dsh-branch-inbox-guard

In DSH, a branch session (fork child) seeds its log with the parent completed-turn prefix, which can carry undelivered agent/inbox/spliced events the parent had queued. The practical effect: a question you type in the branch gets appended behind those leftover prompts, and the very first turn claims the parent message. Your new question appears to vanish.

dsh-branch-inbox-guard inspects the pending queue on every agent/created event and drops exactly the items whose inserting spliced event lies inside the inherited prefix of the session. Each removal is recorded as a standard cancel event appended to the log, so the queue stays clean across restarts. The operation is idempotent and conservative, clearing only entries it can prove originated from the fork parent. It is a pure host-side plugin: no core-file patching, no client half, no configuration.

Best for DSH users who work with branch or fork sessions and queue prompts while an agent is still running. Should a future DSH release fix the inbox projection upstream, the plugin simply finds nothing to remove and can be uninstalled with no residue.