fix: OCR 区分 UNSUPPORTED(rejected) 和 ERROR(临时失败)

flows/label_ocr.py

@@ -28,6 +28,9 @@ _OCR_FIELD_MAP = [
 
 def _result_to_fields(r) -> dict[str, str | None]:
     if not r.ok:
+        err = (r.error or "").lower()
+        if "reject" in err or "not a recognized layout" in err:
+            return {"ocrLayout": "UNSUPPORTED"}
         return {"ocrLayout": "ERROR"}
     return {col: (getattr(r, attr) or "") for attr, col in _OCR_FIELD_MAP}