chore: clean .gitignore cache

frontend/src/components/ThemeToggle.tsx

@@ -1,12 +0,0 @@
-import { useTheme } from '../hooks/useTheme'
-import { Button } from './ui/Button'
-
-export function ThemeToggle() {
-  const { theme, toggleTheme } = useTheme()
-
-  return (
-    <Button variant="ghost" size="sm" onClick={toggleTheme} title={`Switch to ${theme === 'dark' ? 'light' : 'dark'} mode`}>
-      {theme === 'dark' ? '☀️' : '🌙'}
-    </Button>
-  )
-}