improve the OCR pipeline processing and outputs formatting

src/ocr_pipeline/utils/migrate.py

@@ -7,9 +7,7 @@ from pathlib import Path
 from typing import Any
 
 import nbformat
-import platformdirs
 
-from ocr_pipeline.config import settings
 from ocr_pipeline.utils.logging import get_logger
 
 logger = get_logger(__name__)
@@ -104,8 +102,11 @@ def migrate_notebook(notebook_path: Path, pipeline: Any) -> dict[str, Any]:
                 continue
 
             logger.info("migrating_image", path=str(img_path))
-            pipeline.process_single(img_path)
-            results["processed"] += 1
+            output_files = pipeline.process_single(img_path)
+            if output_files:
+                results["processed"] += 1
+            else:
+                results["skipped"] += 1
 
         except Exception as e:
             logger.error("migration_failed", path=str(img_path), error=str(e))