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Summary

Adds a recent live channels list inside the player, reusing the existing
episodes overlay instead of introducing a new UI element. The overlay can be
opened from the episodes button or with the CH+/CH- keys, and keeps TV focus
inside the channel list.

Changes

• Persist the last 15 live channels globally, per CloudStream account.
• Record a channel only after playback actually starts.
• Show the episodes/recents button only when at least 2 channels are available.
• Switch channels in the same player and reset quality/subtitle state.
• Long-press to remove a channel, plus an option to clear all recents.
• Open the recent channels overlay with CH+/CH- (and MEDIA_NEXT/MEDIA_PREVIOUS)
  on live streams, where there is no next/previous episode.
• Move TV focus into the overlay and onto the current channel, and stop
  swallowing D-pad navigation while the overlay is open.
• Keep the standard playback error toast (error name and code, e.g. 2004)
  visible while an automatic live retry runs, with the reconnecting notice
  appended to the same toast.
• Store only the provider reference (data) and an optional pageUrl;
  never persist signed stream URLs, headers, or DRM data.
• Re-extract the current channel automatically when its link expires or fails.
• Fall back to api.load(pageUrl) when the provider reference itself is stale.
• Retry expired live links up to 2 times before surfacing the player error.

Notes

• No provider changes are required; it works with existing TvType.Live extensions.
• Live playback remains excluded from watch history and resume watching.
• The regular VOD episodes overlay is unchanged.