Capture the tooling that pays for itself across the remaining slices, ranked by
ROI-per-effort: (1) host_conformance(suite) per-suite fast runner — trivial bash arg,
done by hand this session; (2) host_live_check — boot ephemeral server, authed request
sequence, return rendered HTML (generalizes run-picker-check.sh; the pre-deploy check that
catches serving-JIT divergence conformance misses); (3) host_render_diff — render a route
JIT-vs-interpreter and flag divergence (the precise detector that ends the bug class;
builds on sx_render_trace; regression oracle for the jit-bytecode-correctness loop); (4)
surface deps-check/prim-check as MCP. Plus: file the sx-tree worktree write/validate bug.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
