Module conversation_buffer 

ConversationBuffer: in-memory circular buffer of recent conversation turns.

Used by SpaceManager for topic shift detection. Maintains recent N turns in memory (not persisted — restarts with empty buffer, which is fine since Layer 1/2 detection doesn’t need history).

Structs

ConversationBuffer

In-memory circular buffer of recent conversation turns.

ConversationTurn

A single conversation turn (user message + agent response).