Fix Linux packaging tarball self-inclusion in CI

[Copilot]

Linux packaging in CI failed because the tarball was created inside the publish directory, causing tar to read a changing file and exit. This updates the workflow to emit the archive outside the source directory.

• Workflow: Linux packaging
  • Create the tarball in ${{ github.workspace }}/publish instead of inside publish/linux-x64.
  • Update the upload-artifact path to match the new tarball location.

tar --delay-directory-restore -czf ${{ github.workspace }}/publish/todo-linux-x64-${{ github.run_id }}.tar.gz \
  -C ${{ github.workspace }}/publish/linux-x64 .

Original prompt

Reference: https://github.com/evilz/todo-cli/actions/runs/21710371862/job/62612161882

fix the linux packaging

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[Copilot]

Pull request overview

This PR fixes a CI failure in the Linux packaging workflow where the tarball was being created inside the directory being archived, causing tar to fail when reading a changing file. The fix moves the tarball creation to an external location using the -C flag to change into the source directory during archiving.

Changes:

• Modified the Linux packaging tarball creation to output the archive file outside the source directory
• Updated the artifact upload path to reference the new tarball location

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