Let individual requests cancel their shared assembly-index wait while the session aborts and drains the owned producer. Preserve verifier workspaces until provider, transport and process cleanup are confirmed; report failed runs with original errors and lineage evidence. Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com> Co-authored-by: Kaoru0822 <208281322+kaoru0822-kitauji@users.noreply.github.com>