diff --git a/plugins/register/bootstrap.php b/plugins/register/bootstrap.php
index d292c6b..2bff358 100644
--- a/plugins/register/bootstrap.php
+++ b/plugins/register/bootstrap.php
@@ -12,11 +12,16 @@ if (!defined('PLUGIN_REGISTER_PATH')) {
 }
 
 require_once PLUGIN_REGISTER_PATH . 'helpers.php';
-require_once PLUGIN_REGISTER_PATH . 'controllers/register.php';
 
-// Register route with dispatcher class
+// Register route with simple callable dispatcher
 register_plugin_route_prefix('register', [
-    'dispatcher' => \Plugins\Register\Controllers\RegisterController::class,
+    'dispatcher' => function($action, array $context = []) {
+        require_once PLUGIN_REGISTER_PATH . 'controllers/register.php';
+        if (function_exists('register_plugin_handle_register')) {
+            return register_plugin_handle_register($action, $context);
+        }
+        return false;
+    },
     'access' => 'public',
     'defaults' => ['action' => 'register'],
     'plugin' => 'register',
diff --git a/plugins/register/controllers/register.php b/plugins/register/controllers/register.php
index cc207d4..2e445fb 100644
--- a/plugins/register/controllers/register.php
+++ b/plugins/register/controllers/register.php
@@ -1,19 +1,11 @@
 <?php
 
 /**
- * User Registration API Controller
+ * Register Plugin Controller
  *
- * Provides RESTful endpoints for user registration.
- * Follows the API pattern used by other plugins.
+ * Procedural handler used by the callable dispatcher.
  */
 
-namespace Plugins\Register\Controllers;
-
-use App\App;
-use App\Helpers\Theme;
-use Exception;
-use PDO;
-
 require_once APP_PATH . 'classes/feedback.php';
 require_once APP_PATH . 'classes/user.php';
 require_once APP_PATH . 'classes/validator.php';
@@ -22,167 +14,146 @@ require_once APP_PATH . 'helpers/theme.php';
 require_once APP_PATH . 'includes/rate_limit_middleware.php';
 require_once PLUGIN_REGISTER_PATH . 'models/register.php';
 
-class RegisterController
-{
-    private $db;
-    private array $config;
-    private string $appRoot;
-    private $logger;
+function register_plugin_handle_register(string $action, array $context = []): bool {
+    $validSession = (bool)($context['valid_session'] ?? false);
+    $app_root = $context['app_root'] ?? (\App\App::get('app_root') ?? '/');
+    $config = $context['config'] ?? \App\App::config();
+    $db = $context['db'] ?? \App\App::db();
+    $logger = $context['logger'] ?? \App\App::get('logger');
 
-    public function __construct()
-    {
-        $this->db = App::db();
-        $this->config = App::config();
-        $this->appRoot = App::get('app_root') ?? '/';
-        $this->logger = App::get('logObject');
-    }
-
-    public function handle(string $action, array $context = []): bool
-    {
-        $validSession = (bool)($context['valid_session'] ?? false);
-        $app_root = $context['app_root'] ?? $this->appRoot;
-
-        if (!$this->db) {
-            \Feedback::flash('ERROR', 'DEFAULT', 'Registration service unavailable. Please try again later.');
-            $this->renderForm($validSession, $app_root, ['registrationEnabled' => false]);
-            return true;
-        }
-
-        if (!$this->isRegistrationEnabled()) {
-            \Feedback::flash('NOTICE', 'DEFAULT', 'Registration is currently disabled.');
-            $this->renderForm($validSession, $app_root, ['registrationEnabled' => false]);
-            return true;
-        }
-
-        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
-            $this->handleSubmission($validSession, $app_root);
-            return true;
-        }
-
-        $this->renderForm($validSession, $app_root);
+    if (!$db) {
+        \Feedback::flash('ERROR', 'DEFAULT', 'Registration service unavailable. Please try again later.');
+        register_plugin_render_form($validSession, $app_root, ['registrationEnabled' => false]);
         return true;
     }
 
-    private function isRegistrationEnabled(): bool
-    {
-        return (bool)($this->config['registration_enabled'] ?? false);
+    if (!(bool)($config['registration_enabled'] ?? false)) {
+        \Feedback::flash('NOTICE', 'DEFAULT', 'Registration is currently disabled.');
+        register_plugin_render_form($validSession, $app_root, ['registrationEnabled' => false]);
+        return true;
     }
 
-    private function handleSubmission(bool $validSession, string $app_root): void
-    {
-        checkRateLimit($this->db, 'register');
-
-        $security = \SecurityHelper::getInstance();
-        $formData = $security->sanitizeArray(
-            $_POST,
-            ['username', 'password', 'confirm_password', 'csrf_token', 'terms']
-        );
-
-        if (!$security->verifyCsrfToken($formData['csrf_token'] ?? '')) {
-            \Feedback::flash('ERROR', 'DEFAULT', 'Invalid security token. Please try again.');
-            $this->renderForm($validSession, $app_root, [
-                'values' => ['username' => $formData['username'] ?? ''],
-            ]);
-            return;
-        }
-
-        $validator = new \Validator($formData);
-        $rules = [
-            'username' => [
-                'required' => true,
-                'min' => 3,
-                'max' => 20,
-            ],
-            'password' => [
-                'required' => true,
-                'min' => 8,
-                'max' => 255,
-            ],
-            'confirm_password' => [
-                'required' => true,
-                'matches' => 'password',
-            ],
-            'terms' => [
-                'required' => true,
-                'accepted' => true,
-            ],
-        ];
-
-        if (!$validator->validate($rules)) {
-            \Feedback::flash('ERROR', 'DEFAULT', $validator->getFirstError());
-            $this->renderForm($validSession, $app_root, [
-                'values' => ['username' => $formData['username'] ?? ''],
-            ]);
-            return;
-        }
-
-        $username = trim($formData['username']);
-        $password = $formData['password'];
-
-        try {
-            $register = new \Register($this->db);
-            $result = $register->register($username, $password);
-
-            if ($result === true) {
-                $this->logSuccessfulRegistration($username);
-                \Feedback::flash('NOTICE', 'DEFAULT', 'Registration successful. You can log in now.');
-                header('Location: ' . $app_root . '?page=login');
-                exit;
-            }
-
-            \Feedback::flash('ERROR', 'DEFAULT', 'Registration failed: ' . $result);
-            $this->renderForm($validSession, $app_root, [
-                'values' => ['username' => $username],
-            ]);
-        } catch (Exception $e) {
-            \Feedback::flash('ERROR', 'DEFAULT', 'Registration failed: ' . $e->getMessage());
-            $this->renderForm($validSession, $app_root, [
-                'values' => ['username' => $username],
-            ]);
-        }
+    if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+        register_plugin_handle_submission($validSession, $app_root, $db, $logger);
+        return true;
     }
 
-    private function logSuccessfulRegistration(string $username): void
-    {
-        if (!$this->logger) {
-            return;
-        }
+    register_plugin_render_form($validSession, $app_root);
+    return true;
+}
 
-        try {
-            $userModel = new \User($this->db);
-            $userRecord = $userModel->getUserId($username);
-            $userId = $userRecord[0]['id'] ?? null;
-            $userIP = $_SERVER['REMOTE_ADDR'] ?? '';
+function register_plugin_handle_submission(bool $validSession, string $app_root, $db, $logger = null): void {
+    checkRateLimit($db, 'register');
 
-            $this->logger->log(
-                'info',
-                sprintf('Registration: New user "%s" registered successfully. IP: %s', $username, $userIP),
-                ['user_id' => $userId, 'scope' => 'user']
-            );
-        } catch (Exception $e) {
-            app_log('warning', 'RegisterController logging failed: ' . $e->getMessage(), ['scope' => 'plugin']);
-        }
+    $security = \SecurityHelper::getInstance();
+    $formData = $security->sanitizeArray(
+        $_POST,
+        ['username', 'password', 'confirm_password', 'csrf_token', 'terms']
+    );
+
+    if (!$security->verifyCsrfToken($formData['csrf_token'] ?? '')) {
+        \Feedback::flash('ERROR', 'DEFAULT', 'Invalid security token. Please try again.');
+        register_plugin_render_form($validSession, $app_root, [
+            'values' => ['username' => $formData['username'] ?? ''],
+        ]);
+        return;
     }
 
-    private function renderForm(bool $validSession, string $app_root, array $data = []): void
-    {
-        $formValues = $data['values'] ?? ['username' => ''];
-        $registrationEnabled = $data['registrationEnabled'] ?? true;
+    $validator = new \Validator($formData);
+    $rules = [
+        'username' => [
+            'required' => true,
+            'min' => 3,
+            'max' => 20,
+        ],
+        'password' => [
+            'required' => true,
+            'min' => 8,
+            'max' => 255,
+        ],
+        'confirm_password' => [
+            'required' => true,
+            'matches' => 'password',
+        ],
+        'terms' => [
+            'required' => true,
+            'accepted' => true,
+        ],
+    ];
 
-        Theme::include('page-header');
-        Theme::include('page-menu');
-        if ($validSession) {
-            Theme::include('page-sidebar');
+    if (!$validator->validate($rules)) {
+        \Feedback::flash('ERROR', 'DEFAULT', $validator->getFirstError());
+        register_plugin_render_form($validSession, $app_root, [
+            'values' => ['username' => $formData['username'] ?? ''],
+        ]);
+        return;
+    }
+
+    $username = trim($formData['username']);
+    $password = $formData['password'];
+
+    $pdo = $db instanceof \PDO ? $db : $db->getConnection();
+
+    try {
+        $register = new \Register($pdo);
+        $result = $register->register($username, $password);
+
+        if ($result === true) {
+            register_plugin_log_success($username, $db, $logger);
+            \Feedback::flash('NOTICE', 'DEFAULT', 'Registration successful. You can log in now.');
+            header('Location: ' . $app_root . '?page=login');
+            exit;
         }
 
-        include APP_PATH . 'helpers/feedback.php';
-
-        $app_root_value = $app_root; // align variable name for template include
-        $app_root = $app_root_value;
-        $values = $formValues;
-
-        include PLUGIN_REGISTER_PATH . 'views/form-register.php';
-
-        Theme::include('page-footer');
+        \Feedback::flash('ERROR', 'DEFAULT', 'Registration failed: ' . $result);
+        register_plugin_render_form($validSession, $app_root, [
+            'values' => ['username' => $username],
+        ]);
+    } catch (Exception $e) {
+        \Feedback::flash('ERROR', 'DEFAULT', 'Registration failed: ' . $e->getMessage());
+        register_plugin_render_form($validSession, $app_root, [
+            'values' => ['username' => $username],
+        ]);
     }
 }
+
+function register_plugin_log_success(string $username, $db, $logger = null): void {
+    if (!$logger) {
+        return;
+    }
+
+    try {
+        $userModel = new \User($db);
+        $userRecord = $userModel->getUserId($username);
+        $userId = $userRecord[0]['id'] ?? null;
+        $userIP = $_SERVER['REMOTE_ADDR'] ?? '';
+
+        $logger->log(
+            'info',
+            sprintf('Registration: New user "%s" registered successfully. IP: %s', $username, $userIP),
+            ['user_id' => $userId, 'scope' => 'user']
+        );
+    } catch (Exception $e) {
+        app_log('warning', 'Register plugin logging failed: ' . $e->getMessage(), ['scope' => 'plugin']);
+    }
+}
+
+function register_plugin_render_form(bool $validSession, string $app_root, array $data = []): void {
+    $formValues = $data['values'] ?? ['username' => ''];
+    $registrationEnabled = $data['registrationEnabled'] ?? true;
+
+    \App\Helpers\Theme::include('page-header');
+    \App\Helpers\Theme::include('page-menu');
+    if ($validSession) {
+        \App\Helpers\Theme::include('page-sidebar');
+    }
+
+    include APP_PATH . 'helpers/feedback.php';
+
+    $values = $formValues;
+    $app_root = $app_root;
+
+    include PLUGIN_REGISTER_PATH . 'views/form-register.php';
+
+    \App\Helpers\Theme::include('page-footer');
+}