fix: Resolve f-string syntax error in trading plan page format_func

src/streamlit_app.py

@@ -1205,7 +1205,7 @@ def trading_plan_page():
                                 f"{t['ticker']} - {t['entry_date']} - ${t['entry_price']:.2f} "
                                 f"({t['direction']}) - {t['strategy']} "
                                 f"{'[Closed]' if t['exit_price'] else '[Open]'} "
-                                f"{'P/L: $' + f'{t[\"profit_loss\"]:.2f}' if t['profit_loss'] is not None else ''}"
+                                f"{'P/L: $' + format(t['profit_loss'], '.2f') if t['profit_loss'] is not None else ''}"
                                 for t in available_trades if t['id'] == x
                             )
                         )