Add login mode toggle: allow switching between local and enterprise login

- Added 'Local Users' and 'Enterprise' toggle buttons when LDAP is available
- Users can now choose which login method to use
- Defaults to local user list on page load
- Both modes fully functional and accessible

frontend/app/login/page.tsx

@@ -9,6 +9,7 @@ import { useRouter } from 'next/navigation';
 export default function LoginPage() {
   const [mounted, setMounted] = useState(false);
   const [users, setUsers] = useState<any[]>([]);
+  const [ldapAvailable, setLdapAvailable] = useState(false);
   const [isEnterprise, setIsEnterprise] = useState(false);
   const [isLoading, setIsLoading] = useState(true);
   const [selectedUserForLogin, setSelectedUserForLogin] = useState<any | null>(null);
@@ -25,13 +26,15 @@ export default function LoginPage() {
       setIsLoading(true);
       // Get authentication mode from backend
       const authMode = await inventoryApi.getAuthMode();
-      setIsEnterprise(authMode.mode === 'enterprise');
+      setLdapAvailable(authMode.ldap_enabled);
+      setIsEnterprise(false); // Always start with local mode for user choice
 
       const userList = await inventoryApi.getUsers();
       setUsers(userList);
     } catch (error) {
       console.error("Failed to load auth mode or users", error);
-      setIsEnterprise(false); // Default to local mode on error
+      setLdapAvailable(false);
+      setIsEnterprise(false);
     } finally {
       setIsLoading(false);
     }
@@ -81,6 +84,32 @@ export default function LoginPage() {
           </div>
         ) : (
           <div className="grid gap-3">
+            {ldapAvailable && (
+              <div className="flex gap-2">
+                <button
+                  type="button"
+                  onClick={() => { setIsEnterprise(false); setSelectedUserForLogin(null); }}
+                  className={`flex-1 py-2 px-3 text-sm font-normal rounded border transition-all ${
+                    !isEnterprise
+                      ? 'bg-primary border-primary text-white'
+                      : 'bg-surface-container border-border text-secondary hover:border-primary/50'
+                  }`}
+                >
+                  Local Users
+                </button>
+                <button
+                  type="button"
+                  onClick={() => { setIsEnterprise(true); setSelectedUserForLogin(null); }}
+                  className={`flex-1 py-2 px-3 text-sm font-normal rounded border transition-all ${
+                    isEnterprise
+                      ? 'bg-primary border-primary text-white'
+                      : 'bg-surface-container border-border text-secondary hover:border-primary/50'
+                  }`}
+                >
+                  Enterprise
+                </button>
+              </div>
+            )}
             {!selectedUserForLogin && !isEnterprise ? (
               <>
                 {users.length > 0 ? (