feat: dual address auto-switch, custom icon, notifications, image support

- Add local/remote address with automatic failover (try local first, fall back to remote)
- Replace default Expo icon with custom PAILot teal airplane icon (all variants)
- Add local notification system (ObjC native module + ChatContext integration)
- Add Wake-on-LAN as fire-and-forget (never blocks connection)
- Add image send/receive with camera and photo library picker
- Add image caption modal (WhatsApp-style full-screen preview)
- Add session drawer, theme context, and dark/light mode cycling
- Add message persistence and per-session message storage

	Notes/PAI.md	diff | view | blame | history
	Notes/TODO.md	diff | view | blame | history
	app.json	diff | view | blame | history
	app/_layout.tsx	diff | view | blame | history
	app/chat.tsx	diff | view | blame | history
	app/navigate.tsx	diff | view | blame | history
	app/settings.tsx	diff | view | blame | history
	assets/android-icon-background.png	diff | view | blame | history
	assets/android-icon-foreground.png	diff | view | blame | history
	assets/android-icon-monochrome.png	diff | view | blame | history
	assets/favicon.png	diff | view | blame | history
	assets/icon.png	diff | view | blame | history
	assets/splash-icon.png	diff | view | blame | history
	bun.lock	diff | view | blame | history
	components/SessionDrawer.tsx	diff | view | blame | history
	components/SessionPicker.tsx	diff | view | blame | history
	components/chat/CommandBar.tsx	diff | view | blame | history
	components/chat/ImageCaptionModal.tsx	diff | view | blame | history
	components/chat/ImageViewer.tsx	diff | view | blame | history
	components/chat/InputBar.tsx	diff | view | blame | history
	components/chat/MessageBubble.tsx	diff | view | blame | history
	components/chat/VoiceButton.tsx	diff | view | blame | history
	components/ui/IconButton.tsx	diff | view | blame | history
	components/ui/StatusDot.tsx	diff | view | blame | history
	contexts/ChatContext.tsx	diff | view | blame | history
	contexts/ConnectionContext.tsx	diff | view | blame | history
	contexts/ThemeContext.tsx	diff | view | blame | history
	memory/MEMORY.md	diff | view | blame | history
	package-lock.json	diff | view | blame | history
	package.json	diff | view | blame | history
	services/audio.ts	diff | view | blame | history
	services/notifications.ts	diff | view | blame | history
	services/websocket.ts	diff | view | blame | history
	services/wol.ts	diff | view | blame | history
	types/index.ts	diff | view | blame | history