feat: unified HomeAI dashboard — merge character + desktop into single app

Combines homeai-character (service status, character profiles, editor) and
homeai-desktop (chat with voice I/O) into homeai-dashboard on port 5173.

- 4-page sidebar layout: Dashboard, Chat, Characters, Editor
- Merged Vite middleware: health checks, service restart, bridge proxy
- Bridge upgraded to ThreadingHTTPServer (fixes LAN request queuing)
- TTS strips emojis before synthesis
- Updated start.sh with new launchd service names
- Added preload-models to startup sequence

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

homeai-dashboard/src/components/SettingsDrawer.jsx

@@ -0,0 +1,74 @@
+import { VOICES } from '../lib/constants'
+
+export default function SettingsDrawer({ isOpen, onClose, settings, onUpdate }) {
+  if (!isOpen) return null
+
+  return (
+    <>
+      <div className="fixed inset-0 bg-black/50 z-40" onClick={onClose} />
+      <div className="fixed right-0 top-0 bottom-0 w-80 bg-gray-900 border-l border-gray-800 z-50 flex flex-col">
+        <div className="flex items-center justify-between px-4 py-3 border-b border-gray-800">
+          <h2 className="text-sm font-medium text-gray-200">Settings</h2>
+          <button onClick={onClose} className="text-gray-500 hover:text-gray-300">
+            <svg className="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
+              <path strokeLinecap="round" strokeLinejoin="round" d="M6 18L18 6M6 6l12 12" />
+            </svg>
+          </button>
+        </div>
+        <div className="flex-1 overflow-y-auto p-4 space-y-5">
+          {/* Voice */}
+          <div>
+            <label className="block text-xs font-medium text-gray-400 mb-1.5">Voice</label>
+            <select
+              value={settings.voice}
+              onChange={(e) => onUpdate('voice', e.target.value)}
+              className="w-full bg-gray-800 text-gray-200 text-sm rounded-lg px-3 py-2 border border-gray-700 focus:outline-none focus:border-indigo-500"
+            >
+              {VOICES.map((v) => (
+                <option key={v.id} value={v.id}>{v.label}</option>
+              ))}
+            </select>
+          </div>
+
+          {/* Auto TTS */}
+          <div className="flex items-center justify-between">
+            <div>
+              <div className="text-sm text-gray-200">Auto-speak responses</div>
+              <div className="text-xs text-gray-500">Speak assistant replies aloud</div>
+            </div>
+            <button
+              onClick={() => onUpdate('autoTts', !settings.autoTts)}
+              className={`relative w-10 h-6 rounded-full transition-colors ${
+                settings.autoTts ? 'bg-indigo-600' : 'bg-gray-700'
+              }`}
+            >
+              <span
+                className={`absolute top-0.5 left-0.5 w-5 h-5 rounded-full bg-white transition-transform ${
+                  settings.autoTts ? 'translate-x-4' : ''
+                }`}
+              />
+            </button>
+          </div>
+
+          {/* STT Mode */}
+          <div>
+            <label className="block text-xs font-medium text-gray-400 mb-1.5">Speech recognition</label>
+            <select
+              value={settings.sttMode}
+              onChange={(e) => onUpdate('sttMode', e.target.value)}
+              className="w-full bg-gray-800 text-gray-200 text-sm rounded-lg px-3 py-2 border border-gray-700 focus:outline-none focus:border-indigo-500"
+            >
+              <option value="bridge">Wyoming STT (local)</option>
+              <option value="webspeech">Web Speech API (browser)</option>
+            </select>
+            <p className="text-xs text-gray-500 mt-1">
+              {settings.sttMode === 'bridge'
+                ? 'Uses Whisper via the local bridge server'
+                : 'Uses browser built-in speech recognition'}
+            </p>
+          </div>
+        </div>
+      </div>
+    </>
+  )
+}