The body is lean and operational, assuming Claude's competence — it adds only Vizro-specific gotchas and exact commands rather than explaining what dashboards or libraries are; the repeated terminal-warning guidance is intentional emphasis on a process-killing mistake, not concept padding.

Provides copy-paste-ready commands (e.g. `uv run ./scripts/get_model_json_schema.py <model_name> ...`, `uv run ./scripts/validate_colors.py .`) and concrete patterns (`vm.AgGrid` with `figure=dash_ag_grid(...)`, `from vizro.themes import palettes, colors`); not 2 because guidance is fully executable rather than pseudocode.

A clear two-step Build→Test sequence with explicit validation checkpoints (Validation Checklist, validate_colors/validate_aggregation scripts, browser-test walk, 'Done When' criteria) and a fix→restart→re-walk feedback loop; not 2 because validation steps and error-recovery loops are explicit.

SKILL.md is an overview that delegates detail to one-level-deep, well-signaled references (data_management.md, custom_charts_guide.md, example_app.py, example_ag_grid.py, scripts), summarized in a 'Reference Files' table with a 'When to Load' column; all referenced paths verified to exist.

Lists three concrete actions — 'build, implement, and test Vizro dashboards' — naming the domain and specific operations rather than vague language; not below 3 because multiple concrete actions are present.

Clearly states what it does (build/implement/test Vizro dashboards) and when to activate via an explicit 'Activate when...' clause; not 2 because both 'what' and 'when' are explicitly present with trigger guidance.

Natural user phrases are explicitly quoted — 'create a working app', "just build it", 'has data ready for implementation' — the kind of language a user would actually say; not below 3 because coverage of natural terms is strong.

Scoped to 'Vizro dashboards (Phase 2)' and explicitly distinguished from the sibling 'dashboard-design skill (Phase 1)', giving it a clear niche unlikely to trigger for the wrong skill.