E2E test confirmed: Claude correctly responds to @claude mentions in PR review comments on Forgejo (run #12075, PR #15). Three bugs were found and fixed during validation: 1. Missing comment object in Forgejo webhook payload 2. Event name mismatch (pull_request_comment vs pull_request_review_comment) 3. MCP server routing updates to wrong API (critical — silently dropped responses) Progress: 3/8 milestones complete (37.5%) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>