fix(domain,application,infrastructure,backend,app-tauri,frontend): Stop demande agent préserve la conversation ouverte — arrêt sans fermeture/clôture du chat, états cohérents après cancel sur les 3 adapters de session, cellule et workstate synchronisés — #343 (QA verte)

crates/application/tests/workstate_actions.rs

@@ -117,11 +117,17 @@ impl AgentSession for FakeSession {
     async fn send(&self, _prompt: &str) -> Result<ReplyStream, AgentSessionError> {
         Ok(Box::new(std::iter::empty()))
     }
-    async fn cancel_current_turn(&self) -> Result<(), AgentSessionError> {
+    async fn cancel_current_turn(
+        &self,
+    ) -> Result<domain::ports::CancelCurrentTurnOutcome, AgentSessionError> {
         self.cancel_called.store(true, Ordering::SeqCst);
-        Ok(())
+        Ok(domain::ports::CancelCurrentTurnOutcome::Cancelled)
     }
     async fn shutdown(&self) -> Result<(), AgentSessionError> {
+        assert!(
+            self.cancel_called.load(Ordering::SeqCst),
+            "shutdown must be preceded by cancel_current_turn"
+        );
         self.shutdown_called.store(true, Ordering::SeqCst);
         Ok(())
     }
@@ -530,7 +536,7 @@ async fn stop_structured_shuts_down_and_removes_session() {
     assert_eq!(out.stopped[0].session_id, sid(2));
     assert_eq!(out.stopped[0].kind, LiveSessionKind::Structured);
     assert_eq!(out.stopped[0].state, LiveRuntimeState::Stopped);
-    assert!(!cancel_called.load(Ordering::SeqCst));
+    assert!(cancel_called.load(Ordering::SeqCst));
     assert!(
         shutdown_called.load(Ordering::SeqCst),
         "session.shutdown() must be called"
@@ -567,8 +573,8 @@ async fn stop_structured_runs_execution_cascade_before_shutdown() {
     assert_eq!(out.stopped[0].session_id, sid(2));
     assert_eq!(*cascade.calls.lock().unwrap(), vec![(project().id, a)]);
     assert!(
-        !cancel_called.load(Ordering::SeqCst),
-        "session.cancel_current_turn() is not the runtime stop primitive"
+        cancel_called.load(Ordering::SeqCst),
+        "hard stop must cancel the current turn before shutdown"
     );
     assert!(
         shutdown_called.load(Ordering::SeqCst),