Community page: track contributors, stargazers, forks, and link from README #20

Create a community page that recognizes everyone who engages with Squad — stars, forks, issues, PRs. Update it on each release.

What:

• A community guide page (e.g. \docs/community.md\ or \COMMUNITY.md) that tracks:
  • ⭐ Stargazers / likers
  • 🍴 Forks
  • 📝 Issue submitters
  • 🔀 PR contributors
• Add a link to this page from README.md (e.g. in the badges area or a new Community section)
• Update the page as part of each release cycle

Acceptance criteria:

• Community page exists with contributor recognition
• README links to the community page
• Release process includes updating the community page (can be automated or manual checklist item)
• Decide format: static markdown updated per release, or dynamic (GitHub API / shields.io badges)

Open questions:

• Should this be automated via GitHub Actions (pull contributor data on release)?
• Or a curated page updated manually each release?
• What level of detail — just names/avatars, or contributions breakdown?