[
  {
    "pr_id": "PR-101",
    "author": "dev_b",
    "created_at": "2026-02-01T10:15:00Z",
    "merged_at": "2026-02-02T14:20:00Z",
    "files_changed": [
      "services/payments/transaction_service.py",
      "services/payments/validator.py"
    ]
  },
  {
    "pr_id": "PR-102",
    "author": "dev_c",
    "created_at": "2026-02-03T09:30:00Z",
    "merged_at": "2026-02-03T18:10:00Z",
    "files_changed": [
      "services/payments/refund_service.py"
    ]
  },
  {
    "pr_id": "PR-103",
    "author": "dev_d",
    "created_at": "2026-02-04T11:00:00Z",
    "merged_at": "2026-02-05T16:45:00Z",
    "files_changed": [
      "services/auth/login_service.py"
    ]
  },
  {
    "pr_id": "PR-104",
    "author": "dev_e",
    "created_at": "2026-02-05T08:40:00Z",
    "merged_at": "2026-02-05T12:30:00Z",
    "files_changed": [
      "services/search/query_engine.py"
    ]
  }
]