update: エントリの単数化のフォローアップ

crates/session-store/Cargo.toml

@@ -7,10 +7,8 @@ license.workspace = true
 
 [dependencies]
 llm-worker = { workspace = true }
-async-trait = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
-tokio = { workspace = true, features = ["fs", "io-util"] }
 uuid = { workspace = true, features = ["v7", "serde"] }
 thiserror = { workspace = true }
 sha2 = { workspace = true }
@@ -19,6 +17,7 @@ protocol = { workspace = true }
 tracing.workspace = true
 
 [dev-dependencies]
+async-trait = { workspace = true }
 tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }
 tempfile = { workspace = true }
 futures = { workspace = true }

crates/session-store/src/system_item.rs

@@ -8,8 +8,9 @@
 //! `kind` instead of parsing text prefixes like `[Notification] …` or
 //! `[File: …]`.
 //!
-//! Persisted as the payload of [`crate::LogEntry::SystemItems`], and
-//! broadcast live as the payload of `Event::SystemItem` on the wire.
+//! Persisted as the payload of [`crate::LogEntry::SystemItem`] (one
+//! entry per item), and broadcast live as the payload of
+//! `Event::SystemItem` on the wire.
 //!
 //! For LLM context replay, each `SystemItem` reduces to an
 //! `Item::system_message(...)` whose body matches the legacy free-text