Add episode queueing picker and configurable mpv video output

Activating an episode now opens a scope picker (episode / season / whole
show) and plays the chosen queue back-to-back in one mpv instance, with
only the first item honoring its resume position. A new mpv `vo` driver
setting (CLI flag, env var, config file, and settings TUI) lets users
opt into terminal-based vos like sixel/kitty/tct, which auto-enable
mpv's terminal input so playback keys still work.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

src/emby.rs

@@ -59,6 +59,10 @@ pub struct Item {
     pub runtime_ticks: Option<i64>,
     #[serde(rename = "SeriesName", default)]
     pub series_name: Option<String>,
+    /// Set for Episode items. Lets us fetch the full series episode list so a
+    /// queue started mid-show can continue past the current season.
+    #[serde(rename = "SeriesId", default)]
+    pub series_id: Option<String>,
     #[serde(rename = "IndexNumber", default)]
     pub index_number: Option<i32>,
     #[serde(rename = "ParentIndexNumber", default)]
@@ -223,6 +227,29 @@ impl Client {
         Ok(resp.items)
     }
 
+    /// All episodes for a series, in playback order (season, then episode).
+    /// Used to build a multi-season playback queue starting from any episode.
+    pub async fn series_episodes(&self, series_id: &str) -> Result<Vec<Item>> {
+        let url = format!("{}/Shows/{}/Episodes", self.server, series_id);
+        let resp: ItemsResponse = self
+            .http
+            .get(&url)
+            .headers(self.headers())
+            .query(&[
+                ("UserId", self.user_id.as_str()),
+                (
+                    "Fields",
+                    "ProductionYear,RunTimeTicks,SeriesName,UserData",
+                ),
+            ])
+            .send()
+            .await?
+            .error_for_status()?
+            .json()
+            .await?;
+        Ok(resp.items)
+    }
+
     pub fn stream_url(&self, item_id: &str) -> String {
         format!(
             "{}/Videos/{}/stream?Static=true&api_key={}&DeviceId={}",