- main.go's wiring was untested (the test built its own copy of the router, so dropping auth in main or re-registering POST /query as public stayed green). Routing is now one function, buildMux, which main calls and the tests call: it constructs the bearer middleware itself, registers public handlers only for patterns on a fixed allowlist (a public REST pattern would beat the authenticated catch-all by specificity), refuses an empty token, and returns an http.Handler so nothing can add a route to the result. - hyperguild CLI: PassRate sent no token and would 401. Every request now goes through brainClient.do, which adds it; the test covers Query, Write and PassRate and is named for that. - ResolveIngestPath returns one refusal for every bad path; the raw EvalSymlinks error let a caller probe which server files exist and leaked the brain directory. - PROJECT.md (and derived adapters) and the pass-rate runbook state that the REST API needs BRAIN_MCP_TOKEN and is tailnet/in-cluster. Refs #149 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>