chore(release): 0.56.0 — R7 frontend API layer

VERSION

@@ -1 +1 @@
-0.55.0
+0.56.0

frontend/src/lib/releaseNotes.ts

@@ -14,6 +14,17 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.56.0",
+    date: "2026-07-28",
+    summary:
+      "Internal frontend hardening — the whole client API layer is now type-checked end to end and the largest module was broken up for maintainability. No changes to normal use.",
+    chores: [
+      "Type safety: the fetch wrapper and every one of the ~150 API calls now carry real types, closed-value fields (watch status, playlist kind/source, download job kind) are strict value sets, and every loosely-typed `any` was removed and is now blocked going forward — a whole class of mistakes is caught at build time instead of in the browser.",
+      "Cache correctness: all ~200 React Query cache keys now come from one typed source of truth, so a mistyped key can no longer silently fail to refresh a list after an action.",
+      "Code structure: the ~1800-line API module was split — the shared request machinery and the downloads, Plex, and messaging areas each moved to their own file behind the exact same interface, with no behaviour change. Plus a validation message and browser-tab titles now read from a single source so they can't drift.",
+    ],
+  },
   {
     version: "0.55.0",
     date: "2026-07-26",