feat: initial durable ESP32 voice gateway plugin + patches

- Migrates custom voice gateway from in-tree api_server.py patch to durable plugin
- Auto-restores routes after hermes update (POST /api/esp32/voice + WS /api/esp32/voice/ws)
- Includes live draft ingestion via MacMiniMCP speech_live_transcribe (Apple pipe volatile)
- Includes instant smart reply via apple_llm_quick_reply (3B ANE ~300ms, contextual not generic)
- Guard for missing ipaddress/urlparse imports that caused 500 loop (2026-07-14)
- Tools: esp32_voice_gateway_status, esp32_voice_gateway_restore
- Scripts: restore_after_update.py with 400-not-404 verification
- Installed as ~/.hermes/plugins/esp32-voice-gateway (enabled, survives hermes update)

Verified: routes present, plugin enabled, has_routes=True

hermes_plugin/plugin.yaml

@@ -0,0 +1,8 @@
+name: esp32-voice-gateway
+version: "1.0.0"
+description: "Reyna family ESP32 + iPhone Watch voice gateway - auto-restores custom api_server.py routes after hermes update (POST /api/esp32/voice + WS /api/esp32/voice/ws + live draft + Apple 3B instant reply)"
+author: "Adolfo Reyna"
+kind: standalone
+provides_tools: []
+provides_hooks:
+  - on_session_start