[BUG] Deepgram TTS Provider Missing listModels - Cannot Select Model

[CarlPremium]

Describe the bug

The Deepgram TTS provider is missing the listModels capability, preventing users from selecting a model and using the provider.

Current behavior:
 - Model dropdown is empty (shows "Select a default model from the provider")
 - Clicking "Test" shows error: Error: No model selected
 - Deepgram TTS is unusable even with valid API key

Expected behavior:
 - Model dropdown should show: Aura 2, Aura 1, Aura (Legacy)
 - Users can select model + voice and generate speech successfully

---

Root Cause:

File: packages/stage-ui/src/stores/providers.ts (Deepgram provider ~line 939)

The provider has listVoices but is missing listModels capability. UI checks for this to display model options.

---

Fix:

Add listModels to Deepgram provider capabilities:

  1 listModels: async () => {
  2   return [
  3     {
  4       id: 'aura-2',
  5       name: 'Aura 2',
  6       provider: 'deepgram-tts',
  7       description: 'Latest generation Aura model',
  8       contextLength: 0,
  9       deprecated: false,
 10     },
 11     {
 12       id: 'aura-1',
 13       name: 'Aura 1',
 14       provider: 'deepgram-tts',
 15       description: 'First generation Aura model',
 16       contextLength: 0,
 17       deprecated: false,
 18     },
 19     {
 20       id: 'aura',
 21       name: 'Aura (Legacy)',
 22       provider: 'deepgram-tts',
 23       description: 'Original Aura model',
 24       contextLength: 0,
 25       deprecated: true,
 26     },
 27   ]
 28 },

---

Testing:

 1. Go to Settings → Modules → Speech
 2. Select Deepgram provider
 3. Verify model dropdown shows 3 models
 4. Select model + voice, test speech generation
 5. Should work without errors

---

System Info

System:
    OS: Windows 11 10.0.26200
    CPU: (12) x64 12th Gen Intel(R) Core(TM) i5-12450HX
    Memory: 2.97 GB / 15.71 GB
  Binaries:
    Node: 24.13.1 - C:\Program Files\nodejs\node.EXE
    npm: 11.8.0 - C:\Program Files\nodejs\npm.CMD
    pnpm: 10.30.3 - C:\Users\Usuario\AppData\Local\pnpm\pnpm.CMD
  Browsers:
    Chrome: 145.0.7632.117
    Edge: Chromium (140.0.3485.66)

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)