feat/azure-asr-support

[ismailariyan]

Summary

Add Azure STT (Speech-to-Text) support using Azure's Fast Transcription REST API. This is a minimal, non-breaking addition that follows the existing ASR provider pattern.

Changes

• lib/audio/types.ts: Add azure-asr to ASRProviderId union type
• lib/audio/constants.ts: Add Azure provider configuration with supported languages and formats
• lib/audio/asr-providers.ts: Implement transcribeAzureASR() function for Fast Transcription API
• lib/store/settings.ts: Add azure-asr to default ASR config
• lib/i18n/settings.ts: Add zh-CN and en-US translations for "Azure STT"
• lib/server/provider-config.ts: Add ASR_AZURE env mapping
• components/settings/audio-settings.tsx: Add Azure to provider name map
• components/settings/index.tsx: Add Azure to provider name map
• .env.example: Add ASR_AZURE_API_KEY and ASR_AZURE_BASE_URL

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)
• CI/CD or build changes

Verification

Steps to reproduce / test

1. Configure ASR_AZURE_API_KEY and ASR_AZURE_BASE_URL in .env (e.g., https://eastus2.stt.speech.microsoft.com or https://eastus2.api.cognitive.microsoft.com)
2. Select "Azure STT" as the ASR provider in settings
3. Record audio using the microphone button

What you personally verified

• Azure URL backward compatibility (old .stt.speech.microsoft.com format auto-converts to new .api.cognitive.microsoft.com format)
• WebM audio format works with Azure Fast Transcription API
• Language selection passes correct locale to Azure API
• Error messages display correctly when API key or URL is misconfigured

Evidence

• Uses Azure Fast Transcription API v2025-10-15
• Supports WebM, OGG, WAV, MP3, FLAC, M4A formats
• Supports 12 languages: zh, en, ja, ko, de, fr, es, it, pt, ru, ar, hi

Checklist

• My code follows the project's coding style
• I have performed a self-review of my code
• I have added/updated documentation as needed
• My changes do not introduce new warnings
• CI passes (pnpm check && pnpm lint && npx tsc --noEmit)
• Manually tested locally
• Screenshots / recordings attached (if UI changes)

[wyuc]

Settings page crashes when Azure STT is selected — asrProvider.models is undefined.

Add models: [] and defaultModelId: '' to the azure-asr config in constants.ts. Other providers without model selection (like browser-native) declare these explicitly.

[ismailariyan]

Settings page crashes when Azure STT is selected — asrProvider.models is undefined.

Add models: [] and defaultModelId: '' to the azure-asr config in constants.ts. Other providers without model selection (like browser-native) declare these explicitly.

i have fixd the bug, @wyuc

[wyuc]

Hey @ismailariyan, fix looks right, settings page no longer crashes (verified locally). Branch is behind main now with merge conflicts. Could you rebase onto main and resolve? Once CI is green I'll approve and merge.

[ismailariyan]

@wyuc I have rebased it on main and resolved the merge conflicts.
All the CI is passed now

[wyuc]

LGTM. Fix is correct, crash-on-Azure-STT verified locally as fixed, CI green post-rebase. Thanks for the contribution and the patience through the long delay.