diff --git a/src/Core/DBMigratorPart2.php b/src/Core/DBMigratorPart2.php
index ada980a8..23884638 100644
--- a/src/Core/DBMigratorPart2.php
+++ b/src/Core/DBMigratorPart2.php
@@ -1,563 +1,564 @@
-<?php
-/**
- * @package AKSRT
- */
-
-namespace AKSRT\Core;
-
-defined('ABSPATH') || exit;
-
-trait DBMigratorPart2 {
-
-
-    /**
-     * 立即运行（供激活钩子直接调用）。
-     */
-    public static function run(): void {
-        global $wpdb;
-        require_once ABSPATH . 'wp-admin/includes/upgrade.php';
-
-        $charset_collate = $wpdb->get_charset_collate();
-        $prefix = $wpdb->prefix;
-
-        // ---------- 1. 统一资产账户与不可变账本 ----------
-        $sql_asset_account = "CREATE TABLE {$prefix}aksrt_asset_account (
-            user_id BIGINT UNSIGNED NOT NULL,
-            asset VARCHAR(16) NOT NULL,
-            balance_minor BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            version BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            updated_at DATETIME(6) NOT NULL,
-            PRIMARY KEY  (user_id, asset),
-            KEY idx_asset_balance (asset, balance_minor)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_asset_account);
-
-        $sql_asset_transaction = "CREATE TABLE {$prefix}aksrt_asset_transaction (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            operation_key VARCHAR(191) NOT NULL,
-            payload_hash CHAR(64) NOT NULL,
-            reason VARCHAR(64) NOT NULL,
-            ref_type VARCHAR(32) DEFAULT NULL,
-            ref_key VARCHAR(191) DEFAULT NULL,
-            actor_user_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            metadata LONGTEXT DEFAULT NULL,
-            ip VARCHAR(64) DEFAULT NULL,
-            ua VARCHAR(255) DEFAULT NULL,
-            created_at DATETIME(6) NOT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_operation_key (operation_key),
-            KEY idx_reason_time (reason, created_at),
-            KEY idx_reference (ref_type, ref_key)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_asset_transaction);
-
-        $sql_asset_entry = "CREATE TABLE {$prefix}aksrt_asset_entry (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            transaction_id BIGINT UNSIGNED NOT NULL,
-            line_no SMALLINT UNSIGNED NOT NULL,
-            user_id BIGINT UNSIGNED NOT NULL,
-            asset VARCHAR(16) NOT NULL,
-            entry_type VARCHAR(32) NOT NULL,
-            delta_minor BIGINT NOT NULL,
-            balance_after_minor BIGINT UNSIGNED NOT NULL,
-            counterparty_user_id BIGINT UNSIGNED DEFAULT NULL,
-            remark VARCHAR(255) DEFAULT NULL,
-            created_at DATETIME(6) NOT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_transaction_line (transaction_id, line_no),
-            KEY idx_user_asset_time (user_id, asset, created_at, id),
-            KEY idx_transaction (transaction_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_asset_entry);
-
-        // 后台「资金流水」页的默认查询是 WHERE 1=1 ORDER BY created_at DESC, id DESC LIMIT n
-        // 外加同条件的 COUNT(*)，且界面上的日期区间筛选也只有 created_at 可用。
-        // 索引必须能以 created_at 为前导列，否则每次翻页都是全表扫描 + filesort，
-        // 而 idx_flow_event_time 的前导列是 event_type（筛选时可空），救不了这两条查询。
-        $sql_financial_flow = "CREATE TABLE {$prefix}aksrt_financial_flow (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            flow_number VARCHAR(32) NOT NULL,
-            operation_key VARCHAR(191) NOT NULL,
-            event_type VARCHAR(64) NOT NULL,
-            ref_type VARCHAR(32) DEFAULT NULL,
-            ref_key VARCHAR(191) DEFAULT NULL,
-            order_number VARCHAR(32) DEFAULT NULL,
-            withdrawal_number VARCHAR(32) DEFAULT NULL,
-            ledger_transaction_id BIGINT UNSIGNED DEFAULT NULL,
-            provider_transaction_id VARCHAR(128) DEFAULT NULL,
-            metadata LONGTEXT DEFAULT NULL,
-            created_at DATETIME(6) NOT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_flow_number (flow_number),
-            UNIQUE KEY uniq_flow_operation (operation_key),
-            UNIQUE KEY uniq_flow_ledger_transaction (ledger_transaction_id),
-            KEY idx_flow_created (created_at),
-            KEY idx_flow_event_time (event_type, created_at),
-            KEY idx_flow_order (order_number),
-            KEY idx_flow_withdrawal (withdrawal_number),
-            KEY idx_flow_reference (ref_type, ref_key),
-            KEY idx_flow_provider_transaction (provider_transaction_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_financial_flow);
-
-        $sql_financial_flow_entry = "CREATE TABLE {$prefix}aksrt_financial_flow_entry (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            flow_id BIGINT UNSIGNED NOT NULL,
-            line_no SMALLINT UNSIGNED NOT NULL,
-            user_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            asset VARCHAR(16) NOT NULL,
-            direction VARCHAR(8) NOT NULL,
-            entry_type VARCHAR(32) NOT NULL,
-            delta_minor BIGINT NOT NULL,
-            balance_after_minor BIGINT UNSIGNED DEFAULT NULL,
-            counterparty_user_id BIGINT UNSIGNED DEFAULT NULL,
-            remark VARCHAR(255) DEFAULT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_flow_line (flow_id, line_no),
-            KEY idx_flow_entry_user (user_id, flow_id),
-            KEY idx_flow_entry_asset (asset, flow_id),
-            KEY idx_flow_entry_direction (direction, flow_id),
-            KEY idx_flow_entry_counterparty (counterparty_user_id, flow_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_financial_flow_entry);
-
-        // ---------- 2. 签到 ----------
-        $sql_signin = "CREATE TABLE {$prefix}aksrt_signin_log (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            user_id BIGINT UNSIGNED NOT NULL,
-            signin_date DATE NOT NULL,
-            streak INT NOT NULL DEFAULT 1,
-            reward INT NOT NULL DEFAULT 0,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_user_date (user_id, signin_date),
-            KEY idx_user (user_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_signin);
-
-        // ---------- 3. 下载 token ----------
-        $sql_dl_token = "CREATE TABLE {$prefix}aksrt_dl_token (
-            token CHAR(48) NOT NULL,
-            user_id BIGINT UNSIGNED NOT NULL,
-            post_id BIGINT UNSIGNED NOT NULL,
-            source_index INT NOT NULL DEFAULT 0,
-            cost INT NOT NULL DEFAULT 0,
-            ip_bind VARCHAR(64) DEFAULT NULL,
-            ua_hash CHAR(40) DEFAULT NULL,
-            used_count INT NOT NULL DEFAULT 0,
-            max_uses INT NOT NULL DEFAULT 1,
-            expires_at DATETIME NOT NULL,
-            created_at DATETIME NOT NULL,
-            PRIMARY KEY  (token),
-            KEY idx_expires (expires_at),
-            KEY idx_user (user_id),
-            KEY idx_post (post_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_dl_token);
-
-        // ---------- 5. 用户通知收件箱 ----------
-        $sql_notification = "CREATE TABLE {$prefix}aksrt_notification (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            user_id BIGINT UNSIGNED NOT NULL,
-            type VARCHAR(32) NOT NULL,
-            title VARCHAR(191) NOT NULL,
-            description TEXT DEFAULT NULL,
-            target_url TEXT DEFAULT NULL,
-            is_read TINYINT(1) NOT NULL DEFAULT 0,
-            created_at DATETIME NOT NULL,
-            read_at DATETIME DEFAULT NULL,
-            PRIMARY KEY  (id),
-            KEY idx_user_created (user_id, created_at),
-            KEY idx_user_read (user_id, is_read)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_notification);
-
-        // ---------- 8. 订单表 ----------
-        $sql_order = "CREATE TABLE {$prefix}aksrt_order (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            order_number VARCHAR(32) NOT NULL,
-            request_key VARCHAR(191) DEFAULT NULL,
-            user_id BIGINT UNSIGNED NOT NULL,
-            product_type VARCHAR(32) NOT NULL DEFAULT '',
-            product_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            amount DECIMAL(10,2) NOT NULL DEFAULT 0,
-            currency VARCHAR(8) NOT NULL DEFAULT 'CNY',
-            status VARCHAR(20) NOT NULL DEFAULT 'pending',
-            shipping_status TINYINT NOT NULL DEFAULT 0,
-            payment_method VARCHAR(32) NOT NULL DEFAULT '',
-            payment_transaction_id VARCHAR(128) NOT NULL DEFAULT '',
-            created_at DATETIME NOT NULL,
-            paid_at DATETIME DEFAULT NULL,
-            delivered_at DATETIME DEFAULT NULL,
-            completed_at DATETIME DEFAULT NULL,
-            cancelled_at DATETIME DEFAULT NULL,
-            refunded_at DATETIME DEFAULT NULL,
-            expires_at DATETIME DEFAULT NULL,
-            note TEXT DEFAULT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_order_number (order_number),
-            UNIQUE KEY uniq_request_key (request_key),
-            KEY idx_user (user_id),
-            KEY idx_user_status_created (user_id, status, created_at),
-            KEY idx_status (status),
-            KEY idx_created (created_at),
-            KEY idx_product (product_type, product_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_order);
-
-        // ---------- order after-sales ----------
-        $sql_order_aftersale = "CREATE TABLE {$prefix}aksrt_order_aftersale (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            order_number VARCHAR(32) NOT NULL,
-            user_id BIGINT UNSIGNED NOT NULL,
-            aftersale_type VARCHAR(24) NOT NULL DEFAULT 'refund',
-            reason TEXT NOT NULL,
-            images LONGTEXT DEFAULT NULL,
-            refund_amount VARCHAR(32) NOT NULL DEFAULT '0',
-            status VARCHAR(20) NOT NULL DEFAULT 'pending',
-            admin_note TEXT DEFAULT NULL,
-            gateway_request_id VARCHAR(128) DEFAULT NULL,
-            gateway_refund_id VARCHAR(128) DEFAULT NULL,
-            gateway_result LONGTEXT DEFAULT NULL,
-            created_at DATETIME NOT NULL,
-            reviewed_at DATETIME DEFAULT NULL,
-            completed_at DATETIME DEFAULT NULL,
-            PRIMARY KEY  (id),
-            KEY idx_order_status (order_number, status),
-            KEY idx_user_created (user_id, created_at),
-            KEY idx_status_created (status, created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_order_aftersale);
-
-        // ---------- 9. 作者收益台账 ----------
-        $sql_revenue = "CREATE TABLE {$prefix}aksrt_revenue (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            author_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            order_number VARCHAR(32) NOT NULL DEFAULT '',
-            post_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            buyer_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            currency VARCHAR(8) NOT NULL DEFAULT 'CNY',
-            original_amount DECIMAL(18,2) NOT NULL DEFAULT 0,
-            share_ratio DECIMAL(5,2) NOT NULL DEFAULT 0,
-            author_level TINYINT UNSIGNED NOT NULL DEFAULT 0,
-            amount DECIMAL(18,2) NOT NULL DEFAULT 0,
-            type VARCHAR(32) NOT NULL DEFAULT 'order',
-            status VARCHAR(20) NOT NULL DEFAULT 'pending',
-            reversal_amount DECIMAL(18,2) NOT NULL DEFAULT 0,
-            error_message TEXT DEFAULT NULL,
-            audit_json LONGTEXT DEFAULT NULL,
-            created_at DATETIME NOT NULL,
-            settled_at DATETIME DEFAULT NULL,
-            reversed_at DATETIME DEFAULT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_creator_order (author_id, order_number),
-            KEY idx_author (author_id),
-            KEY idx_order (order_number),
-            KEY idx_post (post_id),
-            KEY idx_buyer (buyer_id),
-            KEY idx_currency (currency),
-            KEY idx_status (status),
-            KEY idx_created (created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_revenue);
-
-        // ---------- 10. 提现台账 ----------
-        $sql_withdrawal = "CREATE TABLE {$prefix}aksrt_withdrawal (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            withdrawal_number VARCHAR(32) NOT NULL,
-            user_id BIGINT UNSIGNED NOT NULL,
-            amount DECIMAL(10,2) NOT NULL DEFAULT 0,
-            gross_amount DECIMAL(10,2) NOT NULL DEFAULT 0,
-            method VARCHAR(32) NOT NULL DEFAULT '',
-            account_info TEXT DEFAULT NULL,
-            status VARCHAR(20) NOT NULL DEFAULT 'pending',
-            operation_key VARCHAR(191) DEFAULT NULL,
-            ledger_transaction_id BIGINT UNSIGNED DEFAULT NULL,
-            created_at DATETIME NOT NULL,
-            processed_at DATETIME DEFAULT NULL,
-            note TEXT DEFAULT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_withdrawal_number (withdrawal_number),
-            UNIQUE KEY uniq_withdrawal_operation (operation_key),
-            UNIQUE KEY uniq_ledger_transaction (ledger_transaction_id),
-            KEY idx_user (user_id),
-            KEY idx_user_created (user_id, created_at),
-            KEY idx_status (status),
-            KEY idx_created (created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_withdrawal);
-
-        // ---------- 11. 举报工单 ----------
-        $sql_report = "CREATE TABLE {$prefix}aksrt_report (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            reporter_id BIGINT UNSIGNED NOT NULL,
-            target_type VARCHAR(20) NOT NULL,
-            target_id BIGINT UNSIGNED NOT NULL,
-            reason TEXT NOT NULL,
-            category VARCHAR(40) NOT NULL DEFAULT '',
-            status VARCHAR(20) NOT NULL DEFAULT 'pending',
-            created_at DATETIME NOT NULL,
-            updated_at DATETIME DEFAULT NULL,
-            notes_json TEXT DEFAULT NULL,
-            PRIMARY KEY  (id),
-            KEY idx_status (status),
-            KEY idx_target (target_type, target_id),
-            KEY idx_reporter (reporter_id),
-            KEY idx_created (created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_report);
-
-        // ---------- 12. 用户限制/封禁 ----------
-        $sql_restriction = "CREATE TABLE {$prefix}aksrt_user_restriction (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            user_id BIGINT UNSIGNED NOT NULL,
-            type VARCHAR(20) NOT NULL DEFAULT 'warn',
-            reason TEXT NOT NULL,
-            scope VARCHAR(20) NOT NULL DEFAULT 'global',
-            expires_at DATETIME DEFAULT NULL,
-            created_by BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            created_at DATETIME NOT NULL,
-            PRIMARY KEY  (id),
-            KEY idx_user (user_id),
-            KEY idx_type (type),
-            KEY idx_scope (scope),
-            KEY idx_expires (expires_at),
-            KEY idx_created (created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_restriction);
-
-        // ── follow ──
-        $sql_follow = "CREATE TABLE {$prefix}aksrt_follow (
-            id           BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            follower_id  BIGINT UNSIGNED NOT NULL,
-            following_id BIGINT UNSIGNED NOT NULL,
-            created_at   DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
-            PRIMARY KEY  (id),
-            UNIQUE KEY idx_pair (follower_id, following_id),
-            KEY idx_following (following_id),
-            KEY idx_created (created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_follow);
-
-        // ── coupon ──
-        $sql_coupon = "CREATE TABLE {$prefix}aksrt_coupon (
-            id           BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            code         VARCHAR(60) NOT NULL DEFAULT '',
-            type         VARCHAR(20) NOT NULL DEFAULT 'fixed',
-            value        DECIMAL(10,2) NOT NULL DEFAULT 0,
-            min_amount   DECIMAL(10,2) NOT NULL DEFAULT 0,
-            usage_limit  INT UNSIGNED NOT NULL DEFAULT 0,
-            used_count   INT UNSIGNED NOT NULL DEFAULT 0,
-            expires_at   DATETIME DEFAULT NULL,
-            per_user_limit INT UNSIGNED NOT NULL DEFAULT 0,
-            product_scope TEXT DEFAULT NULL,
-            max_discount DECIMAL(10,2) NOT NULL DEFAULT 0,
-            status       VARCHAR(20) NOT NULL DEFAULT 'active',
-            created_at   DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
-            PRIMARY KEY  (id),
-            UNIQUE KEY idx_code (code),
-            KEY idx_status (status),
-            KEY idx_expires (expires_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_coupon);
-
-        // ── coupon_usage (R68) ──
-        $sql_coupon_usage = "CREATE TABLE {$prefix}aksrt_coupon_usage (
-            id           BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            coupon_id    BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            user_id      BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            order_number VARCHAR(32) NOT NULL DEFAULT '',
-            discount     DECIMAL(10,2) NOT NULL DEFAULT 0,
-            created_at   DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
-            PRIMARY KEY  (id),
-            KEY idx_coupon (coupon_id),
-            KEY idx_user (user_id),
-            UNIQUE KEY uniq_coupon_usage_order (order_number)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_coupon_usage);
-
-		// ── typed charge cards ──
-        $sql_charge_card = "CREATE TABLE {$prefix}aksrt_charge_card (
-            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            card            VARCHAR(60) NOT NULL DEFAULT '',
-            password        VARCHAR(80) NOT NULL DEFAULT '',
-            type            VARCHAR(20) NOT NULL DEFAULT 'balance',
-            amount          DECIMAL(10,2) NOT NULL DEFAULT 0,
-            balance         DECIMAL(10,2) NOT NULL DEFAULT 0,
-            status          VARCHAR(20) NOT NULL DEFAULT 'active',
-            meta            LONGTEXT DEFAULT NULL,
-            order_number    VARCHAR(32) NOT NULL DEFAULT '',
-            used_by         BIGINT UNSIGNED DEFAULT NULL,
-            used_at         DATETIME DEFAULT NULL,
-            expires_at      DATETIME DEFAULT NULL,
-            created_at      DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
-            note            TEXT DEFAULT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY idx_password (password),
-            KEY idx_card (card),
-            KEY idx_type (type),
-            KEY idx_status (status),
-            KEY idx_used_by (used_by),
-            KEY idx_order_number (order_number),
-            KEY idx_expires (expires_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_charge_card);
-
-        // ── one-time invite codes (registration gate + per-batch rewards) ──
-        $sql_invite_code = "CREATE TABLE {$prefix}aksrt_invite_code (
-            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            code            VARCHAR(32) NOT NULL,
-            batch_id        VARCHAR(32) NOT NULL DEFAULT '',
-            remark          VARCHAR(191) NOT NULL DEFAULT '',
-            rewards         TEXT DEFAULT NULL,
-            max_uses        INT UNSIGNED NOT NULL DEFAULT 1,
-            used_count      INT UNSIGNED NOT NULL DEFAULT 0,
-            status          VARCHAR(20) NOT NULL DEFAULT 'active',
-            expires_at      DATETIME DEFAULT NULL,
-            created_by      BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            created_at      DATETIME NOT NULL,
-            updated_at      DATETIME NOT NULL DEFAULT '1970-01-01 00:00:00',
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_invite_code (code),
-            KEY idx_batch (batch_id),
-            KEY idx_status (status),
-            KEY idx_expires (expires_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_invite_code);
-
-        // ── invite-code usage log (who consumed which code) ──
-        $sql_invite_code_usage = "CREATE TABLE {$prefix}aksrt_invite_code_usage (
-            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            code_id         BIGINT UNSIGNED NOT NULL,
-            user_id         BIGINT UNSIGNED NOT NULL,
-            used_at         DATETIME NOT NULL,
-            PRIMARY KEY  (id),
-            UNIQUE KEY uniq_invite_usage (code_id, user_id),
-            KEY idx_usage_user (user_id),
-            KEY idx_usage_code (code_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_invite_code_usage);
-
-        // ── canonical Ref attribution and permanent user binding ──
-        $sql_affiliate_relation = "CREATE TABLE {$prefix}aksrt_affiliate_relation (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            referral_code VARCHAR(32) NOT NULL,
-            promoter_id BIGINT UNSIGNED NOT NULL,
-            invitee_id BIGINT UNSIGNED DEFAULT NULL,
-            first_touch_at DATETIME NOT NULL,
-            bound_at DATETIME DEFAULT NULL,
-            status VARCHAR(20) NOT NULL DEFAULT 'captured',
-            reward_status VARCHAR(20) NOT NULL DEFAULT 'skipped',
-            rewarded_at DATETIME DEFAULT NULL,
-            registration_ip VARCHAR(64) DEFAULT NULL,
-            created_at DATETIME NOT NULL,
-            PRIMARY KEY (id),
-            KEY idx_referral_code (referral_code),
-            UNIQUE KEY uniq_invitee (invitee_id),
-            KEY idx_promoter (promoter_id),
-            KEY idx_status_touch (status, first_touch_at),
-            KEY idx_reward_status (reward_status),
-            KEY idx_reward_ip (registration_ip, rewarded_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_affiliate_relation);
-
-        // ── immutable commission ledger ──
-        // 佣金即时入账（无冻结/结算期）：下单支付即 credit 到 COMMISSION 资金池，
-        // 本表仅作佣金明细账 + 退款冲正的溯源记录。status: credited | cancelled。
-        $sql_commission_ledger = "CREATE TABLE {$prefix}aksrt_commission_ledger (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            promoter_id BIGINT UNSIGNED NOT NULL,
-            source_user_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            order_number VARCHAR(64) NOT NULL,
-            order_type VARCHAR(32) NOT NULL,
-            eligible_base DECIMAL(18,2) NOT NULL DEFAULT 0,
-            ratio DECIMAL(8,4) NOT NULL DEFAULT 0,
-            original_amount DECIMAL(18,2) NOT NULL DEFAULT 0,
-            adjustment_total DECIMAL(18,2) NOT NULL DEFAULT 0,
-            status VARCHAR(20) NOT NULL DEFAULT 'credited',
-            idempotency_key VARCHAR(128) NOT NULL,
-			cancel_operation_key VARCHAR(191) DEFAULT NULL,
-			cancel_payload_hash CHAR(64) DEFAULT NULL,
-            created_at DATETIME NOT NULL,
-            note TEXT DEFAULT NULL,
-            PRIMARY KEY (id),
-            UNIQUE KEY uniq_commission_idempotency (idempotency_key),
-			UNIQUE KEY uniq_commission_cancel_operation (cancel_operation_key),
-            KEY idx_promoter_status (promoter_id, status),
-            KEY idx_order_type (order_number, order_type),
-            KEY idx_created (created_at)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_commission_ledger);
-
-        // 佣金欠款挂账：退款全额收回后，若佣金池不足产生的差额记为欠款，
-        // 后续新增佣金先抵扣欠款再入池。每用户一行。
-        $sql_commission_debt = "CREATE TABLE {$prefix}aksrt_commission_debt (
-            user_id BIGINT UNSIGNED NOT NULL,
-            debt_minor BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            updated_at DATETIME NOT NULL,
-            PRIMARY KEY (user_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_commission_debt);
-
-        // ── immutable commission adjustments (refund/debt/manual) ──
-        $sql_commission_adjustment = "CREATE TABLE {$prefix}aksrt_commission_adjustment (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            ledger_id BIGINT UNSIGNED NOT NULL,
-            promoter_id BIGINT UNSIGNED NOT NULL,
-            amount DECIMAL(18,2) NOT NULL DEFAULT 0,
-            reason VARCHAR(32) NOT NULL,
-            source_key VARCHAR(128) NOT NULL,
-            operator_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            created_at DATETIME NOT NULL,
-            note TEXT DEFAULT NULL,
-            PRIMARY KEY (id),
-            UNIQUE KEY uniq_adjustment_source (source_key),
-            KEY idx_ledger (ledger_id),
-            KEY idx_promoter (promoter_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_commission_adjustment);
-
-        // ── payout account snapshots ──
-        $sql_payout_account = "CREATE TABLE {$prefix}aksrt_payout_account (
-            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            user_id BIGINT UNSIGNED NOT NULL,
-            channel VARCHAR(20) NOT NULL,
-            attachment_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            account_hash CHAR(64) NOT NULL DEFAULT '',
-            status VARCHAR(20) NOT NULL DEFAULT 'active',
-            created_at DATETIME NOT NULL,
-            updated_at DATETIME NOT NULL,
-            PRIMARY KEY (id),
-            UNIQUE KEY uniq_user_channel (user_id, channel),
-            KEY idx_user_status (user_id, status)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_payout_account);
-
-        // ── order_items (§6.5 多商品多商家) ──
-        $sql_order_items = "CREATE TABLE {$prefix}aksrt_order_item (
-            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
-            order_number    VARCHAR(32) NOT NULL DEFAULT '',
-            product_id      BIGINT UNSIGNED NOT NULL DEFAULT 0,
-            product_title   VARCHAR(255) NOT NULL DEFAULT '',
-            options_key     VARCHAR(255) NOT NULL DEFAULT '',
-            options_label   VARCHAR(255) NOT NULL DEFAULT '',
-            quantity        INT UNSIGNED NOT NULL DEFAULT 1,
-            unit_price      DECIMAL(10,2) NOT NULL DEFAULT 0,
-            total_price     DECIMAL(10,2) NOT NULL DEFAULT 0,
-            discount_amount DECIMAL(10,2) NOT NULL DEFAULT 0,
-            shipping_fee    DECIMAL(10,2) NOT NULL DEFAULT 0,
-            pay_price       DECIMAL(10,2) NOT NULL DEFAULT 0,
-            shipping_type   VARCHAR(20) NOT NULL DEFAULT 'express',
-            auto_delivery_content TEXT DEFAULT NULL,
-            discount_hit    TEXT DEFAULT NULL,
-            gift_data       TEXT DEFAULT NULL,
-            image           VARCHAR(512) NOT NULL DEFAULT '',
-            PRIMARY KEY  (id),
-            KEY idx_order (order_number),
-            KEY idx_product (product_id)
-        ) ENGINE=InnoDB {$charset_collate};";
-        dbDelta($sql_order_items);
-
-        self::migrate_identity_tables($prefix, $charset_collate);
-        self::migrate_vip_tables($prefix, $charset_collate);
-    }
-}
+<?php
+/**
+ * @package AKSRT
+ */
+
+namespace AKSRT\Core;
+
+defined('ABSPATH') || exit;
+
+trait DBMigratorPart2 {
+
+
+    /**
+     * 立即运行（供激活钩子直接调用）。
+     */
+    public static function run(): void {
+        global $wpdb;
+        require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+
+        $charset_collate = $wpdb->get_charset_collate();
+        $prefix = $wpdb->prefix;
+
+        // ---------- 1. 统一资产账户与不可变账本 ----------
+        $sql_asset_account = "CREATE TABLE {$prefix}aksrt_asset_account (
+            user_id BIGINT UNSIGNED NOT NULL,
+            asset VARCHAR(16) NOT NULL,
+            balance_minor BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            version BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            updated_at DATETIME(6) NOT NULL,
+            PRIMARY KEY  (user_id, asset),
+            KEY idx_asset_balance (asset, balance_minor)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_asset_account);
+
+        $sql_asset_transaction = "CREATE TABLE {$prefix}aksrt_asset_transaction (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            operation_key VARCHAR(191) NOT NULL,
+            payload_hash CHAR(64) NOT NULL,
+            reason VARCHAR(64) NOT NULL,
+            ref_type VARCHAR(32) DEFAULT NULL,
+            ref_key VARCHAR(191) DEFAULT NULL,
+            actor_user_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            metadata LONGTEXT DEFAULT NULL,
+            ip VARCHAR(64) DEFAULT NULL,
+            ua VARCHAR(255) DEFAULT NULL,
+            created_at DATETIME(6) NOT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_operation_key (operation_key),
+            KEY idx_reason_time (reason, created_at),
+            KEY idx_reference (ref_type, ref_key)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_asset_transaction);
+
+        $sql_asset_entry = "CREATE TABLE {$prefix}aksrt_asset_entry (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            transaction_id BIGINT UNSIGNED NOT NULL,
+            line_no SMALLINT UNSIGNED NOT NULL,
+            user_id BIGINT UNSIGNED NOT NULL,
+            asset VARCHAR(16) NOT NULL,
+            entry_type VARCHAR(32) NOT NULL,
+            delta_minor BIGINT NOT NULL,
+            balance_after_minor BIGINT UNSIGNED NOT NULL,
+            counterparty_user_id BIGINT UNSIGNED DEFAULT NULL,
+            remark VARCHAR(255) DEFAULT NULL,
+            created_at DATETIME(6) NOT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_transaction_line (transaction_id, line_no),
+            KEY idx_user_asset_time (user_id, asset, created_at, id),
+            KEY idx_transaction (transaction_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_asset_entry);
+
+        // 后台「资金流水」页的默认查询是 WHERE 1=1 ORDER BY created_at DESC, id DESC LIMIT n
+        // 外加同条件的 COUNT(*)，且界面上的日期区间筛选也只有 created_at 可用。
+        // 索引必须能以 created_at 为前导列，否则每次翻页都是全表扫描 + filesort，
+        // 而 idx_flow_event_time 的前导列是 event_type（筛选时可空），救不了这两条查询。
+        $sql_financial_flow = "CREATE TABLE {$prefix}aksrt_financial_flow (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            flow_number VARCHAR(32) NOT NULL,
+            operation_key VARCHAR(191) NOT NULL,
+            event_type VARCHAR(64) NOT NULL,
+            ref_type VARCHAR(32) DEFAULT NULL,
+            ref_key VARCHAR(191) DEFAULT NULL,
+            order_number VARCHAR(32) DEFAULT NULL,
+            withdrawal_number VARCHAR(32) DEFAULT NULL,
+            ledger_transaction_id BIGINT UNSIGNED DEFAULT NULL,
+            provider_transaction_id VARCHAR(128) DEFAULT NULL,
+            metadata LONGTEXT DEFAULT NULL,
+            created_at DATETIME(6) NOT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_flow_number (flow_number),
+            UNIQUE KEY uniq_flow_operation (operation_key),
+            UNIQUE KEY uniq_flow_ledger_transaction (ledger_transaction_id),
+            KEY idx_flow_created (created_at),
+            KEY idx_flow_event_time (event_type, created_at),
+            KEY idx_flow_order (order_number),
+            KEY idx_flow_withdrawal (withdrawal_number),
+            KEY idx_flow_reference (ref_type, ref_key),
+            KEY idx_flow_provider_transaction (provider_transaction_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_financial_flow);
+
+        $sql_financial_flow_entry = "CREATE TABLE {$prefix}aksrt_financial_flow_entry (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            flow_id BIGINT UNSIGNED NOT NULL,
+            line_no SMALLINT UNSIGNED NOT NULL,
+            user_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            asset VARCHAR(16) NOT NULL,
+            direction VARCHAR(8) NOT NULL,
+            entry_type VARCHAR(32) NOT NULL,
+            delta_minor BIGINT NOT NULL,
+            balance_after_minor BIGINT UNSIGNED DEFAULT NULL,
+            counterparty_user_id BIGINT UNSIGNED DEFAULT NULL,
+            remark VARCHAR(255) DEFAULT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_flow_line (flow_id, line_no),
+            KEY idx_flow_entry_user (user_id, flow_id),
+            KEY idx_flow_entry_asset (asset, flow_id),
+            KEY idx_flow_entry_direction (direction, flow_id),
+            KEY idx_flow_entry_counterparty (counterparty_user_id, flow_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_financial_flow_entry);
+
+        // ---------- 2. 签到 ----------
+        $sql_signin = "CREATE TABLE {$prefix}aksrt_signin_log (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            user_id BIGINT UNSIGNED NOT NULL,
+            signin_date DATE NOT NULL,
+            streak INT NOT NULL DEFAULT 1,
+            reward INT NOT NULL DEFAULT 0,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_user_date (user_id, signin_date),
+            KEY idx_user (user_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_signin);
+
+        // ---------- 3. 下载 token ----------
+        $sql_dl_token = "CREATE TABLE {$prefix}aksrt_dl_token (
+            token CHAR(48) NOT NULL,
+            user_id BIGINT UNSIGNED NOT NULL,
+            post_id BIGINT UNSIGNED NOT NULL,
+            source_index INT NOT NULL DEFAULT 0,
+            cost INT NOT NULL DEFAULT 0,
+            ip_bind VARCHAR(64) DEFAULT NULL,
+            ua_hash CHAR(40) DEFAULT NULL,
+            used_count INT NOT NULL DEFAULT 0,
+            max_uses INT NOT NULL DEFAULT 1,
+            expires_at DATETIME NOT NULL,
+            created_at DATETIME NOT NULL,
+            PRIMARY KEY  (token),
+            KEY idx_expires (expires_at),
+            KEY idx_user (user_id),
+            KEY idx_post (post_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_dl_token);
+
+        // ---------- 5. 用户通知收件箱 ----------
+        $sql_notification = "CREATE TABLE {$prefix}aksrt_notification (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            user_id BIGINT UNSIGNED NOT NULL,
+            type VARCHAR(32) NOT NULL,
+            title VARCHAR(191) NOT NULL,
+            description TEXT DEFAULT NULL,
+            target_url TEXT DEFAULT NULL,
+            is_read TINYINT(1) NOT NULL DEFAULT 0,
+            created_at DATETIME NOT NULL,
+            read_at DATETIME DEFAULT NULL,
+            PRIMARY KEY  (id),
+            KEY idx_user_created (user_id, created_at),
+            KEY idx_user_read (user_id, is_read)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_notification);
+
+        // ---------- 8. 订单表 ----------
+        $sql_order = "CREATE TABLE {$prefix}aksrt_order (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            order_number VARCHAR(32) NOT NULL,
+            request_key VARCHAR(191) DEFAULT NULL,
+            user_id BIGINT UNSIGNED NOT NULL,
+            product_type VARCHAR(32) NOT NULL DEFAULT '',
+            product_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            amount DECIMAL(10,2) NOT NULL DEFAULT 0,
+            currency VARCHAR(8) NOT NULL DEFAULT 'CNY',
+            status VARCHAR(20) NOT NULL DEFAULT 'pending',
+            shipping_status TINYINT NOT NULL DEFAULT 0,
+            payment_method VARCHAR(32) NOT NULL DEFAULT '',
+            payment_transaction_id VARCHAR(128) NOT NULL DEFAULT '',
+            created_at DATETIME NOT NULL,
+            paid_at DATETIME DEFAULT NULL,
+            delivered_at DATETIME DEFAULT NULL,
+            completed_at DATETIME DEFAULT NULL,
+            cancelled_at DATETIME DEFAULT NULL,
+            refunded_at DATETIME DEFAULT NULL,
+            expires_at DATETIME DEFAULT NULL,
+            note TEXT DEFAULT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_order_number (order_number),
+            UNIQUE KEY uniq_request_key (request_key),
+            KEY idx_user (user_id),
+            KEY idx_user_status_created (user_id, status, created_at),
+            KEY idx_status (status),
+            KEY idx_created (created_at),
+            KEY idx_product (product_type, product_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_order);
+
+        // ---------- order after-sales ----------
+        $sql_order_aftersale = "CREATE TABLE {$prefix}aksrt_order_aftersale (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            order_number VARCHAR(32) NOT NULL,
+            user_id BIGINT UNSIGNED NOT NULL,
+            aftersale_type VARCHAR(24) NOT NULL DEFAULT 'refund',
+            reason TEXT NOT NULL,
+            apply_form LONGTEXT DEFAULT NULL,
+            images LONGTEXT DEFAULT NULL,
+            refund_amount VARCHAR(32) NOT NULL DEFAULT '0',
+            status VARCHAR(20) NOT NULL DEFAULT 'pending',
+            admin_note TEXT DEFAULT NULL,
+            gateway_request_id VARCHAR(128) DEFAULT NULL,
+            gateway_refund_id VARCHAR(128) DEFAULT NULL,
+            gateway_result LONGTEXT DEFAULT NULL,
+            created_at DATETIME NOT NULL,
+            reviewed_at DATETIME DEFAULT NULL,
+            completed_at DATETIME DEFAULT NULL,
+            PRIMARY KEY  (id),
+            KEY idx_order_status (order_number, status),
+            KEY idx_user_created (user_id, created_at),
+            KEY idx_status_created (status, created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_order_aftersale);
+
+        // ---------- 9. 作者收益台账 ----------
+        $sql_revenue = "CREATE TABLE {$prefix}aksrt_revenue (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            author_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            order_number VARCHAR(32) NOT NULL DEFAULT '',
+            post_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            buyer_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            currency VARCHAR(8) NOT NULL DEFAULT 'CNY',
+            original_amount DECIMAL(18,2) NOT NULL DEFAULT 0,
+            share_ratio DECIMAL(5,2) NOT NULL DEFAULT 0,
+            author_level TINYINT UNSIGNED NOT NULL DEFAULT 0,
+            amount DECIMAL(18,2) NOT NULL DEFAULT 0,
+            type VARCHAR(32) NOT NULL DEFAULT 'order',
+            status VARCHAR(20) NOT NULL DEFAULT 'pending',
+            reversal_amount DECIMAL(18,2) NOT NULL DEFAULT 0,
+            error_message TEXT DEFAULT NULL,
+            audit_json LONGTEXT DEFAULT NULL,
+            created_at DATETIME NOT NULL,
+            settled_at DATETIME DEFAULT NULL,
+            reversed_at DATETIME DEFAULT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_creator_order (author_id, order_number),
+            KEY idx_author (author_id),
+            KEY idx_order (order_number),
+            KEY idx_post (post_id),
+            KEY idx_buyer (buyer_id),
+            KEY idx_currency (currency),
+            KEY idx_status (status),
+            KEY idx_created (created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_revenue);
+
+        // ---------- 10. 提现台账 ----------
+        $sql_withdrawal = "CREATE TABLE {$prefix}aksrt_withdrawal (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            withdrawal_number VARCHAR(32) NOT NULL,
+            user_id BIGINT UNSIGNED NOT NULL,
+            amount DECIMAL(10,2) NOT NULL DEFAULT 0,
+            gross_amount DECIMAL(10,2) NOT NULL DEFAULT 0,
+            method VARCHAR(32) NOT NULL DEFAULT '',
+            account_info TEXT DEFAULT NULL,
+            status VARCHAR(20) NOT NULL DEFAULT 'pending',
+            operation_key VARCHAR(191) DEFAULT NULL,
+            ledger_transaction_id BIGINT UNSIGNED DEFAULT NULL,
+            created_at DATETIME NOT NULL,
+            processed_at DATETIME DEFAULT NULL,
+            note TEXT DEFAULT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_withdrawal_number (withdrawal_number),
+            UNIQUE KEY uniq_withdrawal_operation (operation_key),
+            UNIQUE KEY uniq_ledger_transaction (ledger_transaction_id),
+            KEY idx_user (user_id),
+            KEY idx_user_created (user_id, created_at),
+            KEY idx_status (status),
+            KEY idx_created (created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_withdrawal);
+
+        // ---------- 11. 举报工单 ----------
+        $sql_report = "CREATE TABLE {$prefix}aksrt_report (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            reporter_id BIGINT UNSIGNED NOT NULL,
+            target_type VARCHAR(20) NOT NULL,
+            target_id BIGINT UNSIGNED NOT NULL,
+            reason TEXT NOT NULL,
+            category VARCHAR(40) NOT NULL DEFAULT '',
+            status VARCHAR(20) NOT NULL DEFAULT 'pending',
+            created_at DATETIME NOT NULL,
+            updated_at DATETIME DEFAULT NULL,
+            notes_json TEXT DEFAULT NULL,
+            PRIMARY KEY  (id),
+            KEY idx_status (status),
+            KEY idx_target (target_type, target_id),
+            KEY idx_reporter (reporter_id),
+            KEY idx_created (created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_report);
+
+        // ---------- 12. 用户限制/封禁 ----------
+        $sql_restriction = "CREATE TABLE {$prefix}aksrt_user_restriction (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            user_id BIGINT UNSIGNED NOT NULL,
+            type VARCHAR(20) NOT NULL DEFAULT 'warn',
+            reason TEXT NOT NULL,
+            scope VARCHAR(20) NOT NULL DEFAULT 'global',
+            expires_at DATETIME DEFAULT NULL,
+            created_by BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            created_at DATETIME NOT NULL,
+            PRIMARY KEY  (id),
+            KEY idx_user (user_id),
+            KEY idx_type (type),
+            KEY idx_scope (scope),
+            KEY idx_expires (expires_at),
+            KEY idx_created (created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_restriction);
+
+        // ── follow ──
+        $sql_follow = "CREATE TABLE {$prefix}aksrt_follow (
+            id           BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            follower_id  BIGINT UNSIGNED NOT NULL,
+            following_id BIGINT UNSIGNED NOT NULL,
+            created_at   DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+            PRIMARY KEY  (id),
+            UNIQUE KEY idx_pair (follower_id, following_id),
+            KEY idx_following (following_id),
+            KEY idx_created (created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_follow);
+
+        // ── coupon ──
+        $sql_coupon = "CREATE TABLE {$prefix}aksrt_coupon (
+            id           BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            code         VARCHAR(60) NOT NULL DEFAULT '',
+            type         VARCHAR(20) NOT NULL DEFAULT 'fixed',
+            value        DECIMAL(10,2) NOT NULL DEFAULT 0,
+            min_amount   DECIMAL(10,2) NOT NULL DEFAULT 0,
+            usage_limit  INT UNSIGNED NOT NULL DEFAULT 0,
+            used_count   INT UNSIGNED NOT NULL DEFAULT 0,
+            expires_at   DATETIME DEFAULT NULL,
+            per_user_limit INT UNSIGNED NOT NULL DEFAULT 0,
+            product_scope TEXT DEFAULT NULL,
+            max_discount DECIMAL(10,2) NOT NULL DEFAULT 0,
+            status       VARCHAR(20) NOT NULL DEFAULT 'active',
+            created_at   DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+            PRIMARY KEY  (id),
+            UNIQUE KEY idx_code (code),
+            KEY idx_status (status),
+            KEY idx_expires (expires_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_coupon);
+
+        // ── coupon_usage (R68) ──
+        $sql_coupon_usage = "CREATE TABLE {$prefix}aksrt_coupon_usage (
+            id           BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            coupon_id    BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            user_id      BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            order_number VARCHAR(32) NOT NULL DEFAULT '',
+            discount     DECIMAL(10,2) NOT NULL DEFAULT 0,
+            created_at   DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+            PRIMARY KEY  (id),
+            KEY idx_coupon (coupon_id),
+            KEY idx_user (user_id),
+            UNIQUE KEY uniq_coupon_usage_order (order_number)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_coupon_usage);
+
+		// ── typed charge cards ──
+        $sql_charge_card = "CREATE TABLE {$prefix}aksrt_charge_card (
+            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            card            VARCHAR(60) NOT NULL DEFAULT '',
+            password        VARCHAR(80) NOT NULL DEFAULT '',
+            type            VARCHAR(20) NOT NULL DEFAULT 'balance',
+            amount          DECIMAL(10,2) NOT NULL DEFAULT 0,
+            balance         DECIMAL(10,2) NOT NULL DEFAULT 0,
+            status          VARCHAR(20) NOT NULL DEFAULT 'active',
+            meta            LONGTEXT DEFAULT NULL,
+            order_number    VARCHAR(32) NOT NULL DEFAULT '',
+            used_by         BIGINT UNSIGNED DEFAULT NULL,
+            used_at         DATETIME DEFAULT NULL,
+            expires_at      DATETIME DEFAULT NULL,
+            created_at      DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+            note            TEXT DEFAULT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY idx_password (password),
+            KEY idx_card (card),
+            KEY idx_type (type),
+            KEY idx_status (status),
+            KEY idx_used_by (used_by),
+            KEY idx_order_number (order_number),
+            KEY idx_expires (expires_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_charge_card);
+
+        // ── one-time invite codes (registration gate + per-batch rewards) ──
+        $sql_invite_code = "CREATE TABLE {$prefix}aksrt_invite_code (
+            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            code            VARCHAR(32) NOT NULL,
+            batch_id        VARCHAR(32) NOT NULL DEFAULT '',
+            remark          VARCHAR(191) NOT NULL DEFAULT '',
+            rewards         TEXT DEFAULT NULL,
+            max_uses        INT UNSIGNED NOT NULL DEFAULT 1,
+            used_count      INT UNSIGNED NOT NULL DEFAULT 0,
+            status          VARCHAR(20) NOT NULL DEFAULT 'active',
+            expires_at      DATETIME DEFAULT NULL,
+            created_by      BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            created_at      DATETIME NOT NULL,
+            updated_at      DATETIME NOT NULL DEFAULT '1970-01-01 00:00:00',
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_invite_code (code),
+            KEY idx_batch (batch_id),
+            KEY idx_status (status),
+            KEY idx_expires (expires_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_invite_code);
+
+        // ── invite-code usage log (who consumed which code) ──
+        $sql_invite_code_usage = "CREATE TABLE {$prefix}aksrt_invite_code_usage (
+            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            code_id         BIGINT UNSIGNED NOT NULL,
+            user_id         BIGINT UNSIGNED NOT NULL,
+            used_at         DATETIME NOT NULL,
+            PRIMARY KEY  (id),
+            UNIQUE KEY uniq_invite_usage (code_id, user_id),
+            KEY idx_usage_user (user_id),
+            KEY idx_usage_code (code_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_invite_code_usage);
+
+        // ── canonical Ref attribution and permanent user binding ──
+        $sql_affiliate_relation = "CREATE TABLE {$prefix}aksrt_affiliate_relation (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            referral_code VARCHAR(32) NOT NULL,
+            promoter_id BIGINT UNSIGNED NOT NULL,
+            invitee_id BIGINT UNSIGNED DEFAULT NULL,
+            first_touch_at DATETIME NOT NULL,
+            bound_at DATETIME DEFAULT NULL,
+            status VARCHAR(20) NOT NULL DEFAULT 'captured',
+            reward_status VARCHAR(20) NOT NULL DEFAULT 'skipped',
+            rewarded_at DATETIME DEFAULT NULL,
+            registration_ip VARCHAR(64) DEFAULT NULL,
+            created_at DATETIME NOT NULL,
+            PRIMARY KEY (id),
+            KEY idx_referral_code (referral_code),
+            UNIQUE KEY uniq_invitee (invitee_id),
+            KEY idx_promoter (promoter_id),
+            KEY idx_status_touch (status, first_touch_at),
+            KEY idx_reward_status (reward_status),
+            KEY idx_reward_ip (registration_ip, rewarded_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_affiliate_relation);
+
+        // ── immutable commission ledger ──
+        // 佣金即时入账（无冻结/结算期）：下单支付即 credit 到 COMMISSION 资金池，
+        // 本表仅作佣金明细账 + 退款冲正的溯源记录。status: credited | cancelled。
+        $sql_commission_ledger = "CREATE TABLE {$prefix}aksrt_commission_ledger (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            promoter_id BIGINT UNSIGNED NOT NULL,
+            source_user_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            order_number VARCHAR(64) NOT NULL,
+            order_type VARCHAR(32) NOT NULL,
+            eligible_base DECIMAL(18,2) NOT NULL DEFAULT 0,
+            ratio DECIMAL(8,4) NOT NULL DEFAULT 0,
+            original_amount DECIMAL(18,2) NOT NULL DEFAULT 0,
+            adjustment_total DECIMAL(18,2) NOT NULL DEFAULT 0,
+            status VARCHAR(20) NOT NULL DEFAULT 'credited',
+            idempotency_key VARCHAR(128) NOT NULL,
+			cancel_operation_key VARCHAR(191) DEFAULT NULL,
+			cancel_payload_hash CHAR(64) DEFAULT NULL,
+            created_at DATETIME NOT NULL,
+            note TEXT DEFAULT NULL,
+            PRIMARY KEY (id),
+            UNIQUE KEY uniq_commission_idempotency (idempotency_key),
+			UNIQUE KEY uniq_commission_cancel_operation (cancel_operation_key),
+            KEY idx_promoter_status (promoter_id, status),
+            KEY idx_order_type (order_number, order_type),
+            KEY idx_created (created_at)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_commission_ledger);
+
+        // 佣金欠款挂账：退款全额收回后，若佣金池不足产生的差额记为欠款，
+        // 后续新增佣金先抵扣欠款再入池。每用户一行。
+        $sql_commission_debt = "CREATE TABLE {$prefix}aksrt_commission_debt (
+            user_id BIGINT UNSIGNED NOT NULL,
+            debt_minor BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            updated_at DATETIME NOT NULL,
+            PRIMARY KEY (user_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_commission_debt);
+
+        // ── immutable commission adjustments (refund/debt/manual) ──
+        $sql_commission_adjustment = "CREATE TABLE {$prefix}aksrt_commission_adjustment (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            ledger_id BIGINT UNSIGNED NOT NULL,
+            promoter_id BIGINT UNSIGNED NOT NULL,
+            amount DECIMAL(18,2) NOT NULL DEFAULT 0,
+            reason VARCHAR(32) NOT NULL,
+            source_key VARCHAR(128) NOT NULL,
+            operator_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            created_at DATETIME NOT NULL,
+            note TEXT DEFAULT NULL,
+            PRIMARY KEY (id),
+            UNIQUE KEY uniq_adjustment_source (source_key),
+            KEY idx_ledger (ledger_id),
+            KEY idx_promoter (promoter_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_commission_adjustment);
+
+        // ── payout account snapshots ──
+        $sql_payout_account = "CREATE TABLE {$prefix}aksrt_payout_account (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            user_id BIGINT UNSIGNED NOT NULL,
+            channel VARCHAR(20) NOT NULL,
+            attachment_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            account_hash CHAR(64) NOT NULL DEFAULT '',
+            status VARCHAR(20) NOT NULL DEFAULT 'active',
+            created_at DATETIME NOT NULL,
+            updated_at DATETIME NOT NULL,
+            PRIMARY KEY (id),
+            UNIQUE KEY uniq_user_channel (user_id, channel),
+            KEY idx_user_status (user_id, status)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_payout_account);
+
+        // ── order_items (§6.5 多商品多商家) ──
+        $sql_order_items = "CREATE TABLE {$prefix}aksrt_order_item (
+            id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            order_number    VARCHAR(32) NOT NULL DEFAULT '',
+            product_id      BIGINT UNSIGNED NOT NULL DEFAULT 0,
+            product_title   VARCHAR(255) NOT NULL DEFAULT '',
+            options_key     VARCHAR(255) NOT NULL DEFAULT '',
+            options_label   VARCHAR(255) NOT NULL DEFAULT '',
+            quantity        INT UNSIGNED NOT NULL DEFAULT 1,
+            unit_price      DECIMAL(10,2) NOT NULL DEFAULT 0,
+            total_price     DECIMAL(10,2) NOT NULL DEFAULT 0,
+            discount_amount DECIMAL(10,2) NOT NULL DEFAULT 0,
+            shipping_fee    DECIMAL(10,2) NOT NULL DEFAULT 0,
+            pay_price       DECIMAL(10,2) NOT NULL DEFAULT 0,
+            shipping_type   VARCHAR(20) NOT NULL DEFAULT 'express',
+            auto_delivery_content TEXT DEFAULT NULL,
+            discount_hit    TEXT DEFAULT NULL,
+            gift_data       TEXT DEFAULT NULL,
+            image           VARCHAR(512) NOT NULL DEFAULT '',
+            PRIMARY KEY  (id),
+            KEY idx_order (order_number),
+            KEY idx_product (product_id)
+        ) ENGINE=InnoDB {$charset_collate};";
+        dbDelta($sql_order_items);
+
+        self::migrate_identity_tables($prefix, $charset_collate);
+        self::migrate_vip_tables($prefix, $charset_collate);
+    }
+}