Update app.py

app.py

@@ -227,10 +227,19 @@ with tab2:
                     if msg.role == "assistant":
                         content = msg.content[0].text.value
                         st.session_state.tech_messages.append({"role": "assistant", "content": content})
+
+                        # Always clear previous results
+                        st.session_state.tech_results = []
+
                         try:
-                            st.session_state.tech_results = json.loads(content.strip("`json "))
-                        except:
-                            st.session_state.tech_results = []
+                            parsed = json.loads(content.strip("`json ").strip())
+                            if isinstance(parsed, list):
+                                st.session_state.tech_results = parsed
+                            else:
+                                st.warning("Assistant response was not a valid list of results.")
+                        except Exception as parse_error:
+                            st.warning("⚠️ Failed to parse assistant response as JSON.")
+                            st.code(content, language="markdown")
                         break
         except Exception as e:
             st.error(f"❌ Technical Assistant Error: {e}")
@@ -266,3 +275,4 @@ with tab2:
         for msg in st.session_state.tech_messages:
             with st.chat_message(msg["role"]):
                 st.markdown(msg["content"], unsafe_allow_html=True)
+        st.info("No drawing results found for the last query. Try rephrasing or narrowing the search.")