修复：恢复 PostgreSQL 集成测试并规范工单搜索条件

test-fix-artifacts/BASELINE_postgres_integration.test.ts

@@ -0,0 +1,60 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import { Pool } from 'pg'
+
+const connectionString = process.env.TEST_POSTGRES_URL
+
+test('real PostgreSQL transaction rolls back atomically', { skip: !connectionString }, async () => {
+  const pool = new Pool({ connectionString })
+  const client = await pool.connect()
+  const tableName = `integration_tx_${Date.now()}`
+  try {
+    await client.query(`CREATE TEMP TABLE ${tableName} (id integer primary key, value text)`)
+    await client.query('BEGIN')
+    await client.query(`INSERT INTO ${tableName} (id, value) VALUES (1, 'before-error')`)
+    try {
+      await client.query(`INSERT INTO ${tableName} (id, value) VALUES (1, 'duplicate')`)
+    } catch {
+      await client.query('ROLLBACK')
+    }
+    const result = await client.query(`SELECT COUNT(*)::int AS count FROM ${tableName}`)
+    assert.equal(result.rows[0].count, 0)
+  } finally {
+    client.release()
+    await pool.end()
+  }
+})
+
+test(
+  'real PostgreSQL enforces callback replay idempotency under concurrency',
+  {
+    skip: !connectionString,
+  },
+  async () => {
+    const pool = new Pool({ connectionString })
+    const tableName = `integration_webhook_${Date.now()}`
+    try {
+      await pool.query(
+        `CREATE TEMP TABLE ${tableName} (
+        id serial primary key,
+        provider text not null,
+        event_id text not null,
+        unique(provider, event_id)
+      )`,
+      )
+      await Promise.all(
+        Array.from({ length: 8 }, () =>
+          pool.query(
+            `INSERT INTO ${tableName} (provider, event_id)
+           VALUES ('integration', 'replay-1')
+           ON CONFLICT (provider, event_id) DO NOTHING`,
+          ),
+        ),
+      )
+      const result = await pool.query(`SELECT COUNT(*)::int AS count FROM ${tableName}`)
+      assert.equal(result.rows[0].count, 1)
+    } finally {
+      await pool.end()
+    }
+  },
+)