evanflow-prd（伊万弗洛珠三角）

EvanFlow: PRD

Vocabulary

See evanflow meta-skill.

When to Use

• Substantial new feature requiring stakeholder alignment
• Pre-sprint scoping
• A spec exists in conversation but needs structured form for the team

SKIP when: the work is small enough for evanflow-brainstorming → evanflow-writing-plans directly.

The Flow

1. Read Context (don't interview)

The skill name is "to-prd" not "interview-to-prd" for a reason. Synthesize from what's already known:

• CLAUDE.md for project conventions
• CONTEXT.md for domain language
• docs/adr/ for prior architectural decisions
• Recent commits and docs/stakeholder/*.md for in-flight initiatives
• The conversation up to this point

Only ask the user for things you genuinely cannot derive.

2. Identify Major Modules

Sketch the modules to build/modify, emphasizing deep modules (small interface, complex internals). Apply the deletion test to each — does this module earn its existence?

3. Validate Architecture

Confirm with the user:

• The module list (correct, exhaustive, no gaps)
• Which components require test coverage (you can't test everything)
• Which existing patterns to follow vs. diverge from

4. Write the PRD

Default location: docs/specs/YYYY-MM-DD-<feature>.md. Use the user's preferred path if they have one.

Structure:

# [Feature Name] PRD

## Problem

One paragraph: what's broken or missing in the current product, and who feels the pain.

## Solution

One paragraph: the shape of the answer, named in domain language.

## User stories

- As a <role>, I can <action> so that <outcome>.
- (List 5-15)

## Architecture

Module list with one-line responsibility per module. Reference existing files where relevant. No code paths.

## Testing strategy

What behaviors must be covered. Integration vs. unit. Real services vs. test doubles.

## Scope

In:
- ...

Out:
- ...

## Open questions

Things needing decision before the plan can be written.

5. Optional: Create GitHub Issue

If the user wants the PRD as a GitHub issue, ASK before running gh issue create. Never auto-file.

Hard Rules

• Synthesize, don't interrogate. Ask only for genuinely unknown things.
• Domain language from CONTEXT.md. Use canonical terms.
• External behavior over implementation. Testing strategy describes *what* to verify, not *how*.
• Asks before gh issue create. No auto-file.
• Never auto-commit. PRD doc gets staged; user confirms before commit.

Hand-offs

• PRD approved, ready for plan → evanflow-writing-plans. If the PRD's module list shows 3+ independent components sharing a contract, the plan should be structured for evanflow-coder-overseer.
• New domain terms emerged → evanflow-glossary to update CONTEXT.md
• PRD reveals architecture concerns → evanflow-improve-architecture first
• PRD's interface design needs more thought → evanflow-design-interface before plan