release-process: Add signing of tarball plus minor improvements #1709

1. 
   real-or-random commented at 10:02 am on July 22, 2025: contributor
2. release-process: Refactor 9b793ce593
3. release-process: Add signing of tarball

   Resolves #1175.

   ba25edbbe6
4. release-process: Fix nits 8f9530357b
5. release-process: Add "cleaning up" e6aa166c08
6. real-or-random added the label meta/development on Jul 22, 2025
7. real-or-random added the label release on Jul 22, 2025
8. 
   fanquake commented at 9:45 am on July 24, 2025: member

   You might be interested in this downstream discussion: https://github.com/gentoo/gentoo/pull/43104#discussion_r2224178492.

Contributors
real-or-random fanquake

Labels
meta/development release