Module history 

Agent session history — append-only per-agent entries with date-bucket + LIKE search.

Extracted from store.rs in Phase R.4 of the storage modularization plan (docs/specs/SPEC_STORE_MODULARIZATION_2026_05_27.md). The method surface is unchanged — Store::agent_history_* still lives on Store via this impl block; callers stay on storage::store::AgentHistory thanks to the re-export.

Structs

AgentHistory

An append-only session history entry for a agent definition.

Functions

format_epoch_date 🔒

Format days-since-epoch as YYYY-MM-DD string. Simple implementation without chrono dependency.