Phase 3's gsd-test surfaced 8 pre-existing test-isolation races (in #2090's test
files now on next). Per CLAUDE.md's no-defer rule these are fixed inline in the
current change. Root-caused via /qa-test-architect — all bad-test (the
rewrite-engine production code is race-free):
- install-runtime-artifacts.test.cjs: the "rmSync when readFileSync throws" test
diffed the SHARED os.tmpdir() for gsd-cmd-rewrites-* dirs and force-deleted any
new one with no ownership check. Under --test-concurrency it deleted a sibling
test file's LIVE tempDir mid-copy (the #1575 "ENOENT .../graphify.md") and
misattributed it as its own leak. Fixed: capture the exact tempDir THIS call
creates (fs.mkdtempSync monkeypatch, restored in finally) and assert only on
that — never sweep/delete the shared os.tmpdir(). Also deduped the enh-1511
block the #1969 consolidation folded in 3x byte-identically (#1970/#1974/#1975)
down to 1 copy; 308 unique test titles unchanged (verified).
- issue-1575-agent-descriptor-parity.test.cjs: a missing }); nested the M2
'cursor attribution' test inside the per-runtime loop so it ran 7x (widening
the tempDir window). Fixed the brace -> runs once as a describe sibling.
- config-get-default.test.cjs: local run()/runRaw() spawned node via
execFileSync with a fixed 5s timeout and no retry -> ETIMEDOUT under Docker
load. Redesigned to call cmdConfigGet in-process (fs.writeSync fd-capture +
process.exit sentinel, both restored in finally) — no subprocess, no wall clock.
- runtime-artifact-conversion.cts: fixed the stale "No production caller today"
JSDoc on rewriteStagedCommandBodies (real callers: applySurface,
createRuntimeArtifactInstallPlan) — the false doc invited the bad test.
Refs #2126, #2090
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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