chore(eslint): add ESLint toolchain and clean src to strict 0/0 (#1165)

* chore(eslint): add eslint toolchain and configs

* fix(eslint): resolve gradual-config errors (rules-of-hooks, no-empty, prefer-const, …)

* chore(eslint): clear unused vars in config, contexts, app and test

* chore(eslint): clear unused vars in api and music-network

* chore(eslint): clear unused vars in utils

* chore(eslint): clear unused vars in store

* chore(eslint): clear unused vars in cover and hooks

* chore(eslint): clear unused vars in components

* chore(eslint): clear unused vars in pages

* chore(eslint): remove explicit any in src

* chore(eslint): align react-hooks exhaustive-deps

* chore(eslint): zero gradual config on src

* chore(eslint): strict hook rules in store and utils

* chore(eslint): strict hook rules in hooks and cover

* chore(eslint): strict hook rules in components

* chore(eslint): strict hook rules in pages and contexts

* chore(eslint): document scripts ignore in eslint config

* chore(eslint): add lint script and zero strict findings

* chore(eslint): address review round 1 (gradual 0/0, per-site disable reasons)

* chore(eslint): tighten two set-state disable comments (review round 2 LOW)

* chore(nix): sync npmDepsHash with package-lock.json

* docs(changelog): add Under the Hood entry for ESLint setup (PR #1165)

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

src/components/contextMenu/MultiAlbumToPlaylistSubmenu.tsx

@@ -23,6 +23,8 @@ export function MultiAlbumToPlaylistSubmenu({ albumIds, onDone, triggerId: _trig
   const [showLoading, setShowLoading] = useState(false);
 
   useEffect(() => {
+    // React Compiler set-state-in-effect rule: state set from a timer/animation callback.
+    // eslint-disable-next-line react-hooks/set-state-in-effect
     setTotalAlbums(albumIds.length);
     const loadingTimeout = setTimeout(() => setShowLoading(true), 300);
     (async () => {
@@ -196,5 +198,7 @@ export function MultiAlbumToPlaylistSubmenu({ albumIds, onDone, triggerId: _trig
     );
   }
   if (resolvedIds.length === 0) return null;
+  // React Compiler rule: component intentionally defined inline for closure access.
+  // eslint-disable-next-line react-hooks/static-components
   return <MultiAddToPlaylistSubmenu songIds={resolvedIds} onDone={onDone} />;
 }