Pin gradio SDK 5.49.1; restore transformers 4.48.3

README.md

@@ -8,6 +8,7 @@ app_file: app.py
 pinned: false
 license: cc-by-nc-sa-4.0
 python_version: "3.12"
+sdk_version: "5.49.1"
 preload_from_hub:
   - radar-generalist/RADAR checkpoint_radar_pretrain.pth,bert-base-chinese/config.json,bert-base-chinese/config_decoder.json,bert-base-chinese/pytorch_model.bin,bert-base-chinese/tokenizer.json,bert-base-chinese/tokenizer_config.json,bert-base-chinese/vocab.txt
 ---

requirements.txt

@@ -27,11 +27,11 @@ torch>=1.10.0
 torchvision
 tqdm
 # transformers 4.25 pulls tokenizers 0.13.3 (no cp312 wheel, needs Rust): keep it below 3.12 only.
-# On 3.12 the floor is 4.48 (last verified 4.x import) with no ceiling: the Space builder pins
-# gradio==6.28 which needs huggingface-hub>=1.16, and every transformers 4.x caps hub<1.0.
-# med.py carries a compat shim for the symbols transformers>=5 dropped, so 5.x resolves and imports.
+# On 3.12: transformers==4.48.3 (import + volume smoke proven twice). No 5.x: v5's own
+# from_pretrained loader crashes on this 2022-vintage BERT fork, and every 4.x caps hub<1.0
+# while the default gradio 6 needs hub>=1.16 — hence sdk_version 5.49.1 (hub>=0.33.5) above.
 transformers==4.25; python_version < '3.12'
-transformers>=4.48; python_version >= '3.12'
+transformers==4.48.3; python_version >= '3.12'
 webdataset
 wheel
 h5py