When multiple workflows use `use_sticky_comment: true` on the same PR,
they previously co-opted each other's comments due to bot ID/name
matching. This adds a hidden `<!-- sticky-job: {jobId} -->` header
using `github.job` to isolate each workflow's sticky comment
automatically with no user configuration needed.
- Add sticky-job header to comments via createCommentBody()
- Match comments by job ID header instead of bot ID/name
- Preserve sticky-job headers through sanitizeContent() pipeline
- Preserve sticky-job headers through updateCommentBody() rebuilds
- Add pagination for comment search on busy PRs
- Fall back to bot ID/name matching when no job ID is available
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
263b3b725a