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,
         }
     }
 }

k-tv-backend/domain/src/entities.rs

@@ -226,9 +226,16 @@ pub struct MediaItem {
     pub title: String,
     pub content_type: ContentType,
     pub duration_secs: u32,
+    pub description: Option<String>,
     pub genres: Vec<String>,
     pub year: Option<u16>,
     pub tags: Vec<String>,
+    /// For episodes: the parent TV show name.
+    pub series_name: Option<String>,
+    /// For episodes: season number (1-based).
+    pub season_number: Option<u32>,
+    /// For episodes: episode number within the season (1-based).
+    pub episode_number: Option<u32>,
 }
 
 /// A fully resolved 48-hour broadcast program for one channel.

k-tv-backend/infra/src/jellyfin.rs

@@ -65,7 +65,7 @@ impl IMediaProvider for JellyfinMediaProvider {
 
         let mut params: Vec<(&str, String)> = vec![
             ("Recursive", "true".into()),
-            ("Fields", "Genres,Tags,RunTimeTicks,ProductionYear".into()),
+            ("Fields", "Genres,Tags,RunTimeTicks,ProductionYear,Overview".into()),
         ];
 
         if let Some(ct) = &filter.content_type {
@@ -198,12 +198,23 @@ struct JellyfinItem {
     item_type: String,
     #[serde(rename = "RunTimeTicks")]
     run_time_ticks: Option<i64>,
+    #[serde(rename = "Overview")]
+    overview: Option<String>,
     #[serde(rename = "Genres")]
     genres: Option<Vec<String>>,
     #[serde(rename = "ProductionYear")]
     production_year: Option<u16>,
     #[serde(rename = "Tags")]
     tags: Option<Vec<String>>,
+    /// TV show name (episodes only)
+    #[serde(rename = "SeriesName")]
+    series_name: Option<String>,
+    /// Season number (episodes only)
+    #[serde(rename = "ParentIndexNumber")]
+    parent_index_number: Option<u32>,
+    /// Episode number within the season (episodes only)
+    #[serde(rename = "IndexNumber")]
+    index_number: Option<u32>,
 }
 
 // ============================================================================
@@ -238,8 +249,12 @@ fn map_jellyfin_item(item: JellyfinItem) -> Option<MediaItem> {
         title: item.name,
         content_type,
         duration_secs,
+        description: item.overview,
         genres: item.genres.unwrap_or_default(),
         year: item.production_year,
         tags: item.tags.unwrap_or_default(),
+        series_name: item.series_name,
+        season_number: item.parent_index_number,
+        episode_number: item.index_number,
     })
 }