- gstack-community-backup: syncs config/analytics/retro to Supabase
using auth JWT, rate-limited to 30min intervals
- gstack-community-restore: pulls backup from Supabase, merges with
local state (local wins on conflicts), supports --dry-run
- gstack-community-benchmarks: compares your per-skill duration avg
against community median with delta percentages
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>