- camera_control: only kling-v1 and kling-v1-5 support it (not v3)
- For preset types (down_back etc.), config must be absent — only
'simple' type uses config fields
- camera_control and image_tail are mutually exclusive in I2V
- cfg_scale not supported by kling-v2.x models — now skipped
- duration sent as string to match API examples
- v3/v3-omni removed from camera control UI list
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>