fix(radarr): model the download status as a DownloadStatus enum

Radarr was the only tree still holding DownloadRecord.status as a bare
String and comparing it against literals. It now carries its own
DownloadStatus enum, shaped exactly like the Sonarr, Lidarr and Readarr
copies, and is guarded with from_json_or_default so an unrecognised
status degrades to Unknown instead of failing the whole queue fetch.

The row-style decorator and get_movie_status compare against the enum
variants. The status cell is never rendered in the Radarr tree, so no
snapshot changes; the CLI JSON output is unchanged for every real value
since the enum serializes to the same camelCase strings.

src/models/radarr_models.rs

@@ -154,7 +154,8 @@ pub struct DeleteMovieParams {
 #[serde(rename_all = "camelCase")]
 pub struct DownloadRecord {
   pub title: String,
-  pub status: String,
+  #[serde(deserialize_with = "super::from_json_or_default")]
+  pub status: DownloadStatus,
   #[serde(deserialize_with = "super::from_i64")]
   pub id: i64,
   #[serde(deserialize_with = "super::from_i64")]
@@ -169,6 +170,36 @@ pub struct DownloadRecord {
   pub download_client: String,
 }
 
+#[derive(
+  Serialize,
+  Deserialize,
+  Default,
+  PartialEq,
+  Eq,
+  Clone,
+  Copy,
+  Debug,
+  EnumIter,
+  Display,
+  EnumDisplayStyle,
+)]
+#[serde(rename_all = "camelCase")]
+#[strum(serialize_all = "camelCase")]
+pub enum DownloadStatus {
+  #[default]
+  Unknown,
+  Queued,
+  Paused,
+  Downloading,
+  Completed,
+  Failed,
+  Warning,
+  Delay,
+  #[display_style(name = "Download Client Unavailable")]
+  DownloadClientUnavailable,
+  Fallback,
+}
+
 #[derive(Default, Clone, Serialize, Deserialize, Debug, PartialEq, Eq)]
 #[serde(rename_all = "camelCase")]
 pub struct DownloadsResponse {