Separate interactive and non-interactive sessions (#4612)

Do not show exec session in VSCode/TUI selector.

codex-rs/core/src/rollout/mod.rs

@@ -1,7 +1,11 @@
 //! Rollout module: persistence and discovery of session rollout files.
 
+use codex_protocol::protocol::SessionSource;
+
 pub const SESSIONS_SUBDIR: &str = "sessions";
 pub const ARCHIVED_SESSIONS_SUBDIR: &str = "archived_sessions";
+pub const INTERACTIVE_SESSION_SOURCES: &[SessionSource] =
+    &[SessionSource::Cli, SessionSource::VSCode];
 
 pub mod list;
 pub(crate) mod policy;