When delegate-task resumes a session via session_id, the response
task_metadata now includes a subagent field identifying which agent
was running in the resumed session. This allows the parent agent to
know what type of subagent it is continuing.
- sync-continuation: uses resumeAgent extracted from session messages
- background-continuation: uses task.agent from BackgroundTask object
- Gracefully omits subagent when agent info is unavailable
- Add comprehensive TODO SYNC section documenting automatic
bidirectional sync between tasks and OpenCode todo system
- Improve sync-continuation.test.ts with proper mock modules
for pollSyncSession and fetchSyncResult dependencies
- Add tests for sync-continuation error paths and toast cleanup
- Add tests for sync-result-fetcher with anchor message support
- Expand sync-session-poller tests for edge cases and completion detection
- Add bulk cleanup test for recent-synthetic-idles
