# Phase Quick-Reference Checklist

## Phase 1 — Requirements
- [ ] Problem statement written (1–3 sentences)
- [ ] Functional requirements listed (FR-N format)
- [ ] Non-functional requirements listed
- [ ] Constraints documented
- [ ] Out-of-scope items explicit
- [ ] Open questions listed

## Phase 2 — Design
- [ ] Architecture style chosen with rationale
- [ ] Component diagram (PlantUML)
- [ ] Data model diagram (PlantUML)
- [ ] External dependencies table
- [ ] ADRs written (decision + rationale)
- [ ] Risks table with mitigations

## Phase 3 — Tasks
- [ ] Work grouped into milestones
- [ ] Each task: estimable, independent, linked to FR
- [ ] Dependencies identified
- [ ] Critical path flagged
- [ ] Parallelizable tasks noted

## Phase 4 — Implementation Plan
- [ ] Setup checklist written
- [ ] Tasks ordered by dependency + priority
- [ ] Each task has acceptance criteria
- [ ] Each task has implementation notes
- [ ] Each task has Definition of Done
- [ ] "Day 1" first task identified