diff --git a/backend/migrations/000001_init.sql b/backend/migrations/000001_init.sql
index f109334..b4eb044 100644
--- a/backend/migrations/000001_init.sql
+++ b/backend/migrations/000001_init.sql
@@ -1,6 +1,7 @@
 -- ============================================
--- 数据库初始化脚本
--- 包含所有表结构和基础数据
+-- 数据库初始化脚本 (合并版本)
+-- 包含所有表结构、索引和基础数据
+-- 创建时间: 2026-06-05
 -- ============================================
 
 SET NAMES utf8mb4;
@@ -10,105 +11,112 @@ SET FOREIGN_KEY_CHECKS = 0;
 -- 用户相关表
 -- -------------------------------------------
 
+-- 用户主表：存储用户基本信息、实名状态、风控状态等
 CREATE TABLE IF NOT EXISTS users (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  phone VARCHAR(32) NOT NULL,
-  nickname VARCHAR(64) NOT NULL DEFAULT '',
-  avatar_url VARCHAR(512) NOT NULL DEFAULT '',
-  realname_status VARCHAR(32) NOT NULL DEFAULT 'unverified',
-  risk_status VARCHAR(32) NOT NULL DEFAULT 'normal',
-  credit_score INT NOT NULL DEFAULT 100,
-  status VARCHAR(32) NOT NULL DEFAULT 'active',
-  last_login_at DATETIME NULL,
+  phone VARCHAR(32) NOT NULL COMMENT '手机号',
+  nickname VARCHAR(64) NOT NULL DEFAULT '' COMMENT '昵称',
+  avatar_url VARCHAR(512) NOT NULL DEFAULT '' COMMENT '头像URL',
+  realname_status VARCHAR(32) NOT NULL DEFAULT 'unverified' COMMENT '实名状态: unverified未实名, pending审核中, verified已实名, failed失败',
+  risk_status VARCHAR(32) NOT NULL DEFAULT 'normal' COMMENT '风控状态: normal正常, warning警告, frozen冻结',
+  credit_score INT NOT NULL DEFAULT 100 COMMENT '信用分',
+  status VARCHAR(32) NOT NULL DEFAULT 'active' COMMENT '账号状态: active活跃, inactive停用, banned封禁',
+  last_login_at DATETIME NULL COMMENT '最后登录时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  UNIQUE KEY uk_users_phone (phone)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+  UNIQUE KEY uk_users_phone (phone),
+  KEY idx_users_realname_status (realname_status, status)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户表';
 
+-- 用户实名认证记录表
 CREATE TABLE IF NOT EXISTS user_realname (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  user_id BIGINT UNSIGNED NOT NULL,
-  provider VARCHAR(32) NOT NULL,
-  provider_order_no VARCHAR(128) NOT NULL DEFAULT '',
-  status VARCHAR(32) NOT NULL DEFAULT 'pending',
-  masked_name VARCHAR(64) NOT NULL DEFAULT '',
-  masked_id_no VARCHAR(64) NOT NULL DEFAULT '',
-  verified_at DATETIME NULL,
-  fail_reason VARCHAR(255) NOT NULL DEFAULT '',
+  user_id BIGINT UNSIGNED NOT NULL COMMENT '用户ID',
+  provider VARCHAR(32) NOT NULL COMMENT '认证服务商',
+  provider_order_no VARCHAR(128) NOT NULL DEFAULT '' COMMENT '服务商订单号',
+  status VARCHAR(32) NOT NULL DEFAULT 'pending' COMMENT '认证状态: pending待处理, success成功, failed失败',
+  masked_name VARCHAR(64) NOT NULL DEFAULT '' COMMENT '脱敏姓名',
+  masked_id_no VARCHAR(64) NOT NULL DEFAULT '' COMMENT '脱敏身份证号',
+  verified_at DATETIME NULL COMMENT '认证通过时间',
+  fail_reason VARCHAR(255) NOT NULL DEFAULT '' COMMENT '失败原因',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_user_realname_user_id (user_id),
   KEY idx_user_realname_provider_order_no (provider_order_no)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户实名认证记录';
 
 -- -------------------------------------------
 -- 游戏账号和商品表
 -- -------------------------------------------
 
+-- 游戏账号表：存储用户的游戏账号信息
 CREATE TABLE IF NOT EXISTS game_accounts (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  owner_id BIGINT UNSIGNED NOT NULL,
-  game_name VARCHAR(64) NOT NULL DEFAULT 'delta_force',
-  server_region VARCHAR(64) NOT NULL,
-  login_platform VARCHAR(64) NOT NULL,
-  title VARCHAR(128) NOT NULL,
-  description TEXT NULL,
-  rank_level VARCHAR(64) NOT NULL DEFAULT '',
-  haf_coin_amount BIGINT NOT NULL DEFAULT 0,
-  asset_summary JSON NULL,
-  season_tags JSON NULL,
-  screenshot_urls JSON NULL,
-  status VARCHAR(32) NOT NULL DEFAULT 'draft',
+  owner_id BIGINT UNSIGNED NOT NULL COMMENT '账号所有者ID',
+  game_name VARCHAR(64) NOT NULL DEFAULT 'delta_force' COMMENT '游戏名称',
+  server_region VARCHAR(64) NOT NULL COMMENT '服务器区域',
+  login_platform VARCHAR(64) NOT NULL COMMENT '登录平台: steam/epic/wegame等',
+  title VARCHAR(128) NOT NULL COMMENT '账号标题',
+  description TEXT NULL COMMENT '账号描述',
+  rank_level VARCHAR(64) NOT NULL DEFAULT '' COMMENT '段位等级',
+  haf_coin_amount BIGINT NOT NULL DEFAULT 0 COMMENT 'HAF币数量',
+  asset_summary JSON NULL COMMENT '资产摘要(JSON格式)',
+  season_tags JSON NULL COMMENT '赛季标签(JSON数组)',
+  screenshot_urls JSON NULL COMMENT '截图URL列表(JSON数组)',
+  status VARCHAR(32) NOT NULL DEFAULT 'draft' COMMENT '状态: draft草稿, active使用中, deleted已删除',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   KEY idx_game_accounts_owner_id (owner_id),
   KEY idx_game_accounts_filter (game_name, server_region, login_platform)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='游戏账号表';
 
+-- 租号商品列表：用户发布的出租商品
 CREATE TABLE IF NOT EXISTS rental_listings (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  account_id BIGINT UNSIGNED NOT NULL,
-  owner_id BIGINT UNSIGNED NOT NULL,
-  price DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  deposit_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  in_transaction TINYINT(1) NOT NULL DEFAULT 0,
-  status VARCHAR(32) NOT NULL DEFAULT 'draft',
-  review_status VARCHAR(32) NOT NULL DEFAULT 'none',
-  review_reason VARCHAR(255) NOT NULL DEFAULT '',
-  published_at DATETIME NULL,
+  account_id BIGINT UNSIGNED NOT NULL COMMENT '关联的游戏账号ID',
+  owner_id BIGINT UNSIGNED NOT NULL COMMENT '号主ID',
+  price DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '租金(元/小时)',
+  deposit_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '押金金额',
+  in_transaction TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否正在交易中: 0否, 1是',
+  status VARCHAR(32) NOT NULL DEFAULT 'draft' COMMENT '商品状态: draft草稿, active上架, offline下架, deleted删除',
+  review_status VARCHAR(32) NOT NULL DEFAULT 'none' COMMENT '审核状态: none无需审核, pending待审核, approved通过, rejected拒绝',
+  review_reason VARCHAR(255) NOT NULL DEFAULT '' COMMENT '审核拒绝原因',
+  published_at DATETIME NULL COMMENT '发布时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   KEY idx_rental_listings_account_id (account_id),
   KEY idx_rental_listings_owner_id (owner_id),
-  KEY idx_rental_listings_filter (status, review_status, in_transaction, price)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+  KEY idx_rental_listings_filter (status, review_status, in_transaction, price),
+  KEY idx_rental_listings_published (status, review_status, published_at DESC)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='租号商品列表';
 
 -- -------------------------------------------
 -- 订单相关表
 -- -------------------------------------------
 
+-- 租号订单表：核心订单信息
 CREATE TABLE IF NOT EXISTS rental_orders (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  order_no VARCHAR(64) NOT NULL,
-  listing_id BIGINT UNSIGNED NOT NULL,
-  account_id BIGINT UNSIGNED NOT NULL,
-  owner_id BIGINT UNSIGNED NOT NULL,
-  renter_id BIGINT UNSIGNED NOT NULL,
-  rented_at DATETIME NULL,
-  estimated_duration_hours INT NOT NULL DEFAULT 24,
-  rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  owner_rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  deposit_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  platform_fee DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  account_snapshot JSON NULL,
-  status VARCHAR(32) NOT NULL DEFAULT 'pending_payment',
-  handoff_status VARCHAR(32) NOT NULL DEFAULT 'none',
-  settlement_status VARCHAR(32) NOT NULL DEFAULT 'unsettled',
-  refund_status VARCHAR(32) NOT NULL DEFAULT 'none',
-  refund_amount_cent BIGINT NOT NULL DEFAULT 0,
-  refunded_at DATETIME NULL,
-  owner_settled_at DATETIME NULL,
-  settled_at DATETIME NULL,
+  order_no VARCHAR(64) NOT NULL COMMENT '订单号',
+  listing_id BIGINT UNSIGNED NOT NULL COMMENT '商品ID',
+  account_id BIGINT UNSIGNED NOT NULL COMMENT '游戏账号ID',
+  owner_id BIGINT UNSIGNED NOT NULL COMMENT '号主ID',
+  renter_id BIGINT UNSIGNED NOT NULL COMMENT '租客ID',
+  rented_at DATETIME NULL COMMENT '租用开始时间',
+  estimated_duration_hours INT NOT NULL DEFAULT 24 COMMENT '预计租用时长(小时)',
+  rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '租金总额',
+  owner_rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '号主实得租金',
+  deposit_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '押金金额',
+  platform_fee DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '平台手续费',
+  account_snapshot JSON NULL COMMENT '账号快照(下单时的账号状态)',
+  status VARCHAR(32) NOT NULL DEFAULT 'pending_payment' COMMENT '订单状态: pending_payment待支付, active进行中, completed已完成, cancelled已取消, closed已关闭',
+  handoff_status VARCHAR(32) NOT NULL DEFAULT 'none' COMMENT '交接状态: none未开始, owner_delivered号主已交, renter_confirmed租客已确认, renter_returned租客已还, owner_received号主已收',
+  settlement_status VARCHAR(32) NOT NULL DEFAULT 'unsettled' COMMENT '结算状态: unsettled未结算, owner_settled号主已结算, settled完全结算',
+  refund_status VARCHAR(32) NOT NULL DEFAULT 'none' COMMENT '退款状态: none无退款, pending待退款, processing退款中, success退款成功, failed退款失败',
+  refund_amount_cent BIGINT NOT NULL DEFAULT 0 COMMENT '退款金额(分)',
+  refunded_at DATETIME NULL COMMENT '退款完成时间',
+  owner_settled_at DATETIME NULL COMMENT '号主结算时间',
+  settled_at DATETIME NULL COMMENT '订单结算时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_rental_orders_order_no (order_no),
@@ -116,110 +124,118 @@ CREATE TABLE IF NOT EXISTS rental_orders (
   KEY idx_rental_orders_owner_status (owner_id, status),
   KEY idx_rental_orders_listing_id (listing_id),
   KEY idx_rental_orders_refund_status (refund_status),
-  KEY idx_rental_orders_rented_at (status, rented_at)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+  KEY idx_rental_orders_rented_at (status, rented_at),
+  KEY idx_rental_orders_status_created_at (status, created_at DESC),
+  KEY idx_rental_orders_settlement (settlement_status, owner_id, created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='租号订单表';
 
+-- 订单结算记录表：记录租用完成后的结算信息
 CREATE TABLE IF NOT EXISTS order_checkouts (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  order_id BIGINT UNSIGNED NOT NULL,
-  initiated_by BIGINT UNSIGNED NOT NULL,
-  status VARCHAR(32) NOT NULL DEFAULT 'submitted',
-  rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  owner_rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  platform_fee DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  deposit_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  consumable_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  coin_consumed_m DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  other_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  deposit_deduct_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  renter_refund_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  owner_income_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  content TEXT NULL,
-  evidence_urls JSON NULL,
-  owner_adjustment_reason TEXT NULL,
-  owner_adjusted_at DATETIME NULL,
-  renter_confirmed_at DATETIME NULL,
-  renter_rejected_at DATETIME NULL,
+  order_id BIGINT UNSIGNED NOT NULL COMMENT '订单ID',
+  initiated_by BIGINT UNSIGNED NOT NULL COMMENT '发起者ID',
+  status VARCHAR(32) NOT NULL DEFAULT 'submitted' COMMENT '结算状态: submitted已提交, renter_confirmed租客确认, renter_rejected租客拒绝, completed完成',
+  rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '租金',
+  owner_rent_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '号主实得租金',
+  platform_fee DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '平台手续费',
+  deposit_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '押金',
+  consumable_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '消耗品扣费',
+  coin_consumed_m DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '游戏币消耗(百万为单位)',
+  other_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '其他费用',
+  deposit_deduct_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '押金扣除金额',
+  renter_refund_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '租客退款金额',
+  owner_income_amount DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '号主收入金额',
+  content TEXT NULL COMMENT '结算说明',
+  evidence_urls JSON NULL COMMENT '证据截图URL列表',
+  owner_adjustment_reason TEXT NULL COMMENT '号主调整原因',
+  owner_adjusted_at DATETIME NULL COMMENT '号主调整时间',
+  renter_confirmed_at DATETIME NULL COMMENT '租客确认时间',
+  renter_rejected_at DATETIME NULL COMMENT '租客拒绝时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   KEY idx_order_checkouts_order_id (order_id),
   KEY idx_order_checkouts_status (status)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='订单结算记录表';
 
+-- 账号交接记录表：记录号主和租客之间的账号交接
 CREATE TABLE IF NOT EXISTS handoff_records (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  order_id BIGINT UNSIGNED NOT NULL,
-  from_user_id BIGINT UNSIGNED NOT NULL,
-  to_user_id BIGINT UNSIGNED NOT NULL,
-  type VARCHAR(32) NOT NULL,
-  content TEXT NULL,
-  attachment_urls JSON NULL,
-  confirmed_by_renter_at DATETIME NULL,
-  confirmed_by_owner_at DATETIME NULL,
+  order_id BIGINT UNSIGNED NOT NULL COMMENT '订单ID',
+  from_user_id BIGINT UNSIGNED NOT NULL COMMENT '交出方用户ID',
+  to_user_id BIGINT UNSIGNED NOT NULL COMMENT '接收方用户ID',
+  type VARCHAR(32) NOT NULL COMMENT '交接类型: deliver交付, return归还',
+  content TEXT NULL COMMENT '交接内容(账号密码等)',
+  attachment_urls JSON NULL COMMENT '附件URL列表',
+  confirmed_by_renter_at DATETIME NULL COMMENT '租客确认时间',
+  confirmed_by_owner_at DATETIME NULL COMMENT '号主确认时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   KEY idx_handoff_records_order_id (order_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='账号交接记录表';
 
 -- -------------------------------------------
 -- 钱包相关表
 -- -------------------------------------------
 
+-- 钱包账户表：用户的虚拟钱包
 CREATE TABLE IF NOT EXISTS wallet_accounts (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  user_id BIGINT UNSIGNED NOT NULL,
-  available_balance DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  frozen_balance DECIMAL(12,2) NOT NULL DEFAULT 0.00,
-  status VARCHAR(32) NOT NULL DEFAULT 'active',
+  user_id BIGINT UNSIGNED NOT NULL COMMENT '用户ID',
+  available_balance DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '可用余额',
+  frozen_balance DECIMAL(12,2) NOT NULL DEFAULT 0.00 COMMENT '冻结余额',
+  status VARCHAR(32) NOT NULL DEFAULT 'active' COMMENT '钱包状态: active正常, frozen冻结, closed关闭',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_wallet_accounts_user_id (user_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='钱包账户表';
 
+-- 钱包流水表：记录所有的资金变动
 CREATE TABLE IF NOT EXISTS wallet_ledger (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  ledger_no VARCHAR(64) NOT NULL,
-  user_id BIGINT UNSIGNED NOT NULL,
-  order_id BIGINT UNSIGNED NULL,
-  direction VARCHAR(16) NOT NULL,
-  amount DECIMAL(12,2) NOT NULL,
-  balance_after DECIMAL(12,2) NOT NULL,
-  balance_type VARCHAR(32) NOT NULL,
-  biz_type VARCHAR(32) NOT NULL,
-  biz_no VARCHAR(64) NOT NULL,
-  remark VARCHAR(255) NOT NULL DEFAULT '',
+  ledger_no VARCHAR(64) NOT NULL COMMENT '流水号',
+  user_id BIGINT UNSIGNED NOT NULL COMMENT '用户ID',
+  order_id BIGINT UNSIGNED NULL COMMENT '关联订单ID',
+  direction VARCHAR(16) NOT NULL COMMENT '方向: in收入, out支出',
+  amount DECIMAL(12,2) NOT NULL COMMENT '金额',
+  balance_after DECIMAL(12,2) NOT NULL COMMENT '变动后余额',
+  balance_type VARCHAR(32) NOT NULL COMMENT '余额类型: available可用, frozen冻结',
+  biz_type VARCHAR(32) NOT NULL COMMENT '业务类型: rent_payment租金支付, deposit_freeze押金冻结, settlement结算, refund退款等',
+  biz_no VARCHAR(64) NOT NULL COMMENT '业务单号',
+  remark VARCHAR(255) NOT NULL DEFAULT '' COMMENT '备注',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   UNIQUE KEY uk_wallet_ledger_ledger_no (ledger_no),
   KEY idx_wallet_ledger_user_created (user_id, created_at),
   KEY idx_wallet_ledger_order_id (order_id),
-  KEY idx_wallet_ledger_biz (biz_type, biz_no)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+  KEY idx_wallet_ledger_biz (biz_type, biz_no),
+  KEY idx_wallet_ledger_user_biz_created (user_id, biz_type, created_at DESC)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='钱包流水表';
 
 -- -------------------------------------------
--- 支付渠道订单
+-- 支付渠道订单表
 -- -------------------------------------------
 
+-- 支付订单表：对接第三方支付的订单记录
 CREATE TABLE IF NOT EXISTS payment_orders (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  payment_no VARCHAR(64) NOT NULL,
-  order_id BIGINT UNSIGNED NOT NULL,
-  order_no VARCHAR(64) NOT NULL,
-  user_id BIGINT UNSIGNED NOT NULL,
-  provider VARCHAR(32) NOT NULL,
-  merchant_id VARCHAR(32) NOT NULL DEFAULT '',
-  third_order_id VARCHAR(64) NOT NULL,
-  provider_order_id VARCHAR(64) NOT NULL DEFAULT '',
-  pay_way VARCHAR(16) NOT NULL DEFAULT '',
-  jspay_flag VARCHAR(8) NOT NULL DEFAULT '',
-  amount_cent BIGINT NOT NULL DEFAULT 0,
-  biz_type VARCHAR(32) NOT NULL DEFAULT 'order_pay',
-  status VARCHAR(32) NOT NULL DEFAULT 'created',
-  td_code VARCHAR(512) NOT NULL DEFAULT '',
-  jspay_url VARCHAR(512) NOT NULL DEFAULT '',
-  jspay_info TEXT NULL,
-  raw_request JSON NULL,
-  raw_response JSON NULL,
-  paid_at DATETIME NULL,
-  notified_at DATETIME NULL,
+  payment_no VARCHAR(64) NOT NULL COMMENT '支付单号',
+  order_id BIGINT UNSIGNED NOT NULL COMMENT '关联订单ID',
+  order_no VARCHAR(64) NOT NULL COMMENT '业务订单号',
+  user_id BIGINT UNSIGNED NOT NULL COMMENT '支付用户ID',
+  provider VARCHAR(32) NOT NULL COMMENT '支付服务商: alipay支付宝, wechat微信, mock模拟',
+  merchant_id VARCHAR(32) NOT NULL DEFAULT '' COMMENT '商户号',
+  third_order_id VARCHAR(64) NOT NULL COMMENT '第三方订单ID',
+  provider_order_id VARCHAR(64) NOT NULL DEFAULT '' COMMENT '支付渠道订单号',
+  pay_way VARCHAR(16) NOT NULL DEFAULT '' COMMENT '支付方式',
+  jspay_flag VARCHAR(8) NOT NULL DEFAULT '' COMMENT 'JS支付标识',
+  amount_cent BIGINT NOT NULL DEFAULT 0 COMMENT '支付金额(分)',
+  biz_type VARCHAR(32) NOT NULL DEFAULT 'order_pay' COMMENT '业务类型: order_pay订单支付, wallet_recharge钱包充值',
+  status VARCHAR(32) NOT NULL DEFAULT 'created' COMMENT '支付状态: created已创建, pending待支付, paid已支付, failed失败, cancelled取消',
+  td_code VARCHAR(512) NOT NULL DEFAULT '' COMMENT '交易码',
+  jspay_url VARCHAR(512) NOT NULL DEFAULT '' COMMENT 'JS支付URL',
+  jspay_info TEXT NULL COMMENT 'JS支付信息',
+  raw_request JSON NULL COMMENT '原始请求(JSON)',
+  raw_response JSON NULL COMMENT '原始响应(JSON)',
+  paid_at DATETIME NULL COMMENT '支付完成时间',
+  notified_at DATETIME NULL COMMENT '通知回调时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_payment_orders_payment_no (payment_no),
@@ -230,215 +246,254 @@ CREATE TABLE IF NOT EXISTS payment_orders (
   KEY idx_payment_orders_provider_order_id (provider_order_id),
   KEY idx_payment_orders_biz_type (biz_type),
   KEY idx_payment_orders_status (status)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='支付订单表';
 
 -- -------------------------------------------
 -- 纠纷和通知表
 -- -------------------------------------------
 
+-- 纠纷表：记录用户之间的交易纠纷
 CREATE TABLE IF NOT EXISTS disputes (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  order_id BIGINT UNSIGNED NOT NULL,
-  initiator_id BIGINT UNSIGNED NOT NULL,
-  target_user_id BIGINT UNSIGNED NOT NULL,
-  type VARCHAR(32) NOT NULL,
-  status VARCHAR(32) NOT NULL DEFAULT 'open',
-  description TEXT NULL,
-  evidence_urls JSON NULL,
-  arbitration_result VARCHAR(32) NOT NULL DEFAULT '',
-  arbitration_remark TEXT NULL,
-  handled_by BIGINT UNSIGNED NULL,
-  handled_at DATETIME NULL,
+  order_id BIGINT UNSIGNED NOT NULL COMMENT '订单ID',
+  initiator_id BIGINT UNSIGNED NOT NULL COMMENT '发起人ID',
+  target_user_id BIGINT UNSIGNED NOT NULL COMMENT '被投诉人ID',
+  type VARCHAR(32) NOT NULL COMMENT '纠纷类型: account_issue账号问题, payment_issue支付问题, behavior违规行为等',
+  status VARCHAR(32) NOT NULL DEFAULT 'open' COMMENT '状态: open待处理, investigating调查中, resolved已解决, closed已关闭',
+  description TEXT NULL COMMENT '纠纷描述',
+  evidence_urls JSON NULL COMMENT '证据截图URL列表',
+  arbitration_result VARCHAR(32) NOT NULL DEFAULT '' COMMENT '仲裁结果: owner_win号主胜, renter_win租客胜, draw平局',
+  arbitration_remark TEXT NULL COMMENT '仲裁说明',
+  handled_by BIGINT UNSIGNED NULL COMMENT '处理人ID(管理员)',
+  handled_at DATETIME NULL COMMENT '处理时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   KEY idx_disputes_order_id (order_id),
   KEY idx_disputes_status (status)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='纠纷表';
 
+-- 通知消息表：系统通知、订单通知等
 CREATE TABLE IF NOT EXISTS notifications (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  user_id BIGINT UNSIGNED NOT NULL,
-  type VARCHAR(32) NOT NULL,
-  title VARCHAR(128) NOT NULL,
-  content TEXT NULL,
-  biz_type VARCHAR(32) NOT NULL DEFAULT '',
-  biz_id BIGINT UNSIGNED NULL,
-  read_at DATETIME NULL,
+  user_id BIGINT UNSIGNED NOT NULL COMMENT '接收用户ID',
+  type VARCHAR(32) NOT NULL COMMENT '通知类型: system系统, order订单, chat聊天, wallet钱包',
+  title VARCHAR(128) NOT NULL COMMENT '通知标题',
+  content TEXT NULL COMMENT '通知内容',
+  biz_type VARCHAR(32) NOT NULL DEFAULT '' COMMENT '业务类型',
+  biz_id BIGINT UNSIGNED NULL COMMENT '业务ID',
+  read_at DATETIME NULL COMMENT '已读时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   KEY idx_notifications_user_read_created (user_id, read_at, created_at)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='通知消息表';
 
+-- 审计日志表：记录重要操作的审计日志
 CREATE TABLE IF NOT EXISTS audit_logs (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  actor_type VARCHAR(32) NOT NULL,
-  actor_id BIGINT UNSIGNED NOT NULL,
-  action VARCHAR(64) NOT NULL,
-  biz_type VARCHAR(32) NOT NULL,
-  biz_id BIGINT UNSIGNED NULL,
-  ip VARCHAR(64) NOT NULL DEFAULT '',
-  user_agent VARCHAR(512) NOT NULL DEFAULT '',
-  detail JSON NULL,
+  actor_type VARCHAR(32) NOT NULL COMMENT '操作者类型: user用户, admin管理员, system系统',
+  actor_id BIGINT UNSIGNED NOT NULL COMMENT '操作者ID',
+  action VARCHAR(64) NOT NULL COMMENT '操作动作',
+  biz_type VARCHAR(32) NOT NULL COMMENT '业务类型',
+  biz_id BIGINT UNSIGNED NULL COMMENT '业务ID',
+  ip VARCHAR(64) NOT NULL DEFAULT '' COMMENT 'IP地址',
+  user_agent VARCHAR(512) NOT NULL DEFAULT '' COMMENT 'User-Agent',
+  detail JSON NULL COMMENT '详细信息(JSON)',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   KEY idx_audit_logs_actor_created (actor_id, created_at),
   KEY idx_audit_logs_biz (biz_type, biz_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='审计日志表';
 
 -- -------------------------------------------
 -- 管理员和权限表
 -- -------------------------------------------
 
+-- 管理员表
 CREATE TABLE IF NOT EXISTS admin_users (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  username VARCHAR(64) NOT NULL,
-  password_hash VARCHAR(255) NOT NULL,
-  nickname VARCHAR(64) NOT NULL DEFAULT '',
-  status VARCHAR(32) NOT NULL DEFAULT 'active',
-  last_login_at DATETIME NULL,
+  username VARCHAR(64) NOT NULL COMMENT '用户名',
+  password_hash VARCHAR(255) NOT NULL COMMENT '密码哈希',
+  nickname VARCHAR(64) NOT NULL DEFAULT '' COMMENT '昵称',
+  status VARCHAR(32) NOT NULL DEFAULT 'active' COMMENT '状态: active正常, inactive停用',
+  support_status VARCHAR(16) NOT NULL DEFAULT 'offline' COMMENT '客服状态: online在线, offline离线, busy忙碌',
+  last_login_at DATETIME NULL COMMENT '最后登录时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  UNIQUE KEY uk_admin_users_username (username)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+  UNIQUE KEY uk_admin_users_username (username),
+  KEY idx_admin_users_support_status (support_status)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='管理员表';
 
+-- 角色表
 CREATE TABLE IF NOT EXISTS roles (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  code VARCHAR(64) NOT NULL,
-  name VARCHAR(64) NOT NULL,
-  description VARCHAR(255) NOT NULL DEFAULT '',
+  code VARCHAR(64) NOT NULL COMMENT '角色代码',
+  name VARCHAR(64) NOT NULL COMMENT '角色名称',
+  description VARCHAR(255) NOT NULL DEFAULT '' COMMENT '角色描述',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_roles_code (code)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='角色表';
 
+-- 权限表
 CREATE TABLE IF NOT EXISTS permissions (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  code VARCHAR(128) NOT NULL,
-  name VARCHAR(64) NOT NULL,
-  resource VARCHAR(128) NOT NULL,
-  action VARCHAR(64) NOT NULL,
+  code VARCHAR(128) NOT NULL COMMENT '权限代码',
+  name VARCHAR(64) NOT NULL COMMENT '权限名称',
+  resource VARCHAR(128) NOT NULL COMMENT '资源',
+  action VARCHAR(64) NOT NULL COMMENT '操作',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_permissions_code (code)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='权限表';
 
+-- 管理员角色关联表
 CREATE TABLE IF NOT EXISTS admin_user_roles (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  admin_user_id BIGINT UNSIGNED NOT NULL,
-  role_id BIGINT UNSIGNED NOT NULL,
+  admin_user_id BIGINT UNSIGNED NOT NULL COMMENT '管理员ID',
+  role_id BIGINT UNSIGNED NOT NULL COMMENT '角色ID',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   UNIQUE KEY uk_admin_user_roles_user_role (admin_user_id, role_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='管理员角色关联表';
 
+-- 角色权限关联表
 CREATE TABLE IF NOT EXISTS role_permissions (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  role_id BIGINT UNSIGNED NOT NULL,
-  permission_id BIGINT UNSIGNED NOT NULL,
+  role_id BIGINT UNSIGNED NOT NULL COMMENT '角色ID',
+  permission_id BIGINT UNSIGNED NOT NULL COMMENT '权限ID',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   UNIQUE KEY uk_role_permissions_role_permission (role_id, permission_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='角色权限关联表';
 
 -- -------------------------------------------
 -- 系统配置表
 -- -------------------------------------------
 
+-- 系统配置表：存储系统级配置项
 CREATE TABLE IF NOT EXISTS system_configs (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  `key` VARCHAR(128) NOT NULL,
-  `value` TEXT NOT NULL,
-  description VARCHAR(255) NOT NULL DEFAULT '',
-  updated_by BIGINT UNSIGNED NULL,
+  `key` VARCHAR(128) NOT NULL COMMENT '配置键',
+  `value` TEXT NOT NULL COMMENT '配置值',
+  description VARCHAR(255) NOT NULL DEFAULT '' COMMENT '配置说明',
+  updated_by BIGINT UNSIGNED NULL COMMENT '更新者ID',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_system_configs_key (`key`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='系统配置表';
 
 -- -------------------------------------------
 -- 客服聊天表
 -- -------------------------------------------
 
+-- 聊天会话表：订单群聊等
 CREATE TABLE IF NOT EXISTS chat_conversations (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  order_id BIGINT UNSIGNED NULL,
-  type VARCHAR(32) NOT NULL DEFAULT 'order_group',
-  title VARCHAR(128) NOT NULL,
-  status VARCHAR(32) NOT NULL DEFAULT 'active',
-  last_message_id BIGINT UNSIGNED NULL,
-  last_message_preview VARCHAR(255) NOT NULL DEFAULT '',
-  last_message_at DATETIME NULL,
+  order_id BIGINT UNSIGNED NULL COMMENT '关联订单ID',
+  type VARCHAR(32) NOT NULL DEFAULT 'order_group' COMMENT '会话类型: order_group订单群聊, support_chat客服咨询',
+  title VARCHAR(128) NOT NULL COMMENT '会话标题',
+  status VARCHAR(32) NOT NULL DEFAULT 'active' COMMENT '状态: active活跃, archived已归档, closed已关闭',
+  last_message_id BIGINT UNSIGNED NULL COMMENT '最后一条消息ID',
+  last_message_preview VARCHAR(255) NOT NULL DEFAULT '' COMMENT '最后消息预览',
+  last_message_at DATETIME NULL COMMENT '最后消息时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_chat_conversations_order_id (order_id),
   KEY idx_chat_conversations_last_message_at (last_message_at)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='聊天会话表';
 
+-- 聊天参与者表：会话成员
 CREATE TABLE IF NOT EXISTS chat_participants (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  conversation_id BIGINT UNSIGNED NOT NULL,
-  participant_type VARCHAR(16) NOT NULL,
-  participant_id BIGINT UNSIGNED NOT NULL,
-  role VARCHAR(32) NOT NULL,
-  remark VARCHAR(128) NOT NULL DEFAULT '',
-  last_read_at DATETIME NULL,
-  joined_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  conversation_id BIGINT UNSIGNED NOT NULL COMMENT '会话ID',
+  participant_type VARCHAR(16) NOT NULL COMMENT '参与者类型: user用户, admin管理员',
+  participant_id BIGINT UNSIGNED NOT NULL COMMENT '参与者ID',
+  role VARCHAR(32) NOT NULL COMMENT '角色: owner号主, renter租客, support客服',
+  remark VARCHAR(128) NOT NULL DEFAULT '' COMMENT '备注名',
+  last_read_at DATETIME NULL COMMENT '最后已读时间',
+  joined_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '加入时间',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   UNIQUE KEY uk_chat_participants_member (conversation_id, participant_type, participant_id),
   KEY idx_chat_participants_participant (participant_type, participant_id),
   KEY idx_chat_participants_conversation (conversation_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='聊天参与者表';
 
+-- 聊天消息表：所有聊天消息
 CREATE TABLE IF NOT EXISTS chat_messages (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  conversation_id BIGINT UNSIGNED NOT NULL,
-  sender_type VARCHAR(16) NOT NULL,
-  sender_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
-  sender_role VARCHAR(32) NOT NULL DEFAULT '',
-  content_type VARCHAR(32) NOT NULL DEFAULT 'text',
-  content TEXT NULL,
-  attachment_urls JSON NULL,
+  conversation_id BIGINT UNSIGNED NOT NULL COMMENT '会话ID',
+  sender_type VARCHAR(16) NOT NULL COMMENT '发送者类型: user用户, admin管理员, system系统',
+  sender_id BIGINT UNSIGNED NOT NULL DEFAULT 0 COMMENT '发送者ID',
+  sender_role VARCHAR(32) NOT NULL DEFAULT '' COMMENT '发送者角色',
+  content_type VARCHAR(32) NOT NULL DEFAULT 'text' COMMENT '消息类型: text文本, image图片, file文件',
+  content TEXT NULL COMMENT '消息内容',
+  attachment_urls JSON NULL COMMENT '附件URL列表',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   KEY idx_chat_messages_conversation_id (conversation_id, id),
   KEY idx_chat_messages_created_at (created_at)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='聊天消息表';
 
+-- 快捷回复模板表：客服快捷回复
 CREATE TABLE IF NOT EXISTS chat_quick_replies (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  admin_user_id BIGINT UNSIGNED NOT NULL DEFAULT 0 COMMENT '0=全局, >0=个人',
+  admin_user_id BIGINT UNSIGNED NOT NULL DEFAULT 0 COMMENT '所属管理员ID: 0表示全局模板',
   title VARCHAR(64) NOT NULL COMMENT '快捷回复标题',
   content TEXT NOT NULL COMMENT '回复内容',
-  sort_order INT NOT NULL DEFAULT 0 COMMENT '排序',
+  sort_order INT NOT NULL DEFAULT 0 COMMENT '排序权重',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  INDEX idx_admin_user_id (admin_user_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='快捷回复模板';
+  KEY idx_admin_user_id (admin_user_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='快捷回复模板表';
 
 -- -------------------------------------------
--- 开放上传记录
+-- 开放上传记录表
 -- -------------------------------------------
 
+-- 商品上传记录表：通过开放接口上传的商品记录
 CREATE TABLE IF NOT EXISTS listing_uploads (
   id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  uploader_name VARCHAR(64) NOT NULL,
-  matched_admin_id BIGINT UNSIGNED NULL,
-  owner_id BIGINT UNSIGNED NULL,
-  client_upload_time DATETIME NULL,
-  client_ip VARCHAR(64) NOT NULL DEFAULT '',
-  raw_payload JSON NULL,
-  parsed_payload JSON NULL,
-  listing_id BIGINT UNSIGNED NULL,
-  status VARCHAR(32) NOT NULL DEFAULT 'draft_created',
-  error_message VARCHAR(255) NOT NULL DEFAULT '',
+  uploader_name VARCHAR(64) NOT NULL COMMENT '上传者名称',
+  matched_admin_id BIGINT UNSIGNED NULL COMMENT '匹配到的管理员ID',
+  owner_id BIGINT UNSIGNED NULL COMMENT '商品所有者ID',
+  client_upload_time DATETIME NULL COMMENT '客户端上传时间',
+  client_ip VARCHAR(64) NOT NULL DEFAULT '' COMMENT '客户端IP',
+  raw_payload JSON NULL COMMENT '原始请求数据',
+  parsed_payload JSON NULL COMMENT '解析后的数据',
+  listing_id BIGINT UNSIGNED NULL COMMENT '创建的商品ID',
+  status VARCHAR(32) NOT NULL DEFAULT 'draft_created' COMMENT '状态: draft_created草稿已创建, published已发布, failed失败',
+  error_message VARCHAR(255) NOT NULL DEFAULT '' COMMENT '错误信息',
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   KEY idx_listing_uploads_uploader_name (uploader_name),
   KEY idx_listing_uploads_matched_admin_id (matched_admin_id),
   KEY idx_listing_uploads_owner_id (owner_id),
   KEY idx_listing_uploads_listing_id (listing_id)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='商品上传记录表';
+
+-- -------------------------------------------
+-- 公告系统表
+-- -------------------------------------------
+
+-- 公告表：系统公告、通知等
+CREATE TABLE IF NOT EXISTS announcements (
+  id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
+  title VARCHAR(255) NOT NULL COMMENT '公告标题',
+  content TEXT NOT NULL COMMENT '公告内容(支持Markdown)',
+  category VARCHAR(32) NOT NULL DEFAULT 'notice' COMMENT '分类: notice通知, tutorial教程, rule规则, faq常见问题',
+  priority INT NOT NULL DEFAULT 0 COMMENT '优先级(数值越大越靠前)',
+  is_pinned TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否置顶: 0否, 1是',
+  is_important TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否重要: 0否, 1是',
+  view_count INT NOT NULL DEFAULT 0 COMMENT '查看次数',
+  status VARCHAR(32) NOT NULL DEFAULT 'draft' COMMENT '状态: draft草稿, published已发布, archived已归档',
+  published_at DATETIME NULL COMMENT '发布时间',
+  created_by BIGINT UNSIGNED NULL COMMENT '创建者ID(管理员)',
+  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  KEY idx_announcements_status (status, is_pinned, priority, published_at),
+  KEY idx_announcements_category (category, status)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='公告表';
 
 SET FOREIGN_KEY_CHECKS = 1;
 
 -- -------------------------------------------
--- 权限数据
+-- 权限数据初始化
 -- -------------------------------------------
 
 INSERT INTO permissions (code, name, resource, action) VALUES
@@ -462,14 +517,16 @@ INSERT INTO permissions (code, name, resource, action) VALUES
 ('role:manage',           '角色管理',         'role',           'manage'),
 ('system_config:view',    '查看系统配置',     'system_config',  'view'),
 ('system_config:update',  '修改系统配置',     'system_config',  'update'),
-('audit_log:view',        '查看审计日志',     'audit_log',      'view')
+('audit_log:view',        '查看审计日志',     'audit_log',      'view'),
+('announcement:view',     '查看公告',         'announcement',   'view'),
+('announcement:manage',   '管理公告',         'announcement',   'manage')
 ON DUPLICATE KEY UPDATE
   name = VALUES(name),
   resource = VALUES(resource),
   action = VALUES(action);
 
 -- -------------------------------------------
--- 角色数据
+-- 角色数据初始化
 -- -------------------------------------------
 
 INSERT INTO roles (code, name, description) VALUES
@@ -493,7 +550,7 @@ WHERE r.code = 'cs' AND p.code IN ('dashboard:view', 'user:view', 'dispute:view'
 -- ops 角色权限
 INSERT IGNORE INTO role_permissions (role_id, permission_id)
 SELECT r.id, p.id FROM roles r, permissions p
-WHERE r.code = 'ops' AND p.code IN ('dashboard:view', 'user:view', 'user:freeze', 'user:unfreeze', 'order:view', 'order:close', 'order:mark_abnormal', 'listing:view', 'listing:approve', 'listing:reject', 'listing:offline', 'dispute:view', 'audit_log:view');
+WHERE r.code = 'ops' AND p.code IN ('dashboard:view', 'user:view', 'user:freeze', 'user:unfreeze', 'order:view', 'order:close', 'order:mark_abnormal', 'listing:view', 'listing:approve', 'listing:reject', 'listing:offline', 'dispute:view', 'audit_log:view', 'announcement:view', 'announcement:manage');
 
 -- finance 角色权限
 INSERT IGNORE INTO role_permissions (role_id, permission_id)
@@ -501,10 +558,10 @@ SELECT r.id, p.id FROM roles r, permissions p
 WHERE r.code = 'finance' AND p.code IN ('dashboard:view', 'wallet:view', 'order:view');
 
 -- -------------------------------------------
--- 管理员账号
+-- 管理员账号初始化
 -- -------------------------------------------
 
--- 生成 admin 密码 hash: admin123456
+-- 初始化管理员账号（密码: admin123456）
 INSERT INTO admin_users (username, password_hash, nickname, status) VALUES
 ('admin', '$2a$10$vvDd.cYJCOBl9kr5jdRYXu9C/7GXcHmXsG17zJPHzPOZ0XGbqcWNS', '超级管理员', 'active'),
 ('kf1', '$2a$10$7cx3B4IWunLZO24o11YVGu4qY1J1naDdsTyvoCpcnOO.GV15qaf3C', '客服1', 'active'),
@@ -524,7 +581,7 @@ SELECT au.id, r.id FROM admin_users au, roles r
 WHERE au.username IN ('kf1', 'kf2') AND r.code = 'cs';
 
 -- -------------------------------------------
--- 系统配置
+-- 系统配置初始化
 -- -------------------------------------------
 
 INSERT INTO system_configs (`key`, `value`, description) VALUES
@@ -535,3 +592,109 @@ INSERT INTO system_configs (`key`, `value`, description) VALUES
 ON DUPLICATE KEY UPDATE
   `value` = VALUES(`value`),
   description = VALUES(description);
+
+-- -------------------------------------------
+-- 公告数据初始化
+-- -------------------------------------------
+
+INSERT INTO announcements (title, content, category, priority, is_pinned, is_important, status, published_at) VALUES
+('号主须知（重要！）', '## 平台担保交易，拒绝私下转账！
+
+平台提供交易担保机制，用户支付的押金与租金全部冻结在平台账户中，租号结束后根据账号状态自动结算给号主或退款给租客。
+
+**警告：**
+- 账号被非本人，请看到此消息后主动下架账号！
+- 不要随意更改账号密码或绑定信息
+- 请勿诱导买家进行私下交易
+- 违规将会被冻结账户并承担相应损失
+
+有任何问题请联系客服处理。', 'notice', 100, 1, 1, 'published', NOW()),
+
+('租客须知（重要！）', '## 账号使用规范
+
+1. **禁止修改账号信息** - 不得修改账号密码、绑定手机、实名信息等
+2. **禁止充值** - 租用期间请勿对账号进行任何形式的充值
+3. **禁止违规操作** - 不得使用外挂、辅助工具，不得进行恶意行为
+4. **按时归还** - 租用到期后请及时归还账号，逾期将扣除押金
+
+**温馨提示：**
+- 交接账号后请第一时间登录验证
+- 发现账号异常请立即联系客服
+- 使用过程中遇到问题随时咨询客服
+
+祝您游戏愉快！', 'notice', 99, 1, 1, 'published', NOW()),
+
+('人脸验证教程', '## 如何完成实名认证
+
+为了保障交易安全，平台要求所有用户完成实名认证后才能发布商品和下单。
+
+### 认证步骤：
+
+1. 进入"个人资料"页面
+2. 点击"实名认证"按钮
+3. 按照提示填写真实姓名和身份证号
+4. 进行人脸识别验证
+5. 等待系统审核（通常1-3分钟）
+
+### 注意事项：
+
+- 请确保光线充足，面部清晰
+- 摘下眼镜、帽子等遮挡物
+- 一个身份证只能认证一个账号
+- 认证信息仅用于交易安全，平台严格保密
+
+认证失败请联系客服协助处理。', 'tutorial', 90, 0, 0, 'published', NOW()),
+
+('除纯市外其他高级物资默认从收费表', '## 出租开始须必开启备锁！
+
+号主在出租账号前，务必确保账号已开启"账号保护"功能（即备锁）。
+
+### 为什么要开启备锁？
+
+- 防止租客恶意修改账号信息
+- 保护账号安全，降低被盗风险
+- 发生纠纷时便于平台介入处理
+- 租用结束后方便号主快速收回账号
+
+### 如何开启？
+
+具体开启方式请参考游戏官方设置，不同平台操作略有差异。如不清楚如何设置，请咨询客服。
+
+**重要提醒：未开启备锁导致的账号安全问题，平台不承担责任！**', 'rule', 80, 0, 0, 'published', NOW()),
+
+('出租完成后如何结算？', '## 租金结算流程
+
+租用期满后，系统会根据账号状态自动进行结算：
+
+### 正常归还
+- 租客按时归还账号
+- 号主确认账号无异常
+- 系统自动将租金结算到号主钱包
+- 押金退还给租客
+
+### 异常情况
+- 账号信息被修改 → 押金赔付给号主
+- 账号被找回 → 租金退还给租客
+- 产生纠纷 → 平台客服介入仲裁
+
+### 提现说明
+目前提现功能暂未开放，敬请期待后续更新。', 'faq', 70, 0, 0, 'published', NOW()),
+
+('如何联系客服？', '## 客服联系方式
+
+遇到问题可以通过以下方式联系客服：
+
+1. **在线客服** - 点击页面右上角"客服"按钮，即可在线咨询
+2. **订单页面** - 每个订单详情页都有专属客服入口
+3. **消息中心** - 查看历史咨询记录
+
+### 客服工作时间
+- 工作日：09:00 - 22:00
+- 节假日：10:00 - 20:00
+
+非工作时间留言，客服上线后会第一时间回复。', 'faq', 60, 0, 0, 'published', NOW());
+
+-- ============================================
+-- 数据库初始化完成
+-- ============================================
+
diff --git a/backend/migrations/000002_payment_refund_schema.sql b/backend/migrations/000002_payment_refund_schema.sql
deleted file mode 100644
index a0ae7a8..0000000
--- a/backend/migrations/000002_payment_refund_schema.sql
+++ /dev/null
@@ -1,77 +0,0 @@
--- 支付退款字段补齐：兼容已经应用过 000001 的现有数据库。
-
-SET @has_refund_status := (
-  SELECT COUNT(*) FROM information_schema.columns
-  WHERE table_schema = DATABASE() AND table_name = 'rental_orders' AND column_name = 'refund_status'
-);
-SET @sql := IF(@has_refund_status = 0,
-  'ALTER TABLE rental_orders ADD COLUMN refund_status VARCHAR(32) NOT NULL DEFAULT ''none'' AFTER settlement_status',
-  'SELECT 1'
-);
-PREPARE stmt FROM @sql;
-EXECUTE stmt;
-DEALLOCATE PREPARE stmt;
-
-SET @has_refund_amount_cent := (
-  SELECT COUNT(*) FROM information_schema.columns
-  WHERE table_schema = DATABASE() AND table_name = 'rental_orders' AND column_name = 'refund_amount_cent'
-);
-SET @sql := IF(@has_refund_amount_cent = 0,
-  'ALTER TABLE rental_orders ADD COLUMN refund_amount_cent BIGINT NOT NULL DEFAULT 0 AFTER refund_status',
-  'SELECT 1'
-);
-PREPARE stmt FROM @sql;
-EXECUTE stmt;
-DEALLOCATE PREPARE stmt;
-
-SET @has_refunded_at := (
-  SELECT COUNT(*) FROM information_schema.columns
-  WHERE table_schema = DATABASE() AND table_name = 'rental_orders' AND column_name = 'refunded_at'
-);
-SET @sql := IF(@has_refunded_at = 0,
-  'ALTER TABLE rental_orders ADD COLUMN refunded_at DATETIME NULL AFTER refund_amount_cent',
-  'SELECT 1'
-);
-PREPARE stmt FROM @sql;
-EXECUTE stmt;
-DEALLOCATE PREPARE stmt;
-
-SET @has_order_refund_idx := (
-  SELECT COUNT(*) FROM information_schema.statistics
-  WHERE table_schema = DATABASE() AND table_name = 'rental_orders' AND index_name = 'idx_rental_orders_refund_status'
-);
-SET @sql := IF(@has_order_refund_idx = 0,
-  'ALTER TABLE rental_orders ADD KEY idx_rental_orders_refund_status (refund_status)',
-  'SELECT 1'
-);
-PREPARE stmt FROM @sql;
-EXECUTE stmt;
-DEALLOCATE PREPARE stmt;
-
-SET @has_payment_biz_type := (
-  SELECT COUNT(*) FROM information_schema.columns
-  WHERE table_schema = DATABASE() AND table_name = 'payment_orders' AND column_name = 'biz_type'
-);
-SET @sql := IF(@has_payment_biz_type = 0,
-  'ALTER TABLE payment_orders ADD COLUMN biz_type VARCHAR(32) NOT NULL DEFAULT ''order_pay'' AFTER amount_cent',
-  'SELECT 1'
-);
-PREPARE stmt FROM @sql;
-EXECUTE stmt;
-DEALLOCATE PREPARE stmt;
-
-SET @has_payment_biz_idx := (
-  SELECT COUNT(*) FROM information_schema.statistics
-  WHERE table_schema = DATABASE() AND table_name = 'payment_orders' AND index_name = 'idx_payment_orders_biz_type'
-);
-SET @sql := IF(@has_payment_biz_idx = 0,
-  'ALTER TABLE payment_orders ADD KEY idx_payment_orders_biz_type (biz_type)',
-  'SELECT 1'
-);
-PREPARE stmt FROM @sql;
-EXECUTE stmt;
-DEALLOCATE PREPARE stmt;
-
-UPDATE payment_orders
-SET biz_type = CASE WHEN order_id = 0 THEN 'wallet_recharge' ELSE 'order_pay' END
-WHERE biz_type = '' OR biz_type = 'order_pay';
diff --git a/backend/migrations/000003_add_indexes.sql b/backend/migrations/000003_add_indexes.sql
deleted file mode 100644
index 7ddf44a..0000000
--- a/backend/migrations/000003_add_indexes.sql
+++ /dev/null
@@ -1,66 +0,0 @@
--- ============================================
--- 数据库索引优化迁移
--- 创建时间: 2026-06-05
--- 目的: 优化高频查询的性能
--- ============================================
-
-SET NAMES utf8mb4;
-
--- -------------------------------------------
--- 1. 订单状态+创建时间复合索引
--- 用途: 后台订单管理、用户订单列表按时间排序
--- 场景: SELECT * FROM rental_orders WHERE status = ? ORDER BY created_at DESC
--- -------------------------------------------
-
-ALTER TABLE rental_orders
-ADD INDEX idx_rental_orders_status_created_at (status, created_at DESC);
-
--- -------------------------------------------
--- 2. 钱包流水按用户+业务类型+时间查询
--- 用途: 用户查看特定类型的流水记录
--- 场景: SELECT * FROM wallet_ledger WHERE user_id = ? AND biz_type = ? ORDER BY created_at DESC
--- -------------------------------------------
-
-ALTER TABLE wallet_ledger
-ADD INDEX idx_wallet_ledger_user_biz_created (user_id, biz_type, created_at DESC);
-
--- -------------------------------------------
--- 3. 订单结算状态查询优化
--- 用途: 查询待结算订单、按号主查询结算记录
--- 场景: SELECT * FROM rental_orders WHERE settlement_status = ? AND owner_id = ? ORDER BY created_at
--- -------------------------------------------
-
-ALTER TABLE rental_orders
-ADD INDEX idx_rental_orders_settlement (settlement_status, owner_id, created_at);
-
--- -------------------------------------------
--- 4. 商品发布时间查询优化
--- 用途: 首页商品列表按发布时间排序
--- 场景: SELECT * FROM rental_listings WHERE status = 'active' AND review_status = 'approved' ORDER BY published_at DESC
--- 注意: 使用部分索引（MySQL 8.0+）只索引可用商品
--- -------------------------------------------
-
-ALTER TABLE rental_listings
-ADD INDEX idx_rental_listings_published (status, review_status, published_at DESC);
-
--- 如果需要进一步优化，可以考虑添加 in_transaction 列
--- 但当前索引已经足够覆盖大部分查询
-
--- -------------------------------------------
--- 5. 用户实名认证状态查询
--- 用途: 查询未实名用户、查询活跃且已实名用户
--- 场景: SELECT * FROM users WHERE realname_status = 'verified' AND status = 'active'
--- -------------------------------------------
-
-ALTER TABLE users
-ADD INDEX idx_users_realname_status (realname_status, status);
-
--- ============================================
--- 索引创建完成
--- ============================================
-
--- 验证索引创建情况（可选，用于开发环境验证）
--- SHOW INDEX FROM rental_orders WHERE Key_name LIKE 'idx_rental_orders_%';
--- SHOW INDEX FROM wallet_ledger WHERE Key_name LIKE 'idx_wallet_ledger_%';
--- SHOW INDEX FROM rental_listings WHERE Key_name LIKE 'idx_rental_listings_%';
--- SHOW INDEX FROM users WHERE Key_name LIKE 'idx_users_%';
diff --git a/backend/migrations/000004_add_support_status.sql b/backend/migrations/000004_add_support_status.sql
deleted file mode 100644
index 9264156..0000000
--- a/backend/migrations/000004_add_support_status.sql
+++ /dev/null
@@ -1,8 +0,0 @@
--- 添加客服在线状态字段
--- support_status: online(在线), offline(离线), busy(忙碌)
-
-ALTER TABLE admin_users
-ADD COLUMN support_status VARCHAR(16) NOT NULL DEFAULT 'offline' COMMENT '客服状态: online在线, offline离线, busy忙碌';
-
--- 为查询客服状态添加索引
-CREATE INDEX idx_admin_users_support_status ON admin_users(support_status);
diff --git a/backend/migrations/000005_add_announcements.sql b/backend/migrations/000005_add_announcements.sql
deleted file mode 100644
index 7cceb18..0000000
--- a/backend/migrations/000005_add_announcements.sql
+++ /dev/null
@@ -1,22 +0,0 @@
--- ============================================
--- 公告系统表
--- ============================================
-
--- 公告表
-CREATE TABLE IF NOT EXISTS announcements (
-  id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
-  title VARCHAR(255) NOT NULL COMMENT '公告标题',
-  content TEXT NOT NULL COMMENT '公告内容（支持富文本/Markdown）',
-  category VARCHAR(32) NOT NULL DEFAULT 'notice' COMMENT '分类: notice(通知), tutorial(教程), rule(规则), faq(常见问题)',
-  priority INT NOT NULL DEFAULT 0 COMMENT '优先级，数值越大越靠前',
-  is_pinned TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否置顶',
-  is_important TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否重要（重要的会有特殊标记）',
-  view_count INT NOT NULL DEFAULT 0 COMMENT '查看次数',
-  status VARCHAR(32) NOT NULL DEFAULT 'draft' COMMENT '状态: draft(草稿), published(已发布), archived(已归档)',
-  published_at DATETIME NULL COMMENT '发布时间',
-  created_by BIGINT UNSIGNED NULL COMMENT '创建者ID（管理员）',
-  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  KEY idx_announcements_status (status, is_pinned, priority, published_at),
-  KEY idx_announcements_category (category, status)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='公告表';
diff --git a/backend/migrations/000006_insert_sample_announcements.sql b/backend/migrations/000006_insert_sample_announcements.sql
deleted file mode 100644
index b11e56d..0000000
--- a/backend/migrations/000006_insert_sample_announcements.sql
+++ /dev/null
@@ -1,98 +0,0 @@
--- 插入示例公告数据
-
-INSERT INTO announcements (title, content, category, priority, is_pinned, is_important, status, published_at) VALUES
-('号主须知（重要！）', '## 平台担保交易，拒绝私下转账！
-
-平台提供交易担保机制，用户支付的押金与租金全部冻结在平台账户中，租号结束后根据账号状态自动结算给号主或退款给租客。
-
-**警告：**
-- 账号被非本人，请看到此消息后主动下架账号！
-- 不要随意更改账号密码或绑定信息
-- 请勿诱导买家进行私下交易
-- 违规将会被冻结账户并承担相应损失
-
-有任何问题请联系客服处理。', 'notice', 100, 1, 1, 'published', NOW()),
-
-('租客须知（重要！）', '## 账号使用规范
-
-1. **禁止修改账号信息** - 不得修改账号密码、绑定手机、实名信息等
-2. **禁止充值** - 租用期间请勿对账号进行任何形式的充值
-3. **禁止违规操作** - 不得使用外挂、辅助工具，不得进行恶意行为
-4. **按时归还** - 租用到期后请及时归还账号，逾期将扣除押金
-
-**温馨提示：**
-- 交接账号后请第一时间登录验证
-- 发现账号异常请立即联系客服
-- 使用过程中遇到问题随时咨询客服
-
-祝您游戏愉快！', 'notice', 99, 1, 1, 'published', NOW()),
-
-('人脸验证教程', '## 如何完成实名认证
-
-为了保障交易安全，平台要求所有用户完成实名认证后才能发布商品和下单。
-
-### 认证步骤：
-
-1. 进入"个人资料"页面
-2. 点击"实名认证"按钮
-3. 按照提示填写真实姓名和身份证号
-4. 进行人脸识别验证
-5. 等待系统审核（通常1-3分钟）
-
-### 注意事项：
-
-- 请确保光线充足，面部清晰
-- 摘下眼镜、帽子等遮挡物
-- 一个身份证只能认证一个账号
-- 认证信息仅用于交易安全，平台严格保密
-
-认证失败请联系客服协助处理。', 'tutorial', 90, 0, 0, 'published', NOW()),
-
-('除纯市外其他高级物资默认从收费表', '## 出租开始须必开启备锁！
-
-号主在出租账号前，务必确保账号已开启"账号保护"功能（即备锁）。
-
-### 为什么要开启备锁？
-
-- 防止租客恶意修改账号信息
-- 保护账号安全，降低被盗风险
-- 发生纠纷时便于平台介入处理
-- 租用结束后方便号主快速收回账号
-
-### 如何开启？
-
-具体开启方式请参考游戏官方设置，不同平台操作略有差异。如不清楚如何设置，请咨询客服。
-
-**重要提醒：未开启备锁导致的账号安全问题，平台不承担责任！**', 'rule', 80, 0, 0, 'published', NOW()),
-
-('出租完成后如何结算？', '## 租金结算流程
-
-租用期满后，系统会根据账号状态自动进行结算：
-
-### 正常归还
-- 租客按时归还账号
-- 号主确认账号无异常
-- 系统自动将租金结算到号主钱包
-- 押金退还给租客
-
-### 异常情况
-- 账号信息被修改 → 押金赔付给号主
-- 账号被找回 → 租金退还给租客
-- 产生纠纷 → 平台客服介入仲裁
-
-### 提现说明
-目前提现功能暂未开放，敬请期待后续更新。', 'faq', 70, 0, 0, 'published', NOW()),
-
-('如何联系客服？', '## 客服联系方式
-
-遇到问题可以通过以下方式联系客服：
-
-1. **在线客服** - 点击页面右上角"客服"按钮，即可在线咨询
-2. **订单页面** - 每个订单详情页都有专属客服入口
-3. **消息中心** - 查看历史咨询记录
-
-### 客服工作时间
-- 工作日：09:00 - 22:00
-- 节假日：10:00 - 20:00
-
-非工作时间留言，客服上线后会第一时间回复。', 'faq', 60, 0, 0, 'published', NOW());
diff --git a/backend/migrations/000007_add_announcement_permissions.sql b/backend/migrations/000007_add_announcement_permissions.sql
deleted file mode 100644
index 5f7aeaa..0000000
--- a/backend/migrations/000007_add_announcement_permissions.sql
+++ /dev/null
@@ -1,19 +0,0 @@
--- 添加公告管理权限
-
-INSERT INTO permissions (code, name, resource, action) VALUES
-('announcement:view',    '查看公告',    'announcement',  'view'),
-('announcement:manage',  '管理公告',    'announcement',  'manage')
-ON DUPLICATE KEY UPDATE
-  name = VALUES(name),
-  resource = VALUES(resource),
-  action = VALUES(action);
-
--- 为超级管理员添加公告权限
-INSERT IGNORE INTO role_permissions (role_id, permission_id)
-SELECT r.id, p.id FROM roles r CROSS JOIN permissions p
-WHERE r.code = 'super_admin' AND p.code IN ('announcement:view', 'announcement:manage');
-
--- 为运营角色添加公告权限
-INSERT IGNORE INTO role_permissions (role_id, permission_id)
-SELECT r.id, p.id FROM roles r, permissions p
-WHERE r.code = 'ops' AND p.code IN ('announcement:view', 'announcement:manage');
diff --git a/backend/migrations/000008_fix_announcement_charset.sql b/backend/migrations/000008_fix_announcement_charset.sql
deleted file mode 100644
index 5087fe5..0000000
--- a/backend/migrations/000008_fix_announcement_charset.sql
+++ /dev/null
@@ -1,105 +0,0 @@
--- 修复公告数据编码问题
-
--- 1. 清空现有的示例数据
-TRUNCATE TABLE announcements;
-
--- 2. 确保表使用正确的字符集
-ALTER TABLE announcements CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
-
--- 3. 重新插入正确编码的示例数据
-INSERT INTO announcements (title, content, category, priority, is_pinned, is_important, status, published_at) VALUES
-('号主须知（重要！）', '## 平台担保交易，拒绝私下转账！
-
-平台提供交易担保机制，用户支付的押金与租金全部冻结在平台账户中，租号结束后根据账号状态自动结算给号主或退款给租客。
-
-**警告：**
-- 账号被非本人，请看到此消息后主动下架账号！
-- 不要随意更改账号密码或绑定信息
-- 请勿诱导买家进行私下交易
-- 违规将会被冻结账户并承担相应损失
-
-有任何问题请联系客服处理。', 'notice', 100, 1, 1, 'published', NOW()),
-
-('租客须知（重要！）', '## 账号使用规范
-
-1. **禁止修改账号信息** - 不得修改账号密码、绑定手机、实名信息等
-2. **禁止充值** - 租用期间请勿对账号进行任何形式的充值
-3. **禁止违规操作** - 不得使用外挂、辅助工具，不得进行恶意行为
-4. **按时归还** - 租用到期后请及时归还账号，逾期将扣除押金
-
-**温馨提示：**
-- 交接账号后请第一时间登录验证
-- 发现账号异常请立即联系客服
-- 使用过程中遇到问题随时咨询客服
-
-祝您游戏愉快！', 'notice', 99, 1, 1, 'published', NOW()),
-
-('人脸验证教程', '## 如何完成实名认证
-
-为了保障交易安全，平台要求所有用户完成实名认证后才能发布商品和下单。
-
-### 认证步骤：
-
-1. 进入"个人资料"页面
-2. 点击"实名认证"按钮
-3. 按照提示填写真实姓名和身份证号
-4. 进行人脸识别验证
-5. 等待系统审核（通常1-3分钟）
-
-### 注意事项：
-
-- 请确保光线充足，面部清晰
-- 摘下眼镜、帽子等遮挡物
-- 一个身份证只能认证一个账号
-- 认证信息仅用于交易安全，平台严格保密
-
-认证失败请联系客服协助处理。', 'tutorial', 90, 0, 0, 'published', NOW()),
-
-('除纯市外其他高级物资默认从收费表', '## 出租开始须必开启备锁！
-
-号主在出租账号前，务必确保账号已开启"账号保护"功能（即备锁）。
-
-### 为什么要开启备锁？
-
-- 防止租客恶意修改账号信息
-- 保护账号安全，降低被盗风险
-- 发生纠纷时便于平台介入处理
-- 租用结束后方便号主快速收回账号
-
-### 如何开启？
-
-具体开启方式请参考游戏官方设置，不同平台操作略有差异。如不清楚如何设置，请咨询客服。
-
-**重要提醒：未开启备锁导致的账号安全问题，平台不承担责任！**', 'rule', 80, 0, 0, 'published', NOW()),
-
-('出租完成后如何结算？', '## 租金结算流程
-
-租用期满后，系统会根据账号状态自动进行结算：
-
-### 正常归还
-- 租客按时归还账号
-- 号主确认账号无异常
-- 系统自动将租金结算到号主钱包
-- 押金退还给租客
-
-### 异常情况
-- 账号信息被修改 → 押金赔付给号主
-- 账号被找回 → 租金退还给租客
-- 产生纠纷 → 平台客服介入仲裁
-
-### 提现说明
-目前提现功能暂未开放，敬请期待后续更新。', 'faq', 70, 0, 0, 'published', NOW()),
-
-('如何联系客服？', '## 客服联系方式
-
-遇到问题可以通过以下方式联系客服：
-
-1. **在线客服** - 点击页面右上角"客服"按钮，即可在线咨询
-2. **订单页面** - 每个订单详情页都有专属客服入口
-3. **消息中心** - 查看历史咨询记录
-
-### 客服工作时间
-- 工作日：09:00 - 22:00
-- 节假日：10:00 - 20:00
-
-非工作时间留言，客服上线后会第一时间回复。', 'faq', 60, 0, 0, 'published', NOW());