Proposal: Integrate PR Auto-Reviewer to add structure and triage visibility

**Is your feature request related to a problem? Please describe.**
I noticed that while the project has a solid validation pipeline, there isn't much automated structure for incoming Pull Requests. Without standardized commit titles or size labels, it can be easy for PRs to slip through the cracks or sit in Draft status for months.

**Describe the solution you'd like**
I built an open-source, n8n-based PR Auto-Reviewer that I believe would be a great lightweight addition to your workflow.
It automatically:

- Checks PR titles against Conventional Commits formatting to keep the history clean.

- Adds size labels (Small/Medium/Large) so you know what can be reviewed quickly.

- Pushes a structured summary to Discord, which helps maintainers keep an eye on queue activity without constantly checking GitHub.

- Workflow repo & architecture: [https://github.com/yashgoyal5571/pr-auto-reviewer](https://github.com/yashgoyal5571/pr-auto-reviewer)

- Live Demo: [https://github.com/yashgoyal5571/pr-reviewer-test/pulls](https://github.com/yashgoyal5571/pr-reviewer-test/pulls)

**Additional context**
I am happy to submit a PR with just the workflow configuration if you’d like to test this out to help organize the queue!

No repository file, test, or entry point is identified. Start by reviewing the existing validation pipeline and PR workflow, then clarify whether an n8n integration, Conventional Commits checks, size labels, and Discord summaries are wanted. Done should mean an agreed and tested workflow configuration that maintainers can adopt.

索引モデルが issue の本文から書いたものです。