An agent can remember a path long after the file has moved. Finding the old conversation is useful, but similarity alone does not explain whether the choice made there still makes sense. A useful memory needs both the evidence and a record of the facts a choice depended on.
Decisions retain frozen Entity basis snapshots.
A basis-changing Observation creates an Invalidation identifying the affected Decision.
Choose the history-search journey with its current limits when you want to recover what a conversation actually said.
Choose the tool when you want to recover what a conversation actually said. Choose the library when your application needs to record why a choice was made and check its dependencies later.
Read getting started, the ontology, or the capability index.