Documented Nov 23, 2025 bug where monitoring loop created array snapshot
before async processing, causing removed trades to be processed twice.
Real incident:
- Trade cmibdii4k0004pe07nzfmturo (manual closure)
- 97% size reduction detected
- First iteration removed trade from Map
- Second iteration processed stale reference
- Result: Duplicate Telegram notifications
Fix: Added activeTrades.has() guard at start of checkTradeConditions()
Prevents duplicate processing when trade removed during loop iteration
Also documented:
- Quality threshold .env discrepancy (81 vs 91)
- Settings UI restart requirement
- Why Next.js modules need container restart for env changes
Related to Common Pitfall #59 (Layer 2 ghost detection duplicates)
but different trigger - normal monitoring vs rate limit storm detection
187a123a25