**Overall Verdict:** Accept — The submission provides a coherent, reachable CAD reconstruction task with usable evidence and objective evaluation; no material contributor-side gap was identified.

**Completeness Check:**

- Instruction: Complete — Defines the required features, nominal millimetre dimensions, single-solid STEP deliverable, and permitted rigid transformations.
- Inputs: Complete — The readable 1040 × 884 PNG includes a dimensioned front view and sections A-A and B-B.
- Toolchain: Complete — The declared open-source Linux CAD tools provide a viable modeling, STEP export, and evaluation workflow.
- Reference output: Complete — The millimetre-based STEP structurally contains one closed-shell solid with 38 faces; its bounds, recess depths, angle, and radii are consistent with the drawing.
- Rubric: Complete — Evaluators check solid validity, extra geometry, proper rigid alignment, Boolean overlap, and boundary agreement. Full matches receive full credit; the partial evaluator caps incorrect geometry at 3%.

**File and Task Reachability:**

Attachments: `reachable`. Task: `reachable`.

Inspected all seven files: `angled_slot_assembly_fixture.png`, `angled_slot_assembly_fixture_reference.step`, `score_submission_partial.py`, `score_submission.py`, `geometry_compare.py`, `trajectory.json`, and `run.json`. All downloaded sizes match the manifest. The PNG decoded successfully, the STEP entity references resolve, the evaluators are readable source files, and both JSON records parse successfully. No attachment was left uninspected.

The completion path is drawing interpretation, CAD construction, single-solid STEP export, and private-reference evaluation. Attachment roles distinguish solver inputs from reference and evaluation assets; that separation should be preserved. CAD-kernel tooling was unavailable for independent geometric validation, and uploaded evaluators were inspected but not executed. These are review limitations, not established submission defects.

The self-test records a completed full-credit run, which does not substantiate the stated 20–40% difficulty estimate.

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 supports a policy screening label. Public provenance could not be independently checked through an approved search capability.

**Recommended Changes:**

The dimensioned drawing, structurally coherent reference, and detailed geometric evaluators support task readiness. No changes are required. Updating the optional difficulty estimate to reflect the attached full-credit run would improve accuracy.