refactor(ui): remove search, theme toggle, and notifications from header

src/components/layout/Header.tsx

@@ -1,13 +1,8 @@
 /**
  * Header Component
- * Top navigation bar with search and actions
+ * Top navigation bar with page title
  */
-import { useState } from 'react';
 import { useLocation } from 'react-router-dom';
-import { Search, Bell, Moon, Sun, Monitor } from 'lucide-react';
-import { Button } from '@/components/ui/button';
-import { Input } from '@/components/ui/input';
-import { useSettingsStore } from '@/stores/settings';
 
 // Page titles mapping
 const pageTitles: Record<string, string> = {
@@ -21,54 +16,13 @@ const pageTitles: Record<string, string> = {
 
 export function Header() {
   const location = useLocation();
-  const theme = useSettingsStore((state) => state.theme);
-  const setTheme = useSettingsStore((state) => state.setTheme);
-  
-  const [searchQuery, setSearchQuery] = useState('');
   
   // Get current page title
   const currentTitle = pageTitles[location.pathname] || 'ClawX';
   
-  // Cycle through themes
-  const cycleTheme = () => {
-    const themes: Array<'light' | 'dark' | 'system'> = ['light', 'dark', 'system'];
-    const currentIndex = themes.indexOf(theme);
-    const nextIndex = (currentIndex + 1) % themes.length;
-    setTheme(themes[nextIndex]);
-  };
-  
-  // Get theme icon
-  const ThemeIcon = theme === 'light' ? Sun : theme === 'dark' ? Moon : Monitor;
-  
   return (
-    <header className="flex h-14 items-center justify-between border-b bg-background px-6">
-      {/* Page Title */}
+    <header className="flex h-14 items-center border-b bg-background px-6">
       <h2 className="text-lg font-semibold">{currentTitle}</h2>
-      
-      {/* Actions */}
-      <div className="flex items-center gap-2">
-        {/* Search */}
-        <div className="relative">
-          <Search className="absolute left-2.5 top-2.5 h-4 w-4 text-muted-foreground" />
-          <Input
-            type="search"
-            placeholder="Search..."
-            className="w-64 pl-9"
-            value={searchQuery}
-            onChange={(e) => setSearchQuery(e.target.value)}
-          />
-        </div>
-        
-        {/* Theme Toggle */}
-        <Button variant="ghost" size="icon" onClick={cycleTheme}>
-          <ThemeIcon className="h-5 w-5" />
-        </Button>
-        
-        {/* Notifications */}
-        <Button variant="ghost" size="icon">
-          <Bell className="h-5 w-5" />
-        </Button>
-      </div>
     </header>
   );
 }