* fix(gradium): treat blank env API key as unconfigured in synthesis paths
The isGradiumProviderConfigured helper already uses trimToUndefined on
GRADIUM_API_KEY, but synthesize and synthesizeTelephony still used the
bare env var. This made whitespace-only credentials pass the
missing-key guard and send unusable bearer tokens.
- Wrap process.env.GRADIUM_API_KEY with trimToUndefined in synthesize
- Wrap process.env.GRADIUM_API_KEY with trimToUndefined in
synthesizeTelephony
- Add test for whitespace-only env key rejection in synthesize
This completes the blank-credential guard for the Gradium provider,
matching the pattern from OpenAI (#108212), Xiaomi (#108558),
Deepgram (#108565), and Inworld (#108783).
Co-Authored-By: Claude <noreply@anthropic.com>
* fix(gradium): centralize speech API key resolution
---------
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
Adds the Gradium bundled plugin with TTS and speech-provider registration, docs, label routing, and focused/live coverage.
Also carries the current main lint cleanup needed for the rebased CI lane.
Co-authored-by: laurent <laurent.mazare@gmail.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Peter Steinberger