fix: logged-in users can now comment without entering personal info

- Fix user data extraction in rooms page (was looking for j.user instead of direct fields)
- Add email to /api/auth/me response for logged-in user display
- User object now properly populated with id, username, role, first_name, last_name, email, comments_disabled
- Comments section now correctly shows 'Posting as {name}' for logged-in users
- Reservations and messages already use user info when logged in, only require guest info for guests

src/app/rooms/page.tsx

@@ -87,7 +87,21 @@ export default function RoomsPage() {
 
     fetch('/api/auth/me', { credentials: 'same-origin' })
       .then((r) => r.json())
-      .then((j) => setUser(j.user || null))
+      .then((j) => {
+        if (j.authenticated) {
+          setUser({
+            id: j.id,
+            username: j.username,
+            role: j.role,
+            first_name: j.first_name,
+            last_name: j.last_name,
+            email: j.email,
+            comments_disabled: j.comments_disabled,
+          });
+        } else {
+          setUser(null);
+        }
+      })
       .catch(() => {});
   }, []);