feat(notifications): add delete functionality for individual and all notifications

feat(guest-join): support access code in guest join URL

server/routes/federation.js

@@ -83,8 +83,11 @@ router.post('/invite', authenticateToken, async (req, res) => {
         }
 
         // Build guest join URL for the remote user
+        // If the room has an access code, embed it so the recipient can join without manual entry
         const baseUrl = process.env.APP_URL || `${req.protocol}://${req.get('host')}`;
-        const joinUrl = `${baseUrl}/join/${room.uid}`;
+        const joinUrl = room.access_code
+            ? `${baseUrl}/join/${room.uid}?ac=${encodeURIComponent(room.access_code)}`
+            : `${baseUrl}/join/${room.uid}`;
 
         // Build invitation payload
         const inviteId = uuidv4();