[codex] Deduplicate invalid skill load warnings

codex-rs/tui/src/app.rs

@@ -464,6 +464,7 @@ pub(crate) struct App {
     status_line_invalid_items_warned: Arc<AtomicBool>,
     // Shared across ChatWidget instances so invalid terminal-title config warnings only emit once.
     terminal_title_invalid_items_warned: Arc<AtomicBool>,
+    skill_load_warnings_by_cwd: HashMap<PathBuf, Vec<SkillErrorInfo>>,
 
     // Esc-backtracking state grouped
     pub(crate) backtrack: crate::app_backtrack::BacktrackState,
@@ -886,6 +887,7 @@ See the Codex keymap documentation for supported actions and examples."
             commit_anim_running: Arc::new(AtomicBool::new(false)),
             status_line_invalid_items_warned: status_line_invalid_items_warned.clone(),
             terminal_title_invalid_items_warned: terminal_title_invalid_items_warned.clone(),
+            skill_load_warnings_by_cwd: HashMap::new(),
             backtrack: BacktrackState::default(),
             backtrack_render_pending: false,
             feedback: feedback.clone(),

codex-rs/tui/src/app/test_support.rs

@@ -39,6 +39,7 @@ pub(super) async fn make_test_app() -> App {
         commit_anim_running: Arc::new(AtomicBool::new(false)),
         status_line_invalid_items_warned: Arc::new(AtomicBool::new(false)),
         terminal_title_invalid_items_warned: Arc::new(AtomicBool::new(false)),
+        skill_load_warnings_by_cwd: HashMap::new(),
         backtrack: BacktrackState::default(),
         backtrack_render_pending: false,
         feedback: codex_feedback::CodexFeedback::new(),

codex-rs/tui/src/app/tests.rs

@@ -2459,6 +2459,61 @@ async fn replay_snapshot_with_pending_request_suppresses_replay_notices() {
     );
 }
 
+#[tokio::test]
+async fn repeated_skill_load_warnings_emit_once_until_errors_clear() {
+    let (mut app, mut app_event_rx, _op_rx) = make_test_app_with_channels().await;
+    let cwd = app.chat_widget.config_ref().cwd.to_path_buf();
+    let error = codex_app_server_protocol::SkillErrorInfo {
+        path: test_path_buf("/tmp/user/skills/planning/SKILL.md"),
+        message: "invalid YAML".to_string(),
+    };
+    let response = codex_app_server_protocol::SkillsListResponse {
+        data: vec![codex_app_server_protocol::SkillsListEntry {
+            cwd: cwd.clone(),
+            skills: Vec::new(),
+            errors: vec![error],
+        }],
+    };
+
+    app.handle_skills_list_response(response.clone());
+    app.handle_skills_list_response(response.clone());
+
+    assert_eq!(
+        drain_insert_history_transcripts(&mut app_event_rx),
+        vec![
+            "⚠ Skipped loading 1 skill(s) due to invalid SKILL.md files.".to_string(),
+            "⚠ /tmp/user/skills/planning/SKILL.md: invalid YAML".to_string(),
+        ],
+    );
+
+    app.handle_skills_list_response(codex_app_server_protocol::SkillsListResponse {
+        data: vec![codex_app_server_protocol::SkillsListEntry {
+            cwd,
+            skills: Vec::new(),
+            errors: Vec::new(),
+        }],
+    });
+    assert_eq!(
+        drain_insert_history_transcripts(&mut app_event_rx),
+        Vec::<String>::new(),
+    );
+
+    app.handle_skills_list_response(response);
+    assert_eq!(drain_insert_history_transcripts(&mut app_event_rx).len(), 2);
+}
+
+fn drain_insert_history_transcripts(
+    app_event_rx: &mut tokio::sync::mpsc::UnboundedReceiver<AppEvent>,
+) -> Vec<String> {
+    let mut transcripts = Vec::new();
+    while let Ok(event) = app_event_rx.try_recv() {
+        if let AppEvent::InsertHistoryCell(cell) = event {
+            transcripts.push(lines_to_single_string(&cell.transcript_lines(/*width*/ 80)));
+        }
+    }
+    transcripts
+}
+
 #[tokio::test]
 async fn side_defers_subagent_approval_overlay_until_side_exits() -> Result<()> {
     let mut app = make_test_app().await;
@@ -3803,6 +3858,7 @@ async fn make_test_app() -> App {
         commit_anim_running: Arc::new(AtomicBool::new(false)),
         status_line_invalid_items_warned: Arc::new(AtomicBool::new(false)),
         terminal_title_invalid_items_warned: Arc::new(AtomicBool::new(false)),
+        skill_load_warnings_by_cwd: HashMap::new(),
         backtrack: BacktrackState::default(),
         backtrack_render_pending: false,
         feedback: codex_feedback::CodexFeedback::new(),
@@ -3866,6 +3922,7 @@ async fn make_test_app_with_channels() -> (
             commit_anim_running: Arc::new(AtomicBool::new(false)),
             status_line_invalid_items_warned: Arc::new(AtomicBool::new(false)),
             terminal_title_invalid_items_warned: Arc::new(AtomicBool::new(false)),
+            skill_load_warnings_by_cwd: HashMap::new(),
             backtrack: BacktrackState::default(),
             backtrack_render_pending: false,
             feedback: codex_feedback::CodexFeedback::new(),

codex-rs/tui/src/app/thread_routing.rs

@@ -1319,10 +1319,29 @@ impl App {
     pub(super) fn handle_skills_list_response(&mut self, response: SkillsListResponse) {
         let cwd = self.chat_widget.config_ref().cwd.clone();
         let errors = errors_for_cwd(&cwd, &response);
-        emit_skill_load_warnings(&self.app_event_tx, &errors);
+        self.emit_skill_load_warnings_if_changed(&cwd, errors);
         self.chat_widget.handle_skills_list_response(response);
     }
 
+    fn emit_skill_load_warnings_if_changed(&mut self, cwd: &Path, errors: Vec<SkillErrorInfo>) {
+        if errors.is_empty() {
+            self.skill_load_warnings_by_cwd.remove(cwd);
+            return;
+        }
+
+        if self
+            .skill_load_warnings_by_cwd
+            .get(cwd)
+            .is_some_and(|previous_errors| previous_errors == &errors)
+        {
+            return;
+        }
+
+        emit_skill_load_warnings(&self.app_event_tx, &errors);
+        self.skill_load_warnings_by_cwd
+            .insert(cwd.to_path_buf(), errors);
+    }
+
     pub(super) async fn handle_thread_rollback_response(
         &mut self,
         thread_id: ThreadId,