**Overall Verdict:** Borderline Accept — the task and reference package are technically substantial and coherent, but partial-success grading needs one small clarification.

**Completeness Check:**

- Instruction: Complete — defines the crystallographic, mechanical, manufacturing, editing, and delivery requirements.
- Inputs: Complete — readable structure records, CIFs, and scientific results identify the selected 28-site unit cell unambiguously.
- Toolchain: Complete — FreeCAD and PrusaSlicer provide a viable, freely obtainable Linux workflow without required external services.
- Reference output: Complete — both size assemblies, manufacturing exports, BOMs, fabrication drawings, assembly/extraction images, instructions, and eight native slicer plates are supplied. Static checks confirm 504 correctly labelled sites, 18 modules, and 42 pins per size.
- Rubric: Unclear — full-pass gates are precise, but partial-success grading is undefined.

**File and Task Reachability:**

Attachments: `reachable`. Task: `conditionally_reachable`, pending the grading clarification.

Inspected `task_01_inputs.zip`, `task_01_reference.zip`, and `task_01_evidence.zip`, including nested structure/workbook containers, both native CAD documents, STEP/STL exports, all eight 3MF projects, AMF files, BOMs, drawings, instructions, validation reports, and screenshots. Downloaded sizes match the manifest; archive integrity checks found no corruption, encryption, or unsafe members.

Independent static checks found coordinate agreement well within 0.05 mm under the declared periodic-origin convention. Plate inventories total 18 modules and 42 pins at each size, retain the declared printer settings, and fit the build envelope. The stated extraction argument uses disjoint layer intervals preserved during translation.

Completion and evaluation can proceed on one suitable workstation through CAD construction, recomputation, export, slicing, and geometric comparison. Native recomputation, CAD-kernel solid validity, and intersection checks were not rerun because the applications were unavailable to the reviewer; submitted validation claims remain unconfirmed in those areas. Detailed scientific inspection focused on the selected structure. The failed self-test artifacts themselves were not supplied, so its reported outcome could not be independently reproduced.

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. No affirmative evidence establishes a screening violation. Public task or solution availability was not independently checked because approved search was unavailable.

**Recommended Changes:**

The supplied coordinates, editable reference assemblies, and matching slicer inventories provide a strong technical foundation.

- Define criterion-level partial-success grading and identify which failures mandate an overall fail. Distinguish a usable but incomplete manufacturing handoff from empty or unverifiable artifacts.