test: quarantine onboard-pack-upgrade-checks as serial (env mutation, R1 lint)

check-test-isolation flagged the file-scoped GBRAIN_HOME mutation in
beforeAll/afterAll. withEnv() is callback-scoped and can't span the file
lifecycle, so take the lint's quarantine path: rename to *.serial.test.ts
(runs in the serial-tests job at --max-concurrency=1).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-07-22 10:47:26 -07:00
co-authored by Claude Fable 5
parent 80606d5df0
commit f0e9a602df