SSOT pass — replace 4 bare `h.provisioner == nil && h.cpProv == nil`
checks with `!h.HasProvisioner()`. When a third backend lands (k8s,
containerd, whatever), HasProvisioner gets one new field; bare both-nil
checks would each need to be hunted and updated.
Sites:
- a2a_proxy_helpers.go:166 — maybeMarkContainerDead skip-no-backend
- workspace_restart.go:118 — Restart endpoint guard
- workspace_restart.go:363 — RestartByID coalescer guard
- workspace_restart.go:660 — Resume endpoint guard
Adds TestNoBareBothNilCheck (source-level) so the antipattern can't
slip back in.
Out of scope but discovered during the audit (filed separately):
- team.go:207 — team-collapse Stop is Docker-only, leaks EC2 on SaaS
- workspace_crud.go:423 — workspace delete cleanup is Docker-only,
leaks EC2 on SaaS
Both need a StopWorkspaceAuto mirror of provisionWorkspaceAuto. Same
class of bug as today's org-import incident, different verb (stop vs
provision).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
7e1fdf5847