save session metadata

codex-rs/exec/Cargo.toml

@@ -24,3 +24,6 @@ tokio = { version = "1", features = [
 ] }
 tracing = { version = "0.1.41", features = ["log"] }
 tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
+
+# For serialising the `Cli` struct into the on-disk session metadata.
+serde = { version = "1.0", features = ["derive"] }

codex-rs/exec/src/cli.rs

@@ -1,7 +1,12 @@
 use clap::Parser;
+use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
-#[derive(Parser, Debug)]
+/// Command-line interface for the non-interactive `codex-exec` agent.
+///
+/// The struct needs to be serialisable so the full invocation can be stored
+/// in the on-disk session `meta.json` for later introspection.
+#[derive(Parser, Debug, Clone, Serialize, Deserialize)]
 #[command(version)]
 pub struct Cli {
     /// Optional image(s) to attach to the initial prompt.