chore(settings): reset uiScale to 1.0 on startup while scaling is disabled

Users who had previously set a custom scale are silently reset to 100%
on next launch so they are not stuck at a broken zoom level. The stored
value is cleared in fontStore so the slider starts at 100% once the
feature is re-enabled.

Also credits nisrael for the ICY / AzuraCast PR #146.

TODO: remove the reset effect and re-enable the slider in Settings.tsx
when UI scaling is properly reworked.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/App.tsx

@@ -557,6 +557,7 @@ export default function App() {
   const effectiveTheme = useThemeScheduler();
   const font = useFontStore(s => s.font);
   const uiScale = useFontStore(s => s.uiScale);
+  const setUiScale = useFontStore(s => s.setUiScale);
   const [exportPickerOpen, setExportPickerOpen] = useState(false);
 
   useEffect(() => {
@@ -567,6 +568,14 @@ export default function App() {
     document.documentElement.setAttribute('data-font', font);
   }, [font]);
 
+  // TODO(ui-scale): UI scaling is disabled pending a cross-platform rework.
+  // Reset any stored non-100% value so users aren't stuck at a broken scale.
+  // When re-enabling: remove this effect AND re-enable the slider in Settings.tsx.
+  useEffect(() => {
+    if (uiScale !== 1.0) setUiScale(1.0);
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
   useEffect(() => {
     document.documentElement.style.zoom = String(uiScale);
   }, [uiScale]);

src/pages/Settings.tsx

@@ -116,6 +116,7 @@ const CONTRIBUTORS = [
     contributions: [
       'Nightfox.nvim theme group in Open Source Classics (PR #114)',
       'Switch reqwest to rustls-tls for cross-platform TLS (PR #112)',
+      'ICY stream metadata & AzuraCast Now Playing support (PR #146)',
     ],
   },
 ] as const;