{"type":"system","subtype":"init","session_id":"sess-claude-multi","model":"claude-sonnet-4-6"}
{"type":"assistant","message":{"id":"msg_1","role":"assistant","content":[{"type":"text","text":"line one"},{"type":"text","text":"line two"}]}}
{"type":"system","subtype":"other","info":"should be ignored"}
{"type":"result","subtype":"success","usage":{"input_tokens":1,"output_tokens":2,"cache_read_input_tokens":0}}