{
  "id": "purchase-submit-tx-timeout",
  "name": "purchase-submit-tx-timeout",
  "title": "采购提交事务负载下超时返回500",
  "description": "负载复现中采购提交交互事务超过Prisma默认5000ms（P2028）返回500；生产b1d25d3c起同写法。查清耗时构成（锁等待/事务内查询），给出最小修复。",
  "status": "planning",
  "dev_type": null,
  "scope": "transaction-timeout",
  "package": null,
  "priority": "P2",
  "creator": "shunli",
  "assignee": "shunli",
  "createdAt": "2026-09-27",
  "completedAt": null,
  "branch": null,
  "base_branch": "main",
  "worktree_path": null,
  "commit": null,
  "pr_url": null,
  "subtasks": [],
  "children": [],
  "parent": null,
  "relatedFiles": [
    "server/src/routes/purchaseRequests.js",
    "server/src/routes/reimbursements.js",
    "server/tests/unit/routes/purchase.submit-budget-precheck.test.js",
    "server/tests/unit/routes/reimbursements.expense-standards.test.js"
  ],
  "notes": "",
  "meta": {
    "implementationApproval": "APPROVED_BY_USER_20260927"
  }
}