Upload app.py

app.py

@@ -1631,6 +1631,7 @@ def _toolbar_fragment():
                 if st.button(m, key=f"mdl_{m}", use_container_width=True, type=_btn_type):
                     if m != _current_model:
                         st.session_state["sel_model"] = m
+                        st.rerun()
 
     with _btn_cols[1]:
         if IS_GUEST:
@@ -1639,6 +1640,7 @@ def _toolbar_fragment():
             _web_label = "🌐 联网模式" if _web_status else "📚 知识库"
         if st.button(_web_label, key="toggle_web", use_container_width=True):
             st.session_state["sel_web"] = not _web_status
+            st.rerun()
 
 _toolbar_fragment()