fix: landing page improvements and SpaceSwitcher domain support

- SpaceSwitcher auto-derives domain from window.location
- Fix landing page issues (redirect bug, duplicate footers,
  broken links, missing content)

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

src/app/page.tsx

@@ -27,7 +27,6 @@ export default function HomePage() {
   const [roomName, setRoomName] = useState('');
   const [isLoaded, setIsLoaded] = useState(false);
   const [lastRoom, setLastRoom] = useState<string | null>(null);
-  const [isRedirecting, setIsRedirecting] = useState(false);
 
   // Load saved user info from localStorage on mount
   // If opened as installed PWA (standalone mode), auto-redirect to last room
@@ -43,17 +42,10 @@ export default function HomePage() {
           loadedEmoji = user.emoji;
         }
       }
-      // Load last visited room
+      // Load last visited room (show "Rejoin" button, but don't auto-redirect)
       const lastVisited = localStorage.getItem('rmaps_last_room');
       if (lastVisited) {
         setLastRoom(lastVisited);
-
-        // Auto-redirect returning users to their last room
-        if (stored) {
-          setIsRedirecting(true);
-          router.push(`/${lastVisited}`);
-          return;
-        }
       }
     } catch {
       // Ignore parse errors
@@ -110,17 +102,6 @@ export default function HomePage() {
     router.push(`/${lastRoom}`);
   };
 
-  // Show loading screen while redirecting to last room
-  if (isRedirecting) {
-    return (
-      <div className="min-h-screen flex items-center justify-center bg-slate-900">
-        <div className="text-center">
-          <div className="w-8 h-8 border-2 border-emerald-500 border-t-transparent rounded-full animate-spin mx-auto mb-4" />
-          <div className="text-white/60">Rejoining your map...</div>
-        </div>
-      </div>
-    );
-  }
 
   return (
     <div className="min-h-screen bg-gradient-to-br from-slate-900 via-slate-800 to-slate-900">