**Problem:**
When closing small runner positions (5% after TP1+TP2), the calculated size could be below Drift's minimum order size:
- ETH minimum: 0.01 ETH
- After TP1 (75%): 0.0025 ETH left
- After TP2 (80%): 0.0005 ETH runner
- Trailing stop tries to close 0.0005 ETH → ERROR: Below minimum 0.01
n8n showed: "Order size 0.0011 is below minimum 0.01"
**Root Cause:**
closePosition() calculated: sizeToClose = position.size * (percentToClose / 100)
No validation against marketConfig.minOrderSize before submitting to Drift.
**Solution:**
Added minimum size check in closePosition() (lib/drift/orders.ts):
1. Calculate intended close size
2. If below minOrderSize → force 100% close instead
3. Log warning when this happens
4. Prevents Drift API rejection
**Code Change:**
```typescript
let sizeToClose = position.size * (params.percentToClose / 100)
// If calculated size is below minimum, close 100%
if (sizeToClose < marketConfig.minOrderSize) {
console.log('⚠️ Calculated size below minimum - forcing 100% close')
sizeToClose = position.size
}
```
**Impact:**
- ✅ Small runner positions close successfully
- ✅ No more "below minimum" errors from Drift
- Trades complete cleanly
- ⚠️ Runner may close slightly earlier than intended (but better than error)
**Example:**
ETH runner at 0.0005 ETH → tries to close → detects <0.01 → closes entire 0.0005 ETH position at once instead of rejecting.
This is the correct behavior - if the position is already too small, we should close it entirely.
cfc15cd3b0