feat: 添加商户规则支持和用户实体扩展

- 在 `UserEntity` 中添加 `canteenId` 字段以支持离线模式
- 新增 `ServiceMchRule` 模型和相关 API 方法用于获取商户规则
- 更新 `CanteenExtraPriceSetting` 模型以包含商户规则列表
- 在 `CanteenProductController` 中添加获取商户规则的逻辑
- 更新数据库表结构以支持 `canteenId` 字段

lib/common/services/database/database.g.dart

@@ -136,7 +136,7 @@ class _$AppDatabase extends AppDatabase {
         await database.execute(
             'CREATE TABLE IF NOT EXISTS `print_history` (`id` INTEGER PRIMARY KEY AUTOINCREMENT, `orderId` TEXT NOT NULL, `serviceOrderId` TEXT NOT NULL, `servicePrintId` TEXT NOT NULL, `invoiceUrl` TEXT NOT NULL, `status` TEXT NOT NULL, `printTime` TEXT, `syncTime` TEXT, `createTime` TEXT NOT NULL)');
         await database.execute(
-            'CREATE TABLE IF NOT EXISTS `user_record` (`id` INTEGER PRIMARY KEY AUTOINCREMENT, `userId` TEXT NOT NULL, `nickname` TEXT NOT NULL, `mobile` TEXT, `avatar` TEXT, `walletCardNumber` TEXT, `walletId` TEXT, `walletTypeId` TEXT, `walletBalance` INTEGER, `createTime` TEXT, `updateTime` TEXT)');
+            'CREATE TABLE IF NOT EXISTS `user_record` (`id` INTEGER PRIMARY KEY AUTOINCREMENT, `userId` TEXT NOT NULL, `nickname` TEXT NOT NULL, `mobile` TEXT, `avatar` TEXT, `walletCardNumber` TEXT, `walletId` TEXT, `walletTypeId` TEXT, `walletBalance` INTEGER, `canteenId` INTEGER, `createTime` TEXT, `updateTime` TEXT)');
         await database.execute(
             'CREATE TABLE IF NOT EXISTS `face` (`id` INTEGER PRIMARY KEY AUTOINCREMENT, `userId` TEXT NOT NULL, `sampleId` TEXT NOT NULL, `userName` TEXT NOT NULL, `deptId` TEXT, `deptName` TEXT, `imagePath` TEXT NOT NULL, `path` TEXT, `faceModel` TEXT, `createTime` TEXT, `updateTime` TEXT)');
         await database.execute(
@@ -1381,6 +1381,7 @@ class _$UserDao extends UserDao {
                   'walletId': item.walletId,
                   'walletTypeId': item.walletTypeId,
                   'walletBalance': item.walletBalance,
+                  'canteenId': item.canteenId,
                   'createTime': _dateTimeEmptyConverter.encode(item.createTime),
                   'updateTime': _dateTimeEmptyConverter.encode(item.updateTime)
                 }),
@@ -1398,6 +1399,7 @@ class _$UserDao extends UserDao {
                   'walletId': item.walletId,
                   'walletTypeId': item.walletTypeId,
                   'walletBalance': item.walletBalance,
+                  'canteenId': item.canteenId,
                   'createTime': _dateTimeEmptyConverter.encode(item.createTime),
                   'updateTime': _dateTimeEmptyConverter.encode(item.updateTime)
                 }),
@@ -1415,6 +1417,7 @@ class _$UserDao extends UserDao {
                   'walletId': item.walletId,
                   'walletTypeId': item.walletTypeId,
                   'walletBalance': item.walletBalance,
+                  'canteenId': item.canteenId,
                   'createTime': _dateTimeEmptyConverter.encode(item.createTime),
                   'updateTime': _dateTimeEmptyConverter.encode(item.updateTime)
                 });
@@ -1445,6 +1448,7 @@ class _$UserDao extends UserDao {
             walletId: row['walletId'] as String?,
             walletTypeId: row['walletTypeId'] as String?,
             walletBalance: row['walletBalance'] as int?,
+            canteenId: row['canteenId'] as int?,
             createTime:
                 _dateTimeEmptyConverter.decode(row['createTime'] as String),
             updateTime:
@@ -1466,6 +1470,7 @@ class _$UserDao extends UserDao {
             walletId: row['walletId'] as String?,
             walletTypeId: row['walletTypeId'] as String?,
             walletBalance: row['walletBalance'] as int?,
+            canteenId: row['canteenId'] as int?,
             createTime:
                 _dateTimeEmptyConverter.decode(row['createTime'] as String),
             updateTime: