fix: correct PnL math and add health probe

lib/trading/position-manager.ts

@@ -350,15 +350,15 @@ export class PositionManager {
             
             await this.saveTradeState(trade)
             
+            // CRITICAL: Don't return early! Continue monitoring the runner position
+            // The trailing stop logic at line 732 needs to run
+            
           } else {
             // Partial fill detected but unclear which TP - just update size
             console.log(`⚠️ Unknown partial fill detected - updating tracked size to $${positionSizeUSD.toFixed(2)}`)
             trade.currentSize = positionSizeUSD
             await this.saveTradeState(trade)
           }
-          
-          // Continue monitoring the remaining position
-          return
         }
         
         // CRITICAL: Check for entry price mismatch (NEW position opened)
@@ -380,10 +380,10 @@ export class PositionManager {
               trade.lastPrice,
               trade.direction
             )
-            const accountPnL = profitPercent * trade.leverage
-            const estimatedPnL = (trade.currentSize * accountPnL) / 100
+            const accountPnLPercent = profitPercent * trade.leverage
+            const estimatedPnL = (trade.currentSize * profitPercent) / 100
             
-            console.log(`💰 Estimated P&L for lost trade: ${profitPercent.toFixed(2)}% price → ${accountPnL.toFixed(2)}% account → $${estimatedPnL.toFixed(2)} realized`)
+            console.log(`💰 Estimated P&L for lost trade: ${profitPercent.toFixed(2)}% price → ${accountPnLPercent.toFixed(2)}% account → $${estimatedPnL.toFixed(2)} realized`)
             
             try {
               await updateTradeExit({
@@ -450,8 +450,7 @@ export class PositionManager {
             currentPrice,
             trade.direction
           )
-          const accountPnL = profitPercent * trade.leverage
-          realizedPnL = (sizeForPnL * accountPnL) / 100
+          realizedPnL = (sizeForPnL * profitPercent) / 100
         }
         
         // Determine exit reason from trade state and P&L
@@ -708,7 +707,7 @@ export class PositionManager {
     }
 
     // 5. Take profit 2 (remaining position)
-    if (trade.tp1Hit && this.shouldTakeProfit2(currentPrice, trade)) {
+    if (trade.tp1Hit && !trade.tp2Hit && this.shouldTakeProfit2(currentPrice, trade)) {
       console.log(`🎊 TP2 HIT: ${trade.symbol} at ${profitPercent.toFixed(2)}%`)
       
       // Calculate how much to close based on TP2 size percent