feat: Introduce a new desktop application for IPSExtractor, enabling extraction workflows through a React-based UI. This commit includes the application structure, API client integration, and initial components for user interaction. Enhance documentation to guide setup and usage, and update .gitignore to accommodate new files.

services/extraction/core/pdf_utils.py

@@ -1,11 +1,8 @@
-"""Utilidades para convertir documentos (PDF/TIFF) a imágenes base64.
-
-En Windows se requiere Poppler. Este proyecto incluye una ruta por defecto:
-`dependencies/poppler-24.08.0/Library/bin`. Ajuste si su instalación difiere.
-"""
+"""Utilidades para convertir documentos (PDF/TIFF) a imágenes base64."""
 import base64
 import logging
 import os
+from pathlib import Path
 from io import BytesIO
 from typing import List, Tuple, Optional
 import time
@@ -17,12 +14,24 @@ Image.MAX_IMAGE_PIXELS = None
 
 logger = logging.getLogger(__name__)
 
-_DEFAULT_POPPLER = 'dependencies/poppler-24.08.0/Library/bin'
+_SERVICE_ROOT = Path(__file__).resolve().parents[1]
+_BUNDLED_WINDOWS_POPPLER = _SERVICE_ROOT / "dependencies" / "poppler-24.08.0" / "Library" / "bin"
+_LEGACY_WINDOWS_POPPLER = Path("dependencies/poppler-24.08.0/Library/bin")
+_DOCKER_POPPLER = Path("/usr/bin")
 
 
-def _resolve_poppler(poppler_path: str | None) -> str:
-  """Devuelve la ruta a Poppler: usa la provista o el default del proyecto."""
-  return poppler_path or _DEFAULT_POPPLER
+def _resolve_poppler(poppler_path: str | None) -> str | None:
+  """Devuelve una ruta de Poppler solo si existe; si no, usa el PATH del sistema."""
+  candidates = [
+    Path(poppler_path.strip()) if poppler_path and poppler_path.strip() else None,
+    _BUNDLED_WINDOWS_POPPLER,
+    _LEGACY_WINDOWS_POPPLER,
+    _DOCKER_POPPLER,
+  ]
+  for candidate in candidates:
+    if candidate and candidate.exists():
+      return str(candidate)
+  return None
 
 
 def pdf_to_images_bs64(