feat(sandbox): add Python 3 code execution sandbox support

sandbox/app/middleware/auth.py

@@ -0,0 +1,15 @@
+"""Authentication middleware"""
+from fastapi import Header, HTTPException, status
+
+from app.config import get_config
+
+
+async def verify_api_key(x_api_key: str = Header(..., alias="X-Api-Key")):
+    """Verify API key from request header"""
+    config = get_config()
+    if x_api_key != config.app.key:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid API key"
+        )
+    return x_api_key