feat: lots of speech stuff

apps/desktop/src/store/notifications.ts

@@ -50,6 +50,13 @@ const ERROR_SUMMARIES: { test: (msg: string) => boolean; summarize: (msg: string
     test: msg => /neither voice_tools_openai_key nor openai_api_key is set/i.test(msg),
     summarize: () => 'OpenAI TTS needs VOICE_TOOLS_OPENAI_KEY or OPENAI_API_KEY.'
   },
+  {
+    test: msg => /ELEVENLABS_API_KEY not set/i.test(msg) || /ElevenLabs STT API error \(HTTP 401\)/i.test(msg),
+    summarize: msg =>
+      /ELEVENLABS_API_KEY not set/i.test(msg)
+        ? 'ElevenLabs STT needs ELEVENLABS_API_KEY.'
+        : 'ElevenLabs rejected the API key (401).'
+  },
   {
     test: msg => /method not allowed/i.test(msg),
     summarize: () => 'The desktop backend does not support that audio endpoint yet. Restart Hermes Desktop.'

apps/desktop/src/store/voice-playback.ts

@@ -0,0 +1,22 @@
+import { atom } from 'nanostores'
+
+export type VoicePlaybackSource = 'read-aloud' | 'voice-conversation'
+export type VoicePlaybackStatus = 'idle' | 'preparing' | 'speaking'
+
+export interface VoicePlaybackState {
+  messageId: string | null
+  sequence: number
+  source: VoicePlaybackSource | null
+  status: VoicePlaybackStatus
+}
+
+export const $voicePlayback = atom<VoicePlaybackState>({
+  messageId: null,
+  sequence: 0,
+  source: null,
+  status: 'idle'
+})
+
+export function setVoicePlaybackState(next: VoicePlaybackState) {
+  $voicePlayback.set(next)
+}