GHSA-RM43-82J9-R4MJ atomic-agents-stack: Dashboard HTTP server path traversal allows arbitrary file read

The optional dashboard HTTP server atomicagents/dashboard/serve.py builds filesystem paths directly from the request path and serves them without a containment check. It is the only per-request untrusted-path site in the codebase that does not route through io.saferesolveunder. Literal ../ segmen...