fix(report): fall back to schema defaults when the ban/report section was never saved

ban_settings()/report_settings() read the raw aksrt_settings option, so on
sites that never saved the ban/report admin section the keys are absent and
the preset reasons resolved to an empty list (frontend hard-coded fallback).
Read the section through SchemaProvider instead — read_section_settings
merges schema defaults, matching the reference theme _pz(key, default)
semantics. Also drop the dead user_report_categories parse chain that fed
a key nobody stores or consumes.

src/Settings/UserRuntime.php

@@ -178,7 +178,6 @@ class UserRuntime {
                 'public_entry'    => !isset($settings['user_report_public_entry']) || !empty($settings['user_report_public_entry']),
                 'public_notice'   => !isset($settings['user_report_public_notice']) || !empty($settings['user_report_public_notice']),
                 'ban_notice_text' => $ban_notice_text !== '' ? $ban_notice_text : __('当前账号处于限制状态，部分互动能力已关闭。', 'aksrt'),
-                'categories'      => self::parse_report_categories((string) ($settings['user_report_categories'] ?? "spam|垃圾信息\nabuse|人身攻击\ncopyright|版权投诉")),
             ],
         ];
     }
@@ -196,11 +195,26 @@ class UserRuntime {
 		}
 	}
 
+    /**
+     * 禁封/举报分区的运行时读取。
+     *
+     * get_all() 是裸 option：用户从未保存过“禁封/举报”分区时，
+     * ban_preset_reason / user_report_img_s / user_report_desc 等键不存在，
+     * schema 默认值只活在后台 UI 里。参考主题 _pz($key, $default) 的语义是
+     * 缺键即用默认值，因此这里改走 SchemaProvider 的带默认读取。
+     */
+    private static function read_report_section(): array {
+        $settings = class_exists('\AKSRT\Admin\SchemaProvider')
+            ? Settings::read_domain('users', 'report')
+            : [];
+        return is_array($settings) && $settings ? $settings : Settings::get_all();
+    }
+
     /**
      * 禁封设置
      */
     public static function ban_settings(): array {
-        $settings = Settings::get_all();
+        $settings = self::read_report_section();
 
         // 预置原因：group 数组 [{t:...}]（对齐参考主题）或旧版每行一条文本
         $reasons_raw = $settings['ban_preset_reason'] ?? null;
@@ -251,7 +265,7 @@ class UserRuntime {
      * 举报设置
      */
     public static function report_settings(): array {
-        $settings = Settings::get_all();
+        $settings = self::read_report_section();
         return [
             // 默认开启：对齐后台 schema default true 与参考主题 _pz('user_report_s', true)。
             'enabled'         => (bool) ($settings['user_report_s'] ?? $settings['user_report_enabled'] ?? true),
@@ -390,32 +404,4 @@ class UserRuntime {
         unset($raw);
         return [];
     }
-
-    /**
-     * @return array<int,array{slug:string,label:string}>
-     */
-    public static function parse_report_categories(string $raw): array {
-        $lines = preg_split('/[\r\n]+/', $raw, -1, PREG_SPLIT_NO_EMPTY);
-        $items = [];
-
-        foreach ((array) $lines as $line) {
-            $parts = array_map('trim', explode('|', (string) $line));
-            if (count($parts) < 2) {
-                continue;
-            }
-
-            $slug = sanitize_key((string) $parts[0]);
-            $label = sanitize_text_field((string) $parts[1]);
-            if ($slug === '' || $label === '') {
-                continue;
-            }
-
-            $items[] = [
-                'slug'  => $slug,
-                'label' => $label,
-            ];
-        }
-
-        return $items;
-    }
 }