Add PR size labeling workflow

[dheerajodha]

This PR adds an automated workflow that labels pull requests based on their size (additions + deletions). The workflow will run on PR creation and updates, ensuring only one size label is present at any time.

[coderabbitai]

📝 Walkthrough

Walkthrough

A new GitHub Actions workflow is added to automate PR size labeling. The workflow triggers on pull request open and synchronize events, grants appropriate token permissions, and runs a single job that invokes a PR size labeling action.

Changes

PR Size Labeling Automation

Layer / File(s)	Summary
PR Size Labeling Workflow .github/workflows/label-pr-size.yaml	Workflow configuration that triggers on pull_request_target events (opened and synchronize), grants pull-requests: write and issues: write permissions, and executes conforma/pr-size-label-action@v1.0.0 to automatically apply size labels to pull requests.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: adding a PR size labeling workflow, which matches the changeset content.
Description check	✅ Passed	The description is directly related to the changeset, explaining the automated workflow for labeling PRs by size and its trigger conditions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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

[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/label-pr-size.yaml:
- Around line 20-25: The workflow uses pull_request_target with broad write
permissions and an unpinned action tag: replace pull_request_target with
pull_request (or justify base-repo context if needed) to avoid exposing
GITHUB_TOKEN to forked PRs and remove or restrict write permissions
(change/remove pull-requests: write and issues: write) to least-privilege;
additionally pin the action conforma/pr-size-label-action@v1.0.0 to a specific
commit SHA (replace the tag with the commit ref) so the action is immutable.
Ensure changes reference the workflow triggers and the action usage
(pull_request_target → pull_request and conforma/pr-size-label-action@<sha>) and
run the workflow locally or in CI to validate.
- Line 32: The workflow uses the GitHub Action reference
"conforma/pr-size-label-action@v1.0.0" which is tag-pinned and can be
retargeted; update that action reference to the full commit SHA instead (for
example replace "`@v1.0.0`" with "@<full-commit-sha>") so the action is pinned
immutably; edit the line containing "conforma/pr-size-label-action@v1.0.0" in
the workflow to use the repository commit SHA of the version you intend to run.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Enterprise

Run ID: b3725efb-3868-40ad-8df1-7c91d0612543

📥 Commits

Reviewing files that changed from the base of the PR and between 0e538d0 and d4a3d57.

📒 Files selected for processing (1)

• .github/workflows/label-pr-size.yaml