Omit empty sections. Each checkbox item must correspond to an entry in `comments`.
If there are no issues at all, write a short message saying the PR looks good.
+ Throughout all phases, track any errors that prevented you from doing
+ your job fully: permission denials (403, "Resource not accessible by
+ integration"), tools that were not available, rate limits, or any other
+ failures that degraded the review quality. If there were any, append a
+ `### Errors` section listing each failed tool/action and the error
+ message, so maintainers can fix the workflow configuration.
+
**If an existing tracking comment was found (subsequent run):**
Use the existing comment as the starting point. Preserve the order and wording
of all existing items. Then apply these updates: