fix: Windows构建编码问题 - 设置PYTHONIOENCODING环境变量

Author: mason369

.github/workflows/build-executables.yml

@@ -31,7 +31,9 @@ jobs:
 
     - name: Download base models
       run: |
+        $env:PYTHONIOENCODING="utf-8"
         python tools/download_models.py
+      shell: pwsh
 
     - name: Build Windows executable
       run: |