mindesbunister
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docs: Add Common Pitfall #37 - Ghost position accumulation
Documented:
- Root cause: Failed DB updates leaving exitReason NULL
- Impact: Rate limit storms from managing non-existent positions
- Real incidents: Nov 14-15, 4+ ghost positions tracked
- Solution: Periodic validation every 5 minutes with auto-cleanup
- Implementation details with code examples
- Benefits: Self-healing, minimal overhead, prevents recurrence
- Why paid RPC doesn't fix (state management vs capacity)