fix: resolve SKILL.md validation errors

skills/async-python-patterns/SKILL.md

@@ -1,6 +1,8 @@
 ---
 name: async-python-patterns
 description: "Master Python asyncio, concurrent programming, and async/await patterns for high-performance applications. Use when building async APIs, concurrent systems, or I/O-bound applications requiring non-..."
+risk: unknown
+source: community
 ---
 
 # Async Python Patterns