.0.1:${port}`,
+      `  POST /tool/query    — search execution flows`,
+      `  POST /tool/context  — 360-degree symbol view`,
+      `  POST /tool/impact   — blast radius analysis`,
+      `  POST /tool/cypher   — raw Cypher query`,
+      `  GET  /health        — health check`,
+      `  POST /shutdown      — graceful shutdown`,
+    ];
    if (idleTimeoutSec > 0) {
-      console.error(`  Auto-shutdown after ${idleTimeoutSec}s idle`);
+      bannerLines.push(`  Auto-shutdown after ${idleTimeoutSec}s idle`);
    }
+    cliInfo(bannerLines.join('\n'), {
+      port,
+      host: '127.0.0.1',
+      idleTimeoutSec: idleTimeoutSec > 0 ? idleTimeoutSec : undefined,
+      endpoints: [
+        'POST /tool/query',
+        'POST /tool/context',
+        'POST /tool/impact',
+        'POST /tool/cypher',
+        'GET  /health',
+        'POST /shutdown',
+      ],
+    });
    try {
      // Use fd 1 directly — LadybugDB captures process.stdout (#324)
      writeSync(1, `GITNEXUS_EVAL_SERVER_READY:${port}\n`);
@@ -440,7 +466,7 @@ export async function evalServerCommand(options?: EvalServerOptions): Promise<vo
  resetIdleTimer();

  const shutdown = async () => {
-    console.error('GitNexus eval-server: shutting down...');
+    logger.info('GitNexus eval-server: shutting down...');
    await backend.disconnect();
    server.close();
    process.exit(0);
@@ -1,6 +1,7 @@
 // gitnexus/src/cli/group.ts
 import { createRequire } from 'node:module';
 import type { Command } from 'commander';
+import { logger } from '../core/logger.js';

 const _require = createRequire(import.meta.url);
 const yaml = _require('js-yaml') as typeof import('js-yaml');
@@ -51,7 +52,7 @@ export function registerGroupCommands(program: Command): void {
      const groupDir = getGroupDir(getDefaultGitnexusDir(), groupName);
      const config = await loadGroupConfig(groupDir);
      if (!(repoPath in config.repos)) {
-        console.error(`Repo path "${repoPath}" not found in group "${groupName}"`);
+        logger.error(`Repo path "${repoPath}" not found in group "${groupName}"`);
        process.exitCode = 1;
        return;
      }
@@ -239,7 +240,7 @@ export function registerGroupCommands(program: Command): void {

        const raw = await backend.getGroupService().groupImpact(payload);
        if (raw && typeof raw === 'object' && 'error' in raw) {
-          console.error(String((raw as { error: string }).error));
+          logger.error(String((raw as { error: string }).error));
          process.exitCode = 1;
          return;
        }
@@ -333,7 +334,7 @@ export function registerGroupCommands(program: Command): void {
        });

        if (raw && typeof raw === 'object' && 'error' in raw) {
-          console.error(String((raw as { error: string }).error));
+          logger.error(String((raw as { error: string }).error));
          process.exitCode = 1;
          return;
        }
@@ -14,7 +14,7 @@ import fs from 'fs/promises';
 import {
  getStoragePaths,
  loadMeta,
-  addToGitignore,
+  ensureGitNexusIgnored,
  registerRepo,
 } from '../storage/repo-manager.js';
 import { getGitRoot, getRemoteUrl, isGitRepo } from '../storage/git.js';
@@ -115,7 +115,7 @@ export const indexCommand = async (inputPathParts?: string[], options?: IndexOpt
    meta.remoteUrl = getRemoteUrl(repoPath);
  }
  await registerRepo(repoPath, meta);
-  await addToGitignore(repoPath);
+  await ensureGitNexusIgnored(repoPath);

  const projectName = path.basename(repoPath);
  const { stats } = meta;
@@ -23,7 +23,11 @@ program
  .command('analyze [path]')
  .description('Index a repository (full analysis)')
  .option('-f, --force', 'Force full re-index even if up to date')
-  .option('--embeddings', 'Enable embedding generation for semantic search (off by default)')
+  .option(
+    '--embeddings [limit]',
+    'Enable embedding generation for semantic search (off by default). ' +
+      'Optional [limit] overrides the 50,000-node safety cap; pass 0 to disable the cap entirely.',
+  )
  .option(
    '--drop-embeddings',
    'Drop existing embeddings on rebuild. By default, an `analyze` without `--embeddings` ' +
@@ -32,7 +36,10 @@ program
  .option('--skills', 'Generate repo-specific skill files from detected communities')
  .option('--skip-agents-md', 'Skip updating the gitnexus section in AGENTS.md and CLAUDE.md')
  .option('--no-stats', 'Omit volatile file/symbol counts from AGENTS.md and CLAUDE.md')
-  .option('--skip-git', 'Index a folder without requiring a .git directory')
+  .option(
+    '--skip-git',
+    'Treat the provided path/cwd as the index root and skip parent git-root discovery',
+  )
  .option(
    '--name <alias>',
    'Register this repo under a custom name in ~/.gitnexus/registry.json ' +
@@ -48,11 +55,23 @@ program
    '--max-file-size <kb>',
    'Skip files larger than this (KB). Default: 512. Hard cap: 32768 (tree-sitter limit).',
  )
+  .option(
+    '--worker-timeout <seconds>',
+    'Worker sub-batch idle timeout before retry/fallback. Default: 30.',
+  )
+  .option('--embedding-threads <n>', 'Limit local ONNX embedding CPU threads')
+  .option('--embedding-batch-size <n>', 'Number of nodes per embedding batch')
+  .option('--embedding-sub-batch-size <n>', 'Number of chunks per embedding model call')
+  .option('--embedding-device <device>', 'Embedding device: auto, cpu, dml, cuda, or wasm')
  .addHelpText(
    'after',
    '\nEnvironment variables:\n' +
      '  GITNEXUS_NO_GITIGNORE=1   Skip .gitignore parsing (still reads .gitnexusignore)\n' +
      '  GITNEXUS_MAX_FILE_SIZE=N  Override large-file skip threshold (KB). Default 512, max 32768.\n' +
+      '  GITNEXUS_WORKER_SUB_BATCH_TIMEOUT_MS=N  Worker idle timeout in milliseconds. Default 30000.\n' +
+      '  GITNEXUS_WORKER_SUB_BATCH_MAX_BYTES=N  Worker job byte budget. Default 8388608.\n' +
+      '  GITNEXUS_EMBEDDING_THREADS=N  Limit local ONNX CPU threads for --embeddings.\n' +
+      '  GITNEXUS_SEMANTIC_EXACT_SCAN_LIMIT=N  Max embedding chunks for exact-scan fallback. Default 10000.\n' +
      '\nTip: `.gitnexusignore` supports `.gitignore`-style negation. Add e.g.\n' +
      '     `!__tests__/` to index a directory that is auto-filtered by default (#771).',
  )
@@ -89,6 +108,11 @@ program
  .description('Show index status for current repo')
  .action(createLazyAction(() => import('./status.js'), 'statusCommand'));

+program
+  .command('doctor')
+  .description('Show runtime platform capabilities and embedding configuration')
+  .action(createLazyAction(() => import('./doctor.js'), 'doctorCommand'));
+
 program
  .command('clean')
  .description('Delete GitNexus index for current repo')
@@ -136,6 +160,18 @@ program
  .description('Augment a search pattern with knowledge graph context (used by hooks)')
  .action(createLazyAction(() => import('./augment.js'), 'augmentCommand'));

+program
+  .command('publish [path]')
+  .description(
+    'Notify the understand-quickly registry that this repo has a fresh GitNexus index. ' +
+      'Opt-in: requires UNDERSTAND_QUICKLY_TOKEN (fine-grained PAT with ' +
+      '`Repository dispatches: write` on looptech-ai/understand-quickly). ' +
+      'No-op without the token. See https://github.com/looptech-ai/understand-quickly.',
+  )
+  .option('--id <owner/repo>', 'Override the registry id (defaults to the origin remote)')
+  .option('--skip-git', 'Treat cwd as the repo root and skip parent git-root discovery')
+  .action(createLazyAction(() => import('./publish.js'), 'publishCommand'));
+
 // ─── Direct Tool Commands (no MCP overhead) ────────────────────────
 // These invoke LocalBackend directly for use in eval, scripts, and CI.

@@ -4,23 +4,61 @@
 * Starts the MCP server in standalone mode.
 * Loads all indexed repos from the global registry.
 * No longer depends on cwd — works from any directory.
+ *
+ * IMPORTANT: this module's static-import closure is intentionally tiny
+ * (one chain: `mcp/stdio-context.js` → `mcp/stdio-capture.js`, which is a
+ * leaf with zero non-`node:` imports). All heavy backend modules
+ * (`startMCPServer`, `LocalBackend`, `warnMissingOptionalGrammars`) load
+ * via `await import(...)` AFTER `installGlobalStdoutSentinel()` runs.
+ *
+ * This closes the ESM-evaluation-order window where native init banners
+ * from `@ladybugdb/core` (or any future heavy import) could reach raw
+ * stdout before the sentinel exists. Codex's adversarial review on
+ * PR #1383 found that even with the sentinel-install call as the first
+ * statement of `mcpCommand`, ESM evaluates static imports of THIS module
+ * before the function body runs — so any native side effects during
+ * those imports happen before the sentinel can intercept them.
+ *
+ * If you find yourself adding a static `import` to this file, ask
+ * whether the imported module (or anything it transitively imports)
+ * touches `process.stdout` or loads a native binding at module init. If
+ * either is true, switch it to a dynamic `await import(...)` inside
+ * `mcpCommand` after the sentinel install. The regression test at
+ * `gitnexus/test/integration/mcp/import-closure.test.ts` enforces this.
 */

-import { startMCPServer } from '../mcp/server.js';
-import { LocalBackend } from '../mcp/local/local-backend.js';
+import { installGlobalStdoutSentinel } from '../mcp/stdio-context.js';

 export const mcpCommand = async () => {
-  // Prevent unhandled errors from crashing the MCP server process.
-  // LadybugDB lock conflicts and transient errors should degrade gracefully.
-  process.on('uncaughtException', (err) => {
-    console.error(`GitNexus MCP: uncaught exception — ${err.message}`);
-    // Process is in an undefined state after uncaughtException — exit after flushing
-    setTimeout(() => process.exit(1), 100);
-  });
-  process.on('unhandledRejection', (reason) => {
-    const msg = reason instanceof Error ? reason.message : String(reason);
-    console.error(`GitNexus MCP: unhandled rejection — ${msg}`);
-  });
+  // Install the global stdout sentinel as the very first thing — before
+  // ANY other module loads. The static-import closure above is leaf-only
+  // (stdio-context → stdio-capture, zero non-`node:` deps), so this is
+  // also the first chance any code in this process has to write to stdout.
+  installGlobalStdoutSentinel();
+
+  // uncaughtException/unhandledRejection handlers are owned by
+  // startMCPServer (gitnexus/src/mcp/server.ts) so the server's shutdown
+  // path runs cleanly with full stack traces. Registering duplicates here
+  // would only produce noisy double-logging on the same exception.
+
+  // Dynamically import heavy backend modules AND the pino logger AFTER
+  // the sentinel installs. The logger is dynamic-imported (rather than
+  // static) to preserve the leaf-only static-import closure documented at
+  // the top of this file — `core/logger.js` itself doesn't write to
+  // stdout at module init, but transitive deps (pino, pino-pretty, the
+  // worker-thread transport) could in theory, and the import-closure
+  // regression test enforces the leaf invariant.
+  const [{ startMCPServer }, { LocalBackend }, { logger }] = await Promise.all([
+    import('../mcp/server.js'),
+    import('../mcp/local/local-backend.js'),
+    import('../core/logger.js'),
+  ]);
+
+  // Missing-optional-grammar warnings are intentionally NOT emitted here.
+  // `gitnexus analyze` already warns at index time, filtered by the repo's
+  // actual extensions, and a repo can only be served by MCP after analyze
+  // has run. Repeating an unconditional warning at every MCP startup is
+  // pure noise for users whose indexed repos don't use Dart/Proto.

  // Initialize multi-repo backend from registry.
  // The server starts even with 0 repos — tools call refreshRepos() lazily,
@@ -30,12 +68,15 @@ export const mcpCommand = async () => {

  const repos = await backend.listRepos();
  if (repos.length === 0) {
-    console.error(
+    // Operator-actionable but the server still starts and serves; warn-level,
+    // not error. Tools will discover newly-analyzed repos via lazy refresh.
+    logger.warn(
      'GitNexus: No indexed repos yet. Run `gitnexus analyze` in a git repo — the server will pick it up automatically.',
    );
  } else {
-    console.error(
-      `GitNexus: MCP server starting with ${repos.length} repo(s): ${repos.map((r) => r.name).join(', ')}`,
+    logger.info(
+      { repoCount: repos.length, repos: repos.map((r) => r.name) },
+      'GitNexus: MCP server starting',
    );
  }

@@ -0,0 +1,114 @@
+/**
+ * Optional grammar availability check.
+ *
+ * tree-sitter-dart and tree-sitter-proto are optionalDependencies that
+ * require a `node-gyp rebuild` at install time. The build can be skipped
+ * via GITNEXUS_SKIP_OPTIONAL_GRAMMARS=1 (postinstall scripts), or it can
+ * silently soft-fail when the C++ toolchain is missing.
+ *
+ * Either path produces the same observable: the .node binding is absent
+ * at runtime. This helper detects that condition and surfaces a single
+ * stderr line per missing grammar so users learn why .dart/.proto support
+ * is unavailable instead of silently getting a degraded index.
+ */
+
+import { createRequire } from 'module';
+import { cliWarn } from './cli-message.js';
+
+const _require = createRequire(import.meta.url);
+
+interface OptionalGrammar {
+  /** Display name in warnings */
+  name: string;
+  /** Module name to require.resolve */
+  pkg: string;
+  /** File extensions this grammar parses */
+  extensions: string[];
+}
+
+const OPTIONAL_GRAMMARS: OptionalGrammar[] = [
+  { name: 'tree-sitter-dart', pkg: 'tree-sitter-dart', extensions: ['.dart'] },
+  { name: 'tree-sitter-proto', pkg: 'tree-sitter-proto', extensions: ['.proto'] },
+];
+
+export interface MissingGrammar {
+  name: string;
+  extensions: string[];
+}
+
+/**
+ * Returns the list of optional grammars whose native binding cannot be
+ * loaded. Actually `require()`s the package — `require.resolve` would
+ * locate the entry path even when the `.node` binding is absent (the
+ * `file:` package directory is installed regardless of postinstall
+ * outcome), giving false negatives for the exact users we want to warn:
+ * those who installed with `GITNEXUS_SKIP_OPTIONAL_GRAMMARS=1` or whose
+ * native rebuild soft-failed for missing toolchain.
+ *
+ * Node's module cache memoizes `require()` for us — calling this multiple
+ * times is cheap. The catch distinguishes "missing" (MODULE_NOT_FOUND or
+ * the typical node-gyp-build "could not find any binding" pattern) from
+ * "broken" (SyntaxError, EACCES, native crash). Broken bindings surface a
+ * separate stderr line so users get an actionable message instead of a
+ * misleading "reinstall" hint.
+ */
+export function detectMissingOptionalGrammars(): MissingGrammar[] {
+  const missing: MissingGrammar[] = [];
+  for (const g of OPTIONAL_GRAMMARS) {
+    try {
+      _require(g.pkg);
+    } catch (err) {
+      const code = (err as NodeJS.ErrnoException | undefined)?.code;
+      const msg = err instanceof Error ? err.message : String(err);
+      const looksMissing =
+        code === 'MODULE_NOT_FOUND' ||
+        code === 'ERR_MODULE_NOT_FOUND' ||
+        /could not find|no native build|prebuilds/i.test(msg);
+      if (!looksMissing) {
+        // Present but broken — surface so the user doesn't get a misleading
+        // "reinstall" recovery message that wouldn't actually help. cliWarn
+        // writes plain text to stderr AND tees a structured logger.warn
+        // record; the merged repo-wide ESLint pino-migration rule forbids
+        // direct `console.error` in CLI code (only `console.log` is allowed
+        // there for tool-data stdout output).
+        cliWarn(
+          `GitNexus: optional grammar "${g.name}" is installed but failed to load (${msg.slice(0, 200)}). ${g.extensions.join('/')} files will not be parsed.`,
+          { grammar: g.name, extensions: g.extensions, error: msg },
+        );
+      }
+      missing.push({ name: g.name, extensions: g.extensions });
+    }
+  }
+  return missing;
+}
+
+/**
+ * Log a one-line stderr warning for each missing grammar. Safe to call
+ * unconditionally — silent if all grammars are present.
+ *
+ * `relevantExtensions`, if provided, filters the warning to grammars whose
+ * extensions appear in the set (e.g. an analyze run can pass the set of
+ * extensions actually present in the target repo so users without any
+ * .dart/.proto files don't see noise).
+ */
+export function warnMissingOptionalGrammars(opts?: {
+  context?: string;
+  relevantExtensions?: ReadonlySet<string>;
+}): void {
+  const missing = detectMissingOptionalGrammars();
+  if (missing.length === 0) return;
+  const ctx = opts?.context ? ` [${opts.context}]` : '';
+  // Hoist the optional set into a local so the closure below can narrow
+  // its type; references to `opts?.relevantExtensions` inside `.some()`
+  // lose the outer null-check narrowing and require a non-null assertion.
+  const relevantExtensions = opts?.relevantExtensions;
+  for (const g of missing) {
+    if (relevantExtensions && !g.extensions.some((e) => relevantExtensions.has(e))) {
+      continue;
+    }
+    cliWarn(
+      `GitNexus${ctx}: optional grammar "${g.name}" is unavailable — ${g.extensions.join('/')} files will not be parsed. Reinstall without GITNEXUS_SKIP_OPTIONAL_GRAMMARS=1 (and ensure python3, make, g++) to enable.`,
+      { grammar: g.name, extensions: g.extensions, context: opts?.context },
+    );
+  }
+}
@@ -0,0 +1,232 @@
+/**
+ * `gitnexus publish` — opt-in ping to the understand-quickly registry.
+ *
+ * Fires a single `repository_dispatch` event at
+ * `looptech-ai/understand-quickly` so the registry knows to refresh its
+ * entry for the current repo. Does NOT upload anything: per the
+ * understand-quickly protocol, the registry pulls the graph from a
+ * raw-GitHub URL the user controls.
+ *
+ *   https://github.com/looptech-ai/understand-quickly/blob/main/docs/integrations/protocol.md
+ *
+ * Defaults:
+ *   - Without `UNDERSTAND_QUICKLY_TOKEN` in the env, this is a no-op
+ *     (prints one informational line, exit 0). Same shape as the
+ *     `--publish` patterns in sibling tools.
+ *   - With the token, fires the dispatch and reports the response code.
+ *
+ * The `id` is derived from the repo's `origin` remote unless the caller
+ * passes `--id <owner/repo>` explicitly. We deliberately do NOT auto-add
+ * the repo to the registry — registration is one-time and uses the
+ * `npx @understand-quickly/cli add` path documented in the protocol.
+ */
+
+import path from 'path';
+import {
+  UNDERSTAND_QUICKLY_DISPATCH_URL,
+  UNDERSTAND_QUICKLY_TOKEN_ENV,
+  buildUqDispatchPayload,
+  isValidOwnerRepo,
+  parseOwnerRepoFromRemote,
+} from 'gitnexus-shared';
+import { getGitRoot, getRemoteOriginUrl, getCurrentCommit } from '../storage/git.js';
+import { hasIndex } from '../storage/repo-manager.js';
+import { cliInfo, cliError } from './cli-message.js';
+
+export interface PublishOptions {
+  /** Override the auto-derived `owner/repo` id. */
+  id?: string;
+  /** Treat the cwd as the repo root (skip git-root walk). */
+  skipGit?: boolean;
+}
+
+const REGISTER_HINT =
+  'Register your repo once with: npx @understand-quickly/cli add\n' +
+  'Or use the wizard: https://looptech-ai.github.io/understand-quickly/add.html';
+
+/**
+ * Hard cap on the dispatch fetch to keep CI publish steps from stalling
+ * for the OS TCP timeout (~2 min) when api.github.com is unreachable.
+ * Matches the pattern used in `src/core/embeddings/http-client.ts`.
+ */
+const DISPATCH_TIMEOUT_MS = 15_000;
+
+export const publishCommand = async (
+  inputPath?: string,
+  options: PublishOptions = {},
+): Promise<void> => {
+  // ── 0. Token gate FIRST — guarantees true no-op without the token. ──
+  // The README, CLI --help, and PR body all promise "exit 0 without
+  // UNDERSTAND_QUICKLY_TOKEN". Doing the index/repo-root checks before
+  // the token gate would make those promises false for users who haven't
+  // run `gitnexus analyze` yet but want to verify the command is wired.
+  const token = process.env[UNDERSTAND_QUICKLY_TOKEN_ENV];
+  if (!token) {
+    cliInfo(
+      `[understand-quickly] ${UNDERSTAND_QUICKLY_TOKEN_ENV} is not set — skipping dispatch.\n` +
+        `Set it to a fine-grained PAT with "Repository dispatches: write" on ` +
+        `looptech-ai/understand-quickly to enable instant resync.\n` +
+        `(Without the token, the registry's nightly sync still picks up your entry.)`,
+      { skipped: 'no-token' },
+    );
+    return;
+  }
+
+  // ── 1. Resolve the repo root (same precedence as `analyze`) ──────────
+  let repoPath: string;
+  if (inputPath) {
+    repoPath = path.resolve(inputPath);
+  } else if (options.skipGit) {
+    repoPath = path.resolve(process.cwd());
+  } else {
+    const gitRoot = getGitRoot(process.cwd());
+    if (!gitRoot) {
+      cliError(
+        '[understand-quickly] not inside a git repository.\n' +
+          'Run from a repo, or pass --skip-git to publish from the current directory.',
+      );
+      process.exitCode = 1;
+      return;
+    }
+    repoPath = gitRoot;
+  }
+
+  // ── 2. Confirm a GitNexus index exists ───────────────────────────────
+  // Publishing without an index is almost always a mistake — the
+  // registry's nightly sync would fetch a stale or missing graph file
+  // and mark the entry `missing`. Refuse loudly with a fix-it hint.
+  if (!(await hasIndex(repoPath))) {
+    cliError(
+      `[understand-quickly] no GitNexus index found at ${repoPath}/.gitnexus.\n` +
+        'Run `gitnexus analyze` first, then re-run `gitnexus publish`.',
+    );
+    process.exitCode = 1;
+    return;
+  }
+
+  // ── 3. Derive the registry id ─────────────────────────────────────────
+  const id =
+    options.id ?? parseOwnerRepoFromRemote(getRemoteOriginUrl(repoPath) ?? undefined) ?? null;
+  if (!id || !isValidOwnerRepo(id)) {
+    cliError(
+      `[understand-quickly] could not derive a registry id from this repo.\n` +
+        `Pass --id <owner/repo> explicitly (e.g. --id looptech-ai/${path.basename(repoPath)}).\n` +
+        REGISTER_HINT,
+    );
+    process.exitCode = 1;
+    return;
+  }
+
+  // ── 4. Fire the dispatch ─────────────────────────────────────────────
+  const payload = buildUqDispatchPayload(id);
+  let response: Response;
+  try {
+    response = await fetch(UNDERSTAND_QUICKLY_DISPATCH_URL, {
+      method: 'POST',
+      headers: {
+        Accept: 'application/vnd.github+json',
+        Authorization: `Bearer ${token}`,
+        'X-GitHub-Api-Version': '2022-11-28',
+        'Content-Type': 'application/json',
+        'User-Agent': 'gitnexus-cli',
+      },
+      body: JSON.stringify(payload),
+      signal: AbortSignal.timeout(DISPATCH_TIMEOUT_MS),
+    });
+  } catch (err) {
+    // `AbortSignal.timeout()` throws a `DOMException` with `name ===
+    // 'TimeoutError'` on Node 18.14+ (and on browsers/Bun). It is NOT
+    // a plain `AbortError`. Match the pattern used in
+    // gitnexus/src/core/embeddings/http-client.ts so the user sees the
+    // targeted "timed out" message instead of a generic "operation
+    // was aborted".
+    const isTimeout = err instanceof DOMException && err.name === 'TimeoutError';
+    if (isTimeout) {
+      cliError(
+        `[understand-quickly] dispatch timed out after ${DISPATCH_TIMEOUT_MS}ms. ` +
+          `Check network access to api.github.com and retry.`,
+        { id },
+      );
+    } else {
+      const msg = err instanceof Error ? err.message : String(err);
+      cliError(`[understand-quickly] dispatch network error: ${msg}`, { id });
+    }
+    process.exitCode = 1;
+    return;
+  }
+
+  // GitHub returns 204 on success. Distinct branches for 401/403/404/422
+  // so users debug without checking the docs.
+  if (response.status === 204) {
+    await response.body?.cancel().catch(() => {});
+    // `getCurrentCommit` is only meaningful in the success path — moving
+    // it inside this branch removes a wasted child-process spawn on every
+    // error response (LOW 7).
+    const commit = getCurrentCommit(repoPath);
+    cliInfo(
+      `[understand-quickly] dispatched sync-entry for ${id}` +
+        (commit ? ` @ ${commit.slice(0, 7)}` : '') +
+        '.\n' +
+        `Note: a 204 only confirms GitHub accepted the dispatch. Whether the ` +
+        `registry workflow finds an entry for "${id}" is logged at ` +
+        `https://github.com/looptech-ai/understand-quickly/actions/workflows/sync.yml`,
+      { id, commit, status: response.status },
+    );
+    return;
+  }
+
+  if (response.status === 401) {
+    cliError(
+      `[understand-quickly] dispatch returned 401 — the ${UNDERSTAND_QUICKLY_TOKEN_ENV} value is invalid or expired.\n` +
+        `Regenerate a fine-grained PAT at https://github.com/settings/personal-access-tokens ` +
+        `with Repository access scoped to looptech-ai/understand-quickly and the ` +
+        `"Repository dispatches: write" permission, then retry.`,
+      { id, status: response.status },
+    );
+    process.exitCode = 1;
+    return;
+  }
+
+  if (response.status === 403) {
+    cliError(
+      `[understand-quickly] dispatch returned 403 — the token authenticated but ` +
+        `lacks the "Repository dispatches: write" permission on ` +
+        `looptech-ai/understand-quickly. Edit the PAT scopes and retry.`,
+      { id, status: response.status },
+    );
+    process.exitCode = 1;
+    return;
+  }
+
+  if (response.status === 404) {
+    cliError(
+      `[understand-quickly] dispatch returned 404 — the token cannot reach ` +
+        `looptech-ai/understand-quickly. Verify the PAT has Repository access to ` +
+        `that exact repo (not just your own org).`,
+      { id, status: response.status },
+    );
+    process.exitCode = 1;
+    return;
+  }
+
+  if (response.status === 422) {
+    // Malformed event_type / client_payload — a code bug in this CLI,
+    // not a user mistake. Surface so we get bug reports.
+    const body422 = await response.text().catch(() => '');
+    cliError(
+      `[understand-quickly] dispatch returned 422 (this is a CLI bug; please report).\n` +
+        `Body: ${body422 || '(empty)'}`,
+      { id, status: response.status },
+    );
+    process.exitCode = 1;
+    return;
+  }
+
+  // 5xx and anything else → bubble the body so the user has something to act on.
+  const body = await response.text().catch(() => '');
+  cliError(
+    `[understand-quickly] dispatch failed with HTTP ${response.status}: ${body || '(empty body)'}`,
+    { id, status: response.status },
+  );
+  process.exitCode = 1;
+};
@@ -27,6 +27,8 @@
 */

 import fs from 'fs/promises';
+import { logger } from '../core/logger.js';
+import { cliError } from './cli-message.js';
 import {
  readRegistry,
  resolveRegistryEntry,
@@ -51,14 +53,14 @@ export const removeCommand = async (target: string, options?: { force?: boolean
      // Idempotent: missing target is a no-op warning, not an error.
      // The `availableNames` hint comes from the error itself so users
      // can see what they might have meant.
-      console.warn(`Nothing to remove: ${err.message}`);
+      logger.warn(`Nothing to remove: ${err.message}`);
      return;
    }
    if (err instanceof RegistryAmbiguousTargetError) {
      // Duplicate aliases are allowed via --allow-duplicate-name (#829);
      // refuse to guess which one the user meant — surface the full list
      // and exit non-zero so scripts don't silently pick the wrong repo.
-      console.error(`Error: ${err.message}`);
+      cliError(`Error: ${err.message}`);
      process.exit(1);
    }
    throw err;
@@ -86,7 +88,7 @@ export const removeCommand = async (target: string, options?: { force?: boolean
    assertSafeStoragePath(entry);
  } catch (err) {
    if (err instanceof UnsafeStoragePathError) {
-      console.error(`Error: ${err.message}`);
+      cliError(`Error: ${err.message}`);
      process.exit(1);
    }
    throw err;
@@ -104,7 +106,8 @@ export const removeCommand = async (target: string, options?: { force?: boolean
    console.log(`   Path:    ${entry.path}`);
    console.log(`   Storage: ${entry.storagePath}`);
  } catch (err) {
-    console.error(`Failed to remove ${entry.name}:`, err);
+    const msg = err instanceof Error ? err.message : String(err);
+    cliError(`Failed to remove ${entry.name}: ${msg}`, { err });
    process.exit(1);
  }
 };
@@ -1,14 +1,26 @@
 import { createServer } from '../server/api.js';
+import { logger, flushLoggerSync } from '../core/logger.js';
+import { cliError } from './cli-message.js';

-// Catch anything that would cause a silent exit
+// Catch anything that would cause a silent exit. Pino v10's default
+// destination is `sync: false` (SonicBoom buffered) — call
+// `flushLoggerSync()` between the log and `process.exit(1)` so the crash
+// record is not lost to the unflushed buffer. Worker-thread transports
+// (pino-pretty under TTY) handle their own flush on process exit in v10,
+// so no separate `pino.final` integration is needed (the API was removed
+// in v10 because the transport architecture made it unnecessary).
+//
+// We pass the Error itself in `{ err }` so pino's built-in err serializer
+// captures `type`, `message`, and `stack` as structured fields.
 process.on('uncaughtException', (err) => {
-  console.error('\n[gitnexus serve] Uncaught exception:', err.message);
-  if (process.env.DEBUG) console.error(err.stack);
+  logger.error({ err }, '[gitnexus serve] Uncaught exception');
+  flushLoggerSync();
  process.exit(1);
 });
-process.on('unhandledRejection', (reason: any) => {
-  console.error('\n[gitnexus serve] Unhandled rejection:', reason?.message || reason);
-  if (process.env.DEBUG) console.error(reason?.stack);
+process.on('unhandledRejection', (reason) => {
+  const err = reason instanceof Error ? reason : new Error(String(reason));
+  logger.error({ err }, '[gitnexus serve] Unhandled rejection');
+  flushLoggerSync();
  process.exit(1);
 });

@@ -22,16 +34,26 @@ export const serveCommand = async (options?: { port?: string; host?: string }) =
  try {
    await createServer(port, host);
  } catch (err: any) {
-    console.error(`\nFailed to start GitNexus server:\n`);
-    console.error(`  ${err.message || err}\n`);
    if (err.code === 'EADDRINUSE') {
-      console.error(`  Port ${port} is already in use. Either:`);
-      console.error(`    1. Stop the other process using port ${port}`);
-      console.error(`    2. Use a different port: gitnexus serve --port 4748\n`);
+      cliError(
+        `\nFailed to start GitNexus server:\n` +
+          `  ${err.message || err}\n\n` +
+          `  Port ${port} is already in use. Either:\n` +
+          `    1. Stop the other process using port ${port}\n` +
+          `    2. Use a different port: gitnexus serve --port 4748\n`,
+        { code: err.code, port, host },
+      );
+    } else {
+      cliError(`\nFailed to start GitNexus server:\n  ${err.message || err}\n`, {
+        code: err.code,
+        port,
+        host,
+      });
    }
    if (err.stack && process.env.DEBUG) {
-      console.error(err.stack);
+      logger.debug({ stack: err.stack }, 'serve start error stack');
    }
+    flushLoggerSync();
    process.exit(1);
  }
 };
@@ -10,6 +10,7 @@ import fs from 'fs/promises';
 import path from 'path';
 import os from 'os';
 import { execFile, execFileSync } from 'child_process';
+import { createRequire } from 'module';
 import { promisify } from 'util';
 import { fileURLToPath } from 'url';
 import { glob } from 'glob';
@@ -20,6 +21,21 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const execFileAsync = promisify(execFile);

+// Pin the npx fallback to the installed version. Reason: setup.ts writes
+// a config that persists in the user's editor and is invoked on every MCP
+// connect. Pinning to the installed version means subsequent invocations
+// skip the npm-registry metadata roundtrip (and stay reproducible until
+// the user upgrades). Static configs and READMEs intentionally use
+// `gitnexus@latest` since they're quickstart docs, not persisted state.
+const _require = createRequire(import.meta.url);
+const _pkg = _require('../../package.json') as { version?: unknown };
+if (typeof _pkg.version !== 'string' || !_pkg.version) {
+  throw new Error(
+    'gitnexus/package.json#version is missing or not a string — cannot generate MCP fallback config.',
+  );
+}
+const NPX_REF = `gitnexus@${_pkg.version}`;
+
 interface SetupResult {
  configured: string[];
  skipped: string[];
@@ -32,15 +48,27 @@ interface SetupResult {
 */
 function resolveGitnexusBin(): string | null {
  try {
-    const cmd = process.platform === 'win32' ? 'where' : 'which';
-    const resolved = execFileSync(cmd, ['gitnexus'], {
+    const isWin = process.platform === 'win32';
+    const cmd = isWin ? 'where' : 'which';
+    const output = execFileSync(cmd, ['gitnexus'], {
      encoding: 'utf-8',
      timeout: 5000,
      stdio: ['ignore', 'pipe', 'ignore'],
-    })
-      .split('\n')[0]
-      .trim();
-    return resolved || null;
+    });
+    const lines = output
+      .split('\n')
+      .map((l) => l.trim())
+      .filter(Boolean);
+
+    if (isWin) {
+      // On Windows, `where` returns multiple entries (e.g. the POSIX shell
+      // script AND the .cmd/.bat wrapper). Prefer the wrapper because
+      // child_process.spawn() cannot execute a shell script directly.
+      const cmdLine = lines.find((l) => /\.(cmd|bat)$/i.test(l));
+      return cmdLine || lines[0] || null;
+    }
+
+    return lines[0] || null;
  } catch {
    return null;
  }
@@ -50,8 +78,10 @@ function resolveGitnexusBin(): string | null {
 * The MCP server entry for all editors.
 *
 * Prefers the globally-installed `gitnexus` binary (starts in ~1 s) over
- * `npx -y gitnexus@latest` (cold-cache install of native deps can take
- * >60 s, exceeding Claude Code's 30 s MCP connection timeout).
+ * `npx -y gitnexus@<version>` (cold-cache install of native deps can take
+ * >60 s, exceeding Claude Code's 30 s MCP connection timeout). The fallback
+ * version is read from gitnexus/package.json#version at module load so the
+ * persisted user config matches the installed package.
 *
 * Falls back to npx when the binary isn't on PATH — e.g. first-time
 * users who ran `npx gitnexus analyze` but haven't done `npm i -g`.
@@ -67,12 +97,12 @@ function getMcpEntry() {
  if (process.platform === 'win32') {
    return {
      command: 'cmd',
-      args: ['/c', 'npx', '-y', 'gitnexus@latest', 'mcp'],
+      args: ['/c', 'npx', '-y', NPX_REF, 'mcp'],
    };
  }
  return {
    command: 'npx',
-    args: ['-y', 'gitnexus@latest', 'mcp'],
+    args: ['-y', NPX_REF, 'mcp'],
  };
 }

@@ -88,9 +118,9 @@ function getOpenCodeMcpEntry() {
  }

  if (process.platform === 'win32') {
-    return { type: 'local', command: ['cmd', '/c', 'npx', '-y', 'gitnexus@latest', 'mcp'] };
+    return { type: 'local', command: ['cmd', '/c', 'npx', '-y', NPX_REF, 'mcp'] };
  }
-  return { type: 'local', command: ['npx', '-y', 'gitnexus@latest', 'mcp'] };
+  return { type: 'local', command: ['npx', '-y', NPX_REF, 'mcp'] };
 }

 /**
@@ -335,7 +365,12 @@ async function installClaudeCodeHooks(result: SetupResult): Promise<void> {
    }

    const hookPath = path.join(destHooksDir, 'gitnexus-hook.cjs').replace(/\\/g, '/');
-    const hookCmd = `node "${hookPath.replace(/"/g, '\\"')}"`;
+    // Escape backslashes FIRST, then quotes (CodeQL js/incomplete-sanitization).
+    // The previous shape `replace(/"/g, '\\"')` alone would let `path\with"quote`
+    // become `path\with\"quote`, where the trailing `\` before `"` could
+    // unescape the quote inside the surrounding double-quoted shell context.
+    const escapedHookPath = hookPath.replace(/\\/g, '\\\\').replace(/"/g, '\\"');
+    const hookCmd = `node "${escapedHookPath}"`;

    // Check which hook events need entries (idempotent: skip if already registered)
    const parsed = await (async () => {
@@ -581,18 +616,18 @@ async function installCursorSkills(result: SetupResult): Promise<void> {
 }

 /**
- * Install global OpenCode skills to ~/.config/opencode/skill/gitnexus/
+ * Install global OpenCode skills to ~/.config/opencode/skills/gitnexus/
 */
 async function installOpenCodeSkills(result: SetupResult): Promise<void> {
  const opencodeDir = path.join(os.homedir(), '.config', 'opencode');
  if (!(await dirExists(opencodeDir))) return;

-  const skillsDir = path.join(opencodeDir, 'skill');
+  const skillsDir = path.join(opencodeDir, 'skills');
  try {
    const installed = await installSkillsTo(skillsDir);
    if (installed.length > 0) {
      result.configured.push(
-        `OpenCode skills (${installed.length} skills → ~/.config/opencode/skill/)`,
+        `OpenCode skills (${installed.length} skills → ~/.config/opencode/skills/)`,
      );
    }
  } catch (err: any) {
@@ -17,6 +17,7 @@

 import { writeSync } from 'node:fs';
 import { LocalBackend } from '../mcp/local/local-backend.js';
+import { cliError } from './cli-message.js';

 let _backend: LocalBackend | null = null;

@@ -25,7 +26,7 @@ async function getBackend(): Promise<LocalBackend> {
  _backend = new LocalBackend();
  const ok = await _backend.init();
  if (!ok) {
-    console.error('GitNexus: No indexed repositories found. Run: gitnexus analyze');
+    cliError('GitNexus: No indexed repositories found. Run: gitnexus analyze');
    process.exit(1);
  }
  return _backend;
@@ -67,7 +68,7 @@ export async function queryCommand(
  },
 ): Promise<void> {
  if (!queryText?.trim()) {
-    console.error('Usage: gitnexus query <search_query>');
+    cliError('Usage: gitnexus query <search_query>');
    process.exit(1);
  }

@@ -93,7 +94,7 @@ export async function contextCommand(
  },
 ): Promise<void> {
  if (!name?.trim() && !options?.uid) {
-    console.error('Usage: gitnexus context <symbol_name> [--uid <uid>] [--file <path>]');
+    cliError('Usage: gitnexus context <symbol_name> [--uid <uid>] [--file <path>]');
    process.exit(1);
  }

@@ -118,7 +119,7 @@ export async function impactCommand(
  },
 ): Promise<void> {
  if (!target?.trim()) {
-    console.error('Usage: gitnexus impact <symbol_name> [--direction upstream|downstream]');
+    cliError('Usage: gitnexus impact <symbol_name> [--direction upstream|downstream]');
    process.exit(1);
  }

@@ -153,7 +154,7 @@ export async function cypherCommand(
  },
 ): Promise<void> {
  if (!query?.trim()) {
-    console.error('Usage: gitnexus cypher <cypher_query>');
+    cliError('Usage: gitnexus cypher <cypher_query>');
    process.exit(1);
  }

@@ -19,6 +19,7 @@ import {
 import { WikiGenerator, type WikiOptions } from '../core/wiki/generator.js';
 import { resolveLLMConfig, type LLMProvider } from '../core/wiki/llm-client.js';
 import { detectCursorCLI } from '../core/wiki/cursor-client.js';
+import { logger } from '../core/logger.js';

 export interface WikiCommandOptions {
  force?: boolean;
@@ -583,7 +584,7 @@ export const wikiCommand = async (inputPath?: string, options?: WikiCommandOptio
    } else {
      console.log(`\n  Error: ${err.message}\n`);
      if (process.env.GITNEXUS_VERBOSE) {
-        console.error(err);
+        logger.error({ err }, 'wiki command failed');
      }
    }
    process.exitCode = 1;
@@ -601,6 +602,38 @@ function hasGhCLI(): boolean {
  }
 }

+/**
+ * Strict Gist URL predicate. Rejects:
+ *   - any URL that does not parse (URL constructor throws)
+ *   - schemes other than https (drops `http:`, `file:`, `gist:`-style spoofs)
+ *   - hostnames that are not exactly `gist.github.com` (drops substring spoofs
+ *     like `https://evil.com/?u=gist.github.com` and userinfo-prefixed shapes
+ *     like `https://[email protected]/...` — note that URL.hostname
+ *     strips userinfo, so the equality check rejects the userinfo-prefixed
+ *     spoof if the actual host differs from gist.github.com)
+ *   - any URL containing userinfo (`username[:password]@`), which the URL
+ *     parser exposes via `.username` / `.password`. Defense-in-depth: even
+ *     when hostname matches, a credential-bearing URL is suspect and not
+ *     produced by `gh gist create`.
+ *
+ * Closes the substring-bypass class CodeQL `js/incomplete-url-substring-
+ * sanitization` flags.
+ */
+function isGistUrl(line: string): boolean {
+  const trimmed = line.trim();
+  try {
+    const u = new URL(trimmed);
+    return (
+      u.protocol === 'https:' &&
+      u.hostname === 'gist.github.com' &&
+      u.username === '' &&
+      u.password === ''
+    );
+  } catch {
+    return false;
+  }
+}
+
 function publishGist(htmlPath: string): { url: string; rawUrl: string } | null {
  try {
    const output = execFileSync(
@@ -609,13 +642,14 @@ function publishGist(htmlPath: string): { url: string; rawUrl: string } | null {
      { encoding: 'utf-8', stdio: ['pipe', 'pipe', 'pipe'] },
    ).trim();

-    // gh gist create prints the gist URL as the last line
-    const lines = output.split('\n');
-    const gistUrl = lines.find((l) => l.includes('gist.github.com')) || lines[lines.length - 1];
+    // `gh gist create` prints the gist URL as a line in the output. Find the
+    // first parseable Gist URL — if no line is a valid Gist URL, fail closed
+    // (do NOT fall back to lines[last]: a non-Gist last line would propagate
+    // through the regex below and produce a malformed `rawUrl`).
+    const gistUrl = output.split('\n').find(isGistUrl);
+    if (!gistUrl) return null;

-    if (!gistUrl || !gistUrl.includes('gist.github.com')) return null;
-
-    // Build a raw viewer URL via gist.githack.com
+    // Build a raw viewer URL via gist.githack.com.
    // gist URL format: https://gist.github.com/{user}/{id}
    const match = gistUrl.match(/gist\.github\.com\/([^/]+)\/([a-f0-9]+)/);
    let rawUrl = gistUrl;
@@ -2,6 +2,7 @@ import ignore, { type Ignore } from 'ignore';
 import fs from 'fs/promises';
 import nodePath from 'path';
 import type { Path } from 'path-scurry';
+import { logger } from '../core/logger.js';

 const DEFAULT_IGNORE_LIST = new Set([
  // Version Control
@@ -24,6 +25,8 @@ const DEFAULT_IGNORE_LIST = new Set([
  'bower_components',
  'jspm_packages',
  'vendor', // PHP/Go
+  'third_party', // C/C++ (Google-style vendored dependencies)
+  '3rdparty', // C/C++ (alternate spelling, also Qt convention)
  // 'packages' removed - commonly used for monorepo source code (lerna, pnpm, yarn workspaces)
  'venv',
  '.venv',
@@ -365,7 +368,7 @@ export const loadIgnoreRules = async (
    } catch (err: unknown) {
      const code = (err as NodeJS.ErrnoException).code;
      if (code !== 'ENOENT') {
-        console.warn(`  Warning: could not read ${filename}: ${(err as Error).message}`);
+        logger.warn(`  Warning: could not read ${filename}: ${(err as Error).message}`);
      }
    }
  }
@@ -104,7 +104,7 @@ export async function augment(pattern: string, cwd?: string): Promise<string> {
    }

    // Step 1: BM25 search (fast, no embeddings)
-    const bm25Results = await searchFTSFromLbug(pattern, 10, repoId);
+    const { results: bm25Results } = await searchFTSFromLbug(pattern, 10, repoId);

    if (bm25Results.length === 0) return '';

@@ -30,6 +30,38 @@ export interface EmbeddingMode {
  shouldLoadCache: boolean;
 }

+/** Default safety cap on graph node count for embedding generation. */
+export const DEFAULT_EMBEDDING_NODE_LIMIT = 50_000;
+
+export interface EmbeddingCapDecision {
+  /** True when the node-count cap blocks generation for this graph. */
+  skipForCap: boolean;
+  /** True when the user explicitly disabled the cap (`--embeddings 0`). */
+  capDisabled: boolean;
+  /** Effective node limit applied (`0` means disabled). */
+  nodeLimit: number;
+}
+
+/**
+ * Decide whether the node-count safety cap blocks embedding generation.
+ *
+ * - `embeddingsNodeLimit === undefined` → use {@link DEFAULT_EMBEDDING_NODE_LIMIT}
+ * - `embeddingsNodeLimit === 0` → cap disabled, generation always proceeds
+ * - any positive integer → custom cap (skip if `nodeCount > limit`)
+ *
+ * Lives in `embedding-mode.ts` (not `run-analyze.ts`) so the branching
+ * contract is unit-testable without spinning up LadybugDB or the pipeline.
+ */
+export function deriveEmbeddingCap(
+  nodeCount: number,
+  embeddingsNodeLimit: number | undefined,
+): EmbeddingCapDecision {
+  const nodeLimit = embeddingsNodeLimit ?? DEFAULT_EMBEDDING_NODE_LIMIT;
+  const capDisabled = nodeLimit === 0;
+  const skipForCap = !capDisabled && nodeCount > nodeLimit;
+  return { skipForCap, capDisabled, nodeLimit };
+}
+
 export function deriveEmbeddingMode(
  options: EmbeddingModeInput,
  existingEmbeddingCount: number,
@@ -0,0 +1,54 @@
+import { defaultEmbeddingThreads } from '../platform/capabilities.js';
+import { DEFAULT_EMBEDDING_CONFIG, type EmbeddingConfig } from './types.js';
+
+const parsePositiveInt = (name: string, value: string | undefined, fallback: number): number => {
+  if (value === undefined) return fallback;
+  const parsed = Number(value);
+  if (!Number.isInteger(parsed) || parsed <= 0) {
+    throw new Error(`${name} must be a positive integer, got "${value}"`);
+  }
+  return parsed;
+};
+
+const parseDevice = (value: string | undefined): EmbeddingConfig['device'] | undefined => {
+  if (value === undefined) return undefined;
+  if (
+    value === 'auto' ||
+    value === 'dml' ||
+    value === 'cuda' ||
+    value === 'cpu' ||
+    value === 'wasm'
+  ) {
+    return value;
+  }
+  throw new Error(`embedding device must be one of auto, dml, cuda, cpu, wasm; got "${value}"`);
+};
+
+export const resolveEmbeddingConfig = (
+  overrides: Partial<EmbeddingConfig> = {},
+): EmbeddingConfig => {
+  const env = process.env;
+  return {
+    ...DEFAULT_EMBEDDING_CONFIG,
+    ...overrides,
+    batchSize: parsePositiveInt(
+      'GITNEXUS_EMBEDDING_BATCH_SIZE',
+      env.GITNEXUS_EMBEDDING_BATCH_SIZE,
+      overrides.batchSize ?? DEFAULT_EMBEDDING_CONFIG.batchSize,
+    ),
+    subBatchSize: parsePositiveInt(
+      'GITNEXUS_EMBEDDING_SUB_BATCH_SIZE',
+      env.GITNEXUS_EMBEDDING_SUB_BATCH_SIZE,
+      overrides.subBatchSize ?? DEFAULT_EMBEDDING_CONFIG.subBatchSize,
+    ),
+    threads: parsePositiveInt(
+      'GITNEXUS_EMBEDDING_THREADS',
+      env.GITNEXUS_EMBEDDING_THREADS,
+      overrides.threads ?? defaultEmbeddingThreads(),
+    ),
+    device:
+      parseDevice(env.GITNEXUS_EMBEDDING_DEVICE) ??
+      overrides.device ??
+      DEFAULT_EMBEDDING_CONFIG.device,
+  };
+};
--- a/Show More
+++ b/Show More