msd-core/.changeset/866-profile-pipeline-temp-root.md

type, pr

type	pr
Fixed	879

profile-pipeline temp output now lands under the reaped GSD temp root. cmdExtractMessages and cmdProfileSample previously created their output directories directly in os.tmpdir() root (gsd-pipeline-* / gsd-profile-*), which reapStaleTempFiles never scans (it only scans GSD_TEMP_DIR = os.tmpdir()/gsd). The directories accumulated forever. Both sites now call ensureGsdTempDir() and create under GSD_TEMP_DIR. Also adds missing after/afterEach teardown to four test fixtures that leaked gsd-* temp dirs on every npm test run. (#866)