003: GitHub Event Throttling After ~20 Reviews

Problem

After ~20 CHANGES_REQUESTED reviews from the same bot on a single PR, the pull_request_review event stops triggering the fix agent workflow. The review is posted successfully but no workflow run is created.

Root Cause

GitHub's secondary rate limits or anti-abuse detection suppresses event delivery. Content-generating requests cost 5 points toward a 900 points/min limit. Combined with other API calls per review cycle, the bot may exhaust the budget or trigger anomaly detection.

Observed

• Reviews 1-18 on PR #3: reliably triggered fix agent
• Reviews 19-22: event not delivered, no fix agent run created

Proposed Fix

Replace event-driven trigger with explicit workflow_dispatch API call from review agent after submitting the review. workflow_dispatch bypasses event delivery entirely and can target any branch.

Keep pull_request_review trigger as fallback for manual reviews.