A community based topic aggregation platform built on atproto

Merge branch 'feat/migrate-comment-namespace' master

Complete migration of comment namespace from social.coves.feed.comment to social.coves.community.comment. This migration aligns the comment system with the community-focused architecture and ensures all comment records use the correct namespace. Summary: - ✅ Lexicon migrated to community/comment.json - ✅ Database migration 018 applied successfully - ✅ All backend code updated (consumer, service, validation) - ✅ Server configuration updated for Jetstream - ✅ All 22 integration tests passing - ✅ Test scripts and data updated - ✅ Documentation updated Migration verified with: - Unit tests: ✅ PASSING - Integration tests: ✅ 22/22 PASSING - Build: ✅ SUCCESS - Database: ✅ Migration 018 applied 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>