A tool result stays whole in its own tool message; a request-prep marker
names a document_id (the message's tool_call_id). read_document,
search_document, document_info, and list_documents resolve that id back to
the message body, so reading and searching a capped result needs no re-run.
The store binds on the host instance and reads the agent's live history,
which carries whole results and re-reads whatever a resume reloaded.
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
