Fix syntax and deduplicate gallery loader

ui/layout.py

@@ -10,22 +10,21 @@ def build_ui(event_handler_function):
     ui_components = {}
 
     # Helper function to load thumbnails from the output folder.
-+    # Helper function to load thumbnails from the output folder.
-+    # It returns a **deduplicated** list of absolute image file paths.
-+    # Using a set ensures that even if the same filename appears multiple
-+    # times (e.g., due to accidental duplicate saves), the Gallery tab will
-+    # only display each image once.
-+    def load_gallery_images():
-+        output_dir = os.path.abspath(OUTPUT_DIR)
-+        if not os.path.isdir(output_dir):
-+            return []
-+        # Use a set to collect unique absolute paths.
-+        image_path_set = set()
-+        for fname in sorted(os.listdir(output_dir)):
-+            if fname.lower().endswith((".png", ".jpg", ".jpeg", ".gif", ".webp")):
-+                image_path_set.add(os.path.join(output_dir, fname))
-+        # Convert back to a sorted list for deterministic ordering.
-+        return sorted(image_path_set)
+    # It returns a **deduplicated** list of absolute image file paths.
+    # Using a set ensures that even if the same filename appears multiple
+    # times (e.g., due to accidental duplicate saves), the Gallery tab will
+    # only display each image once.
+    def load_gallery_images():
+        output_dir = os.path.abspath(OUTPUT_DIR)
+        if not os.path.isdir(output_dir):
+            return []
+        # Use a set to collect unique absolute paths.
+        image_path_set = set()
+        for fname in sorted(os.listdir(output_dir)):
+            if fname.lower().endswith((".png", ".jpg", ".jpeg", ".gif", ".webp")):
+                image_path_set.add(os.path.join(output_dir, fname))
+        # Convert back to a sorted list for deterministic ordering.
+        return sorted(image_path_set)
 
     # All UI components, including tabs, must be created inside the same Gradio Blocks context.
     with gr.Blocks() as demo: