Three cherry-picked PRs in this wave landed without unit-test coverage for
the specific invariant they protect:
#1606 (@andrey-esipov) — LC_ALL=C pin in _gstack_gbrain_validate_varname
8 tests by sourcing bin/gstack-gbrain-lib.sh and calling the validator
directly. Asserts uppercase/digit/underscore accepted, lowercase
REJECTED (the macOS-locale regression case), mixed-case rejected,
LC_ALL=C scoping is local (doesn't leak to caller).
#1612 (@bharat2913) — setsid daemonize via Node child_process.spawn
4 static-invariant tests on browse/src/cli.ts. The actual setsid
syscall is hard to assert without a real spawn, so we pin the source
shape: nodeSpawn imported from child_process; non-Windows branch uses
nodeSpawn(...) with detached:true and .unref(); comment documents
setsid/SIGHUP root cause; Bun.spawn() is NOT used on macOS/Linux.
#1620 (@davidfoy, re-authored into .tmpl per A3) — §4a-postfail
12 static invariants on land-and-deploy/SKILL.md.tmpl + generated
SKILL.md. Pins all three state branches (MERGED/OPEN/CLOSED), the
authoritative state query, the merge-SHA capture, non-destructive
worktree cleanup with uncommitted-work guard, autoMergeRequest probe
on OPEN, hard "never retry gh pr merge" rule, and atomic regen
propagation.
Failing build if any of the three invariants regresses.
Note: gbrain-lib-validate-varname.test.ts also surfaces a pre-existing
glob-pattern overpermissiveness (hyphens + dots accepted) — not in
#1606's scope; documented inline as a separate cleanup target.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan