fix: resolve pre-existing dashboard console errors

- AdminProfile.jsx: remove non-existent updated_at column from tickets query,
  use created_at for both select and order (fixes 400 Bad Request)
- AdminUsers.jsx: wrap user_requests fetch in try/catch to silently handle
  404 when table doesn't exist; profile-based fallback still shows pending users

Author: ritesh-1918

Frontend/src/admin/pages/AdminProfile.jsx

@@ -78,9 +78,9 @@ const AdminProfile = () => {
             try {
                 const { data, error } = await supabase
                     .from('tickets')
-                    .select('id, subject, status, created_at, updated_at')
+                    .select('id, subject, status, created_at')
                     .eq('company', adminProfile.company)
-                    .order('updated_at', { ascending: false })
+                    .order('created_at', { ascending: false })
                     .limit(5);
 
                 if (error) throw error;
@@ -89,7 +89,7 @@ const AdminProfile = () => {
                     id: t.id,
                     action: `Ticket ${t.status?.toUpperCase() || 'UPDATED'}`,
                     target: `#TKT-${t.id.slice(0, 4)}`,
-                    timestamp: new Date(t.updated_at || t.created_at).toLocaleString(),
+                    timestamp: new Date(t.created_at).toLocaleString(),
                     status: "Success"
                 }));
                 setActivityLog(formatted);

Frontend/src/admin/pages/AdminUsers.jsx

@@ -114,17 +114,21 @@ const AdminUsers = () => {
             // 2. Fetch PENDING entities
             let allPending = [];
             if (activeCompanyId) {
-                const { data: reqData, error: reqError } = await supabase
-                    .from('user_requests')
-                    .select(`
-                        id, user_id, company_id, status, created_at,
-                        user:profiles!user_id (id, full_name, email, company, profile_picture, status)
-                    `)
-                    .eq('company_id', activeCompanyId)
-                    .eq('status', 'pending')
-                    .order('created_at', { ascending: false });
-
-                if (!reqError && reqData) allPending = [...reqData];
+                try {
+                    const { data: reqData, error: reqError } = await supabase
+                        .from('user_requests')
+                        .select(`
+                            id, user_id, company_id, status, created_at,
+                            user:profiles!user_id (id, full_name, email, company, profile_picture, status)
+                        `)
+                        .eq('company_id', activeCompanyId)
+                        .eq('status', 'pending')
+                        .order('created_at', { ascending: false });
+
+                    if (!reqError && reqData) allPending = [...reqData];
+                } catch (_) {
+                    // user_requests table may not exist — profile-based fallback below handles pending users
+                }
             }
 
             // Path B: Direct profile lookup (Ensure Anjali is visible even if request row failed)