Conciseness

The body is dense and procedural with no explanations of concepts Claude already knows, but the ASCII pipeline diagram restates the Workflow section and the 'No sketch strategy found' halt message is duplicated between Prerequisites and Error Handling. Minor trimmable redundancy places it at anchor 4 rather than the every-token-earns-its-place anchor 5.

Actionability

Fully executable guidance: a copy-paste-ready sketch-manifest.json schema, a verbatim builder-agent context template with delimiters, exact user-facing prompts ('What would you like to change?'), and concrete per-paradigm threshold rules with examples. Specific examples cover the common cases, matching anchor 5 for an instruction-orchestration skill.

Workflow Clarity

Eight clearly sequenced steps with explicit validation checkpoints (verify the output directory in Step 6, threshold decision in Step 3, user confirmation of component mapping before promote/keep) and feedback loops (re-spawn the builder with error context, iterate-until-satisfied loop). Destructive cleanup requires user confirmation, so no cap applies — matches anchor 5.

Progressive Disclosure

References are well-signaled ('> Read ...' directives at exact steps) and verified one level deep — sketch-setup.md, the five paradigm files, and iteration-guide.md all exist and none nest further. Minor gap: paradigm-specific threshold lists (Step 3) and the full manifest schema are inlined in the main body where they could live in the paradigm references, matching anchor 4's 'minor organization gaps' rather than anchor 5's fully appropriate split.

Specificity

The 'what' is a single concrete action — 'Creates real, runnable artifacts using the project's actual framework and conventions, rendered in a dedicated sketch namespace' — which names the domain and one action but omits iteration, promotion, and cleanup. Matches anchor 3 (1-2 concrete actions, not comprehensive); anchor 4 requires several specific actions listed.

Completeness

Explicitly answers 'when' ('This skill should be used when the user says... or wants to see a working interface preview... before committing to full implementation') with concrete trigger phrases, and 'what' ('Creates real, runnable artifacts using the project's actual framework and conventions'). Both are explicit, matching anchor 5.

Trigger Term Quality

Roughly 18 natural trigger phrases with synonym coverage ('sketch', 'preview this', 'mock this up', 'prototype this UI', 'sketch the TUI', 'what will the CLI look like', 'mock up the terminal output') — users would naturally say these. Comprehensive coverage; no common variation is missing, so anchor 4 does not fit better.

Distinctiveness Conflict Risk

A clear niche (pre-implementation interface preview in a dedicated sketch namespace) with distinctive phrases, but generic triggers like 'preview this' and 'show me what this looks like' create minor overlap risk with other preview/prototype-type skills. Mostly distinct with minor overlap risk, matching anchor 4 rather than the minimal-conflict anchor 5.