feat(library): a maximised window leaves the phone frame

docker/frontend/src/Library.tsx

@@ -373,6 +373,18 @@ function Catalogue({ admin, user }: { admin: boolean; user: User | null }) {
   const detectedMobile = useIsMobile(860);
   const isMobile = forceView === 'mobile' || (forceView === 'auto' && detectedMobile);
 
+  // The phone frame belongs to a narrow window. A desktop browser that drags its
+  // title bar to the top of the screen, or presses maximise, is a window with the
+  // room for the desktop layout again — so the frame is let go, and only there:
+  // a phone never widens past the breakpoint, and a window still narrow keeps it.
+  useEffect(() => {
+    const onResize = () => {
+      if (forceView === 'mobile' && window.innerWidth > 860) setForceView('auto');
+    };
+    window.addEventListener('resize', onResize);
+    return () => window.removeEventListener('resize', onResize);
+  }, [forceView]);
+
   const [folders, setFolders] = useState<LibraryFolder[]>(() => cachedFolders());
   const [ready, setReady] = useState<Set<string>>(new Set());
   // The Immich servers this account has saved, and the two dialogs that write