fix(ui): resolve table dark mode styling issues

- Update Table component to use bg-surface instead of hardcoded bg-white
- Fix TableRow hover and selected states to use design system tokens
- Update virtualized tables in agents, collections, and tool-search pages

packages/ui/src/Table/Table.tsx

@@ -83,9 +83,9 @@ const TableRow = forwardRef<HTMLTableRowElement, TableRowProps>(
     <tr
       ref={ref}
       className={cn(
-        'border-b border-border bg-white dark:bg-zinc-900 transition-colors',
-        interactive && 'cursor-pointer hover:bg-surface',
-        selected && 'bg-surface',
+        'border-b border-border bg-surface transition-colors',
+        interactive && 'cursor-pointer hover:bg-surface-secondary',
+        selected && 'bg-surface-secondary',
         className
       )}
       {...props}