Generate more typescript types and return conversation id with ConversationSummary (#3219)

This PR does multiple things that are necessary for conversation resume
to work from the extension. I wanted to make sure everything worked so
these changes wound up in one PR:
1. Generate more ts types
2. Resume rollout history files rather than create a new one every time
it is resumed so you don't see a duplicate conversation in history for
every resume. Chatted with @aibrahim-oai to verify this
3. Return conversation_id in conversation summaries
4. [Cleanup] Use serde and strong types for a lot of the rollout file
parsing

codex-rs/core/tests/suite/cli_stream.rs

@@ -388,8 +388,7 @@ async fn integration_creates_and_checks_session_file() {
         "No message found in session file containing the marker"
     );
 
-    // Second run: resume should create a NEW session file that contains both old and new history.
-    let orig_len = content.lines().count();
+    // Second run: resume should update the existing file.
     let marker2 = format!("integration-resume-{}", Uuid::new_v4());
     let prompt2 = format!("echo {marker2}");
     // Cross‑platform safe resume override.  On Windows, backslashes in a TOML string must be escaped
@@ -449,8 +448,8 @@ async fn integration_creates_and_checks_session_file() {
     }
 
     let resumed_path = resumed_path.expect("No resumed session file found containing the marker2");
-    // Resume should have written to a new file, not the original one.
-    assert_ne!(
+    // Resume should write to the existing log file.
+    assert_eq!(
         resumed_path, path,
         "resume should create a new session file"
     );
@@ -464,14 +463,6 @@ async fn integration_creates_and_checks_session_file() {
         resumed_content.contains(&marker2),
         "resumed file missing resumed marker"
     );
-
-    // Original file should remain unchanged.
-    let content_after = std::fs::read_to_string(&path).unwrap();
-    assert_eq!(
-        content_after.lines().count(),
-        orig_len,
-        "original rollout file should not change on resume"
-    );
 }
 
 /// Integration test to verify git info is collected and recorded in session files.

codex-rs/core/tests/suite/client.rs

@@ -15,6 +15,7 @@ use core_test_support::wait_for_event;
 use serde_json::json;
 use std::io::Write;
 use tempfile::TempDir;
+use uuid::Uuid;
 use wiremock::Mock;
 use wiremock::MockServer;
 use wiremock::ResponseTemplate;
@@ -122,11 +123,10 @@ async fn resume_includes_initial_messages_and_sends_prior_items() {
     let tmpdir = TempDir::new().unwrap();
     let session_path = tmpdir.path().join("resume-session.jsonl");
     let mut f = std::fs::File::create(&session_path).unwrap();
-    // First line: meta (content not used by reader other than non-empty)
     writeln!(
         f,
         "{}",
-        serde_json::json!({"meta":"test","instructions":"be nice"})
+        json!({"meta":"test","instructions":"be nice", "id": Uuid::new_v4(), "timestamp": "2024-01-01T00:00:00Z"})
     )
     .unwrap();
 
@@ -202,7 +202,7 @@ async fn resume_includes_initial_messages_and_sends_prior_items() {
         .clone()
         .expect("expected initial messages for resumed session");
     let initial_json = serde_json::to_value(&initial_msgs).unwrap();
-    let expected_initial_json = serde_json::json!([
+    let expected_initial_json = json!([
         { "type": "user_message", "message": "resumed user message", "kind": "plain" },
         { "type": "agent_message", "message": "resumed assistant message" }
     ]);
@@ -221,7 +221,7 @@ async fn resume_includes_initial_messages_and_sends_prior_items() {
 
     let request = &server.received_requests().await.unwrap()[0];
     let request_body = request.body_json::<serde_json::Value>().unwrap();
-    let expected_input = serde_json::json!([
+    let expected_input = json!([
         {
             "type": "message",
             "role": "user",
@@ -967,7 +967,7 @@ async fn history_dedupes_streamed_and_final_messages_across_turns() {
     assert_eq!(requests.len(), 3, "expected 3 requests (one per turn)");
 
     // Replace full-array compare with tail-only raw JSON compare using a single hard-coded value.
-    let r3_tail_expected = serde_json::json!([
+    let r3_tail_expected = json!([
         {
             "type": "message",
             "role": "user",