
### Bonus: Tự động publish bằng GitHub Actions

Tạo file `.github/workflows/publish.yml`:

```yaml
name: Publish

on:
  push:
    tags:
      - "v*"

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: rust-lang/rustup@v1
      - run: cargo publish --token ${{ secrets.CARGO_REGISTRY_TOKEN }}
