Stitch to Vue 3 + Vant 4 Components

Constraint: Only use this skill when the user explicitly mentions "Stitch" and converting Stitch screens to Vue 3 + Vant 4 (Vite, .vue SFC, mobile-first).

You are a frontend engineer turning Stitch designs into clean, modular Vue 3 + Vant 4 code. Use Stitch MCP (or stitch-mcp-get-screen) to retrieve screen metadata and HTML; use scripts and resources in this skill for reliable fetch and quality checks.

Prerequisites

Stitch MCP Server (https://stitch.withgoogle.com/docs/mcp/guide/)
Node.js and npm (for Vite/Vue 3 project)
Stitch project and screen IDs — two ways: (1) From a Stitch design URL: parse projectId (path) and screenId (node-id query). (2) When no URL or when browsing: use stitch-mcp-list-projects and stitch-mcp-list-screens to discover and obtain IDs.

Official Documentation

Vant (Vue 3): Official · Guide / Components (zh-CN) · GitHub
Full links and usage: references/official.md

Retrieval and Networking

Discover Stitch MCP prefix: Run list_tools to find the prefix (e.g. mcp_stitch__stitch:).
Fetch screen metadata: Call [prefix]:get_screen with projectId and screenId (numeric IDs) to get design JSON, htmlCode.downloadUrl, screenshot.downloadUrl, dimensions, deviceType.
High-reliability HTML download: AI fetch tools can fail on Google Cloud Storage URLs. Use Bash to run the skill script:
```
bash scripts/fetch-stitch.sh "<htmlCode.downloadUrl>" "temp/source.html"
```
Ensure the URL is quoted.
Visual reference: Use screenshot.downloadUrl to confirm layout and details.

Architectural Rules

Modular components: Split the design into separate .vue files; avoid one giant SFC.
Logic isolation: Put event handlers and composables in src/composables/ or within script setup.
Data decoupling: Move static text, image URLs, and lists into src/data/mockData.js (or .ts).
Vant 4 only (use framework components when available): Use van-cell-group (inset) for card-like sections, van-field for form hints; do not use div.card or custom .card-header/.tips-text. Use <van-*> components per references/contract.md; mobile-first (375px base), safe area, flex layout.
Project-specific: Omit third-party license headers from generated components.

Execution Steps

Environment: If the project has no node_modules, run npm install.
Data layer: Create src/data/mockData.js from the design content.
Component drafting: Use resources/component-template.vue as base; replace placeholder with real component name and Vant 4 tags per contract.
Wiring: Update the app entry (e.g. App.vue or router) to render the new components.
Quality check: Verify against resources/architecture-checklist.md; run npm run dev to confirm visually (mobile viewport).

Integration with This Repo

Get screen: Use stitch-mcp-get-screen with projectId and screenId. Obtain IDs either by parsing a Stitch design URL or by using stitch-mcp-list-projects and stitch-mcp-list-screens when no URL or when the user needs to browse/select.
Design spec: If Stitch was generated with stitch-ui-design-spec-vant constraints, map to Vue SFC and Vant 4 components. If converting from Stitch HTML (e.g. get_screen htmlCode), use references/tailwind-to-vant.md for Tailwind utility → px/theme, then references/contract.md for component API.
Design system: If the project has DESIGN.md (from stitch-design-md), align colors and spacing with that system when mapping to Vant tokens.

Troubleshooting

Fetch errors: Quote the URL in the bash command; ensure scripts/fetch-stitch.sh is executable.
Component mapping: Follow references/contract.md for buttons (van-button), forms (van-form, van-field), nav (van-nav-bar, van-tabbar), cells (van-cell-group), cards (van-card), submit bar (van-submit-bar).

Keywords

English: Stitch, Vue 3, Vant, Vant 4, Vite, mobile, van-button, van-nav-bar.
中文关键词： Stitch、Vue 3、Vant、移动端、组件。

References

Examples
Scripts
Component index (per-component doc links)
Tailwind → Vant 4 — Tailwind utility → px/theme when converting Stitch HTML.
Contract (Vant 4 mapping)
Component API (props/events quick reference)
Official documentation
Architecture checklist
Component template
Stitch API / MCP

stitch-vue-vant-components