init

_docs/sql/003_biz_audit.sql

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+-- 审计日志（关键操作留痕）
+SET NAMES utf8mb4;
+
+CREATE TABLE IF NOT EXISTS `biz_audit_log` (
+  `id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `admin_user_id` BIGINT UNSIGNED NULL DEFAULT NULL COMMENT '后台操作者 sys_user.id，可空',
+  `biz_user_id` BIGINT UNSIGNED NULL DEFAULT NULL COMMENT '相关业务用户',
+  `action` VARCHAR(64) NOT NULL COMMENT '动作标识',
+  `resource_type` VARCHAR(64) NOT NULL DEFAULT '',
+  `resource_id` BIGINT UNSIGNED NULL DEFAULT NULL,
+  `detail` JSON NULL,
+  `created_at` DATETIME NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `idx_biz_audit_action` (`action`),
+  KEY `idx_biz_audit_created` (`created_at`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='订阅模块审计';