Implement

Turn one scoped task into a clean, tested, reviewable diff.

Steps

1. Confirm scope. Re-read the acceptance criteria. State to yourself exactly what done means. If it's ambiguous or bigger than it looked, stop and ask the coordinator before writing code.
2. Find your bearings. Locate the code you'll touch and a working example of the pattern nearby. Match what's there.
3. Write the failing test first. Capture the desired behavior in a test. Run it; watch it fail for the right reason.
4. Make it pass. Write the smallest code that satisfies the test. No extra features, no speculative abstraction.
5. Refactor green. Remove duplication, improve names, keep the test passing.
6. Run the full suite. Not just your test - the whole thing must be green and the output clean.
7. Self-review the diff. Read it as a reviewer would. Is it minimal? Focused? Free of debug noise and dead code? Does it match surrounding style?
8. Commit and hand off. Small commits with clear messages. Fill in the handoff: what changed, why, how you verified, what to scrutinize.

Guardrails

• One task at a time; file unrelated bugs instead of folding them in.
• No mocks in end-to-end tests; real data, real APIs.
• Don't rewrite working code without explicit permission.
• Never skip or disable a pre-commit hook.
• If a change touches identity, auth, customer data, or a deploy, flag it for approval before proceeding.