Conciseness

Most content is novel methodology-specific rules that earn their tokens, but the ~590-line body includes unnecessary repetition and padding: the fit-check binary rule is stated twice ('Fit check is BINARY' and again in 'Flagged Unknown'), the spike and breadboarding sections restate overlapping points, and sections like 'Why This Matters' add justification prose. This matches 'Mostly efficient but includes some unnecessary explanation or could be tightened' rather than 4, where such instances would be minor.

Actionability

For an instruction-only skill the guidance is fully concrete and copy-paste ready: exact markdown templates for fit checks, shape tables, spike files, and source capture, plus explicit good/bad examples ('E: Modify CUR in place...' vs 'E: The solution') and precise rules (chunking at 9 top-level requirements, 🟡 change markers). Per the rubric's code_vs_instruction note, absence of code is not penalized when guidance is this actionable.

Workflow Clarity

The Phases section, phase-transition criteria, and Possible Actions list give a clear sequence, and there are genuine feedback loops (missing requirement → new R → re-run fit check; spike → then decide). It falls short of 5 because 'Possible Actions' explicitly states 'These can happen in any order' without a canonical checklist ordering, and document-sync steps rely on the tooling hook rather than an explicit validation step. It sits above 3, where checkpoints would be missing or implicit.

Progressive Disclosure

The body has good section headers and internal navigation, but no bundle files exist (references/, scripts/, assets/ are absent) and clearly separable material — spike structure, breadboarding details, slicing, and the worked example — is inlined in a single ~590-line file. This matches 'Some structure but could be better organized; content that should be separate is inline' rather than 2, because headers make navigation easy and the only external pointer (the /breadboarding skill) is clearly signaled.

Specificity

The description names the domain and two concrete actions — 'iterating on problem definition (requirements)' and 'solution options (shapes)' — but these are the methodology's own abstractions rather than concrete capabilities, and coverage is not comprehensive. It matches the anchor 'Names domain and 1-2 concrete actions, but not comprehensive'; a 4 would require several specific actions with only minor gaps, which the single generic sentence does not provide.

Completeness

Both parts are present: 'what' is 'iterating on problem definition (requirements) and solution options (shapes)' and 'when' is explicit ('Use this methodology when collaboratively shaping a solution with the user'). The trigger clause is present but somewhat circular and could be more specific, matching 'Has both what and when; when could be more explicit or specific'; it falls short of 5, which demands concrete trigger phrases like the PDF example.

Trigger Term Quality

It carries some relevant natural terms ('shaping', 'requirements', 'solution options') but misses common variations a user would say, such as 'explore options', 'problem definition', 'design', or 'proposal'. This fits 'Some relevant keywords but missing common variations or synonyms' rather than 4, where keyword coverage would be good with only a few natural terms missing.

Distinctiveness Conflict Risk

'Shaping' plus the requirements/solution-options framing carves a fairly distinct niche with low conflict risk against unrelated skills, matching 'Mostly distinct; minor overlap risk'. It is not a 5 because the trigger 'collaboratively shaping a solution' could still overlap with general planning, design, or requirements-gathering skills.