feat: implement abort mechanism for workflows and subagents

src/app/runtime/actions/mod.rs

@@ -682,8 +682,9 @@ pub fn apply_action(state: &mut AppStateRest, action: Action) {
                 });
 
                 let args: HashMap<String, String> = HashMap::new();
+                let no_abort: Option<std::sync::Arc<std::sync::atomic::AtomicBool>> = None;
                 let result = crate::app::workflow::engine::run_workflow_tracked(
-                    &wf, &args, Some(&live), &session_dir, &workspace_roots,
+                    &wf, &args, &no_abort, Some(&live), &session_dir, &workspace_roots,
                 );
 
                 let (kind, message) = match result {
@@ -1082,12 +1083,14 @@ fn run_agent_turn(
             });
         }
 
+        let pipeline_abort = Some(tc.abort_flag.clone());
         let pipeline_result = if use_full {
             crate::app::workflow::company::run_company_pipeline(
                 user_request,
                 &tc.edit_log_session_dir,
                 &tc.workspace_roots,
                 Some(events_q),
+                &pipeline_abort,
             )
         } else {
             crate::app::workflow::company::run_company_pipeline_quick(
@@ -1095,6 +1098,7 @@ fn run_agent_turn(
                 &tc.edit_log_session_dir,
                 &tc.workspace_roots,
                 Some(events_q),
+                &pipeline_abort,
             )
         };
 
@@ -1127,6 +1131,16 @@ fn run_agent_turn(
         tracing::debug!("[ceo] pipeline not triggered — handling directly");
     }
 
+    // Check abort after pipeline completes, before entering main loop.
+    // This catches the case where the user pressed Esc during the pipeline
+    // phase, which previously ran unchecked for minutes at a time.
+    if tc.abort_flag.load(std::sync::atomic::Ordering::SeqCst) {
+        if let Ok(mut q) = events_q.lock() {
+            q.push_back(TurnEvent::Error("Generation aborted by user".to_string()));
+        }
+        return Ok(());
+    }
+
     let mut turn_step = 0usize;
     let mut todo_retry_count = 0usize;