kami
8e6a3e1470
Record L3 retrieval as an event carrying hit text (invariant #9), then rebuild router state and inject recalled memories as a SYSTEM L3 layer in the context pack. Apply token budget: protected frames (L0 immutable + current user turn) are never dropped; honest budgetUsed is reported and 'BudgetExceeded' is flagged in appliedStrategies when they overflow. L1/L2 fit newest-first so oldest entries drop first. Emit ContextTruncatedEvent when entries are dropped. L3MemoryRetrievedEvent is emitted on every CHAT turn (empty hits reset recalled memory).