New goal from the 2026-07-21 discussion: the libraries the buildsuites compile
and ship (thread, tclvfs, tcllib+tcllibc, tklib, tk) get their own testsuites
run under the suite-built shell as named recipe steps with per-library policy -
gate (core test-gate mechanism, dispositioned baselines), record (report
artifacts under out/testreports/), or opt-in (tk). Context carries the source
survey, test_gate.tcl generalization notes, G-102 cost knowns, and the G-103
metadata / 8.6-arc relationships.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com