Add GIF/animation output for intensity progression

[dreamlessx]

What

Add the ability to generate an animated GIF or MP4 that smoothly transitions from 0% to 100% intensity for a given procedure.

Why

Animated previews are much more compelling for patient consultations and for social media / demo purposes than static images. Seeing the gradual progression makes the prediction feel more trustworthy.

Suggested approach

1. Generate frames at 2-5% intensity increments (20-50 frames)
2. Assemble into GIF using imageio or PIL
3. Optionally output MP4 via cv2.VideoWriter
4. Add --animate flag to CLI and a toggle in the Gradio demo

python scripts/run_inference.py photo.jpg \
    --procedure rhinoplasty \
    --animate \
    --output rhinoplasty_progression.gif

Considerations

• Keep frame count reasonable for TPS mode (instant per frame)
• For ControlNet mode, this is expensive — consider caching the conditioning and only re-running the diffusion
• Add a progress bar for the generation loop

Difficulty: 🟡 Intermediate