Refactor dashboard notification handling and improve admin broadcast functionality. Ensure only admins can access global notifications, implement draft management for broadcast messages, and add event listeners for real-time updates across dashboard components.

dashboard/app/dashboard/layout.tsx

@@ -69,9 +69,15 @@ export default function DashboardLayout({
     if (status === "unauthenticated") {
       signIn("discord");
     }
-    
-    // Fetch global notification
+
+    if (status !== "authenticated") return;
+
     const fetchNotification = async () => {
+      // Only admins can read admin config — skip for everyone else
+      if (!isAdmin(session?.user?.id)) {
+        setGlobalNotification(null);
+        return;
+      }
       try {
         const config = await api.getAdminConfig();
         setGlobalNotification(config.global_notification);
@@ -79,8 +85,15 @@ export default function DashboardLayout({
         console.error("Failed to fetch notifications:", err);
       }
     };
+
     fetchNotification();
-  }, [status]);
+
+    const onBroadcastUpdated = () => {
+      fetchNotification();
+    };
+    window.addEventListener("axiom:broadcast-updated", onBroadcastUpdated);
+    return () => window.removeEventListener("axiom:broadcast-updated", onBroadcastUpdated);
+  }, [status, session?.user?.id]);
 
   if (status === "loading" || status === "unauthenticated") {
     return (
@@ -367,7 +380,17 @@ export default function DashboardLayout({
                     <div className="flex items-center justify-between mb-4 border-b border-white/5 pb-2">
                       <p className="text-[10px] font-black text-slate-500 uppercase tracking-[0.2em]">Broadcast Metrics</p>
                       <button 
-                        onClick={() => setGlobalNotification(null)}
+                        type="button"
+                        onClick={async () => {
+                          setGlobalNotification(null);
+                          if (isAdmin(session?.user?.id)) {
+                            try {
+                              await api.updateAdminConfig({ global_notification: "" });
+                            } catch (err) {
+                              console.error("Failed to clear broadcast:", err);
+                            }
+                          }
+                        }}
                         className="text-[10px] font-bold text-primary/60 hover:text-primary transition-colors uppercase"
                       >
                         Clear