PRD Phase Generator

Extract features from a Vision PRD into a detailed Phase PRD with requirements, priorities, and traceability.

Inputs Required

1. Vision PRD — Annotated with [F-nnn] tags (use prd-vision-annotator first if missing)
2. Coverage Index — To identify which features are Planned vs already assigned

Capacity Defaults

Per phase, target approximately:

• 10 features (F-nnn)
• 50 functional requirements (R-nnnn)
• 100 acceptance criteria (AC-nnnn)

Adjust based on user input about team size or timeline.

Workflow

1. Select features — Choose ~10 Planned features from Coverage Index
2. Decompose requirements — Extract R-nnnn from each feature's vision prose
3. Assign priorities — Must / Should / Could for each requirement
4. Generate Phase PRD — Using template in assets/phase-prd-template.md
5. Update Coverage Index — Mark selected features as In Progress

Step 1: Feature Selection

Review Planned features in Coverage Index. Select based on:

• Dependencies — Foundation features before dependent ones
• Cohesion — Group related features (e.g., all calendar views together)
• Business priority — Per user input or stakeholder notes
• Complexity — Balance large and small features

Present selection to user for approval before proceeding.

Step 2: Requirement Decomposition

For each selected feature, read the Vision PRD section and extract atomic requirements.

Vision prose:

User selects quantity, enters name/email, receives confirmation email immediately.

Becomes:

### R-0141: RSVP Quantity Selection
**Parent:** F-014
**Priority:** Must

Users shall select the number of seats when submitting an RSVP.

### R-0142: RSVP Data Collection  
**Parent:** F-014
**Priority:** Must

The RSVP form shall collect attendee name and email address.

### R-0143: RSVP Confirmation Email
**Parent:** F-014
**Priority:** Must

The system shall send a confirmation email upon RSVP submission.

Decomposition guidelines:

• One behavior per requirement
• Use "shall" for required behaviors
• Keep requirements testable and atomic
• ~5 requirements per feature is typical

Step 3: Priority Assignment

Aim for roughly 60% Must, 30% Should, 10% Could.

Step 4: Generate Phase PRD

Use template at assets/phase-prd-template.md. Structure:

1. Phase Overview (goals, scope, timeline)
2. Features in Scope (list with F-nnn)
3. Functional Requirements (R-nnnn grouped by feature)
4. Quality Requirements section (placeholder — populated by prd-qa-enricher)
5. Acceptance Criteria section (placeholder — populated by prd-qa-enricher)

Requirement Numbering

Continue R-nnnn sequence across phases:

• Phase I: R-0001 → R-0089
• Phase II: R-0090 → R-0179
• Phase III: R-0180 → R-0269

Check previous Phase PRDs to find the last used R-nnnn.

References

• references/naming-conventions.md — ID formats and rules
• references/phasing-process.md — Detailed extraction workflow