Revert "feat: add side-by-side comparison, SVG confidence ring, character card animations, sparkles, floating effect, stagger top-3, report v2, referencia endpoint, personaje endpoint"

feat: add side-by-side comparison, SVG confidence ring, character card animations, sparkles, floating effect, stagger top-3, report v2, referencia endpoint, personaje endpoint

Fase 11: Quick fixes + Tests + Estructura

Fix: restore proper .gitattributes with LFS rules, bust Docker cache

Deploy: Sanrio Classifier v1 (ResNet18 + FastAPI)