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Polish UI: styled header, procedure descriptions, photo tips, cleaner info output

Fix slider performance and version string

Add facial symmetry analysis tab

Clean up demo: real faces, simplified UI, remove bloat

Fix distortion: return original image instead of stretched hstack

Fix side-by-side before/after output in Single Procedure tab

Fix image distortion: preserve aspect ratio, remove stretched side-by-side

Restore side-by-side output, add aspect-ratio-preserving resize

Add example images, procedure details, status indicators, usage tracking

Add error handling, sync package from public repo, auto-trigger on upload

Fix Gradio API crash, render_wireframe args, add brow_lift/mentoplasty masks

enhance demo UI with procedure info and links

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