**Overall Verdict:** Strong Accept — This is a complete, professionally grounded reconstruction task with coherent contracts, usable evidence, and objective evaluation.

**Completeness Check:**

- Instruction: Complete — Explicit identity, scope, cancellation, diversion, null, clock, interval, and reconciliation rules define all five deliverables.
- Inputs: Complete — Both frozen subsets were verified against the preserved monthly archives; all 240,260 selected records retain their original cell values and source ordinals.
- Toolchain: Complete — Standard open-source dependencies support an offline, single-machine workflow. Submitted Windows timings support feasibility; Linux execution is not claimed.
- Reference output: Complete — All five artifacts are present. Independently recalculated carrier metrics, 22 interval events, 12 comparisons, and summary counts match the references.
- Rubric: Complete — Visible scoring weights, tolerances, rare-record coverage, structural failures, and cross-artifact checks align with the inspected scorer.

**File and Task Reachability:**

Attachments: reachable. Task: reachable.

Inspected `solver_inputs.zip` and `evaluator_bundle.zip`, including both embedded PREZIP archives, `marketing_flights.csv`, `reporting_flights.csv`, `protocol.md`, `output_contract.json`, manifests, field dictionaries, report transcriptions, all five reference outputs, evaluator source, and validation evidence. Archive integrity, declared sizes, and frozen member hashes passed. The solver archive contains no protected reference outputs or implementation.

Parquet inspection covered its 240,260-row schema, metadata, and representative decoded pages, not every cell. Uploaded programs were not executed; submitted validation reports were inspected rather than rerun. The original ATCR PDF is absent, as disclosed, and external provenance was not independently rechecked.

The completion path is to provision dependencies, reconstruct the five artifacts from solver-visible inputs, and evaluate them against the protected reference using the documented scorer.

License keys, accounts, tokens, and other credentials are not required from the contributor. Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.

**Special Screening:**

None. Evidence supports unchanged source observations and newly authored specifications, not materially AI-fabricated inputs, a canonical public benchmark, or deliberately injected core defects. Public comparator cells are explicitly distinguished from protected reconstructed answers.

**Recommended Changes:**

The submission handles population differences, unmatched records, release uncertainty, and legal limitations carefully. No changes are required.