fix: force-disable oneDNN via paddle.set_flags and enable_mkldnn=False

Previous FLAGS_use_mkldnn env var was ignored by PaddlePaddle 3.x.
Now using paddle.set_flags() API and PaddleOCR enable_mkldnn param.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

paddleocr-service/main.py

@@ -8,8 +8,16 @@ import threading
 # Disable oneDNN/MKLDNN before importing paddle — avoids
 # ConvertPirAttribute2RuntimeAttribute errors on PaddlePaddle 3.x
 os.environ["FLAGS_use_mkldnn"] = "0"
+os.environ["FLAGS_use_onednn"] = "0"
 os.environ["PADDLE_PDX_DISABLE_MODEL_SOURCE_CHECK"] = "1"
 
+# Must set paddle flags before import
+try:
+    import paddle
+    paddle.set_flags({"FLAGS_use_mkldnn": False})
+except Exception:
+    pass
+
 import numpy as np
 from fastapi import FastAPI, File, Header, HTTPException, UploadFile
 from PIL import Image
@@ -35,7 +43,9 @@ def _load_model():
         logger.info("Import done. Loading PaddleOCR model...")
         # Try multiple init strategies for different PaddleOCR versions
         inits = [
-            # PaddleOCR 3.x — use_textline_orientation replaces use_angle_cls
+            # PaddleOCR 3.x — disable MKLDNN via enable_mkldnn=False
+            dict(lang="en", ocr_version="PP-OCRv5", use_textline_orientation=True, enable_mkldnn=False),
+            # PaddleOCR 3.x without enable_mkldnn param
             dict(lang="en", ocr_version="PP-OCRv5", use_textline_orientation=True),
             # PaddleOCR 3.x with deprecated param
             dict(lang="en", ocr_version="PP-OCRv5", use_angle_cls=True),