feat(contribution): 系统账户明细记录改为软删除

- 在 SystemContributionRecord 模型添加 deleted_at 字段
- 修改 deleteContributionRecordsByAdoption 方法为软删除（设置 deleted_at）
- 修改 findContributionRecords 方法过滤已删除记录（deletedAt: null）
- 添加数据库迁移文件

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

backend/services/contribution-service/prisma/migrations/0002_add_soft_delete_to_system_contribution_records/migration.sql

@@ -0,0 +1,5 @@
+-- AlterTable: Add soft delete column to system_contribution_records
+ALTER TABLE "system_contribution_records" ADD COLUMN "deleted_at" TIMESTAMP(3);
+
+-- CreateIndex
+CREATE INDEX "system_contribution_records_deleted_at_idx" ON "system_contribution_records"("deleted_at");

backend/services/contribution-service/prisma/schema.prisma

@@ -334,12 +334,14 @@ model SystemContributionRecord {
   expireDate    DateTime? @map("expire_date") @db.Date
   isExpired     Boolean   @default(false) @map("is_expired")
 
-  createdAt DateTime @default(now()) @map("created_at")
+  createdAt DateTime  @default(now()) @map("created_at")
+  deletedAt DateTime? @map("deleted_at") // 软删除标记
 
   systemAccount SystemAccount @relation(fields: [systemAccountId], references: [id])
 
   @@index([systemAccountId])
   @@index([sourceAdoptionId])
+  @@index([deletedAt])
   @@map("system_contribution_records")
 }
 

backend/services/contribution-service/src/infrastructure/persistence/repositories/system-account.repository.ts

@@ -191,7 +191,7 @@ export class SystemAccountRepository {
   }
 
   /**
-   * 删除指定来源认种的明细记录
+   * 软删除指定来源认种的明细记录
    */
   async deleteContributionRecordsByAdoption(
     accountType: SystemAccountType,
@@ -204,11 +204,15 @@ export class SystemAccountRepository {
       return 0;
     }
 
-    const result = await this.client.systemContributionRecord.deleteMany({
+    const result = await this.client.systemContributionRecord.updateMany({
       where: {
         systemAccountId: systemAccount.id,
         sourceAdoptionId,
         sourceAccountSequence,
+        deletedAt: null, // 只软删除未删除的记录
+      },
+      data: {
+        deletedAt: new Date(),
       },
     });
 
@@ -256,15 +260,20 @@ export class SystemAccountRepository {
       return { data: [], total: 0 };
     }
 
+    const whereClause = {
+      systemAccountId: systemAccount.id,
+      deletedAt: null, // 过滤已软删除的记录
+    };
+
     const [records, total] = await Promise.all([
       this.client.systemContributionRecord.findMany({
-        where: { systemAccountId: systemAccount.id },
+        where: whereClause,
         skip: (page - 1) * pageSize,
         take: pageSize,
         orderBy: { createdAt: 'desc' },
       }),
       this.client.systemContributionRecord.count({
-        where: { systemAccountId: systemAccount.id },
+        where: whereClause,
       }),
     ]);