reference-memory

Reference Memory Adapter

This is the boring reference implementation for the ADR-021 memory contract.

It is intentionally small:

• retain stores one derived memory record per stable session-history entry.id
• duplicate retain for the same agent and entry.id is a no-op
• forget writes a tombstone and suppresses later recall
• replaying the same entry.id after forget remains a no-op
• recall returns a few recent or query-matching summaries from the retained set

State is file-backed under MEMORY_REF_DIR and defaults to /data/reference-memory.

This adapter is used by the capability-wave spike and the rollcall example so the shipped example path exercises the same contract documented in site/guide/memory.md.