fix: add test that verifies that codex-exec-mcp-server starts up

codex-rs/exec-server/src/lib.rs

@@ -6,3 +6,6 @@ pub use posix::main_execve_wrapper;
 
 #[cfg(unix)]
 pub use posix::main_mcp_server;
+
+#[cfg(unix)]
+pub use posix::ExecResult;

codex-rs/exec-server/src/posix.rs

@@ -82,6 +82,8 @@ mod mcp_escalation_policy;
 mod socket;
 mod stopwatch;
 
+pub use mcp::ExecResult;
+
 /// Default value of --execve option relative to the current executable.
 /// Note this must match the name of the binary as specified in Cargo.toml.
 const CODEX_EXECVE_WRAPPER_EXE_NAME: &str = "codex-execve-wrapper";

codex-rs/exec-server/src/posix/mcp.rs

@@ -54,7 +54,7 @@ pub struct ExecParams {
     pub login: Option<bool>,
 }
 
-#[derive(Debug, serde::Serialize, schemars::JsonSchema)]
+#[derive(Debug, serde::Serialize, serde::Deserialize, schemars::JsonSchema)]
 pub struct ExecResult {
     pub exit_code: i32,
     pub output: String,