placing-product-frontend-code
Decide which tree a frontend file belongs in — `products/<name>/frontend/` or `frontend/src/scenes/<name>/` — and explain why the boundary is real rather than stylistic. Use when adding a new scene, component, or logic file for a product; when creating a new directory under `frontend/src/scenes/`; when a product has UI in both trees and you need to know which side to extend; or when moving a scene into its product. Covers the merge-queue lane cost of the split, the measurement showing a dependency graph cannot substitute for the path signal, and a report script that shows how far each product's move has gone.
SKILL.md
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