feat: Add 57 skills from vibeship-spawner-skills

Ported 3 categories from Spawner Skills (Apache 2.0):
- AI Agents (21 skills): langfuse, langgraph, crewai, rag-engineer, etc.
- Integrations (25 skills): stripe, firebase, vercel, supabase, etc.
- Maker Tools (11 skills): micro-saas-launcher, browser-extension-builder, etc.

All skills converted from 4-file YAML to SKILL.md format.
Source: https://github.com/vibeforge1111/vibeship-spawner-skills

skills/azure-functions/SKILL.md

@@ -0,0 +1,42 @@
+---
+name: azure-functions
+description: "Expert patterns for Azure Functions development including isolated worker model, Durable Functions orchestration, cold start optimization, and production patterns. Covers .NET, Python, and Node.js programming models. Use when: azure function, azure functions, durable functions, azure serverless, function app."
+source: vibeship-spawner-skills (Apache 2.0)
+---
+
+# Azure Functions
+
+## Patterns
+
+### Isolated Worker Model (.NET)
+
+Modern .NET execution model with process isolation
+
+### Node.js v4 Programming Model
+
+Modern code-centric approach for TypeScript/JavaScript
+
+### Python v2 Programming Model
+
+Decorator-based approach for Python functions
+
+## Anti-Patterns
+
+### ❌ Blocking Async Calls
+
+### ❌ New HttpClient Per Request
+
+### ❌ In-Process Model for New Projects
+
+## ⚠️ Sharp Edges
+
+| Issue | Severity | Solution |
+|-------|----------|----------|
+| Issue | high | ## Use async pattern with Durable Functions |
+| Issue | high | ## Use IHttpClientFactory (Recommended) |
+| Issue | high | ## Always use async/await |
+| Issue | medium | ## Configure maximum timeout (Consumption) |
+| Issue | high | ## Use isolated worker for new projects |
+| Issue | medium | ## Configure Application Insights properly |
+| Issue | medium | ## Check extension bundle (most common) |
+| Issue | medium | ## Add warmup trigger to initialize your code |