feat(electron): add Electron UI components and layout integration

dashboard/src/hooks/useWindowControls.ts

@@ -0,0 +1,30 @@
+import { useCallback, useEffect, useState } from 'react'
+
+import { isElectron } from '@/lib/runtime'
+
+export function useWindowControls() {
+  const [isMaximized, setIsMaximized] = useState(false)
+
+  useEffect(() => {
+    if (!isElectron()) return
+    
+    const api = window.electronAPI
+    if (!api) return
+
+    api.isMaximized().then(setIsMaximized)
+    
+    const unsubMax = api.onWindowMaximized(() => setIsMaximized(true))
+    const unsubUnmax = api.onWindowUnmaximized(() => setIsMaximized(false))
+    
+    return () => {
+      unsubMax?.()
+      unsubUnmax?.()
+    }
+  }, [])
+
+  const minimize = useCallback(() => window.electronAPI?.minimizeWindow(), [])
+  const toggleMaximize = useCallback(() => window.electronAPI?.maximizeWindow(), [])
+  const close = useCallback(() => window.electronAPI?.closeWindow(), [])
+
+  return { close, isMaximized, minimize, toggleMaximize }
+}