refactor(web): drop cast from title detail

DESIGN.md §9.6 no longer carries cast (#163). Removes the cast
sections, the MetadataCastMember schema and field from both metadata
responses, and every .cast-* rule. arr-meta keeps CastMember and the
credits append; the TMDB call is unchanged.

crates/arr-api/src/lib.rs

@@ -25,7 +25,7 @@ use utoipa_axum::routes;
 use utoipa_scalar::{Scalar, Servable};
 
 pub use health::{Check, Health, HealthReport, Status};
-pub use metadata::{MetadataCastMember, MetadataTrailer, MovieMetadata, SeriesMetadata};
+pub use metadata::{MetadataTrailer, MovieMetadata, SeriesMetadata};
 pub use movies::{
     Accepted, AttentionQueues, CreateMovie, ErrorBody, Movie, MovieFile, Release, UpdateMovie,
 };

crates/arr-api/src/metadata.rs

@@ -13,18 +13,6 @@ use crate::movies::{pool, ApiError, ErrorBody};
 use crate::search::{tmdb_client, upstream_error};
 use crate::state::AppState;
 
-/// One of the top-billed cast members on a detail page.
-#[derive(Debug, Clone, Serialize, ToSchema)]
-pub struct MetadataCastMember {
-    /// The person's TMDB id, for the link out to tmdb.org (§9.6).
-    pub tmdb_id: u32,
-    pub name: String,
-    pub character: String,
-    /// Path fragment exactly as TMDB sends it (§9.6): the browser composes
-    /// the URL and picks the size.
-    pub profile_path: Option<String>,
-}
-
 /// The one trailer worth showing, resolved by the §9.6 rule inside `arr-meta`.
 #[derive(Debug, Clone, Serialize, ToSchema)]
 pub struct MetadataTrailer {
@@ -52,8 +40,6 @@ pub struct MovieMetadata {
     pub homepage: Option<String>,
     /// §9.6 links out to `IMDb` for movies.
     pub imdb_id: Option<String>,
-    /// Top 10 billed, ordered by TMDB's own cast order.
-    pub cast: Vec<MetadataCastMember>,
     pub trailer: Option<MetadataTrailer>,
 }
 
@@ -75,8 +61,6 @@ pub struct SeriesMetadata {
     pub homepage: Option<String>,
     /// §9.6 links out to TVDB for series.
     pub tvdb_id: Option<u32>,
-    /// Top 10 billed, ordered by TMDB's own cast order.
-    pub cast: Vec<MetadataCastMember>,
     pub trailer: Option<MetadataTrailer>,
 }
 
@@ -95,7 +79,6 @@ impl From<MovieDetail> for MovieMetadata {
             vote_count: detail.vote_count,
             homepage: detail.homepage,
             imdb_id: detail.imdb_id,
-            cast: detail.cast.into_iter().map(Into::into).collect(),
             trailer: detail.trailer.map(Into::into),
         }
     }
@@ -116,23 +99,11 @@ impl From<SeriesDetail> for SeriesMetadata {
             vote_count: detail.vote_count,
             homepage: detail.homepage,
             tvdb_id: detail.tvdb_id,
-            cast: detail.cast.into_iter().map(Into::into).collect(),
             trailer: detail.trailer.map(Into::into),
         }
     }
 }
 
-impl From<arr_meta::CastMember> for MetadataCastMember {
-    fn from(member: arr_meta::CastMember) -> Self {
-        Self {
-            tmdb_id: member.tmdb_id,
-            name: member.name,
-            character: member.character,
-            profile_path: member.profile_path,
-        }
-    }
-}
-
 impl From<arr_meta::Video> for MetadataTrailer {
     fn from(video: arr_meta::Video) -> Self {
         Self {
@@ -347,11 +318,6 @@ mod tests {
         // §9.6: path fragments exactly as TMDB sends them, never composed URLs.
         assert_eq!(body["poster_path"], "/1pdfLlvXA5qYN3ikFm4QDe7EJ19.jpg");
         assert_eq!(body["backdrop_path"], "/xOMo8BRK7PfcJv9JCnx7s5hj0PX.jpg");
-        assert_eq!(
-            body["cast"][0]["profile_path"],
-            "/tzLq0VAm3myi2lzNpdfhVGjXAdB.jpg"
-        );
-        assert_eq!(body["cast"][0]["character"], "Paul Atreides");
         assert_eq!(body["trailer"]["youtube_key"], "Way9Dexny3w");
         tmdb.verify().await;
     }