Prototype

You own the design decision, not the code. The prototype is a throwaway instrument — the real build follows afterward. This is the one place the usual bars invert: speed over polish, code quality does not matter, no planning. The rigor is in picking the right design cheaply.

Repo layer first. Read the repo's AGENTS.md/CLAUDE.md and, if it exists, the overlay .agents/bento/bento-prototype.md at the repo root; follow it under the overlay rules.

Steps (paste as todos)