Answering a question tool (or a permission prompt) could leave the session
permanently stuck on "asking question": resolveDirectoryForBlockingRequest
returned the containing child-store key, which only proves containment.
For a worktree session (or any session whose record is grouped under a
parent project store), the reply was addressed to the parent directory's
OpenCode instance, where the pending request does not exist - the server
answered QuestionNotFoundError, the local request was removed, and the
trailing question-tool part stayed running with no recovery until Stop.
Resolve the directory from the request's own session record (server-
confirmed ownership: session.directory, then project.worktree) before
falling back to the containing store key. When a reply/reject comes back
not-found, also enqueue the settled-running-tool tail materialization so
the tool part converges to the server's actual state instead of leaving
the UI stuck.
Refs OPE-236