smoketest

Run a cat-factory Pi-agent smoketest end to end. Use when asked to smoketest, sanity-check, or shake out a model on real coding tasks through the actual Pi setup — e.g. "smoketest the new Cloudflare model", "does Llama get stuck on the healthcheck task", "shake out qwen-coder on the coding fixtures". Configures the matrix, runs cat-smoke against actual Cloudflare AI, and surfaces breakage / dead-ends / loops from…