docs(skills): document ready_for_review and other PR actions - #464

Bugbot Analysis Progress (29s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (25s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_39f53652-6332-433c-8271-f38e37953876