mindesbunister 1a5205c289 critical: Fix SL/TP exit P&L compounding with atomic deduplication ...

CRITICAL BUG FIX: Stop loss and take profit exits were sending duplicate
Telegram notifications with compounding P&L (16 duplicates, 796x inflation).

Real Incident (Dec 2, 2025):
- Manual SOL-PERP SHORT position stopped out
- 16 duplicate Telegram notifications received
- P&L compounding: $0.23 → $12.10 → $24.21 → $183.12 (796× multiplication)
- All showed identical: entry $139.64, hold 4h 5-6m, exit reason SL
- First notification: Ghost detected (handled correctly)
- Next 15 notifications: SL exit (all duplicates with compounding P&L)

Root Cause:
- Multiple monitoring loops detect SL condition simultaneously
- All call executeExit() before any can remove position from tracking
- Race condition: check closingInProgress → both true → both proceed
- Database update happens BEFORE activeTrades.delete()
- Each execution sends Telegram notification
- P&L values compound across notifications

Solution:
Applied same atomic delete pattern as ghost detection fix (commit 93dd950):
- Move activeTrades.delete() to START of executeExit() (before any async operations)
- Check wasInMap return value (only true for first caller, false for duplicates)
- Early return if already deleted (atomic deduplication guard)
- Only first loop proceeds to close, save DB, send notification
- Removed redundant removeTrade() call (already deleted at start)

Impact:
- Prevents duplicate notifications for SL, TP1, TP2, emergency stops
- Ensures accurate P&L reporting (no compounding)
- Database receives correct single exit record
- User receives ONE notification per exit (as intended)

Code Changes:
- Line ~1520: Added atomic delete guard for full closes (percentToClose >= 100)
- Line ~1651: Removed redundant removeTrade() call
- Both changes prevent race condition at function entry

Scope:
- ✅ Stop loss exits: Fixed
- ✅ Take profit 2 exits: Fixed
- ✅ Emergency stops: Fixed
- ✅ Trailing stops: Fixed
- ℹ️ Take profit 1: Not affected (partial close keeps position in monitoring)

Related:
- Ghost detection fix: commit 93dd950 (Dec 2, 2025) - same pattern, different function
- Manual trade enhancement: commit 23277b7 (Dec 2, 2025) - unrelated feature
- P&L compounding series: Common Pitfalls #48-49, #59-61, #67 in docs

2025-12-02 23:32:09 +01:00

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