next_activation() takes the UTC second once and tries the base id, then -1 through -9, against
stack-rollback/, backups/stack/ and the post-attempt store, all under the lock. ACT and POST share
the suffix, and with all ten taken it refuses capture-failed with nothing stopped. Adopt uses the
same helper. --restore takes the old and the suffixed form.
Under --plan, a bad --tester-port reports tester-port-invalid through check_refuse and
tester-port-target goes through check_refuse in both modes, so the plan lists every refusal.
Without --plan the output is the usage block, byte for byte as before. webui-service.sh counts the
tester port's digits as written before stripping zeros, so 007333 refuses as serve does.
Round 2 adds subtests C1 (adopt takes the next free id) and C2 (a bad port is usage before any
pointer read) for Dewey's round 1 (#1678 comment 29352). Dewey approved round 2 in comment 29361.
darkwing
1905e385c4