feat: The Other Dude v9.0.1 — full-featured email system

ci: add GitHub Pages deployment workflow for docs site

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/hooks/useSimpleConfig.ts

@@ -0,0 +1,39 @@
+/**
+ * useSimpleConfigMode -- Per-device Simple/Standard mode toggle with localStorage persistence.
+ *
+ * Each device independently stores its mode preference. Default is 'standard' (opt-in to Simple).
+ */
+
+import { useState, useCallback } from 'react'
+
+const STORAGE_KEY = 'mikrotik-simple-mode'
+
+type ConfigMode = 'simple' | 'standard'
+
+function readPrefs(): Record<string, ConfigMode> {
+  try {
+    const stored = localStorage.getItem(STORAGE_KEY)
+    return stored ? (JSON.parse(stored) as Record<string, ConfigMode>) : {}
+  } catch {
+    return {}
+  }
+}
+
+export function useSimpleConfigMode(deviceId: string) {
+  const [mode, setMode] = useState<ConfigMode>(() => {
+    const prefs = readPrefs()
+    return prefs[deviceId] ?? 'standard'
+  })
+
+  const toggleMode = useCallback(
+    (newMode: ConfigMode) => {
+      setMode(newMode)
+      const prefs = readPrefs()
+      prefs[deviceId] = newMode
+      localStorage.setItem(STORAGE_KEY, JSON.stringify(prefs))
+    },
+    [deviceId],
+  )
+
+  return { mode, toggleMode }
+}