docs: add guidance to link PRs to Linear issues in PR description

Co-authored-by: Michael Sukkarieh <msukkari@users.noreply.github.com>

Author: cursoragent

CLAUDE.md

@@ -276,6 +276,7 @@ You can optionally include a scope to indicate which package is affected:
 
 PR description:
 - If a GitHub issue number was provided, include `Fixes #<github_issue_number>` in the PR description
+- If a Linear issue ID was provided (e.g., SOU-123), include `Fixes SOU-123` at the top of the PR description to auto-link the PR to the Linear issue
 
 After the PR is created:
 - Update CHANGELOG.md with an entry under `[Unreleased]` linking to the new PR. New entries should be placed at the bottom of their section.