From the race detector, staticcheck, a garbage-in battery over every safe route and a
headless pass through every tab on two machines. Fixed:
- docker inspect/health of a container that isn't there answered 500; now 404, and a
daemon that is down 503 (dockerErr, with a test).
- /api/virt/instances/{name} on a machine without Incus answered 502 "incus not found";
it now says Incus isn't ready, like its siblings.
- Deleting a ZFS snapshot with a bad name answered 500; a bad name is 400, a snapshot
that doesn't exist 404.
- The task list read a task's Running flag without the task's lock while the waiter
goroutine cleared it: a data race, now read under the lock.
- The Virtualization export config and run record were written in place; a crash
mid-write would have left a half file. Atomic now, like the config and state files.
- An unused function in kvm.go, one in incus/subnet.go, an unused field in files/move.go
and a capitalised error string, from staticcheck.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
