Update app.py

app.py

@@ -163,6 +163,8 @@ with tab1:
                 except Exception:
                     continue
                     
+from urllib.parse import quote  # ✅ Make sure this is at the top of your file
+
 # ------------------ Tab 2: Visual Reference Search ------------------
 with tab2:
     st.title("🔍 Visual Reference Search")
@@ -220,7 +222,7 @@ with tab2:
         filename_matches = re.findall(r'Image Filename:\s*(.*?\.png)', st.session_state.image_response)
 
         for fname in filename_matches:
-            # Extract folder from prefix before _page_
+            # Extract folder from filename prefix before _page_
             match = re.match(r'^(.+?)_page_', fname)
             if match:
                 folder = match.group(1).strip()
@@ -228,13 +230,9 @@ with tab2:
                 st.warning(f"⚠️ Could not determine folder for: {fname}")
                 continue
 
-            # Correct GitHub encoding: encode spaces AND parentheses
-            encoded_folder = (
-                folder.replace(" ", "%20")
-                      .replace("(", "%28")
-                      .replace(")", "%29")
-            )
-            encoded_fname = fname.replace(" ", "%20")
+            # ✅ Use URL-safe encoding for both folder and filename
+            encoded_folder = quote(folder)
+            encoded_fname = quote(fname)
 
             url = f"https://raw.githubusercontent.com/AndrewLORTech/witspathologaihisto/main/{encoded_folder}/{encoded_fname}"