From CEO plan review:
- Edge functions: early guard on missing env vars instead of non-null assert crash
- cli-team: wire isTokenExpired check (was imported but unused)
- Migration 007: CHECK constraint on team slug (a-z0-9 hyphens, 2-50 chars)
- Dashboard: streak badges on leaderboard, repo slug in who's-online,
contextual empty states that teach, 60s refresh (was 30s)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>