feat: enhance MediaItem with additional episode details and update ChannelInfo component

k-tv-backend/api/src/dto.rs

@@ -110,9 +110,13 @@ pub struct MediaItemResponse {
     pub title: String,
     pub content_type: domain::ContentType,
     pub duration_secs: u32,
+    pub description: Option<String>,
     pub genres: Vec<String>,
     pub year: Option<u16>,
     pub tags: Vec<String>,
+    pub series_name: Option<String>,
+    pub season_number: Option<u32>,
+    pub episode_number: Option<u32>,
 }
 
 impl From<domain::MediaItem> for MediaItemResponse {
@@ -122,9 +126,13 @@ impl From<domain::MediaItem> for MediaItemResponse {
             title: i.title,
             content_type: i.content_type,
             duration_secs: i.duration_secs,
+            description: i.description,
             genres: i.genres,
             year: i.year,
             tags: i.tags,
+            series_name: i.series_name,
+            season_number: i.season_number,
+            episode_number: i.episode_number,
         }
     }
 }