feat: Update default models for extraction and normalization to GPT-5.6 Luna across configuration files and documentation. Remove deprecated code and improve pricing details in the UI components. Add tests to ensure correct model settings and pricing calculations.

services/extraction/domain/service.py

@@ -21,7 +21,6 @@ from .batch_processor import BatchProcessor
 from .estimator import Estimator
 from core.pdf_utils import document_to_images_bs64
 from core.text_utils import extract_json_from_text, build_schema
-from core.utils import find_first_matching_file
 
 logger = logging.getLogger(__name__)
 
@@ -49,11 +48,6 @@ class InvoiceProcessingService:
     
     # Lock para escrituras concurrentes al mismo CSV desde múltiples hilos
     # (Mantenido por retrocompatibilidad si se accede directo, aunque BatchProcessor usa su propio CSVManager)
-    try:
-      import threading
-      self._csv_lock = threading.Lock()
-    except Exception:
-      self._csv_lock = None
 
   def _convert_to_images(self, pdf_path: str, dpi: int, thread_count: int, tiff_pages: Optional[Tuple[int, int]], tiff_page_range: Optional[Tuple[int, int]]) -> List[str]:
     """