fix: Add runner stop loss protection (CRITICAL)

- CRITICAL BUG: Position Manager only checked SL before TP1
- After TP1 hit, runner had NO stop loss protection
- Added separate SL check for runner (after TP1, before TP2)
- Runner now protected by profit-lock SL on Position Manager

Bug discovered: Runner position with no on-chain orders (below min size)
AND no software protection (SL check skipped after TP1).

Impact: 2.79 runner exposed to unlimited loss for 10+ minutes.
Fix: Added line 881-886 runner SL check in monitoring loop.

lib/trading/position-manager.ts

@@ -869,13 +869,21 @@ export class PositionManager {
       return
     }
 
-    // 2. Stop loss
+    // 2. Stop loss (BEFORE TP1)
     if (!trade.tp1Hit && this.shouldStopLoss(currentPrice, trade)) {
       console.log(`🔴 STOP LOSS: ${trade.symbol} at ${profitPercent.toFixed(2)}%`)
       await this.executeExit(trade, 100, 'SL', currentPrice)
       return
     }
 
+    // 2b. CRITICAL: Runner stop loss (AFTER TP1, BEFORE TP2)
+    // This protects the runner position after TP1 closes main position
+    if (trade.tp1Hit && !trade.tp2Hit && this.shouldStopLoss(currentPrice, trade)) {
+      console.log(`🔴 RUNNER STOP LOSS: ${trade.symbol} at ${profitPercent.toFixed(2)}% (profit lock triggered)`)
+      await this.executeExit(trade, 100, 'SL', currentPrice)
+      return
+    }
+
     // 3. Take profit 1 (closes configured %)
     if (!trade.tp1Hit && this.shouldTakeProfit1(currentPrice, trade)) {
       console.log(`🎉 TP1 HIT: ${trade.symbol} at ${profitPercent.toFixed(2)}%`)