update requirements.txt

requirements.txt

@@ -1,6 +1,13 @@
+# force a source build of llama‐cpp‐python
+--no-binary llama-cpp-python
+
 gradio>=5.0
 opencv-python
 pillow
-llama-cpp-python -C cmake.args="-DGGML_BLAS=ON;-DGGML_BLAS_VENDOR=OpenBLAS"
+
+# build llama-cpp-python from source with OpenBLAS
+llama-cpp-python>=0.3.9 \
+    --config-settings="cmake.args=-DGGML_BLAS=ON;-DGGML_BLAS_VENDOR=OpenBLAS"
+
 huggingface-hub
-termcolor
+termcolor