fix: clear stale in-flight state

crates/tui/src/app.rs

@@ -1030,6 +1030,12 @@ impl App {
                     "LLM stream interrupted; continuing generation ({attempt}/{max_attempts}): {reason}"
                 ));
             }
+            Event::InFlightCleared => {
+                self.assistant_streaming = false;
+                self.latest_llm_wait_event = None;
+                self.mark_orphan_tool_calls_incomplete();
+                self.current_tool = None;
+            }
             Event::TextDelta { text } => {
                 self.latest_llm_wait_event = None;
                 self.append_assistant_text(&text);