refactor: flatten src/AKSRT → src (drop theme-identifier dir)

Move all domain folders from src/AKSRT/{Domain} to src/{Domain}; remap
Composer PSR-4 "AKSRT\\": "src/"; update audit script + README + ADR
paths; remove dead tools/build-psr4-map.php (scanned deleted inc/classes).

src/Settings/DomainGroups.php

@@ -0,0 +1,181 @@
+<?php
+/**
+ * @package AKSRT
+ */
+
+namespace AKSRT\Settings;
+
+defined('ABSPATH') || exit;
+
+trait DomainGroups {
+
+    /**
+     * 获取微信通知设置
+     *
+     * @return array{enabled:bool,app_id:string,app_secret:string,template_id:string}
+     */
+    public static function get_wechat_settings(): array {
+        return Integration::get_wechat_settings();
+    }
+
+    /**
+     * 更新微信通知设置
+     *
+     * @param array $settings 合并后的完整微信配置
+     */
+    public static function update_wechat_settings(array $settings): void {
+        Integration::update_wechat_settings($settings);
+    }
+
+    /**
+     * 获取文档模式设置
+     */
+    public static function get_docs_mode_settings(): array {
+        return Integration::get_docs_mode_settings();
+    }
+
+    /**
+     * 获取全局背景设置
+     */
+    public static function get_global_background_settings(): array {
+        return DisplayRuntime::get_global_background_settings();
+    }
+
+    /**
+     * 获取页脚布局模板
+     */
+    public static function get_footer_layout_template(): string {
+        $footer = self::get_footer_settings();
+        $template = sanitize_key((string) ($footer['layout_template'] ?? 'template_1'));
+        // Legacy aliases map onto Zibll template_1 shell.
+        if (in_array($template, ['default', 'compact', 'centered', 'template_1'], true)) {
+            return 'template_1';
+        }
+        return 'template_1';
+    }
+
+    /**
+     * 获取邮件事件配置
+     *
+     * @param string $event 事件类型，留空返回全部
+     * @return array 单个事件配置或全部事件数组
+     */
+    public static function get_email_event_config(string $event = ''): array {
+        return Mail::get_email_event_config($event);
+    }
+
+    /**
+     * 邮件事件是否启用
+     */
+    public static function is_email_event_enabled(string $event): bool {
+        return Mail::is_email_event_enabled($event);
+    }
+
+    /**
+     * 通过邮件事件体系发送邮件
+     */
+    public static function send_event_email(
+        string $event,
+        string $to,
+        string $default_subject,
+        string $default_content,
+        array $placeholders = []
+    ): bool {
+        return Mail::send_event_email($event, $to, $default_subject, $default_content, $placeholders);
+    }
+
+    /** 禁封设置 */
+    public static function ban_settings(): array {
+        return UserRuntime::ban_settings();
+    }
+
+    /** 举报设置 */
+    public static function report_settings(): array {
+        return UserRuntime::report_settings();
+    }
+
+    /** 站内通知总开关 */
+    public static function message_enabled(): bool {
+        return Integration::message_enabled();
+    }
+
+    /** 通知基础设置（basic group） */
+    public static function notification_settings(): array {
+        return Integration::notification_settings();
+    }
+
+    /** 已关闭的通知推送类型列表 */
+    public static function notification_closed_types(): array {
+        return Integration::notification_closed_types();
+    }
+
+    /** 自动清理已读消息配置 */
+    public static function auto_clear_settings(): array {
+        return Integration::auto_clear_settings();
+    }
+
+    /** 私信功能配置 */
+    public static function private_message_settings(): array {
+        return Integration::private_message_settings();
+    }
+
+    /**
+     * 获取菜单项扩展 meta 字段列表
+     */
+    public static function get_menu_item_meta_fields(): array {
+        return [
+            'icon_class',
+            'icon_svg',
+            'badge_text',
+            'badge_color',
+            'menu_card_image',
+            'menu_card_desc',
+        ];
+    }
+
+    /**
+     * Capability definitions registry.
+     *
+     * @return array<string, array{label:string, roles?:string[], exclude_roles?:string[], default?:array<string,mixed>}>
+     */
+    public static function cap_definitions(): array {
+        return Capabilities::cap_definitions();
+    }
+
+    /**
+     * All role columns in the capability matrix.
+     */
+    public static function cap_role_columns(): array {
+        return Capabilities::cap_role_columns();
+    }
+
+    /**
+     * Read the user_caps matrix from settings.
+     *
+     * @return array<string, array<string, mixed>>
+     */
+    public static function get_user_capabilities(): array {
+        return Capabilities::get_user_capabilities();
+    }
+
+    /**
+     * Resolve whether a user has a specific capability.
+     */
+    public static function user_can(string $cap, int $user_id = 0, ?int $context = null): bool {
+        return Capabilities::user_can($cap, $user_id, $context);
+    }
+
+    /**
+     * 获取"网站安全"设置
+     */
+    public static function get_security_settings(): array {
+        return Capabilities::get_security_settings();
+    }
+
+    /**
+     * 获取"系统工具"设置
+     */
+    public static function get_system_tools_settings(): array {
+        return Capabilities::get_system_tools_settings();
+    }
+}