Add Python Package

The only skill that knows python -m skore_skills env add. Callers must not splice manager commands themselves.

Human-facing prose

Details: setup-workspace references/human_facing_prose.md. Run python -m skore_skills … yourself. In questions and replies, show the manager command from print-only stdout (pixi add …, uv add …, pip install …) or a plain-language intent. Never paste python -m skore_skills, env add, env add-skore, or --feature / --group as something the user should run or choose. Never paste env graphviz either; quote that command's instructions or printed manager line.

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