fix: Increase polling intervals for authentication status checks to reduce server load

index.html

@@ -242,10 +242,10 @@
         const res  = await fetch('/auth/status');
         const data = await res.json();
         if (data.authenticated) { clearInterval(check); setAuthBanner(true); }
-      }, 2000);
+      }, 20000);
       // Stop checking after 2 min
       setTimeout(() => clearInterval(check), 120000);
-    }, 3000);
+    }, 30000);
   }
 
   /* ── Helpers ── */