Use sidecar guardrails for agents

- An X post urged separating guardrails from agent execution by running sidecar processes that monitor cost, kill runaway sessions, and avoid timing drift. - @GG_Observability suggested real-time cost monitors and session kills as sidecar duties to ensure controls sit below the model loop in production environments. - Keeping interlocks outside the model path reduces the window for destructive actions and enables faster intervention. (x.com)