Privacy Mode feature:
- Toggle in Admin > Settings enables automatic purge of download
history, session logs, and files after configurable retention period
- Default retention: 24 hours when privacy mode is on
- Configurable 1-8760 hours via number input
- When enabled, starts purge scheduler (every 30 min) if not running
- When disabled, data persists indefinitely
Admin panel consolidation:
- Removed separate 'Purge' tab — manual purge moved to Settings
- Settings tab order: Privacy Mode > Manual Purge > Welcome Message >
Output Formats > Change Password
- Toggle switch UI with accent color and smooth animation
- Retention input with left accent border and unit label
Backend:
- PurgeConfig: added privacy_mode (bool) and privacy_retention_hours
- Purge service: uses privacy_retention_hours when privacy mode active
- PUT /admin/settings: accepts privacy_mode + privacy_retention_hours
- GET /config/public: exposes privacy settings to frontend
- Runtime overrides passed to purge service via config._runtime_overrides
URL preview & playlist support:
- POST /url-info endpoint extracts metadata (title, type, entry count)
- Preview box shows playlist contents before downloading (up to 10 items)
- Auto-detect audio-only sources (SoundCloud, etc) and switch to Audio mode
- Video toggle grayed out for audio-only sources
- Enable playlist downloading (noplaylist=False)
Admin panel improvements:
- Expandable session rows show per-session job list with filename, size,
status, timestamp, and source URL link
- GET /admin/sessions/{id}/jobs endpoint for session job details
- Logout now redirects to home page instead of staying on login form
- Logo in header is clickable → navigates to home
UX polish:
- Tooltips on output format chips (explains Auto vs specific formats)
- Format tooltips change based on video/audio mode
