- Documented bug where phantom auto-closure sets status='phantom' but left exitReason=NULL
- Startup validator only checks exitReason, not status field
- Ghost positions created false runner stop loss alerts (232% size mismatch)
- Fix: MUST set exitReason when closing phantom trades
- Manual cleanup: UPDATE Trade SET exitReason='manual' WHERE status='phantom' AND exitReason IS NULL
- Verified: System now shows 'Found 0 open trades' after cleanup
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