gh30 push write wrong rev

[BenjiMilan]

This should have been a couple of PRs but is now all in one. The things changed are:

• Finish auto resolves manifests with only changes to revisions.
• Push checks out branch on all projects instead of switching manifest.
• Finish stops spamming messages to change merge commit messages.
• Start checks correctly for existing remote branch existing.
• Some other more general changes.

[Copilot]

Pull request overview

This pull request addresses issue #30 where running sc master push while on the develop branch would incorrectly write develop branch revisions to the master manifest. The fix changes the revision retrieval logic to explicitly reference the target branch's commit hash rather than using the currently checked-out commit.

Changes:

• Modified _update_manifest_revisions to use branch-specific commit hashes instead of the current HEAD commit
• Added tag pushing to the manifest repository push operation

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[TB-1993]

Fix a couple of the copilot issues then ship it!

[TB-1993]

Ship it!