feat: add export csv button

src/app/admin/user-management/page.tsx

@@ -157,6 +157,50 @@ export default function AdminUserManagementPage() {
     setPage(1)
   }
 
+  // NEW: CSV export utilities (exports all filtered results, not only current page)
+  const toCsvValue = (v: unknown) => {
+    if (v === null || v === undefined) return '""'
+    const s = String(v).replace(/"/g, '""')
+    return `"${s}"`
+  }
+
+  const exportCsv = () => {
+    const headers = [
+      'ID','Email','Type','Role','Status','Admin Verified',
+      'First Name','Last Name','Company Name','Created At','Last Login At'
+    ]
+    const rows = filtered.map(u => {
+      // Map backend to friendly values
+      const userStatus: 'active'|'pending'|'disabled' =
+        u.is_admin_verified === 1 ? 'active' :
+        u.status === 'pending' ? 'pending' :
+        u.status === 'suspended' ? 'disabled' : 'pending'
+      return [
+        u.id,
+        u.email,
+        u.user_type,
+        u.role,
+        userStatus,
+        u.is_admin_verified === 1 ? 'yes' : 'no',
+        u.first_name || '',
+        u.last_name || '',
+        u.company_name || '',
+        new Date(u.created_at).toISOString(),
+        u.last_login_at ? new Date(u.last_login_at).toISOString() : ''
+      ].map(toCsvValue).join(',')
+    })
+    const csv = [headers.join(','), ...rows].join('\r\n')
+    const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' })
+    const url = URL.createObjectURL(blob)
+    const a = document.createElement('a')
+    a.href = url
+    a.download = `users_${new Date().toISOString().slice(0,10)}.csv`
+    document.body.appendChild(a)
+    a.click()
+    a.remove()
+    URL.revokeObjectURL(url)
+  }
+
   const badge = (text: string, color: 'blue'|'amber'|'green'|'gray'|'rose'|'indigo'|'purple') => {
     const base = 'inline-flex items-center gap-1 rounded-full px-2 py-0.5 text-[10px] font-medium tracking-wide'
     const map: Record<string,string> = {
@@ -297,7 +341,16 @@ export default function AdminUserManagementPage() {
                 </select>
               </div>
             </div>
-            <div className="flex justify-end">
+            <div className="flex justify-end gap-2">
+              {/* NEW: Export CSV (exports all filtered results) */}
+              <button
+                type="button"
+                onClick={exportCsv}
+                className="inline-flex items-center gap-2 rounded-md border border-gray-300 bg-white hover:bg-gray-50 text-gray-700 text-sm font-semibold px-5 py-2.5 shadow-sm transition"
+                title="Export all filtered users to CSV"
+              >
+                Export all users as CSV
+              </button>
               <button
                 type="submit"
                 className="inline-flex items-center gap-2 rounded-md bg-blue-600 hover:bg-blue-500 text-white text-sm font-semibold px-5 py-2.5 shadow transition"