fix: Adjust open trades summary query to handle sell orders and filter zero total shares

src/trading/journal.py

@@ -475,7 +475,10 @@ def get_open_trades_summary() -> dict:
         query = """
             SELECT 
                 ticker,
-                sum(shares) as total_shares,
+                sum(CASE 
+                    WHEN direction = 'sell' THEN -shares 
+                    ELSE shares 
+                END) as total_shares,
                 avg(entry_price) as avg_entry_price,
                 min(entry_date) as first_entry,
                 max(entry_date) as last_entry,
@@ -484,6 +487,7 @@ def get_open_trades_summary() -> dict:
             FROM stock_db.trades 
             WHERE exit_price IS NULL 
             GROUP BY ticker
+            HAVING total_shares > 0
             ORDER BY ticker ASC
         """
         print(f"Executing summary query: {query}")  # Debug