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/CreditsPaymentGroups.php

@@ -0,0 +1,220 @@
+<?php
+/**
+ * @package AKSRT
+ */
+
+namespace AKSRT\Settings;
+
+defined('ABSPATH') || exit;
+
+trait CreditsPaymentGroups {
+
+    /**
+     * 积分配置（合并默认值）。
+     * @return array
+     */
+    public static function get_credit_settings(): array {
+        return CreditsRuntime::get_credit_settings();
+    }
+
+    /**
+     * Normalized runtime settings for daily sign-in rewards.
+     *
+     * @return array{enabled:bool,base:int,streak:array<int,int>,currency_name:string}
+     */
+    public static function get_signin_reward_settings(): array {
+        return CreditsRuntime::get_signin_reward_settings();
+    }
+
+    /**
+     * Normalized runtime settings for invite rewards and registration gating.
+     *
+     * @return array{
+     *   enabled:bool,
+     *   inviter_amount:int,
+     *   invitee_amount:int,
+     *   require_verify:bool,
+     *   ip_daily_cap:int,
+     *   register_field:string,
+     *   reject_invalid:bool,
+     *   registration_enabled:bool
+     * }
+     */
+    public static function get_invite_reward_settings(): array {
+        return CreditsRuntime::get_invite_reward_settings();
+    }
+
+    /**
+     * Canonical invite registration config derived from users.invite fields.
+     *
+     * @return array{
+     *   enabled:bool,
+     *   mode:string,
+     *   register_field:string,
+     *   reject_invalid:bool,
+     *   code_length:int,
+     *   open_desc:string,
+     *   must_desc:string
+     * }
+     */
+    public static function get_invite_registration_config(): array {
+        return CreditsRuntime::get_invite_registration_config();
+    }
+
+    /**
+     * 积分功能是否启用（仅积分系统开关）。
+     */
+    public static function credits_enabled(): bool {
+        return CreditsRuntime::credits_enabled();
+    }
+
+    /**
+     * 自定义货币名称，为空时回退"积分"。
+     */
+    public static function get_currency_name(): string {
+        return CreditsRuntime::get_currency_name();
+    }
+
+    /**
+     * 邀请系统是否启用（=积分系统启用 && invite_reward.enabled）。
+     * 用于 UI 入口（个人中心邀请 Tab）的展示门禁。
+     */
+    public static function invite_enabled(): bool {
+        return CreditsRuntime::invite_enabled();
+    }
+
+    /**
+     * 邀请注册功能总开关（独立于积分系统）。
+     * 控制邀请链接、注册页邀请码字段、用户中心邀请卡片的显示。
+     * 存储在 aksrt_settings（invit_code_s / invite_registration_enabled）。
+     */
+    public static function invite_registration_enabled(): bool {
+        return CreditsRuntime::invite_registration_enabled();
+    }
+
+    /**
+     * 注册页邀请码字段模式：'hidden' | 'optional' | 'required'
+     */
+    public static function invite_register_field_mode(): string {
+        return CreditsRuntime::invite_register_field_mode();
+    }
+
+    /**
+     * 必填模式下邀请码无效是否拒绝注册。
+     */
+    public static function invite_reject_invalid(): bool {
+        return CreditsRuntime::invite_reject_invalid();
+    }
+
+    public static function invite_code_length(): int {
+        return CreditsRuntime::invite_code_length();
+    }
+
+    /**
+     * 资源下载默认积分价（当资源未单独设价时回退使用）。
+     */
+    public static function download_default_cost(): int {
+        return CreditsRuntime::download_default_cost();
+    }
+
+    /**
+     * Unified paid-content and download policy settings.
+     *
+     * @return array{
+     *   download_login:bool,
+     *   download_credit:bool,
+     *   download_captcha:bool,
+     *   default_cost:int,
+     *   paid_post_types:string[],
+     *   vip_free_download:bool,
+     *   vip_exempt_roles:string[],
+     *   catalog_note:string,
+     *   manual_delivery_note:string
+     * }
+     */
+    public static function get_paid_content_settings(): array {
+        return PaymentRuntime::get_paid_content_settings();
+    }
+
+    /**
+     * Content coupon global switches.
+     *
+     * @return array{enabled:bool,desc:string}
+     */
+    public static function get_content_coupon_settings(): array {
+        return PaymentRuntime::get_content_coupon_settings();
+    }
+
+    /**
+     * @return array{enabled:bool,mode:string,packages_raw:string,package_count:int,help_text:string}
+     */
+    public static function get_payment_recharge_settings(): array {
+        return PaymentRuntime::get_payment_recharge_settings();
+    }
+
+    /**
+     * Dual-level VIP settings (Zibll pay_user_vip_1 / pay_user_vip_2).
+     *
+     * @return array<string,mixed>
+     */
+    public static function get_payment_vip_settings(): array {
+        return PaymentRuntime::get_payment_vip_settings();
+    }
+
+    /**
+     * Alias for callers that expect get_vip_settings() (header CTA, float buttons).
+     *
+     * @return array<string,mixed>
+     */
+    public static function get_vip_settings(): array {
+        return self::get_payment_vip_settings();
+    }
+
+    /**
+     * @return array{enabled:bool,share_ratio:int,settlement_threshold:int,cycle_days:int,note:string}
+     */
+    public static function get_payment_revenue_settings(): array {
+        return PaymentRuntime::get_payment_revenue_settings();
+    }
+
+    /**
+     * @return array{enabled:bool,ratio:int,window_days:int,require_paid_order:bool,note:string}
+     */
+    public static function get_payment_affiliate_settings(): array {
+        return PaymentRuntime::get_payment_affiliate_settings();
+    }
+
+    /**
+     * @return array{mode:string,test_enabled:bool,manual_review:bool,callback_secret:string,help_text:string}
+     */
+    public static function get_payment_gateway_settings(): array {
+        return PaymentRuntime::get_payment_gateway_settings();
+    }
+
+    /**
+     * 获取订单设置
+     *
+     * @return array{prefix:string,expiry:int,show_user:bool,show_paycount:bool,no_logged_in:bool,cookie_day:int,no_logged_remind:bool,wait_float:bool,order_max_minutes:int,mark:string,box_position:string,free_logged_show:bool,show_ip:bool,show_device:bool,show_order_no:bool,show_create_time:bool,show_pay_time:bool,status_texts:array,service:array}
+     */
+    public static function get_order_settings(): array {
+        return PaymentRuntime::get_order_settings();
+    }
+
+    /**
+     * 获取充值卡设置
+     *
+     * @return array{enabled:bool,desc:string,type:string,prefix:string,length:int,batch_size:int,max_redeem:int,expiry_days:int,amount:int,vip_days:int,credits:int,redeem_page:string,success_msg:string,fail_msg:string}
+     */
+    public static function get_card_pass_settings(): array {
+        return PaymentRuntime::get_card_pass_settings();
+    }
+
+    /**
+     * 获取提现管理设置
+     *
+     * @return array{min_amount:int,service_charge_rate:int,text:string}
+     */
+    public static function get_withdrawal_settings(): array {
+        return PaymentRuntime::get_withdrawal_settings();
+    }
+}