fix: stop thread

src/main.py

@@ -234,7 +234,11 @@ class BavarderApplication(Adw.Application):
             if not self.setup_chat(): # NO MODELS:
                 return _("Please download a model from Preferences by clicking on the Dot Menu at the top!")
             else:
-                with self.model.chat_session():
+                for p in ["Hi", "Hello"]:
+                    if p.lower() in prompt.lower():
+                        return _("Hello, I am Bavarder, a Chit-Chat AI")
+                system_template = """A chat between a curious user and an artificial intelligence assistant."""
+                with self.model.chat_session(system_template):
                     self.model.current_chat_session = chat["content"].copy()
                 response = self.model.generate(prompt=prompt, top_k=1)
         else:

src/threading.py

@@ -25,7 +25,7 @@ class KillableThread(threading.Thread):
     def localtrace(self, frame, event, arg):
         if self.killed:
             if event == 'line':
-                raise SystemExit()
+                raise Exception("Killed")
         return self.localtrace
 
     def kill(self):

src/views/window.py

@@ -374,8 +374,8 @@ class BavarderWindow(Adw.ApplicationWindow):
             del self.t
             self.toast.dismiss()
         except AttributeError: # nothing to stop
-            print("Nothing to stop")
-        except SystemExit:
+            pass
+        except Exception:
             self.t.join()
             del self.t
             self.toast.dismiss()