chore: let release-please maintain helm appVersion (#1884)

helm/agent-canvas/Chart.yaml

@@ -11,7 +11,9 @@ version: 0.1.0
 # config/defaults.json (`versions.agentCanvas`). Override via
 # `--set image.tag=...` to pull a different build (e.g. `main`, `latest`,
 # or a `sha-<git-sha>` tag).
-appVersion: "1.2.0"
+# Kept in sync by release-please (extra-files, type `generic`) — do not edit by
+# hand; the trailing annotation is what marks this line for replacement.
+appVersion: "1.5.2" # x-release-please-version
 kubeVersion: ">=1.24.0-0"
 home: https://github.com/OpenHands/agent-canvas
 sources:

release-please-config.json

@@ -15,6 +15,11 @@
           "path": "config/defaults.json",
           "jsonpath": "$.versions.agentCanvas"
         },
+        {
+          "_comment": "Must stay `generic` (annotation-driven). A bare \"helm/agent-canvas/Chart.yaml\" string would resolve to CompositeUpdater(GenericYaml('$.version'), Generic), which overwrites the chart-level `version` and strips every comment in the file when js-yaml re-serializes it.",
+          "type": "generic",
+          "path": "helm/agent-canvas/Chart.yaml"
+        },
         "README.md",
         "README.windows.md"
       ]