Root cause: trade.realizedPnL was reading from in-memory ActiveTrade object
which could have stale/mutated values from previous detection cycles.
Bug sequence:
1. External closure detected, calculates P&L including previouslyRealized
2. Updates database with totalRealizedPnL
3. Same closure detected again (due to race condition or rate limits)
4. Reads previouslyRealized from same in-memory object (now has accumulated value)
5. Adds MORE P&L to it, compounds 2x, 5x, 10x
Real impact: 9 expected P&L became 81 (10x inflation)
Fix: Remove previouslyRealized from calculation entirely for external closures.
External closures calculate ONLY the current position P&L, not cumulative.
Database will have correct cumulative value if TP1 was processed separately.
Lines changed: lib/trading/position-manager.ts:785-803
- Removed: const previouslyRealized = trade.realizedPnL
- Removed: previouslyRealized + runnerRealized
- Now: totalRealizedPnL = runnerRealized (ONLY this closure's P&L)
Tested: Build completed successfully, container deployed and monitoring positions
7833686b7b