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