Revert to Popup Auth for Direct URL

Finalize cyber background and add How It Works section

Fix Google Auth popup blocked in iframes

Fix Firebase secret loading for HF Spaces

style: update theme color palette to cyan/purple and add .venv to .gitignore

Deploy

Implement authentication UI with Firebase integration and user state management

Migrate to Firebase Auth and Firestore for user management and quota tracking

Remove Firebase service account JSON configuration file

Optimize video detection pipeline performance

Initial commit (history reset)