ci: skip publish step if no release is needed

[zimeg]

Summary

• Adds a check after the changesets step to see if all workspace packages already have GitHub releases for their current versions
• Skips the publish job when releases already exist, avoiding unnecessary approval requests

Notes

This mirrors the release process found in bolt-js: slackapi/bolt-js#2894

Adapted for the monorepo — iterates over all workspaces and checks each package's release tag (@slack/package@version) rather than a single v${VERSION} tag.

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

🤖 Generated with Claude Code

Co-Authored-By: Claude svc-devxp-claude@slack-corp.com

[changeset-bot]

⚠️ No Changeset found

Latest commit: 775f3bd

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.41%. Comparing base (d5fc190) to head (775f3bd).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2561   +/-   ##
=======================================
  Coverage   87.41%   87.41%           
=======================================
  Files          62       62           
  Lines       10251    10251           
  Branches      415      415           
=======================================
  Hits         8961     8961           
  Misses       1269     1269           
  Partials       21       21           

Flag	Coverage Δ
cli-hooks	87.41% <ø> (ø)
cli-test	87.41% <ø> (ø)
logger	87.41% <ø> (ø)
oauth	87.41% <ø> (ø)
socket-mode	87.41% <ø> (ø)
web-api	87.41% <ø> (ø)
webhook	87.41% <ø> (ø)

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[zimeg]

🦠 A note on more complicated changes than adjacent workflows. If that's alright-

[zimeg]

👾 note: This is more complex for a workspace approach but should still let through a new package!

🧪 note: Tested with this change to find various truth values:

  "name": "@slack/web-api",
- "version": "7.15.1",
+ "version": "7.15.2",

[srtaalej]

lgtm ⭐

[zimeg]

@srtaalej Woot! Let's continue toward a faster release process and smoother non-releases adjacent. I will merge this.