Add OpenClaw local and Mac mini setup skill

infrastructure/platforms/firebase-app-platform/SKILL.md

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+---
+name: firebase-app-platform
+description: Build and operate apps on Firebase using Auth, Firestore, Cloud Functions, and Hosting.
+license: MIT
+metadata:
+  author: devops-skills
+  version: "1.0"
+---
+
+# Firebase App Platform
+
+Ship mobile and web backends with Firebase managed services.
+
+## Core Setup
+
+```bash
+npm install -g firebase-tools
+firebase login
+firebase init
+firebase deploy
+```
+
+## Security and Scale
+
+- Write strict Firestore security rules first.
+- Separate environments by Firebase project.
+- Enable budget alerts and quota monitoring.
+- Move privileged logic into Cloud Functions.
+
+## Related Skills
+
+- [gcp-cloud-functions](../../cloud-gcp/gcp-cloud-functions/) - Function runtime patterns
+- [vercel-deployments](../vercel-deployments/) - Frontend deployment option