feat: include duration in YouTube entry metadata

tests/unit/app.rs

@@ -2993,7 +2993,8 @@ fn video_channel_colors_follow_category_membership_and_preserve_selection_contra
         &serde_json::json!({
             "entries": cases.iter().map(|(channel, id, handle, _)| serde_json::json!({
                 "id": "jNQXAC9IVRw", "title": "Video title", "channel": channel,
-                "channel_id": id, "uploader_id": handle, "upload_date": "20261011"
+                "channel_id": id, "uploader_id": handle, "upload_date": "20261011",
+                "duration": 3723.5
             })).collect::<Vec<_>>()
         })
         .to_string(),
@@ -3028,6 +3029,10 @@ fn video_channel_colors_follow_category_membership_and_preserve_selection_contra
             assert!(title.contains("Video title"));
             let date_x = row.find("2026-10-11").expect("date follows channel") as u16;
             assert!(row.contains(&format!("{label} · 2026-10-11")));
+            assert!(
+                row.contains(" · 1:02:03"),
+                "duration is visible in metadata"
+            );
             assert_eq!(buffer[(3, y - 1)].fg, Color::Reset, "title stays uncolored");
             assert_eq!(buffer[(date_x, y)].fg, Color::Reset, "date stays uncolored");
             assert!(
@@ -5152,6 +5157,7 @@ fn modal_keys_edit_or_navigate_without_submitting_on_escape() {
             channel_id: None,
             uploader_id: None,
             timestamp: None,
+            duration: None,
             publication_date: None,
             availability: None,
         },
@@ -5162,6 +5168,7 @@ fn modal_keys_edit_or_navigate_without_submitting_on_escape() {
             channel_id: None,
             uploader_id: None,
             timestamp: None,
+            duration: None,
             publication_date: None,
             availability: None,
         },

tests/unit/video_state.rs

@@ -34,6 +34,7 @@ fn video() -> Video {
         channel_id: Some("UC4QobU6STFB0P71PMvOGN5A".into()),
         uploader_id: Some("@jawed".into()),
         timestamp: Some(1_114_300_000),
+        duration: Some(19.0),
         publication_date: Some("2005-04-23".into()),
         availability: None,
     }
@@ -66,6 +67,7 @@ fn miruro_video(episode: u32) -> Video {
         channel_id: None,
         uploader_id: None,
         timestamp: Some(1_114_300_000),
+        duration: None,
         publication_date: Some("2005-04-23".into()),
         availability: None,
     }