docs-feature-design

name	docs-feature-design
description	Maintain feature docs that explain user-visible behavior, goals, flows, and business rules without implementation detail. Use when feature scope, user workflows, or product behavior changes.

Docs Feature Design

Maintain docs that explain what a feature does and why it matters, not how it is implemented. A single component or service may support multiple features, so keep technical design out of feature docs and link it separately when needed.

Resource Map

• Use assets/doc-starters/feature-doc.md when creating or substantially rewriting a doc in docs/features/.
• Read references/feature-example.md when you need a worked example of the expected behavior-focused depth.

When to Use

• New feature definition or major feature revision
• Changes to user-visible behavior, primary flows, goals, rules, or constraints
• Updates to product scope, supported actors, or expected outcomes
• Feature docs that should stay understandable without reading implementation details

Do Not Use

• API, schema, runtime, deployment, or internal control-flow detail that belongs in docs-components-design
• System topology or domain architecture that belongs in docs-architecture

Workflow

1. Identify the feature, audience, and existing doc path.

• Default location is docs/features/
• Reuse an existing feature doc when one already exists

2. Capture behavior-level content only.

• User problem and goals
• Primary actors and entry points
• Main flows, states, and business rules
• User-visible edge cases, constraints, and outcomes
• Non-Goals, Audience / Actors, and Open Questions are optional — omit them when they don't add value for the feature
• "User-Facing Behavior" (flat bullet list) is a valid simpler alternative to formal numbered Primary Flows for straightforward features

3. Move technical detail out.

• If the draft starts describing APIs, schema, queues, retries, deployment, or internal implementation, link or create the relevant component design doc instead

4. Keep cross-links aligned.

• Link to relevant architecture and component docs
• Do not duplicate their content inside the feature doc

5. Verify the doc against the current product behavior.

• The described flows and rules match what the feature actually does
• The audience can understand the feature without technical context

Writing Rules

• Speak about what the feature does, not how it is implemented
• Multiple features can map to one component or service; keep the feature doc centered on one user-facing capability
• Use product language, user states, and business rules
• Do not include API sections, schema sections, deployment notes, or implementation plans

Quality Checklist

• The doc explains the user problem, goals, and primary flows
• Business rules and user-visible edge cases are clear
• Technical implementation detail is absent
• Links to relevant component or architecture docs are present when needed
• A non-implementer could understand the feature from the doc alone