Features:
- ThemeManager with three modes (light/dark/system)
- CSS custom properties for semantic colors
- Persistent storage via chrome.storage.sync
- Real-time OS theme detection and updates
- Event subscription system for theme changes
Provides professional theming across all UI components.
System mode automatically follows OS preference.
Components:
- CentralizedLogger static class for log aggregation
- Logger class with source context (background/content/popup/options)
- Persistent storage in chrome.storage.local (up to 1000 entries)
- Log viewer UI with filtering, search, and export
- Survives service worker restarts
Critical for MV3 debugging where service workers terminate frequently.
Provides unified debugging across all extension contexts.
