release: 0.66.0 — E5 Plex epic (scoped search, HU localization, toolbar/header)

Ships the E5 sprint stack (S1–S7): field-scoped Plex search + typeahead, cast &
crew pages, the HU-overlay Hungarian metadata + language-aware serving, the
IMDb/audience rating split, the toolbar relocation, and the narrow/mobile header
fix — plus the underlying Plex-module refactors (feedquery/plex.cards/plex.query
extraction, db.query→2.0 select).

- VERSION 0.65.2 → 0.66.0
- releaseNotes.ts: 0.66.0 user-facing entry
- prettier-format the E5-touched frontend files (release hygiene)

Merged main (0.65.2 download-gc hotfix) in first; no code conflicts (E5 is
Plex-only, the hotfix was notifications/downloads).

frontend/src/lib/api/plex.ts

@@ -307,7 +307,12 @@ export const plexApi = {
   },
   // Facets ADAPT to the active filters + watch-state (faceted search) — pass them so each group
   // narrows the others and the bounds match the visible result set. `lang` picks the genre vocabulary.
-  plexFacets: (scope: string, f?: PlexFilters, show?: string, lang?: string): Promise<PlexFacets> => {
+  plexFacets: (
+    scope: string,
+    f?: PlexFilters,
+    show?: string,
+    lang?: string,
+  ): Promise<PlexFacets> => {
     const u = new URLSearchParams({ scope });
     if (show && show !== "all") u.set("show", show);
     if (lang === "hu") u.set("lang", "hu");