**Overall Verdict:** Accept — The submission is complete, professionally scoped, objectively scored, and operationally reachable, with public-answer lookup risk that can be mitigated through offline solver execution.

**Completeness Check:**
- Instruction: Complete — The 50-case workflow, prohibited shortcuts, required R interface, outputs, and deterministic reconstruction goal are explicit.
- Inputs: Complete — All cases include synthetic references and methods context; 68 input instances are checksum-pinned, with 15 bundled and 53 retrieved through a verified materialization process.
- Toolchain: Complete — R, Python, macOS architecture/version, rendering devices, and principal package versions are documented; exact scoring requires the stated pinned environment.
- Reference output: Complete — All 50 cases have gold PNGs, canonical CSV data, provenance manifests, and evaluator-only reference code.
- Rubric: Complete — The scorer implements 50 binary code points and 50 decoded-RGBA image points, with positive and empty controls reporting 100/100 and 0/100.

**File and Task Reachability:**
Attachment classification: reachable. Task classification: reachable. I inspected `01_ScientificFigureTransfer_Open50_Participant_Input.zip`, `02_ScientificFigureTransfer_Open50_Hidden_Gold_and_Evaluator.zip`, and `03_ScientificFigureTransfer_Open50_GPT55_Blind_SelfTest_Evidence.zip`. All three are valid, unencrypted ZIP archives without traversal paths or links; their internal file counts, sizes, and SHA-256 manifests are consistent. Inspection covered the task and output contracts, source and article manifests, materialization and evaluator-preparation code as inert text, case inventories, methods PDFs, representative CSV/XLSX schemas, PNG dimensions and visual samples, gold manifests, scorer logic, runtime records, validation reports, and blind-run evidence. Uploaded programs were not executed, serialized R data were signature-checked rather than deserialized, and the 53 source-fetched instances were not independently retrieved under the evidence boundary. End to end, setup materializes and verifies public inputs, the solver produces four artifacts for each case, evaluator setup stages identical inputs, and the sealed scorer reruns each R program and compares canonical data and decoded pixels. 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:**
`public_benchmark` — The source articles, study data, repository provenance, and some historical analysis filenames are publicly identifiable, so external lookup could expose substantial parts of the target procedure. Materialize inputs before the solver starts, then disable external network access and keep evaluator assets sealed.

**Recommended Changes:**
The submission provides coherent contracts, strong provenance records, complete gold coverage, and meaningful controls. No contributor changes are required. Administrators should enforce offline solver execution after input materialization and use the pinned macOS rendering environment for official scoring.