Imported from w20labs/pipeline (AGENTS.md). Install upstream with npx skills add w20labs/pipeline. Copyright stays with the author.

Rules for the implementer

Pipeline is built one step at a time from PLAN.md: one agent implements a step, a second agent reviews it. These are the rules for the implementing agent.

• Implement only the current step. Write ideas for later in docs/ideas.md instead of building them.
• Touch only the files listed under "Files", plus tests and fixtures for them. If another file must change, say which and why in the summary.
• Size limit: if the diff grows past about 400 changed lines (excluding lockfiles, fixtures, and generated files), stop and propose how to split the step instead of continuing.
• Every step ends with pnpm lint && pnpm test passing. pnpm lint type-checks test files too, so a test must compile under the same strict settings as the code it exercises; put new tests under a package's src/ or test/ or nothing will check them.
• No new dependency without naming it in the summary with one line of justification.
• Never commit. Stop when finished and summarize what changed and how to verify it.

A step is done only when the reviewer answers VERDICT: APPROVE. The reviewer does not modify code; it reports findings with file:line references, most severe first, and runs every command in the step's "Done when" list.