Update app.py

app.py

@@ -28,8 +28,7 @@ except ImportError as e:
     Sam3Model = None
     Sam3Processor = None
     root_agent = None
-    AnalysisDeps = None
-    
+    AnalysisDeps = None  # <--- FIX: Indented inside except block 
 
 # Optional: Distinctipy for better colors
 try:
@@ -269,6 +268,12 @@ async def run_analysis(image_path_str, user_prompt, session_id_state):
         yield [{"role": "assistant", "content": error_msg}], None, None, [], None, waiting_df, waiting_df, waiting_df, *empty_slider_updates
         return
 
+    # FIX: Add safety check for AnalysisDeps
+    if AnalysisDeps is None:
+        error_msg = "❌ Project imports failed. 'AnalysisDeps' is missing. Check your 'cellemetry' package installation."
+        yield [{"role": "assistant", "content": error_msg}], None, None, [], None, waiting_df, waiting_df, waiting_df, *empty_slider_updates
+        return
+
     deps = AnalysisDeps(
         sam_model=MODEL_CACHE["model"],
         sam_processor=MODEL_CACHE["processor"],
@@ -298,7 +303,7 @@ async def run_analysis(image_path_str, user_prompt, session_id_state):
 
     logs = [f"🔄 **Starting analysis** on {MODEL_CACHE['device']}..."]
     
-    # FIX: Encode spaces in image path for Markdown
+    # FIX: Encode spaces for Markdown
     display_path = image_path_str.replace(" ", "%20")
 
     def yield_status(log_list):