- Introduced a new endpoint `POST /api/catchup/sessions/<session_id>/position/` for native clients to report their playhead position and pause state during catch-up sessions.
- Updated the catch-up session handling to include a `paused` flag, allowing accurate tracking of playback state without seeking the provider stream.
- Enhanced the Redis storage mechanism to accommodate the new position and pause data, ensuring real-time updates for admin stats.
- Added tests to validate the new position reporting functionality and its integration with existing catch-up features.
Add end-to-end catch-up support for XC clients and native apps: provider
proxy with failover and per-viewer session pooling, REST session minting
for tokenless playback URLs, catch-up admin stats, combined connection
stats, and Stats UI with dedicated cards plus websocket updates.
Includes Redis namespace consolidation under timeshift:* (dropping legacy
timeshift_ id prefixes), dedicated catch-up stop by session_id, and
cleaner channel/client metadata split for stats keys.
Closes#133
