feat: 商户冻结/解冻功能及字典缓存重构

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/Domain/TakeoutSaaS.Domain/Dictionary/Entities/DictionaryGroup.cs

@@ -40,9 +40,9 @@ public sealed class DictionaryGroup : MultiTenantEntityBase
     public bool IsEnabled { get; set; } = true;
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 
     /// <summary>
     /// 字典项集合。

src/Domain/TakeoutSaaS.Domain/Dictionary/Entities/DictionaryItem.cs

@@ -43,9 +43,9 @@ public sealed class DictionaryItem : MultiTenantEntityBase
     public string? Description { get; set; }
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 
     /// <summary>
     /// 导航属性：所属分组。

src/Domain/TakeoutSaaS.Domain/Identity/Entities/IdentityUser.cs

@@ -79,7 +79,7 @@ public sealed class IdentityUser : AuditableEntityBase
     public string? Avatar { get; set; }
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }

src/Domain/TakeoutSaaS.Domain/Inventory/Entities/InventoryBatch.cs

@@ -45,8 +45,7 @@ public sealed class InventoryBatch : MultiTenantEntityBase
     public int RemainingQuantity { get; set; }
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    [Timestamp]
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }

src/Domain/TakeoutSaaS.Domain/Inventory/Entities/InventoryItem.cs

@@ -91,8 +91,7 @@ public sealed class InventoryItem : MultiTenantEntityBase
     public InventoryBatchConsumeStrategy BatchConsumeStrategy { get; set; } = InventoryBatchConsumeStrategy.Fifo;
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    [Timestamp]
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }

src/Domain/TakeoutSaaS.Domain/Inventory/Entities/InventoryLockRecord.cs

@@ -45,8 +45,7 @@ public sealed class InventoryLockRecord : MultiTenantEntityBase
     public InventoryLockStatus Status { get; set; } = InventoryLockStatus.Locked;
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    [Timestamp]
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }

src/Domain/TakeoutSaaS.Domain/Merchants/Entities/Merchant.cs

@@ -175,7 +175,7 @@ public sealed class Merchant : MultiTenantEntityBase
     public DateTime? ClaimExpiresAt { get; set; }
 
     /// <summary>
-    /// 并发控制版本。
+    /// 并发控制版本（映射到 PostgreSQL xmin）。
     /// </summary>
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }

src/Domain/TakeoutSaaS.Domain/Merchants/Enums/MerchantAuditAction.cs

@@ -68,5 +68,15 @@ public enum MerchantAuditAction
     /// <summary>
     /// 强制接管审核。
     /// </summary>
-    ReviewForceClaimed = 12
+    ReviewForceClaimed = 12,
+
+    /// <summary>
+    /// 商户冻结。
+    /// </summary>
+    Frozen = 13,
+
+    /// <summary>
+    /// 商户解冻。
+    /// </summary>
+    Unfrozen = 14
 }

src/Domain/TakeoutSaaS.Domain/Stores/Entities/StorePickupSetting.cs

@@ -34,8 +34,7 @@ public sealed class StorePickupSetting : MultiTenantEntityBase
     public int? MaxQuantityPerOrder { get; set; }
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    [Timestamp]
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }

src/Domain/TakeoutSaaS.Domain/Stores/Entities/StorePickupSlot.cs

@@ -54,8 +54,7 @@ public sealed class StorePickupSlot : MultiTenantEntityBase
     public bool IsEnabled { get; set; } = true;
 
     /// <summary>
-    /// 并发控制字段。
+    /// 并发控制字段（映射到 PostgreSQL xmin）。
     /// </summary>
-    [Timestamp]
-    public byte[] RowVersion { get; set; } = Array.Empty<byte>();
+    public uint RowVersion { get; set; }
 }