fix(cli): the acceptance teardown finishes kill→delete instead of leaking killed rows

Every CLI acceptance run left its fixtures as killed rows forever: the
teardown filtered to non-terminal fleets, killed them, and returned — the
delete half of the product's own state machine (DELETE 409s UZ-AGT-010 until
killed) never ran, each rerun minted a fresh prefix that could not match the
last run's leftovers, and the terminal-skip filter looked away from them too.
98 killed acc-* rows accumulated in the shared dev workspace; they are swept
(product DELETE path, count now 0) and the teardown now deletes what it
kills, terminal rows included.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>