statewave_compile_subject
Compile a subject's accumulated raw episodes into durable, retrievable memories. This is the step that makes ingested episodes searchable: statewave_ingest_episode stores raw episodes, and this distils them into the compiled memory that statewave_get_context and statewave_search_memories read. Triggers a compile job on the server and returns its summary (subject and status). By default it is a no-op when there are no new episodes since the last compile; set force to recompile anyway. Call it right after ingesting episodes you want to become retrievable.