{"type":"function","function":{"name":"re_read","description":"Read a retained frame CID through the host. Results are bounded slices with explicit completeness and continuation metadata; follow the returned offset to read more. A missing or unauthorized CID fails closed.","parameters":{"type":"object","properties":{"cid":{"type":"string"},"offset":{"type":"integer","minimum":0},"max_bytes":{"type":"integer","minimum":1}},"required":["cid"]}}}