Prune commentary and stale Rust port notes

event-model/Cargo.toml

@@ -3,18 +3,9 @@ name = "event-model"
 version = "0.1.0"
 edition = "2024"
 
-# The common event model, extracted from `server/session/driver.rs` and
-# `session/transcript.rs` so a Rust client (`client-core`) can share one
-# definition with the server instead of hand-mirroring it the way
-# `app/.../Events.kt` used to. Nothing here talks to a process, a file, or a
-# socket -- it is exactly the wire shape in PLAN.md's "common event model",
-# plus the transcript envelope and the context-token rule three different
-# readers (the pump, the transcript, and a phone folding the same events)
-# have to agree on.
+# Wire contract shared by the server and Rust client.
 
 [dependencies]
 serde = { version = "1", features = ["derive"] }
-# `Event::ToolStart.input` is a tool's raw call arguments, whatever shape the
-# dialect gave them -- typing it further would mean this crate knowing every
-# driver's tool schema.
+# Tool input stays untyped because its schema belongs to the driver.
 serde_json = { version = "1", features = ["float_roundtrip"] }