- Add event emitter to MergeLogic for conflict-detected, conflict-resolved, merge-complete events - Connect MergeLogic.getLastLocalChange() to ChangeTracker for conflict detection - Wire ConflictDetectionAlerts component to MergeLogic conflict events - Add integration tests for full change tracking + merge workflow (8 new tests) - All 89 tests pass Co-Authored-By: Paperclip <noreply@paperclip.ing>