fix: resolve OpenCV 5.0.0 blobFromImage colorSpace signature compatibility issue for emotion detection

fix: improve webcam startup UX with immediate raw video preview and resolve pacing deadlock with a timeout fallback

feat: add support for detecting weapons and dangerous objects (knife, gun, pistol, fire, smoke, etc.)

fix: resolve page scroll jump, optimize camera feed with server-paced frame flow, and add camera device selector

chore: run download_models.py during Docker build step

chore: add libegl1 and libgbm1 dependencies to Dockerfile

chore: add libgles2 and git system dependencies to Dockerfile

chore: fix README.md YAML colors for Hugging Face

chore: add root README.md with Hugging Face configuration metadata

chore: add Dockerfile for Hugging Face Spaces deployment

chore: add Netlify configuration file

feat: integrate Supabase DB and add Render blueprint configuration