debug: add detailed import debugging for src.models

app.py

@@ -23,6 +23,21 @@ try:
     import src
 
     print(f"✓ src package found at: {src.__file__}")
+
+    # Try to import subpackages
+    try:
+        import src.models
+
+        print(f"✓ src.models found at: {src.models.__file__}")
+    except ImportError as e:
+        print(f"✗ src.models failed: {e}")
+        import os
+
+        models_path = os.path.join(os.path.dirname(src.__file__), "models")
+        print(f"  models dir exists: {os.path.exists(models_path)}")
+        if os.path.exists(models_path):
+            print(f"  models contents: {os.listdir(models_path)[:5]}")
+
 except ImportError as e:
     print(f"✗ Failed to import src: {e}")
     print(f"sys.path: {sys.path[:3]}")