Release Notes v1.3
This release adds a new popup-based settings panel so users can turn Better Firefox features on or off without editing code or reinstalling the extension.

Highlights
- Added a browser action popup for managing extension settings
- Added per-feature toggles for:
- Copy URL shortcut
- Tab unload shortcut
- WhatsApp privacy mode
- Slack markdown formatter
- Updated keyboard shortcut handling so disabled features no longer intercept shortcuts
- Connected background/content scripts to saved feature flags for live behavior control
- Improved Slack markdown checkbox parsing to support more checkbox formats
- Made WhatsApp privacy mode fully toggleable from settings, including cleanup when disabled

New
- Added a WhatsApp privacy mode with an on-screen toggle (Privacy: ON/OFF).
- Privacy mode blurs:
- Contact name
- Last message preview
- Profile/contact image in chat list
- Open chat header name and image
Behavior
- Hovering a blurred chat row/header temporarily reveals content (unblur on hover).
- Privacy state is persistent across refresh/reopen (saved locally in extension storage).
- Privacy styling is reapplied automatically as WhatsApp updates its UI dynamically.
Internal
- Added extension storage permission to support saved toggle state.
- Added observer-based reapplication logic for dynamic WhatsApp DOM updates