Keep the Homebrew cask's layout and version template when bumping it

[leoisadev1]

Summary

The release bot's 0.3.0 cask bump (5763e6c) dropped the blank line after sha256 and wrote the url with a literal v0.3.0. brew style rejects that (Cask/StanzaGrouping), so the "Rust (macOS, core)" CI job now fails on every PR that includes main. The bump's patterns ended in \s* under re.M, which also matches the newline and the blank line after. They now stop at the end of the line, and a GitHub release url keeps #{version}.

   sha256 "97784e…"
-  url "https://github.com/opencoredev/convt/releases/download/v0.3.0/convt-macos-arm64.dmg",
+
+  url "https://github.com/opencoredev/convt/releases/download/v#{version}/convt-macos-arm64.dmg",

Evidence

• Before: CI on Redesign the convt desktop app UI on one visual system #68 failed brew style with "stanza groups should be separated by a single empty line".
  After: Run on the original 0.2.0 cask with the 0.3.0 manifest values, the fixed bump produces exactly the restored Casks/convt.rb.
• New tests test_bump_changes_only_the_version_and_sha_lines and test_a_github_release_url_keeps_its_version_template fail on the old script and pass now. All 44 release-script tests pass.
• brew style itself only runs on macOS, so the macOS CI job on this PR is the check for it.

Merge Danger

Door: two-way. It changes a release script and the cask file; nothing is published by merging. The next release's bump uses the fixed script.

Blast radius: the Homebrew cask and its bump in the release workflow.

Fixes CNV-63

Created with Claude Opus 5.5 in Claude Code.

---

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; no actionable issues were found.

What we checked:

• Release bumps keep blank lines: The new expressions stop before newlines. Replacing the version and checksum leaves the separator intact.
• Matching release URLs stay templated: bump_cask keeps the template when substituting the new version produces the supplied URL. Different URLs still replace it.

Summary

This PR restores the Homebrew cask’s blank separator and #{version} URL. It updates the release script so later bumps keep both.

• Spaces and tabs can no longer consume the newline after version or sha256.
• A URL template stays unchanged when it resolves to the manifest’s URL.
• New tests cover line preservation and the GitHub URL template.
• No actionable issues found. Tests and brew style were not run during this review.

_{Reviews (1) · Last reviewed commit: "Keep the Homebrew cask's layout and vers..." · Reviewed by Greptile}

[greptile-apps]

Confidence Score: 5/5

[Medium risk] Changes how the release script updates the Homebrew cask file.

The PR appears safe to merge; no actionable issues were found.

What we checked:

• Release bumps keep blank lines: The new expressions stop before newlines. Replacing the version and checksum leaves the separator intact.
• Matching release URLs stay templated: bump_cask keeps the template when substituting the new version produces the supplied URL. Different URLs still replace it.

Summary

This PR restores the Homebrew cask’s blank separator and #{version} URL. It updates the release script so later bumps keep both.

• Spaces and tabs can no longer consume the newline after version or sha256.
• A URL template stays unchanged when it resolves to the manifest’s URL.
• New tests cover line preservation and the GitHub URL template.
• No actionable issues found. Tests and brew style were not run during this review.

_{Reviews (1) · Last reviewed commit: "Keep the Homebrew cask's layout and vers..." · Reviewed by Greptile}