feat: amphitheater hero with mouse-tracking robot professor, fixed particles

fix: server error

fix: increase GPU duration to 120s, prefetch FLUX weights on startup

fix: increase GPU duration to 120s, prefetch FLUX weights on startup

fix: FLUX.2-klein reajust

fix: FLUX.2-klein prompt keyword arg, image for all verdicts

feat: switch to FLUX.2-klein-4B for image generation

feat: FLUX.1-schnell image generation after correct answers