P3: Community growth — Discussions, contributor engagement, monthly updates

[thebrianlopez]

Phase 3: Community Growth (Month 2-3)

Parent: #1

• Enable GitHub Discussions on the repo
• Respond to all issues and PRs within 48 hours
• Add 5-10 new entries per month
• Cross-link from farewelljohn.com blog content
• Track star count and traffic weekly via GitHub Insights
• Engage with contributors — thank PRs, answer questions