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            "amendment_2_probe_0_strict_noul_answer": true,
            "amendment_2_probe_1_request_journal": true,
            "amendment_2_probe_1_frozen_identity": true,
            "amendment_2_probe_1_exact_payload": true,
            "amendment_2_probe_1_billing_readback": true,
            "amendment_2_probe_1_valid_observed_zero_reasoning": true,
            "amendment_2_probe_1_strict_noul_answer": true,
            "amendment_2_probe_billing_complete_or_unknown": true,
            "amendment_2_probe_budget_retained": true,
            "amendment_2_earlier_probe_budget_retained": true,
            "amendment_2_only_historical_circuit_rearmed": true,
            "amendment_2_original_unknown_guard_retained": true,
            "amendment_2_paced_first_unattempted_sequence": true,
            "amendment_2_paced_window_bounds": true,
            "amendment_2_paced_amendment_fields": true,
            "amendment_2_paced_run_metadata": true,
            "amendment_2_paced_new_quality_row_fields": true,
            "amendment_2_paced_runtime_ceiling": true,
            "amendment_2_paced_rows_and_dispatches_match": true,
            "amendment_2_observed_dispatch_spacing_at_least_0_25s": true,
            "quality_budget_excludes_all_linked_probe_charges": true
          },
          "issues": [],
          "amendments": [
            {
              "id": "20261002T164150404672Z",
              "status": "continuation_stopped",
              "continuation_file": "continuation.py",
              "original_attempts": 3019,
              "original_invalid": 47,
              "recovery_calls": 2,
              "recovery_budget_accounted_usd": 6.534e-05,
              "paced_evidence": null
            },
            {
              "id": "20261002T165108634637Z",
              "status": "completed",
              "continuation_file": "continuation_paced.py",
              "original_attempts": 3651,
              "original_invalid": 71,
              "recovery_calls": 2,
              "recovery_budget_accounted_usd": 6.581e-05,
              "paced_evidence": {
                "new_quality_rows": 1134,
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            "Successful serial probes establish momentary service response; they do not establish sustained provider capacity. Pacing checks compare declared executor limits and recorded dispatch spacing; they do not measure upstream internal concurrency. Original invalid quality outcomes remain in their original denominators."
          ]
        }
      },
      {
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        "checks": {
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          "unique_frozen_case_ids": true,
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          "frozen_source_code_hashes": true,
          "plan_count": true,
          "plan_sha256": true,
          "seeded_plan_reproduces": true,
          "unique_attempt_identities": true,
          "every_record_matches_contract_and_source": true,
          "complete_quality_cross_product": true,
          "attempts.jsonl_unique_dispatches": true,
          "attempts.jsonl_frozen_request_hashes": true,
          "saved_exact_requests_hash": true,
          "saved_responses_sha256": true,
          "saved_attempts_sha256": true,
          "metadata_billing_complete_or_unknown": true,
          "named_source_hashes_match": true,
          "current_code_matches_saved_snapshot": true
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        "issue_count": 0,
        "run_dir": "benchmark/multimodel/runs/quality-20261002T160544592288Z",
        "raw_sha256": "9b949a90dcc900c2228ef035987ae306a858c138eab153eb7cf4bb6056357a22",
        "case_sha256": "e271790b2ee38a1c231e312fa15ece2a56c95f6bf705294f1637d43b2edcf256",
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            "visible_reasoning_calls": 0,
            "cache_read_counter_observed": 4785,
            "cache_write_counter_observed": 4785
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          "Hy4 Preview": {
            "valid_calls": 4781,
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              "observed": 4781,
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            "reasoning_counter_observed": 4781,
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        },
        "exact_payload_factory_supplied": true,
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        "limitations": [
          "Missing reasoning/cache counters are unobserved, not verified zero. Without factories, quality/timing source content and contracts are checked, but complete payload and seeded plan regeneration are not established."
        ]
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        "seeded_plan_reproduces": true,
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        "attempts.jsonl_unique_dispatches": true,
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        "named_source_hashes_match": true,
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          "reasoning_counter_observed": 0,
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          "reasoning_tokens_reported_total": null,
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        "Qwen3.8 Flash": {
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          "reasoning_counter_observed": 186,
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        "MiMo V2.6 Flash": {
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          "reasoning_counter_observed": 186,
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        "DeepSeek V4.1 Flash": {
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          "reasoning_counter_observed": 186,
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          "cache_write_counter_observed": 186
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      "seeded_plan_factory_supplied": true,
      "limitations": [
        "Missing reasoning/cache counters are unobserved, not verified zero. Without factories, quality/timing source content and contracts are checked, but complete payload and seeded plan regeneration are not established."
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    },
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          "frozen_rulebook_bytes": true,
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          "Provider-reported usage establishes recorded billing, not an independently reconciled invoice.",
          "Four sequential blocks are one measurement session, not independent days or deployments."
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        "run_dir": "benchmark/multimodel/runs/cache-20261002T175446Z",
        "generated_at_utc": "2026-10-02T18:18:06.469288+00:00"
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    "quality_cross_product_complete": true,
    "models": [
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    ],
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  },
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      "limitations": [
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      "limitations": [
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