fix: silence false-positive ruff lint warnings in Python scripts

scripts/caption_processor.py

@@ -82,9 +82,9 @@ def generate_caption_with_llava(
     """Generate caption using LLaVA model"""
     try:
         # Try to use transformers with LLaVA
-        from transformers import AutoProcessor, AutoModelForVision2Seq
-        import torch
-        from PIL import Image
+        from transformers import AutoProcessor, AutoModelForVision2Seq  # noqa: F401
+        import torch  # noqa: F401
+        from PIL import Image  # noqa: F401
 
         # Note: This requires llava-hf/llava-1.5-7b-hf or similar
         # For now, return a placeholder