Writing the generated `.circleci/config.yml` failed.

Project stack: dotnet
Image: mcr.microsoft.com/dotnet/sdk:10.0
Target path: /repo/.circleci/config.yml
Error: open /repo/.circleci/config.yml: permission denied

Please help me diagnose and fix this. Common causes:
  • Write permissions on the `.circleci/` directory or its parent
  • Low disk space
  • Read-only filesystem

Once fixed, I will re-run the command to continue.
