fix: portfolio simulator pnl calculation and trade status

agents/papert.py

@@ -142,8 +142,16 @@ class Portfolio:
             fee = gross * fee_rate
             net_proceeds = gross - fee
             amount_usdt = gross
-            pnl = net_proceeds - (btc_to_sell * price)  # simplified
-            pnl_pct = (pnl / (btc_to_sell * price)) * 100 if btc_to_sell > 0 else 0
+            
+            # Calculate average entry price from OPEN BUYs
+            c.execute(f"SELECT entry_price, btc_amount FROM {self.tbl_trades} WHERE action='BUY' AND result IN ('PENDING', 'OPEN')")
+            buy_trades = c.fetchall()
+            total_cost = sum(t[0] * t[1] for t in buy_trades)
+            total_btc = sum(t[1] for t in buy_trades)
+            avg_entry = total_cost / total_btc if total_btc > 0 else price
+            
+            pnl = net_proceeds - (btc_to_sell * avg_entry)
+            pnl_pct = (pnl / (btc_to_sell * avg_entry)) * 100 if (btc_to_sell * avg_entry) > 0 else 0
 
             new_balance = balance + net_proceeds
             new_btc_held = btc_held - btc_to_sell
@@ -157,7 +165,7 @@ class Portfolio:
             else:
                 exit_reason = f"signal_{self.strategy}"
 
-            result_str = f"🔴 SELL ({self.strategy}) | {btc_to_sell:.6f} BTC @ ${price:,.0f} | Net: ${net_proceeds:.2f} | Fee: ${fee:.2f}"
+            result_str = f"🔴 SELL ({self.strategy}) | {btc_to_sell:.6f} BTC @ ${price:,.0f} | Net: ${net_proceeds:.2f} | PNL: ${pnl:.2f} | Fee: ${fee:.2f}"
         else:
             new_balance = balance
             new_btc_held = btc_held
@@ -165,17 +173,23 @@ class Portfolio:
 
         # Record trade if it happened
         if action in ("BUY", "SELL") and (action == "BUY" or btc_held > 0):
-            is_win = pnl > 0 if action == "SELL" and btc_held > 0 else None
+            is_win = pnl > 0 if action == "SELL" else None
+            trade_result = "WIN" if is_win is True else ("LOSS" if is_win is False else "OPEN")
+            
             c.execute(f"""
                 INSERT INTO {self.tbl_trades} (date,action,entry_price,amount_usdt,btc_amount,exit_price,pnl_usdt,pnl_pct,stop_loss,take_profit,fee_usdt,exit_reason,result,created_at)
                 VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?)
             """, (today, action, price, amount_usdt, btc_amount,
                   price if action == "SELL" else 0,
                   pnl, pnl_pct, stop_loss, take_profit,
-                  amount_usdt * fee_rate if action == "BUY" else amount_usdt * fee_rate if action == "SELL" else 0,
-                  exit_reason, "WIN" if is_win else ("LOSS" if is_win is False else "PENDING"),
+                  amount_usdt * fee_rate,
+                  exit_reason, trade_result,
                   now))
                   
+            if action == "SELL":
+                # Mark previous OPEN buys as CLOSED
+                c.execute(f"UPDATE {self.tbl_trades} SET result='CLOSED' WHERE action='BUY' AND result IN ('PENDING', 'OPEN')")
+
             # Update daily stats
             c.execute(f"UPDATE {self.tbl_portfolio} SET balance=?, btc_held=?, total_trades=total_trades+1 WHERE date=?",
                       (new_balance, new_btc_held, today))