Setup wrote .playwright-staging-state.json at the END (step 7), only
after org create + provision-wait + TLS + workspace create + workspace-
online all succeeded. If setup crashed at steps 1-6, the org existed in
CP but the state file did not, so Playwright's globalTeardown bailed
out ("nothing to tear down") and the workflow safety-net pattern-swept
every e2e-canvas-<today>-* org to compensate. That sweep deleted
concurrent runs' live tenants — including their CF DNS records —
causing victims' next fetch to die with `getaddrinfo ENOTFOUND`.
Race observed 2026-04-30 on PR #2264 staging→main: three real-test
runs killed each other mid-test, blocking 68 commits of staging→main
promotion.
Fix: write the state file as setup's first action, right after slug
generation, before any CP call. Now:
- Crash before slug gen → no state file, no orphan to clean
- Crash during steps 1-6 → state file has slug; teardown deletes
it (DELETE 404s if org never created)
- Setup completes → state file has full state; teardown
deletes the slug
The workflow safety-net no longer pattern-sweeps; it reads the state
file and deletes only the recorded slug. Concurrent canvas-E2E runs no
longer poison each other.
Verified by:
- tsc --noEmit on staging-setup.ts + staging-teardown.ts
- YAML lint on e2e-staging-canvas.yml
- Code review: state file write moved to line 113 (post-makeSlug,
pre-CP) with the original line-249 write retained as a "promote
to full state" overwrite at the end
15b98c4916