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-character/src/App.css

@@ -1,42 +1,22 @@
-#root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
+/* Scrollbar styling for dark theme */
+::-webkit-scrollbar {
+  width: 8px;
 }
 
-.logo {
-  height: 6em;
-  padding: 1.5em;
-  will-change: filter;
-  transition: filter 300ms;
-}
-.logo:hover {
-  filter: drop-shadow(0 0 2em #646cffaa);
-}
-.logo.react:hover {
-  filter: drop-shadow(0 0 2em #61dafbaa);
+::-webkit-scrollbar-track {
+  background: #0a0a0f;
 }
 
-@keyframes logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
+::-webkit-scrollbar-thumb {
+  background: #374151;
+  border-radius: 4px;
 }
 
-@media (prefers-reduced-motion: no-preference) {
-  a:nth-of-type(2) .logo {
-    animation: logo-spin infinite 20s linear;
-  }
+::-webkit-scrollbar-thumb:hover {
+  background: #4b5563;
 }
 
-.card {
-  padding: 2em;
-}
-
-.read-the-docs {
-  color: #888;
+/* Selection color */
+::selection {
+  background: rgba(99, 102, 241, 0.3);
 }