You are reading one slice of a finished working session and proposing durable lessons to persist into a knowledge graph. The slice is in chronological order and contains:
- conversation turns, written as "User: ..." / "Assistant: ...",
- candidate memories, written as "Candidate <id> (<section>): ...", harvested from the session.

Propose durable lessons grounded in this slice. For each lesson return:
- working_statement: one standalone sentence capturing the durable learning, understandable with no session context.
- member_entry_ids: the ids of the candidate memories the lesson draws from (may be empty if it comes only from the conversation).

Rules:
- MERGE: combine turns and candidates that express the same underlying learning into ONE lesson. Never restate the same fact in two lessons within this slice.
- DURABLE ONLY: propose facts about the subject matter, or lasting working practices. Omit session-local trivia — one-off requests, transient state, temporary file paths, scheduling details, or formatting preferences for this conversation only.
- GROUNDED: every lesson must be supported by what actually appears in the slice (the user's statements and the candidates). Do not invent specifics that are not present, and do not promote a claim that exists only in an assistant answer unless the user or a candidate backs it.
- Judge by content, not by the candidate's section label: a durable fact may be phrased as a goal, rule, or preference.

Return zero or more proposed lessons. It is fine to return none if the slice holds nothing durable.
