OCR de imagenes con Mistral: ImageProcessor (png/jpg/webp/gif/bmp/tiff), modelo mistral-ocr-latest y recuperacion de fuentes unknown

backend/app/services/providers/mistral_client.py

@@ -36,6 +36,17 @@ class MistralClient:
     files_url = f"{base_url}/files"
     batch_url = f"{base_url}/batch/jobs"
 
+    _IMAGE_MIME_BY_EXT = {
+        ".png": "image/png",
+        ".jpg": "image/jpeg",
+        ".jpeg": "image/jpeg",
+        ".webp": "image/webp",
+        ".gif": "image/gif",
+        ".bmp": "image/bmp",
+        ".tif": "image/tiff",
+        ".tiff": "image/tiff",
+    }
+
     def __init__(self) -> None:
         self._api_key = settings.mistral_api_key
         self._model = settings.mistral_ocr_model
@@ -285,4 +296,5 @@ class MistralClient:
 
     def _image_data_url(self, image_path: Path) -> str:
         encoded = base64.b64encode(image_path.read_bytes()).decode("ascii")
-        return f"data:image/jpeg;base64,{encoded}"
+        mime = self._IMAGE_MIME_BY_EXT.get(image_path.suffix.lower(), "image/jpeg")
+        return f"data:{mime};base64,{encoded}"