AI text detection extension - works entirely offline

Features:
- Highlights AI-generated text on web pages
- Color-coded scores (red/yellow/green by probability)
- Hover tooltips show which patterns matched
- Keyboard navigation (J/K keys)
- Right-click to analyze selected text
- Customizable sensitivity and appearance
- Site whitelist/blacklist
- Export results as JSON/CSV

Privacy-focused: All detection runs locally. No external APIs, no data collection.

Supports English, Spanish, German, French, Russian.