refactor(admin): consolidate duplicate configuration

Remove duplicate comment, captcha, filing, and website-security configuration paths.

Move front submission verification to the captcha scene matrix and retire obsolete admin routes and components.

src/Core/FrontSubmit.php

@@ -295,7 +295,7 @@ class FrontSubmit {
 
     public function ajax_submit_post(): void {
         $this->verify_nonce();
-        $this->maybe_verify_captcha();
+        $this->verify_captcha();
 
         $data = wp_unslash($_POST);
         $result = $this->persist(is_array($data) ? $data : [], 'posts_save');
@@ -385,21 +385,15 @@ class FrontSubmit {
         }
     }
 
-    private function maybe_verify_captcha(): void {
-        $settings = $this->settings();
-        if (empty($settings['captcha'])) {
-            return;
-        }
+    private function verify_captcha(): void {
         if (!function_exists('aksrt_require_captcha')) {
             return;
         }
-        $payload = [];
-        if (isset($_POST['captcha']) && is_array($_POST['captcha'])) {
-            $payload = wp_unslash($_POST['captcha']);
-        }
-        $verify = aksrt_require_captcha('submit', is_array($payload) ? $payload : []);
-        if (is_wp_error($verify)) {
-            wp_send_json_error(['message' => $verify->get_error_message()]);
+        $verify = aksrt_require_captcha('front_submit', $_POST);
+        if ($verify !== true) {
+            wp_send_json_error([
+                'message' => is_string($verify) ? $verify : __('人机验证失败，请重试', 'aksrt'),
+            ], 400);
         }
     }