{
  "case_id": "complex-progress",
  "turns": [
    {
      "observation": {
        "stage": "implementation",
        "deliverable_state": "in_progress",
        "dependency_state": "none",
        "dependency_required_for_next_stage": false,
        "semantic_state": {
          "hypothesis": "export path re-reads the source archive per row",
          "progress_marker": "reproduced slow export under load",
          "unmet_criterion": "export completes within the accepted latency budget"
        },
        "volatile": {
          "observed_at": "2026-09-18T00:00:00Z",
          "request_id": "req-1"
        }
      },
      "action": {
        "kind": "work",
        "target": "profile export path"
      }
    },
    {
      "observation": {
        "stage": "implementation",
        "deliverable_state": "in_progress",
        "dependency_state": "none",
        "dependency_required_for_next_stage": false,
        "semantic_state": {
          "hypothesis": "missing index forces a scan on the tenant partition",
          "progress_marker": "identified hot loop in row materialization",
          "unmet_criterion": "export completes within the accepted latency budget"
        },
        "volatile": {
          "observed_at": "2026-09-18T00:05:00Z",
          "request_id": "req-2"
        }
      },
      "action": {
        "kind": "work",
        "target": "add covering index and re-measure"
      }
    },
    {
      "observation": {
        "stage": "implementation",
        "deliverable_state": "in_progress",
        "dependency_state": "none",
        "dependency_required_for_next_stage": false,
        "semantic_state": {
          "hypothesis": "covering index resolves the scan",
          "progress_marker": "benchmark p95 900ms to 140ms",
          "unmet_criterion": "export completes within the accepted latency budget"
        },
        "volatile": {
          "observed_at": "2026-09-18T00:12:00Z",
          "request_id": "req-3"
        }
      },
      "action": {
        "kind": "work",
        "target": "verify benchmark at load"
      }
    },
    {
      "observation": {
        "stage": "verification",
        "deliverable_state": "accepted",
        "dependency_state": "none",
        "dependency_required_for_next_stage": false,
        "semantic_state": {
          "hypothesis": "confirmed",
          "progress_marker": "benchmark accepted at delivery boundary",
          "unmet_criterion": null
        },
        "volatile": {
          "observed_at": "2026-09-18T00:30:00Z",
          "request_id": "req-4"
        }
      },
      "action": {
        "kind": "deliver",
        "target": "final_delivery"
      }
    }
  ]
}