fix: only count preview branches toward the preview branch limit

[carderne]

Problem

On the org Manage/Limits page, the "Preview branches" usage count included development branches, not just preview branches. Because the count is rendered against the preview-branch limit, it could show nonsensical over-limit values (e.g. "12 / 5" when most were dev branches).

This is display-only — actual quota enforcement is correct. checkBranchLimit enforces two separate limits (PREVIEW -> branches, DEVELOPMENT -> branchesDev); dev branches never consumed the preview quota, only the displayed number was wrong.

Root cause

The count in LimitsPresenter.server.ts filtered only on branchName \!= null / archivedAt: null with no type filter, so it counted DEVELOPMENT branches too.

Fix

Add type: "PREVIEW" and parentEnvironmentId: { not: null } to the count's where clause, mirroring checkBranchLimit (also excludes the branchable parent env).

Closes #4281.

TRI-12199

[changeset-bot]

⚠️ No Changeset found

Latest commit: d145176

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

[coderabbitai]

Walkthrough

Updated the Limits presenter to count only PREVIEW runtime environments with a parent environment. Added a changelog entry documenting the corrected “Preview branches” usage metric.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the problem, root cause, and fix, but it omits the required template sections for checklist, testing, changelog, and screenshots.	Add the template sections: Closes #, checklist items, testing steps, changelog summary, and screenshots or a note that none are needed.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The code changes match #4281 by counting only PREVIEW environments and excluding branchable parent environments.
Out of Scope Changes check	✅ Passed	The changelog note and presenter update are directly related to the issue, with no unrelated scope added.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title clearly matches the main change: limiting the preview branch count to preview branches only.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/preview-branch-limit-count-tri-12199

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[devin-ai-integration]

✅ Devin Review: No Issues Found

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