v0.3.21

What's Changed

• backmerge: sync v0.3.20 main into develop by @metasession-dev in #488
• fix(ci): harden standalone release evidence admission by @metasession-dev in #494
• fix(release): report tracked close-out completion by @metasession-dev in #496
• release: promote #491 SDLC release-control fixes by @metasession-dev in #497
• chore(release): bump packages to 0.3.21 by @metasession-dev in #498
• release: promote DevAudit Installer 0.3.21 by @metasession-dev in #499

Full Changelog: v0.3.20...v0.3.21