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.

web/src/main.ts

@@ -12,13 +12,11 @@ import {
   formatRating,
   formatVoteCount,
   imdbLink,
-  type MetadataCastMember,
   movieMetadata,
   resolveTrailer,
   rottenTomatoesSearch,
   tmdbImage,
   tmdbMovieLink,
-  tmdbPersonLink,
   tmdbSeriesLink,
   tvdbLink,
   updateMovie,
@@ -1288,46 +1286,6 @@ function externalLink(label: string, href: string): HTMLAnchorElement {
   return link;
 }
 
-/** One top-billed cast member, linking out to their TMDB page (§9.6). */
-function castItem(member: MetadataCastMember): HTMLLIElement {
-  const item = document.createElement("li");
-  item.className = "cast-item";
-  const link = document.createElement("a");
-  link.className = "cast-link";
-  link.href = tmdbPersonLink(member.tmdb_id);
-  link.target = "_blank";
-  link.rel = "noreferrer";
-  const photo = document.createElement("span");
-  photo.className = "cast-photo";
-  const image = tmdbImage(member.profile_path, "w185");
-  if (image !== null) {
-    const img = document.createElement("img");
-    img.src = image;
-    img.alt = "";
-    img.loading = "lazy";
-    // hotlinked art can 404 (§9.6); fall back to the same empty frame a
-    // person with no photo gets, rather than a broken-image glyph.
-    img.addEventListener("error", () => {
-      img.remove();
-      photo.classList.add("cast-photo-none");
-    });
-    photo.append(img);
-  } else {
-    photo.classList.add("cast-photo-none");
-  }
-  const name = document.createElement("span");
-  name.className = "cast-name";
-  name.textContent = member.name;
-  const character = document.createElement("span");
-  character.className = "cast-character readout dim";
-  character.textContent = member.character;
-  link.setAttribute("aria-label", `${member.name} as ${member.character} — on TMDB`);
-  link.append(photo, name, character);
-  link.title = `${member.name} — ${member.character}`;
-  item.append(link);
-  return item;
-}
-
 function movieMain(board: HTMLElement, views: HideableView[]): MovieView {
   const view = must<HTMLElement>("#movie");
   const deckEl = must<HTMLElement>("#deck");
@@ -1349,8 +1307,6 @@ function movieMain(board: HTMLElement, views: HideableView[]): MovieView {
   const sweep = must<HTMLButtonElement>("#movie-sweep");
   const remove = must<HTMLButtonElement>("#movie-remove");
   const removeWrap = must<HTMLElement>("#remove-panel");
-  const castSection = must<HTMLElement>("#movie-cast");
-  const castRows = must<HTMLUListElement>("#rows-cast");
   const filesSection = must<HTMLElement>("#movie-files");
   const diskCount = must<HTMLElement>("#count-disk");
   const diskRows = must<HTMLUListElement>("#rows-disk");
@@ -1589,8 +1545,6 @@ function movieMain(board: HTMLElement, views: HideableView[]): MovieView {
     taglineEl.hidden = true;
     overviewEl.hidden = true;
     actionsEl.replaceChildren();
-    castSection.hidden = true;
-    castRows.replaceChildren();
   }
 
   async function loadMetadata(id: number, ticket: number) {
@@ -1660,12 +1614,6 @@ function movieMain(board: HTMLElement, views: HideableView[]): MovieView {
         externalLink("rotten tomatoes", rottenTomatoesSearch(current.title, current.year)),
       );
     }
-    if (detail.cast.length > 0 && current !== null) {
-      castSection.hidden = false;
-      for (const member of detail.cast) {
-        castRows.append(castItem(member));
-      }
-    }
   }
 
   /* ---- on disk: ffprobe truth and honest waivers (§5.6, §5.7) ---- */
@@ -3033,8 +2981,6 @@ function seriesMain(board: HTMLElement, tvDeck: TvReleasesView, views: HideableV
   const taglineEl = must<HTMLElement>("#series-tagline");
   const overviewEl = must<HTMLElement>("#series-overview");
   const actionsEl = must<HTMLElement>("#series-actions");
-  const castSection = must<HTMLElement>("#series-cast");
-  const castRows = must<HTMLUListElement>("#rows-series-cast");
   const statusEl = must<HTMLElement>("#series-status");
   const seasonsList = must<HTMLUListElement>("#rows-seasons");
 
@@ -3104,8 +3050,6 @@ function seriesMain(board: HTMLElement, tvDeck: TvReleasesView, views: HideableV
     taglineEl.hidden = true;
     overviewEl.hidden = true;
     actionsEl.replaceChildren();
-    castSection.hidden = true;
-    castRows.replaceChildren();
   }
 
   async function loadMetadata(id: number, ticket: number) {
@@ -3184,12 +3128,6 @@ function seriesMain(board: HTMLElement, tvDeck: TvReleasesView, views: HideableV
         externalLink("rotten tomatoes", rottenTomatoesSearch(series.title, series.year)),
       );
     }
-    if (detail.cast.length > 0) {
-      castSection.hidden = false;
-      for (const member of detail.cast) {
-        castRows.append(castItem(member));
-      }
-    }
   }
 
   function seasonCountsChip(season: ApiSeason): HTMLSpanElement {