Update app.py

app.py

@@ -63,8 +63,11 @@ tab1, tab2 = st.tabs(["💬 Chat Assistant", "🖼️ Visual Reference Search"])
 
 # ------------------ Tab 1: Chat Assistant ------------------
 with tab1:
-    with st.sidebar:
-        st.header("🧪 Pathology Tools")
+    st.markdown("## 💬 Ask a Pathology-Specific Question")
+    col1, col2 = st.columns([2, 1])
+
+    with col2:
+        st.markdown("### 🔧 Tools")
         if st.button("🧹 Clear Chat"):
             st.session_state.messages = []
             st.session_state.thread_id = None
@@ -78,25 +81,21 @@ with tab1:
             st.session_state.pending_prompt = f"Find clauses or references related to: {keyword}"
 
         section = st.text_input("Section Lookup", placeholder="e.g. Connective Tissue")
-        if section:
+        if st.button("📑 Lookup") and section:
             st.session_state.pending_prompt = f"Summarize or list key points from section: {section}"
 
-        actions = [
+        action = st.selectbox("📂 Common Pathology Queries", [
             "Select an action...",
             "List histological features of inflammation",
             "Summarize features of carcinoma",
             "List muscle types and features",
             "Extract diagnostic markers",
             "Summarize embryology stages"
-        ]
-        action = st.selectbox("Common Pathology Queries", actions)
-        if action != actions[0]:
+        ])
+        if action != "Select an action...":
             st.session_state.pending_prompt = action
 
-    chat_col, image_col = st.columns([2, 1])
-
-    with chat_col:
-        st.markdown("### 💬 Ask a Pathology-Specific Question")
+    with col1:
         user_input = st.chat_input("Example: What are features of squamous cell carcinoma?")
         if user_input:
             st.session_state.messages.append({"role": "user", "content": user_input})
@@ -133,16 +132,9 @@ with tab1:
                     for m in reversed(messages.data):
                         if m.role == "assistant":
                             reply = m.content[0].text.value.strip()
-                            is_duplicate = any(
-                                reply in msg["content"] or msg["content"] in reply
-                                for msg in st.session_state.messages if msg["role"] == "assistant"
-                            )
-                            if not is_duplicate:
+                            if not any(reply in msg["content"] or msg["content"] in reply for msg in st.session_state.messages if msg["role"] == "assistant"):
                                 st.session_state.messages.append({"role": "assistant", "content": reply})
-                                image_matches = re.findall(
-                                    r'https://raw\.githubusercontent\.com/AndrewLORTech/witspathologai/main/[^\s\n"]+\.png',
-                                    reply
-                                )
+                                image_matches = re.findall(r'https://raw\.githubusercontent\.com/AndrewLORTech/witspathologai/main/[^\s\n"]+\.png', reply)
                                 st.session_state.image_urls = image_matches
                             break
                 else:
@@ -155,9 +147,8 @@ with tab1:
             with st.chat_message(msg["role"]):
                 st.markdown(msg["content"], unsafe_allow_html=True)
 
-    with image_col:
-        if show_image and st.session_state.image_urls:
-            st.markdown("### 🖼️ Image(s)")
+    if show_image and st.session_state.image_urls:
+        with st.expander("🖼️ Referenced Image(s)", expanded=True):
             for raw_url in st.session_state.image_urls:
                 try:
                     r = requests.get(raw_url, timeout=5)