Fix Sandbox.jl UUID to match actual package

- Corrected UUID from 2a860ab3-4588-4c8f-8be9-dbaa3e658a0e
  to a4e034a1-bbed-5493-bc6f-f0a4e1c5e439
- This matches the UUID used in server.jl for Base.require

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: Keno

Project.toml

@@ -8,7 +8,7 @@ ClaudeMCPTools = "b9bb1685-6a70-41d7-9793-2f9fb633d966"
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
 LLMBenchSimple = "a7b3c4d5-e6f7-8901-2345-678901234567"
-Sandbox = "2a860ab3-4588-4c8f-8be9-dbaa3e658a0e"
+Sandbox = "a4e034a1-bbed-5493-bc6f-f0a4e1c5e439"
 Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"