Update download_model.py

Update requirements for ONNX

download_model.py

@@ -1,17 +1,33 @@
-from transformers import VisionEncoderDecoderModel, TrOCRProcessor
+from huggingface_hub import hf_hub_download
+import shutil
 import os
 
-MODEL_ID = 'anuashok/ocr-captcha-v3'
-SAVE_PATH = './model'
+print("Downloading ONNX model from toandev/OCR-for-Captcha...")
+os.makedirs("./model", exist_ok=True)
 
-print(f"Downloading {MODEL_ID}...")
-os.makedirs(SAVE_PATH, exist_ok=True)
+model_path = hf_hub_download(
+    repo_id="toandev/OCR-for-Captcha",
+    filename="model.onnx",
+    repo_type="space"
+)
 
-processor = TrOCRProcessor.from_pretrained(MODEL_ID)
-model = VisionEncoderDecoderModel.from_pretrained(MODEL_ID)
+shutil.copy(model_path, "./model/model.onnx")
+print("✅ ONNX model saved to ./model/model.onnx")
+```
 
-print("Saving to ./model...")
-processor.save_pretrained(SAVE_PATH)
-model.save_pretrained(SAVE_PATH)
+Commit message: `"Download ONNX model at build time"`
 
-print("✅ Model saved successfully")
+---
+
+## File 4 of 6 — `requirements.txt`
+
+Files tab → click `requirements.txt` → ✏️ edit → replace everything:
+```
+fastapi
+uvicorn
+torch
+torchvision
+onnx
+onnxruntime
+Pillow
+huggingface_hub