feat: Add LDAP/Active Directory integration with group-based access control

- Add PHP LDAP extension to Docker container
- Implement LdapSync class for authentication and user synchronization
- Add automatic user sync via cron (every 30 minutes)
- Create role-based access control system (admin, manager, viewer)
- Add LDAP configuration UI in settings
- Support for both Active Directory and OpenLDAP
- Group-to-role mapping with flexible configuration
- Add 50+ translations (EN + RU) for LDAP features
- Include comprehensive setup documentation
- Enhance Auth::login() with LDAP fallback
- Add LDAP settings page with connection testing

public/index.php

@@ -1798,6 +1798,36 @@ Router::post('/settings/delete-user/{id}', function ($params) {
     $controller->deleteUser($params['id']);
 });
 
+// LDAP settings page
+Router::get('/settings/ldap', function () {
+    requireAdmin();
+    
+    require_once __DIR__ . '/../controllers/SettingsController.php';
+    require_once __DIR__ . '/../inc/LdapSync.php';
+    $controller = new SettingsController();
+    $controller->ldapSettings();
+});
+
+// Save LDAP settings
+Router::post('/settings/ldap/save', function () {
+    requireAdmin();
+    
+    require_once __DIR__ . '/../controllers/SettingsController.php';
+    require_once __DIR__ . '/../inc/LdapSync.php';
+    $controller = new SettingsController();
+    $controller->saveLdapSettings();
+});
+
+// Test LDAP connection
+Router::post('/settings/ldap/test', function () {
+    requireAdmin();
+    
+    require_once __DIR__ . '/../controllers/SettingsController.php';
+    require_once __DIR__ . '/../inc/LdapSync.php';
+    $controller = new SettingsController();
+    $controller->testLdapConnection();
+});
+
 /**
  * LANGUAGE ROUTES
  */