Feat: Improve PR Reviewer Rules

[daniel-lxs]

This PR enhances the PR Reviewer mode by adding two new important checks to the review process:

1. Check for Associated Issue: The workflow now includes a step to look for a linked GitHub issue in the PR body. If an issue is found, it will be fetched to provide more context for the review.
2. Verify Scope of Changes: The reviewer will now verify that the changes in the PR are directly related to the linked issue and do not include any unrelated modifications.

These changes have been implemented across the following files:

• .roo/rules-pr-reviewer/1_workflow.xml
• .roo/rules-pr-reviewer/2_best_practices.xml
• .roo/rules-pr-reviewer/3_common_mistakes_to_avoid.xml

This will help ensure that PRs are more focused and that reviewers have all the necessary context to perform a thorough review.

---

Important

Enhances PR Reviewer mode by adding checks for associated issues and verifying change scope in 1_workflow.xml, with updates to best practices and common mistakes.

• Behavior:
  • Adds check for associated GitHub issue in PR body in 1_workflow.xml.
  • Verifies changes are related to the linked issue in 1_workflow.xml.
• Best Practices:
  • Updates 2_best_practices.xml to include checking for associated issues and ensuring changes relate to the issue.
• Common Mistakes:
  • Updates 3_common_mistakes_to_avoid.xml to avoid overlooking unrelated changes and forgetting to check for associated issues.

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