fixed refactored code

src/embeddingbuddy/ui/components/sidebar.py

@@ -11,14 +11,18 @@ class SidebarComponent:
         return dbc.Col(
             [
                 html.H5("Upload Data", className="mb-3"),
+                self.upload_component.create_error_alert(),
+                self.upload_component.create_success_alert(),
                 self.upload_component.create_data_upload(),
                 self.upload_component.create_prompts_upload(),
                 self.upload_component.create_reset_button(),
                 html.H5("Visualization Controls", className="mb-3"),
-                self._create_method_dropdown(),
-                self._create_color_dropdown(),
-                self._create_dimension_toggle(),
-                self._create_prompts_toggle(),
+            ]
+            + self._create_method_dropdown()
+            + self._create_color_dropdown()
+            + self._create_dimension_toggle()
+            + self._create_prompts_toggle()
+            + [
                 html.H5("Point Details", className="mb-3"),
                 html.Div(
                     id="point-details", children="Click on a point to see details"

src/embeddingbuddy/ui/components/upload.py

@@ -51,3 +51,25 @@ class UploadComponent:
             className="mb-3",
             style={"width": "100%"},
         )
+
+    @staticmethod
+    def create_error_alert():
+        """Create error alert component for data upload issues."""
+        return dbc.Alert(
+            id="upload-error-alert",
+            dismissable=True,
+            is_open=False,
+            color="danger",
+            className="mb-3",
+        )
+
+    @staticmethod
+    def create_success_alert():
+        """Create success alert component for successful uploads."""
+        return dbc.Alert(
+            id="upload-success-alert",
+            dismissable=True,
+            is_open=False,
+            color="success",
+            className="mb-3",
+        )