fix: initial balance calculation and UI improvements

- Fix initial balance using available_balance instead of total_equity
- Fix WSMonitor nil pointer by starting market monitor before loading traders
- Add strategy name display on traders list and dashboard pages
- Various position sync and trading improvements

web/src/App.tsx

@@ -807,7 +807,7 @@ function TraderDetailsPage({
           )}
         </div>
         <div
-          className="flex items-center gap-4 text-sm"
+          className="flex items-center gap-4 text-sm flex-wrap"
           style={{ color: '#848E9C' }}
         >
           <span>
@@ -826,6 +826,20 @@ function TraderDetailsPage({
               )}
             </span>
           </span>
+          <span>•</span>
+          <span>
+            Exchange:{' '}
+            <span className="font-semibold" style={{ color: '#EAECEF' }}>
+              {selectedTrader.exchange_id?.toUpperCase() || 'N/A'}
+            </span>
+          </span>
+          <span>•</span>
+          <span>
+            Strategy:{' '}
+            <span className="font-semibold" style={{ color: '#F0B90B' }}>
+              {selectedTrader.strategy_name || 'No Strategy'}
+            </span>
+          </span>
           {status && (
             <>
               <span>•</span>