- Added comprehensive documentation for close verification gap bug
- Real incident: 6 hours unmonitored exposure after close confirmation
- Root cause: Transaction confirmed ≠ Drift state propagated (5-10s delay)
- Fix: 5s wait + verification + needsVerification flag for Position Manager
- Prevents premature database 'closed' marking while position still open
- TypeScript interface updated: ClosePositionResult.needsVerification
- Deployed: Nov 16, 2025 09:28:20 CET
- Commits: c607a66 (logic), b23dde0 (interface)