Conciseness

Every section is a command plus an expected-outcome comment ('# must be 1,400+ passed, 0 failed', '# must print VERDICT: PASS', '# must be 7/7 PASS') with no explanation of concepts Claude already knows. The 'QEMU firmware CI' section is a dense run-on fact dump ('11-job workflow ... needs source $IDF_PATH/export.sh before pip ... WARNs (no real WiFi) are treated as OK in CI') that could be tightened, which matches the 'efficient; minor instances that could be trimmed' anchor rather than the fully lean 5.

Actionability

All guidance is copy-paste executable — 'cargo test --workspace --no-default-features', 'python archive/v1/data/proof/verify.py', 'bash scripts/generate-witness-bundle.sh', 'bash VERIFY.sh' — and it even covers the error-recovery path ('--generate-hash' then re-run for a hash mismatch after a numpy/scipy bump). Commands cover the common cases end to end.

Workflow Clarity

Sections 1–5 give a clear sequence with an explicit validation checkpoint at each step (expected test counts, VERDICT: PASS, 7/7 PASS), a feedback loop for the one realistic failure mode, and a 12-item pre-merge checklist for the complex process. This matches the top anchor: explicit validation, error-recovery loops, and a checklist.

Progressive Disclosure

Sections are well organized and pointers are one level deep into real repo files ('docs/WITNESS-LOG-028.md', 'CLAUDE.md → "Validation & Witness Verification"'). However the 12-item pre-merge checklist and the QEMU CI notes are inlined in full — exactly the detail that could live in a separate reference file — keeping this at 'good structure; minor organization gaps' rather than the cleanly split top anchor.

Specificity

The description enumerates multiple concrete capabilities — 'full Rust workspace tests', 'deterministic Python pipeline proof (SHA-256 Trust Kill Switch)', 'firmware hash manifest', and the 'ADR-028 witness bundle with one-command self-verification' — giving comprehensive, action-level coverage rather than a vague domain claim. It is not 4 because the action list covers the skill's whole surface with only minor gaps, matching the 'multiple specific concrete actions; comprehensive coverage' anchor.

Completeness

'Verify a RuView build — full Rust workspace tests, ... witness bundle with one-command self-verification' explicitly states what the skill does, and 'Use after any significant change, before merging a PR, or to produce an attestation bundle for a recipient' explicitly states when, with three concrete trigger scenarios. Both halves are present and explicit, matching the top anchor.

Trigger Term Quality

Natural phrases like 'Verify a RuView build', 'before merging a PR', 'after any significant change', and 'produce an attestation bundle' would plausibly appear in a user request, and project-specific terms (RuView, ADR-028, SHA-256) are appropriate for a repo skill. It is not 5 because common variations users would actually say — e.g. 'run the tests', 'pre-merge check', 'regression' — are missing, and not 3 because keyword coverage is strong rather than partial.

Distinctiveness Conflict Risk

The description occupies a clear niche — verification of one specific project's build with its own artifacts (RuView, ADR-028, SHA-256 Trust Kill Switch) — so triggers like 'verify the RuView build' or 'before merging' in this repo are unlikely to collide with unrelated skills.