fix(mining-wallet-service): use upsert in seed for 100% overwrite

Remove existence check, directly upsert pool accounts to ensure
consistent state on every seed run.

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

backend/services/mining-wallet-service/prisma/seed.ts

@@ -66,6 +66,7 @@ async function main() {
   // 积分股池A: 100亿 (10,000,000,000) - 用于销毁
   // 积分股池B: 200万 (2,000,000) - 用于挖矿分配
   // 总计: 100.02亿 (10,002,000,000)
+  // 直接 upsert 覆盖，不检查是否存在
   const poolAccounts = [
     {
       poolType: 'SHARE_POOL_A',
@@ -95,49 +96,28 @@ async function main() {
   ];
 
   for (const pool of poolAccounts) {
-    const existing = await prisma.poolAccount.findFirst({
+    const created = await prisma.poolAccount.upsert({
       where: { poolType: pool.poolType as any },
+      update: {
+        name: pool.name,
+        balance: pool.balance,
+        targetBurn: pool.targetBurn,
+        remainingBurn: pool.targetBurn,
+        description: pool.description,
+        isActive: true,
+      },
+      create: {
+        poolType: pool.poolType as any,
+        name: pool.name,
+        balance: pool.balance,
+        targetBurn: pool.targetBurn,
+        remainingBurn: pool.targetBurn,
+        description: pool.description,
+        isActive: true,
+      },
     });
 
-    if (!existing) {
-      const created = await prisma.poolAccount.create({
-        data: {
-          poolType: pool.poolType as any,
-          name: pool.name,
-          balance: pool.balance,
-          targetBurn: pool.targetBurn,
-          remainingBurn: pool.targetBurn,
-          description: pool.description,
-          isActive: true,
-        },
-      });
-
-      // 发布池账户创建事件到 Outbox
-      await prisma.outboxEvent.create({
-        data: {
-          aggregateType: 'PoolAccount',
-          aggregateId: created.id,
-          eventType: 'WalletPoolAccountCreated',
-          topic: 'mining-wallet.pool-account.created',
-          key: created.poolType,
-          payload: {
-            id: created.id,
-            poolType: created.poolType,
-            name: created.name,
-            balance: created.balance.toString(),
-            totalInflow: 0,
-            totalOutflow: 0,
-            targetBurn: created.targetBurn?.toString() || null,
-            remainingBurn: created.remainingBurn?.toString() || null,
-            isActive: created.isActive,
-          },
-        },
-      });
-
-      console.log(`Created pool account: ${pool.poolType}`);
-    } else {
-      console.log(`Pool account already exists: ${pool.poolType}`);
-    }
+    console.log(`Upserted pool account: ${pool.poolType}`);
   }
 
   console.log('Seeding completed!');