Ship one vertical feature slice
Implement a settled behavior through the existing architecture with a short feedback loop and controlled scope.
Use when
A specification exists and you want progress that can be reviewed and shipped independently.
Outcome
A useful end-to-end behavior that is integrated, checked, and ready for manual product verification.
The sequence
4 deliberate steps
- 01Open prompt
Choose the tracer bullet
Select the smallest slice that crosses every required system layer.
- 02Open prompt
Find the local conventions
Understand nearby ownership, naming, state, errors, tests, and styling before editing.
- 03Open prompt
Implement with a tight loop
Build only the agreed behavior and verify it at the most stable seam.
- 04Open prompt
Review before handoff
Check intent, forgotten states, integration points, and accidental scope.