- Add kling-v3 and kling-v3-omni to model selector and backend validation
- Set V3 as the new default model (was V2.6)
- V3 Omni includes built-in audio generation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Integrates Kling AI as a second video engine in the Video Gen tab with
three cinema-relevant workflows: Generate (T2V/I2V with camera control),
Extend (video extension up to 3 min), and Lip Sync (image + audio).
Backend: New kling_api.php with pure PHP JWT auth, all workflows, async
status polling, and CDN video download. Env files updated with Kling
credential placeholders.
Frontend: Engine selector toggle, workflow-specific settings panels,
Kling polling, engine badges in ProjectsTab, rerun support.
Also includes image model toggle changes (Gemini Pro/Flash).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
