feat: Complete analytics implementation with all 7 pages, ROI calculation, conversion rate formatting, and chart improvements

includes/Api/Permissions.php

@@ -29,4 +29,12 @@ class Permissions {
         $nonce = $_SERVER['HTTP_X_WP_NONCE'] ?? '';
         return (bool) wp_verify_nonce($nonce, 'wp_rest');
     }
+
+    /**
+     * Check if user has admin/manage_woocommerce permission
+     * Used for analytics and admin-only endpoints
+     */
+    public static function check_admin_permission(): bool {
+        return current_user_can('manage_woocommerce') || current_user_can('manage_options');
+    }
 }

includes/Api/Routes.php

@@ -0,0 +1,23 @@
+<?php
+namespace WooNooW\Api;
+
+use WP_REST_Request;
+use WP_REST_Response;
+use WooNooW\Api\CheckoutController;
+use WooNooW\Api\OrdersController;
+use WooNooW\Api\AnalyticsController;
+
+class Routes {
+    public static function init() {
+        // Initialize controllers (register action hooks)
+        OrdersController::init();
+        
+        add_action('rest_api_init', function () {
+            $namespace = 'woonoow/v1';
+            // Defer to controllers to register their endpoints
+            CheckoutController::register();
+            OrdersController::register();
+            AnalyticsController::register_routes();
+        });
+    }
+}