test: 更新断言以覆盖 setup-token 纳入后台刷新

- ListOAuthRefreshCandidates SQL 断言由 type = 'oauth' 改为
  type IN ('oauth', 'setup-token')。
- ClaudeTokenRefresher.CanRefresh 增加 anthropic setup-token → true 用例。

backend/internal/repository/account_repo_temp_unsched_test.go

@@ -43,7 +43,8 @@ func TestAccountRepository_ListOAuthRefreshCandidates_SQLFilter(t *testing.T) {
 	normalized := normalizeSQLWhitespace(capturedSQL)
 	require.Contains(t, normalized, "deleted_at IS NULL")
 	require.Contains(t, normalized, "status = 'active'")
-	require.Contains(t, normalized, "type = 'oauth'")
+	// setup-token 的 access_token 同为 8h 短期令牌，必须与 oauth 一起纳入后台刷新候选
+	require.Contains(t, normalized, "type IN ('oauth', 'setup-token')")
 	require.Contains(t, normalized, "platform IN ('anthropic', 'openai', 'gemini', 'antigravity')")
 	require.Contains(t, normalized, "credentials ? 'refresh_token'")
 	require.Contains(t, normalized, "btrim(credentials->>'refresh_token') <> ''")

backend/internal/service/token_refresher_test.go

@@ -194,6 +194,12 @@ func TestClaudeTokenRefresher_CanRefresh(t *testing.T) {
 			accType:  AccountTypeOAuth,
 			want:     true,
 		},
+		{
+			name:     "anthropic setup-token - can refresh",
+			platform: PlatformAnthropic,
+			accType:  AccountTypeSetupToken,
+			want:     true,
+		},
 		{
 			name:     "anthropic api-key - cannot refresh",
 			platform: PlatformAnthropic,