Commit local changes

Author: Keno

CLAUDE.md

@@ -1,5 +1,17 @@
 # Development Guidelines for LLMBenchMCPServer.jl
 
+## Important Notes
+
+### Unix Domain Sockets
+- **Always use `ispath()` not `isfile()` to check for Unix domain sockets**
+- Unix domain sockets are not regular files, so `isfile()` returns false
+- This applies to checking SSH_AUTH_SOCK, server sockets, and any socket cleanup
+
+### Environment Variables
+- **ANTHROPIC_API_KEY is automatically forwarded to the sandbox**
+- If set in the host environment, it will be available in the sandboxed process
+- This allows tools inside the sandbox to use the Anthropic API
+
 ## Shipping Code
 
 When asked to "ship it" or after making changes: