Potential GitHub/git commit, branch & tag protections:

Tags

• Redo version tags without v prefix?
  • Tags (mas-cli/mas & mas-cli/homebrew-tap)
  • GitHub Releases (mas-cli/mas & mas-cli/homebrew-tap)
    • Tag
    • Name
    • Body
  • Custom tap formula (mas-cli/mas & mas-cli/homebrew-tap)
  • homebrew-core formula
  • …?
• Configure & enable tag ruleset
• Disallow changing version tags.
• Ensure that each new release tag has one & only one semantic version component that is one greater than some other prior release version, followed by zeros for all subsequent components, with an optional -beta.1 suffix.
  • So, the following version transitions are OK:
    • 5.6.7 -> 6.0.0
    • 5.6.7 -> 5.7.0
    • 5.6.7 -> 5.6.8
    • 5.6.7 -> 5.6.8-beta.1
    • 5.6.7-beta.1 -> 5.6.7-beta.2
  • While the following version transitions are not OK:
    • (no stable 5.* exists) -> 6.0.0
    • (no stable 5.6.* exists) -> 5.7.0
    • (no stable 5.6.7.* exists) -> 5.6.8
    • (no stable 5.6.7.* exists) -> 5.6.8-beta.1
    • (no 5.6.7-beta.1 exists) -> 5.6.7-beta.2
• Allow creating version tags outside main only if we create patches for legacy versions if newer versions require a newer macOS, in which case we'd:
  • Create a legacy version patch branch rooted on the version-tagged main revision that is being patched.
  • Require that the branch be named following a convention relating it to the version tag.
  • Require that all version tags on the patch branch monotonically increasing patch versions, e.g.:
    • Version tag: v1.8.6
    • Patch branch: b1.8.6 (b for branch), or possibly p1.8.6 (p for patch), or something similar
    • Acceptable patch tags on b1.8.6:
      • v1.8.6.1-alpha.1
      • v1.8.6.1-beta.1
      • v1.8.6.1-beta.2
      • v1.8.6.1
      • v1.8.6.2
      • …
    • Rejected tags for p1.8.6:
      • v1.8.5
      • v1.8.7
      • v1.9.0
      • v2.0.0

Commits:

• Require signed commits?
• Require commit sign offs?
• Require Resolve #… in last PR commit message?
• Require Partial #… in prior PR commit messages?

Done

• Require signed annotated tags
  • Enforced by .githubs/workflows/tag-pushed.yml.
  • Doesn't use tag.gpgSign.
• Disallow creating version tags outside main.