Use OpenAI voices for desktop TTS

Make OpenAI Onyx the default desktop response voice, remove desktop ElevenLabs TTS wiring, and rename the local voice label.

Author: kodjima33

.github/workflows/desktop_auto_release.yml

@@ -85,7 +85,6 @@ jobs:
             ANTHROPIC_API_KEY=DESKTOP_ANTHROPIC_API_KEY:latest
             DESKTOP_LEGACY_ANTHROPIC_KEY=DESKTOP_LEGACY_ANTHROPIC_KEY:latest
             GOOGLE_CALENDAR_API_KEY=DESKTOP_GOOGLE_CALENDAR_API_KEY:latest
-            ELEVENLABS_API_KEY=DESKTOP_ELEVENLABS_API_KEY:latest
 
   deploy-desktop-backend-prod:
     needs: deploy-desktop-backend
@@ -150,7 +149,6 @@ jobs:
             ANTHROPIC_API_KEY=DESKTOP_ANTHROPIC_API_KEY:latest
             DESKTOP_LEGACY_ANTHROPIC_KEY=DESKTOP_LEGACY_ANTHROPIC_KEY:latest
             GOOGLE_CALENDAR_API_KEY=DESKTOP_GOOGLE_CALENDAR_API_KEY:latest
-            ELEVENLABS_API_KEY=DESKTOP_ELEVENLABS_API_KEY:latest
 
   tag-release:
     needs: [deploy-desktop-backend, deploy-desktop-backend-prod]

.github/workflows/desktop_backend_auto_dev.yml

@@ -74,7 +74,6 @@ jobs:
             ANTHROPIC_API_KEY=DESKTOP_ANTHROPIC_API_KEY:latest
             DESKTOP_LEGACY_ANTHROPIC_KEY=DESKTOP_LEGACY_ANTHROPIC_KEY:latest
             GOOGLE_CALENDAR_API_KEY=DESKTOP_GOOGLE_CALENDAR_API_KEY:latest
-            ELEVENLABS_API_KEY=DESKTOP_ELEVENLABS_API_KEY:latest
 
       - name: Show Output
         run: echo "Desktop backend deployed to development environment"

desktop/Backend-Rust/charts/desktop-backend/dev_values.yaml

@@ -32,11 +32,6 @@ env:
       secretKeyRef:
         name: dev-omi-backend-secrets
         key: GEMINI_API_KEY
-  - name: ELEVENLABS_API_KEY
-    valueFrom:
-      secretKeyRef:
-        name: dev-omi-backend-secrets
-        key: ELEVENLABS_API_KEY
   - name: RESEND_API_KEY
     valueFrom:
       secretKeyRef:

desktop/Backend-Rust/charts/desktop-backend/prod_values.yaml

@@ -34,11 +34,6 @@ env:
       secretKeyRef:
         name: prod-omi-backend-secrets
         key: DEEPGRAM_API_KEY
-  - name: ELEVENLABS_API_KEY
-    valueFrom:
-      secretKeyRef:
-        name: prod-omi-backend-secrets
-        key: ELEVENLABS_API_KEY
   - name: ENCRYPTION_SECRET
     valueFrom:
       secretKeyRef:

desktop/Backend-Rust/src/config.rs

@@ -69,13 +69,8 @@ pub struct Config {
     pub anthropic_api_key: Option<String>,
     /// Legacy Anthropic key served to old desktop clients via /api-keys (deprecated; remove after major release)
     pub desktop_legacy_anthropic_key: Option<String>,
-    /// ElevenLabs API key for TTS proxy (used server-side by /v1/tts/synthesize, never served to clients)
-    pub elevenlabs_api_key: Option<String>,
     /// Google Calendar API key (served to desktop clients)
     pub google_calendar_api_key: Option<String>,
-    /// When true, omit ElevenLabs API key from /v1/config/api-keys response.
-    /// Set this after all clients have updated to use the TTS proxy (issue #6622).
-    pub disable_elevenlabs_key_response: bool,
     /// When true, route Gemini calls through Vertex AI instead of AI Studio.
     /// Uses service account auth (GOOGLE_APPLICATION_CREDENTIALS) instead of API key.
     pub use_vertex_ai: bool,
@@ -142,11 +137,7 @@ impl Config {
             agent_gcs_bucket: env::var("AGENT_GCS_BUCKET").ok(),
             anthropic_api_key: env::var("ANTHROPIC_API_KEY").ok(),
             desktop_legacy_anthropic_key: env::var("DESKTOP_LEGACY_ANTHROPIC_KEY").ok(),
-            elevenlabs_api_key: env::var("ELEVENLABS_API_KEY").ok(),
             google_calendar_api_key: env::var("GOOGLE_CALENDAR_API_KEY").ok(),
-            disable_elevenlabs_key_response: env::var("DISABLE_ELEVENLABS_KEY_RESPONSE")
-                .map(|v| v == "true" || v == "1")
-                .unwrap_or(false),
             use_vertex_ai: env::var("USE_VERTEX_AI")
                 .map(|v| v != "false" && v != "0")
                 .unwrap_or(true),

desktop/Backend-Rust/src/main.rs

@@ -36,8 +36,7 @@ use config::Config;
 use routes::{
     // Active (real traffic from current app)
     agent_routes, auth_routes, chat_completions_routes, config_routes, crisp_routes,
-    health_routes, proxy_routes, screen_activity_routes, tts_routes, updates_routes,
-    webhook_routes,
+    health_routes, proxy_routes, screen_activity_routes, updates_routes, webhook_routes,
     // Deprecated stubs (return 410 Gone — current app uses Python for all data CRUD)
     deprecated_routes,
 };
@@ -258,7 +257,6 @@ async fn main() {
         .merge(crisp_routes())
         .merge(proxy_routes())
         .merge(screen_activity_routes())
-        .merge(tts_routes())
         .merge(chat_completions_routes())
         .merge(updates_routes())
         .merge(webhook_routes())

desktop/Backend-Rust/src/models/user_settings.rs

@@ -151,8 +151,6 @@ pub struct MemorySettingsData {
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct FloatingBarSettingsData {
     pub voice_answers_enabled: Option<bool>,
-    pub elevenlabs_api_key: Option<String>,
-    pub elevenlabs_voice_id: Option<String>,
 }
 
 /// All assistant settings (response and request — all fields optional for partial updates)

desktop/Backend-Rust/src/routes/config.rs

@@ -3,7 +3,6 @@
 //
 // Keys NO LONGER served here (proxied server-side):
 //   - Gemini: /v1/proxy/gemini/* (issue #5861); Deepgram proxy removed (#7137)
-//   - ElevenLabs: /v1/tts/synthesize (issue #6622)
 //   - Anthropic: kept server-side for /v2/chat/completions proxy only (issue #6594)
 //
 // Legacy compat (explicit manager decision for backward compat):
@@ -35,7 +34,6 @@ struct ApiKeysResponse {
 /// GET /v1/config/api-keys — return non-secret config for the authenticated user
 /// NOTE: Anthropic key removed — proxied server-side via /v2/chat/completions (issue #6594)
 /// NOTE: Gemini keys proxied server-side (issue #5861); Deepgram proxy removed (#7137)
-/// NOTE: ElevenLabs key removed — proxied via /v1/tts/synthesize (issue #6622, #6827)
 async fn get_api_keys(State(state): State<AppState>, _user: AuthUser) -> Json<ApiKeysResponse> {
     Json(ApiKeysResponse {
         firebase_api_key: state.config.firebase_api_key.clone(),

desktop/Backend-Rust/src/routes/mod.rs

@@ -10,7 +10,6 @@ pub mod health;
 pub mod proxy;
 pub mod rate_limit;
 pub mod screen_activity;
-pub mod tts;
 pub mod updates;
 pub mod webhooks;
 
@@ -29,6 +28,5 @@ pub use deprecated::deprecated_routes;
 pub use health::health_routes;
 pub use proxy::proxy_routes;
 pub use screen_activity::screen_activity_routes;
-pub use tts::tts_routes;
 pub use updates::updates_routes;
 pub use webhooks::webhook_routes;