Fix autorestore logic and protocol badge per device type

Autorestore fixes:
- Snapshot WLED state before connect() mutates it (lor, AudioReactive)
- Gate restore on auto_shutdown setting (was unconditional)
- Remove misleading auto_restore capability from serial provider
- Default auto_shutdown to false for all new devices

Protocol badge fixes:
- Show correct protocol per device type (OpenRGB SDK, MQTT, WebSocket)
- Was showing "Serial" for all non-WLED devices

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

TODO.md

@@ -33,7 +33,7 @@ Priority: `P1` quick win · `P2` moderate · `P3` large effort
 - [ ] `P2` **WebSocket event bus** — Broadcast all state changes over a single WS channel
   - Complexity: low-medium — ProcessorManager already emits events; add a WS endpoint that fans out JSON events to connected clients
   - Impact: medium — enables real-time dashboards, mobile apps, and third-party integrations
-- [ ] `P3` **Notification reactive** — Flash/pulse on OS notifications (optional app filter)
+- [x] `P3` **Notification reactive** — Flash/pulse on OS notifications (optional app filter)
   - Complexity: large — OS-level notification listener (platform-specific: Win32 `WinToast`/`pystray`, macOS `pyobjc`); needs a new "effect source" type that triggers color pulses
   - Impact: low-medium — fun but niche; platform-dependent maintenance burden
 
@@ -60,4 +60,4 @@ Priority: `P1` quick win · `P2` moderate · `P3` large effort
   - Impact: medium-high — essential for setups with many devices/targets; enables quick filtering (e.g. "bedroom", "desk", "gaming")
 - [x] `P3` **PWA / mobile layout** — Mobile-first layout + "Add to Home Screen" manifest
 - [ ] `P1` **Collapse dashboard running target stats** — Show only FPS chart by default; uptime, errors, and pipeline timings in an expandable section collapsed by default
-- [ ] `P1` **Review protocol badge on LED target cards** — Review and improve the protocol badge display on LED target cards
+- [x] `P1` **Review protocol badge on LED target cards** — Review and improve the protocol badge display on LED target cards