feat: character dashboard with TTS voice preview, fix Wyoming API compat

- Add HomeAI dashboard: service status monitor, character profile manager, character editor
- Add TTS voice preview in character editor (Kokoro via OpenClaw bridge → Wyoming)
  - Custom preview text, loading/playing states, stop control, speed via playbackRate
- Fix Wyoming API breaking changes: remove `version` from TtsVoice/TtsProgram,
  use SynthesizeVoice object instead of bare string in Synthesize calls
- Vite dev server proxies /api/tts and /api/health to avoid CORS issues

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

homeai-agent/openclaw-http-bridge.py

@@ -33,7 +33,7 @@ from pathlib import Path
 import wave
 import io
 from wyoming.client import AsyncTcpClient
-from wyoming.tts import Synthesize
+from wyoming.tts import Synthesize, SynthesizeVoice
 from wyoming.audio import AudioStart, AudioChunk, AudioStop
 from wyoming.info import Info
 
@@ -135,7 +135,7 @@ class OpenClawBridgeHandler(BaseHTTPRequestHandler):
         await client.read_event()
         
         # Send Synthesize event
-        await client.write_event(Synthesize(text=text, voice=voice).event())
+        await client.write_event(Synthesize(text=text, voice=SynthesizeVoice(name=voice)).event())
         
         audio_data = bytearray()
         rate = 24000