Pass turn id with feedback uploads (#17314)

## Summary
- Add an optional `tags` dictionary to feedback upload params.
- Capture the active app-server turn id in the TUI and submit it as
`tags.turn_id` with `/feedback` uploads.
- Merge client-provided feedback tags into Sentry feedback tags while
preserving reserved system fields like `thread_id`, `classification`,
`cli_version`, `session_source`, and `reason`.

## Behavior / impact
Existing feedback upload callers remain compatible because `tags` is
optional and nullable. The wire shape is still a normal JSON object /
TypeScript dictionary, so adding future feedback metadata will not
require a new top-level protocol field each time. This change only adds
feedback metadata for Codex CLI/TUI uploads; it does not affect existing
pipelines, DAGs, exports, or downstream consumers unless they choose to
read the new `turn_id` feedback tag.

## Tests
- `cargo fmt -- --config imports_granularity=Item` passed; stable
rustfmt warned that `imports_granularity` is nightly-only.
- `cargo run -p codex-app-server-protocol --bin write_schema_fixtures`
- `cargo test -p codex-feedback
upload_tags_include_client_tags_and_preserve_reserved_fields`
- `cargo test -p codex-app-server-protocol
schema_fixtures_match_generated`
- `cargo test -p codex-tui build_feedback_upload_params`
- `cargo test -p codex-tui
live_app_server_turn_started_sets_feedback_turn_id`
- `cargo check -p codex-app-server --tests`
- `git diff --check`

---------

Co-authored-by: Codex <noreply@openai.com>

codex-rs/tui/src/chatwidget/tests/app_server.rs

@@ -147,6 +147,43 @@ async fn live_app_server_turn_completed_clears_working_status_after_answer_item(
     assert!(chat.bottom_pane.status_widget().is_none());
 }
 
+#[tokio::test]
+async fn live_app_server_turn_started_sets_feedback_turn_id() {
+    let (mut chat, mut rx, _op_rx) = make_chatwidget_manual(/*model_override*/ None).await;
+
+    chat.handle_server_notification(
+        ServerNotification::TurnStarted(TurnStartedNotification {
+            thread_id: "thread-1".to_string(),
+            turn: AppServerTurn {
+                id: "turn-1".to_string(),
+                items: Vec::new(),
+                status: AppServerTurnStatus::InProgress,
+                error: None,
+                started_at: Some(0),
+                completed_at: None,
+                duration_ms: None,
+            },
+        }),
+        /*replay_kind*/ None,
+    );
+
+    chat.open_feedback_note(
+        crate::app_event::FeedbackCategory::Bug,
+        /*include_logs*/ false,
+    );
+    chat.handle_key_event(KeyEvent::new(KeyCode::Enter, KeyModifiers::NONE));
+
+    assert_matches!(
+        rx.try_recv(),
+        Ok(AppEvent::SubmitFeedback {
+            category: crate::app_event::FeedbackCategory::Bug,
+            reason: None,
+            turn_id: Some(turn_id),
+            include_logs: false,
+        }) if turn_id == "turn-1"
+    );
+}
+
 #[tokio::test]
 async fn live_app_server_file_change_item_started_preserves_changes() {
     let (mut chat, mut rx, _op_rx) = make_chatwidget_manual(/*model_override*/ None).await;

codex-rs/tui/src/chatwidget/tests/helpers.rs

@@ -244,6 +244,7 @@ pub(super) async fn make_chatwidget_manual(
         pending_status_indicator_restore: false,
         suppress_queue_autosend: false,
         thread_id: None,
+        last_turn_id: None,
         thread_name: None,
         forked_from: None,
         frame_requester: FrameRequester::test_dummy(),