Agent Memory Becomes Structured State
Long-running agents are replacing undifferentiated context with structured state built for different consumers. A live trace ledger compiles separate views for the agent and human observer at materially lower token cost; event-centric memory binds multimodal records, time, graph relations and provenance; latent memory compresses context without reconstructing text; and independent implementations organize episodic, graph and resumable workflow memory. Memory is becoming a runtime data architecture with explicit structure, attribution and replay.