wtf.design-feature（wtf 设计特点）

Design Feature

Pick up a Feature as a designer and produce a holistic design covering the full user journey before tasks are cut. Core value: maps every user story to screens and states, identifies shared components across the feature, and writes a complete Design Handoff back into the Feature issue — so wtf.feature-to-tasks can derive better tasks and wtf.design-task inherits feature-level decisions rather than reinventing them.

Process

0. GitHub CLI setup

Run steps 1–2 of ../references/gh-setup.md (install check and auth check). Stop if gh is not installed or not authenticated. Extensions are not required for this skill.

Skip this step if invoked from another skill that already ran gh-setup this session.

1. Identify the Feature

If the user provided an issue number in their request, use it directly. Otherwise search for recent open issues with label feature to populate options and call AskUserQuestion with question: "Which Feature are you designing?", header: "Feature", and options pre-filled with 1–2 likely open Feature issue references.

Fetch the Feature and its parent Epic:

gh issue view <feature_number>    # User stories, ACs, Edge Cases, Domain Events
# Extract epic number from Context section, then:
gh issue view <epic_number>       # Goal, Context, Design Artifacts (strategic input)

Extract and hold in context:

• Feature capability name (Actor + verb + object)
• All user stories
• All Acceptance Criteria
• Edge Cases
• Domain Events (emitted/consumed)
• Epic's Design Artifacts (any Figma links or research docs — these are upstream constraints)

2. Lifecycle check

Check whether the feature already has a designed label:

gh issue view <feature_number> --json labels --jq '.labels[].name'

If designed is present, call AskUserQuestion with:

• question: "This Feature already has a designed label. Continuing will overwrite the existing Design Handoff. How would you like to proceed?"
• header: "Already designed"
• options: [{label: "Redesign it", description: "Overwrite the existing Design Handoff with a new one"}, {label: "Exit", description: "Leave the existing design as-is"}]
• Redesign it → continue.
• Exit → exit immediately.

If absent, continue silently.

3. Load the design steering document

Use the Read tool to attempt reading docs/steering/DESIGN.md.

If it exists: keep its content in context. Apply its design principles, tokens, component patterns, and accessibility standards silently throughout this session.

If it does not exist, call AskUserQuestion with:

• question: "docs/steering/DESIGN.md doesn't exist yet. This document captures your design principles, tokens, and component patterns. Would you like to create it now?"
• header: "Design steering doc missing"
• options: [{label: "Create it now", description: "Run steer-design before continuing (recommended)"}, {label: "Skip for this session", description: "Continue without it — design decisions won't reference project standards"}]
• Create it now → follow the wtf.steer-design process, then return here and continue from step 4.
• Skip for this session → continue without it.

4. Explore the design system and codebase

Use the Agent tool with these searches (run in parallel):

• Glob('src/components/**/*', 'src/**/components/**/*', 'components/**/*') — existing UI components; flag any that map to domain objects in this Feature's user stories
• Glob('**/{tokens,theme,variables,design-tokens}.{css,scss,ts,js,json}') — design tokens
• Glob('src/**/*.{stories,story}.{ts,tsx,js,jsx,mdx}') — Storybook stories as pattern references for similar flows
• Grep for figma.com URLs across .md, .mdx files — existing Figma references in related issues or docs

Note which existing components can be reused vs which are new. This feeds step 7.

5. Map the full user journey

For each user story ("As a [Actor], I want [action] so that [outcome]"), derive:

1. Entry point — what triggers this story? (screen, action, event)
2. Happy path screens — ordered list of screens/states the actor moves through
3. Branch states — loading, error, empty, partial data, permission denied
4. Exit point — what confirms the story is complete for the actor?

Also map:

• Cross-story transitions — screens shared between multiple user stories
• Edge case screens — one screen per Edge Case from the Feature issue
• Domain Event surfaces — where in the UI does each emitted Domain Event become visible to the actor?

Produce a journey map as a structured list — do not ask the user, derive from user stories and ACs.

6. Ask about design assets

Call AskUserQuestion with question: "How would you like to handle designs for this feature?", header: "Design assets", and options:

• {label: "I have Figma frames", description: "Provide frame URLs — I'll validate coverage against the full journey map"}
• {label: "Generate designs for me", description: "I'll use Figma MCP to generate frames from the user stories and design system"}
• {label: "Scaffold a brief only", description: "No Figma — produce a text screen inventory and component map"}
• {label: "Partial — some screens designed", description: "Provide available frames; remaining screens go to generate or scaffold"}

Path A — Human provides frames: Collect the top-level Figma file URL plus individual frame URLs. For each screen in the journey map (step 5), check whether a frame covers it. Present a coverage matrix: screen → frame URL (or ⚠ gap). If gaps exist, call AskUserQuestion asking whether to generate missing frames (Path B) or leave them as pending.

Also validate provided frames against spec:

• Every user story has at least one matching frame
• Every edge case from the Feature issue has a matching error/boundary state frame
• Every Domain Event surface identified in step 5 is represented

Flag any validation failures as gaps in the coverage matrix.

Path B — AI generates via Figma MCP: Check whether the Figma MCP tool generate_figma_design is available. If unavailable, warn the user and fall back to Path C (scaffold).

If available: for each screen in the journey map without a frame, call generate_figma_design with:

• The screen's user story and entry/exit points as the design brief
• Component patterns and tokens from docs/steering/DESIGN.md (loaded in step 3)
• Shared components identified in step 7 as reuse constraints
• Any Figma URLs from the Epic's Design Artifacts as style reference

Collect the generated frame URLs and treat them as Path A frames for the coverage matrix and Design Handoff.

Path C — Scaffold brief only: For each screen in the journey map, produce a text brief listing required UI elements, interactions, and relevant design tokens. This is a Figma-free design brief a designer or developer can execute against. Use references/component-spec-template.md as the structure if available.

Partial: Collect available frame URLs, run Path A validation on covered screens. For uncovered screens, call AskUserQuestion asking whether to generate (Path B) or scaffold (Path C) the remainder.

7. Identify shared components

Across all screens in the journey map, identify:

• Reused existing components — already in the codebase (found in step 4); list component path + which screens use it
• New shared components — appear on 2+ screens but do not exist yet; name them using domain language
• Screen-specific components — appear on only one screen; note them but do not detail here (that is wtf.design-task's job)

This component map reduces duplication when wtf.design-task runs per-task.

8. Draft the Design Handoff

Produce content for the Design Handoff section of the Feature issue:

## Design Handoff

- Figma: <top-level Figma file URL, generated file URL, or "pending (scaffold only)">
- Flow: <link to prototype/flow if available>
- Design path: <Path A: human-provided | Path B: AI-generated | Path C: scaffold brief>

### Screen inventory

| Screen | Story | Figma frame | States covered | Source |
|--------|-------|-------------|----------------|--------|
| <screen name> | As a... | <url or pending> | default / loading / error / empty | provided / generated / scaffolded |

### Validation (Path A/B only)

- [ ] Every user story has ≥1 frame
- [ ] Every edge case has a boundary/error state frame
- [ ] Every Domain Event surface is represented
- [ ] All frames consistent with DESIGN.md tokens and patterns

### Shared components

| Component | Exists? | Path or new | Used on |
|-----------|---------|-------------|---------|
| <name> | yes/no | <path or "new"> | <screens> |

### Accessibility notes

<any feature-level a11y constraints from steering doc or Epic>

### Open gaps

<list any screens or states not yet designed — pending Figma frames>

9. Review with user

Show the draft. Then call AskUserQuestion with question: "Does this cover the full feature journey?", header: "Review", and options:

• {label: "Looks complete — update the issue", description: "Proceed"}
• {label: "Missing screens or states", description: "I want to add coverage"}
• {label: "Other changes", description: "I want to adjust something"}

Apply edits, then proceed.

10. Update the Feature issue

Read the current issue body, replace only the Design Handoff section with the new content, preserve all other sections. Write to temp file and use --body-file:

gh issue edit <feature_number> --body-file /tmp/wtf.design-feature-<feature_number>-body.md

Add the designed label when either:

• Path A/B: all screens in the journey map have Figma frames (no open gaps in coverage matrix), or
• Path C: the full scaffold brief is complete (no Figma expected)

gh issue edit <feature_number> --add-label "designed"

If Path A/B has open gaps, do not add designed — note it will be added once gaps are closed.

This fulfills the Feature DoR gate: "Design handoff complete".

Print the updated Feature issue URL.

11. Offer to continue

Call AskUserQuestion with:

• question: "What's next?"
• header: "Next step"
• options:

- {label: "Break into Tasks", description: "Run feature-to-tasks — design context will inform task breakdown (default)"} - {label: "Design another Feature", description: "Design another Feature for the same Epic"} - {label: "Stop here", description: "Exit — no further action"}

• Break into Tasks → follow the wtf.feature-to-tasks skill, passing the Feature number in as context. Note to the user that wtf.design-task will inherit the shared component map from this Design Handoff.
• Design another Feature → restart from step 1, reusing the same Epic context.
• Stop here → exit.