tiny smoke test for endpoint introspection

Seedance 2.0 Text, first/last-frame, and multimodal reference video 76 cr ~EUR 0.69 Seedance 2.0 Fast Faster Seedance 2 workflow with the same multimodal options 62 cr ~EUR 0.56 Kling 3.0 3-15s video, audio and multi-shot 60 cr ~EUR 0.55 Veo 3.1 Lite Newest Veo 3.1 low-cost mode for text/image-to-video 40 cr ~EUR 0.36 Veo 3.1 Fast Google Veo 3.1 fast model 100 cr ~EUR 0.91 Sora 2 Sora 2 (10s/15s) 80 cr ~EUR 0.73