Adds 'speech-sdk' as a fifth built-in TTS provider backed by @speech-sdk/core
(Apache 2.0). Models use the provider/model format; requests go from the
server directly to the provider's API with the user's own key. Existing
providers, defaults, and config are untouched.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Align non-kokoro custom-openai models to use the canonical OpenAI voice set
instead of a separate custom set. Updates logic and tests to reflect this
standardization for improved consistency across OpenAI-compatible providers.
Implement logic to resolve and inject Replicate Kokoro model-specific language
codes based on language tag and voice, using new mapping utilities. Update
`buildReplicateInput` to set `language_code` for the built-in Kokoro model.
Expand language utilities with code mapping and expose `resolveReplicateKokoroLanguageCode`.
Enhance tests to cover language code resolution and input mapping for Replicate
Kokoro, and verify language input key discovery for built-in models.
Move provider normalization logic into a dedicated module to ensure consistent
handling of provider defaults and user preference inheritance across client and
server. Update layout components to mount ConfigProvider only at the shared
layout level, preventing unnecessary remounts and hydration issues during
navigation. Adjust app config defaults so user provider settings are empty by
default, always inheriting the admin-configured provider unless explicitly set.
Add tests for normalization and sync logic to ensure robust provider resolution.
