fix quick try

app.py

@@ -206,6 +206,8 @@ def chat_with_model(messages, pid):
         patient_conversations[current_id] = updated_messages  
         yield updated_messages
 
+    thread.join()       
+    
     if in_think:
         output_text += "*"
 
@@ -255,25 +257,11 @@ def format_prompt(messages):
     return prompt
 
 def add_user_message(user_input, history, pid):
-    if not pid:                                  # <-- use the arg, not .value
+    if not pid:
         return "", []
-    conv = patient_conversations.get(pid, [])
-    conv.append({"role": "user", "content": user_input})
-    patient_conversations[pid] = conv
-    return "", [msg for msg in ([{
-        "role": "assistant",
-        "content": (
-            "**Welcome to the Radiologist's Companion!**\n\n"
-            "You can ask me about the patient's medical history or available imaging data.\n"
-            "- I can summarize key details from the EHR.\n"
-            "- I can tell you which medical images are available.\n"
-            "- If you'd like an organ segmentation (e.g. spleen, liver, kidney_left, colon, femur_right) on an abdominal CT scan, just ask!\n\n"
-            "**Example Requests:**\n"
-            "- \"What do we know about this patient?\"\n"
-            "- \"Which images are available for this patient?\"\n"
-            "- \"Can you segment the spleen from the CT scan?\"\n"
-        )
-    }] + conv)]
+    history.append({"role": "user", "content": user_input})
+    patient_conversations[pid] = history          # single source of truth
+    return "", history                            # no extra welcome
 
 def autofill_patient(patient_key):
     if patient_key in patient_db:
@@ -297,22 +285,23 @@ def load_patient_conversation(patient_key):
     if patient_key in patient_db:
         patient_id_val = patient_db[patient_key]["id"]
         history = patient_conversations.get(patient_id_val, [])
-
-        welcome_message = {
-            "role": "assistant",
-            "content": (
-                "**Welcome to the Radiologist's Companion!**\n\n"
-                "You can ask me about the patient's medical history or available imaging data.\n"
-                "- I can summarize key details from the EHR.\n"
-                "- I can tell you which medical images are available.\n"
-                "- If you'd like an organ segmentation (e.g. spleen, liver, kidney_left, colon, femur_right) on an abdominal CT scan, just ask!\n\n"
-                "**Example Requests:**\n"
-                "- \"What do we know about this patient?\"\n"
-                "- \"Which images are available for this patient?\"\n"
-                "- \"Can you segment the spleen from the CT scan?\"\n"
-            )
-        }
-        return [welcome_message] + history
+        if not history:
+            welcome_message = {
+                "role": "assistant",
+                "content": (
+                    "**Welcome to the Radiologist's Companion!**\n\n"
+                    "You can ask me about the patient's medical history or available imaging data.\n"
+                    "- I can summarize key details from the EHR.\n"
+                    "- I can tell you which medical images are available.\n"
+                    "- If you'd like an organ segmentation (e.g. spleen, liver, kidney_left, colon, femur_right) on an abdominal CT scan, just ask!\n\n"
+                    "**Example Requests:**\n"
+                    "- \"What do we know about this patient?\"\n"
+                    "- \"Which images are available for this patient?\"\n"
+                    "- \"Can you segment the spleen from the CT scan?\"\n"
+                )
+            }
+            history = [welcome_message]
+        return history
     return []