Add federated room detail page and improve address parsing in invites

server/config/federation.js

@@ -149,12 +149,15 @@ export async function discoverInstance(domain) {
  * @returns {{ username: string, domain: string | null }}
  */
 export function parseAddress(address) {
-    if (!address || !address.includes('@')) {
-        return { username: address, domain: null };
+    if (!address) return { username: address, domain: null };
+    // Accept both @user@domain (Mastodon-style) and user@domain
+    const normalized = address.startsWith('@') ? address.slice(1) : address;
+    if (!normalized.includes('@')) {
+        return { username: normalized, domain: null };
     }
-    const atIndex = address.lastIndexOf('@');
+    const atIndex = normalized.lastIndexOf('@');
     return {
-        username: address.substring(0, atIndex),
-        domain: address.substring(atIndex + 1),
+        username: normalized.substring(0, atIndex),
+        domain: normalized.substring(atIndex + 1),
     };
 }

server/routes/federation.js

@@ -77,7 +77,7 @@ router.post('/invite', authenticateToken, async (req, res) => {
         const inviteId = uuidv4();
         const payload = {
             invite_id: inviteId,
-            from_user: `${req.user.name}@${getFederationDomain()}`,
+            from_user: `@${req.user.name}@${getFederationDomain()}`,
             to_user: to,
             room_name: room.name,
             room_uid: room.uid,
@@ -195,7 +195,7 @@ router.post('/receive', async (req, res) => {
 
         // Send notification email (truly fire-and-forget – never blocks the response)
         if (targetUser.email) {
-          const appUrl = process.env.APP_URL || '';
+          const appUrl = process.env.APP_URL || `${req.protocol}://${req.get('host')}`;
           const inboxUrl = `${appUrl}/federation/inbox`;
           const appName = process.env.APP_NAME || 'Redlight';
           sendFederationInviteEmail(