feat(library and playback): Support for serverside channel plugins and hls streaming

src-tauri/src/repository/mod.rs

@@ -117,6 +117,19 @@ pub trait MediaRepository: Send + Sync {
     /// @req: JA-007 - Get playback info and stream URL
     async fn get_audio_stream_url(&self, item_id: &str) -> Result<String, RepoError>;
 
+    /// Get Live TV channels (broadcast / IPTV) for browsing.
+    async fn get_live_tv_channels(&self) -> Result<Vec<MediaItem>, RepoError>;
+
+    /// Get the root list of plugin "Channels" (Jellyfin Channels feature).
+    /// Drill-down into a channel reuses `get_items(channel_id, ...)`.
+    async fn get_channels(&self) -> Result<SearchResult, RepoError>;
+
+    /// Open a live stream (Live TV channel or live channel item) for playback.
+    ///
+    /// Returns the server transcoding URL plus identifiers needed to manage the
+    /// stream. Required before a live channel can be played over HLS.
+    async fn open_live_stream(&self, item_id: &str) -> Result<LiveStreamInfo, RepoError>;
+
     /// Report playback start
     ///
     /// @req: UR-025 - Sync watch history and progress back to Jellyfin