docs: add Vercel composition-patterns and react-native-skills references

Update CLAUDE.md, README, and skill files to reference the full set of
Vercel Labs agent-skills: vercel-composition-patterns and
vercel-react-native-skills alongside the existing react-best-practices.

Author: howells

CLAUDE.md

@@ -94,15 +94,16 @@ To test changes locally:
 
 Arc focuses on the development lifecycle. For specialized domains, consider these Vercel Labs plugins:
 
-- **[agent-skills](https://github.com/vercel-labs/agent-skills)** — `vercel-react-best-practices` skill for React/Next.js performance patterns
+- **[agent-skills](https://github.com/vercel-labs/agent-skills)** — `vercel-react-best-practices`, `vercel-composition-patterns`, `vercel-react-native-skills`
 - **[web-interface-guidelines](https://github.com/vercel-labs/web-interface-guidelines)** — `web-design-guidelines` skill for UI compliance review
 
 **When installed, Arc commands will suggest these skills:**
 | Arc Command | Complementary Skill | Use Case |
 |-------------|-------------------|----------|
-| `/arc:design` | `web-design-guidelines` | UI compliance review |
-| `/arc:implement` | Both | Quality checkpoints |
-| `/arc:letsgo` | `vercel-react-best-practices`, `vercel:deploy` | Production readiness |
+| `/arc:design` | `web-design-guidelines`, `vercel-composition-patterns` | UI compliance, component architecture |
+| `/arc:implement` | All agent-skills + `web-design-guidelines` | Quality checkpoints |
+| `/arc:letsgo` | `vercel-react-best-practices`, `vercel-react-native-skills`, `vercel:deploy` | Production readiness |
+| `/arc:responsive` | `web-design-guidelines`, `vercel-react-native-skills` | Mobile audit |
 
 ## Publishing
 

README.md

@@ -90,7 +90,9 @@ These plugins provide additional review capabilities:
 | Plugin | Skill | Used by |
 |--------|-------|---------|
 | **[agent-skills](https://github.com/vercel-labs/agent-skills)** | `vercel-react-best-practices` | `/arc:implement`, `/arc:letsgo` |
-| **[web-interface-guidelines](https://github.com/vercel-labs/web-interface-guidelines)** | `web-design-guidelines` | `/arc:design`, `/arc:implement` |
+| | `vercel-composition-patterns` | `/arc:implement`, `/arc:design` |
+| | `vercel-react-native-skills` | `/arc:implement`, `/arc:letsgo`, `/arc:responsive` |
+| **[web-interface-guidelines](https://github.com/vercel-labs/web-interface-guidelines)** | `web-design-guidelines` | `/arc:design`, `/arc:implement`, `/arc:responsive` |
 
 ```
 # Vercel Labs plugins (optional)

skills/design/SKILL.md

@@ -534,6 +534,7 @@ Design is complete when:
 
 - Produces design doc consumed by **/arc:implement**
 - Can invoke **web-design-guidelines** skill for compliance review (if available)
+- Can invoke **vercel-composition-patterns** skill for component architecture review (if available)
 - Uses **Chrome MCP** (`mcp__claude-in-chrome__*`) for visual capture throughout
 - Uses **WebFetch** to research design inspiration from Siteinspire and Mobbin
 - References feed into implementation to maintain design fidelity

skills/letsgo/SKILL.md

@@ -342,6 +342,12 @@ Invoke skill: vercel-react-best-practices
 "Review performance patterns. Check: component rendering, data fetching, bundle optimization"
 ```
 
+**If React Native/Expo and `vercel-react-native-skills` skill available:**
+```
+Invoke skill: vercel-react-native-skills
+"Review React Native production readiness. Check: list performance, animation optimization, memory leaks, native module usage, Expo config"
+```
+
 ### G. Security (Always)
 - [ ] No secrets in client-side code (check bundle)
 - [ ] HTTPS enforced (automatic on Vercel)
@@ -615,4 +621,5 @@ Letsgo is complete when:
 - References **/arc:vision** to verify alignment
 - Invokes **/arc:legal** to generate missing legal documents
 - Can invoke **vercel-react-best-practices** skill for performance review (if available)
+- Can invoke **vercel-react-native-skills** skill for React Native performance review (if available)
 - Can invoke **vercel:deploy** skill for deployment (if available)

skills/responsive/SKILL.md

@@ -379,6 +379,7 @@ Responsive audit is complete when:
 - Uses **Chrome MCP** (`mcp__claude-in-chrome__*`) for all browser interaction
 - Follows `/arc:commit` discipline for commits
 - Can invoke `web-design-guidelines` skill for compliance review (if available)
+- Can invoke `vercel-react-native-skills` skill for React Native mobile optimization (if available)
 
 <arc_log>
 **After completing this skill, append to the activity log.**