Sync 3rd party skills and track new upstream skills

[fcakyon]

Three vendor skill syncs broke on upstream changes, and several vendors shipped new skills and docs the scripts never picked up.

• OpenShip v0.8.0 moved prepare.service.ts, so the sync failed. Repointed it, synced v0.8.0, and added 5 new pages (CLI automation, rollback, logs, two troubleshooting guides) linked from openship-deploy
• LiveKit split its one skill into 7. The script now syncs all of them with two small patches for self-hosted servers, replacing a 120-line patch block
• Hetzner added hcloud api, which had no category and was skipped. It now lands in references/api/
• New upstream skills: Stripe +5 (docs, Connect, Apps, Metronome), agent-browser +3 (dogfood, derive-client, webmcp-gen), Supabase +1 (supabase), Cloudflare +2 (basin, k2)
• Stripe and Supabase now loop over the upstream folder, so future skills arrive without script edits. Stripe skips stripe-pay (sends money) and stripe-directory

sync_skill() {
  sync_dir "$1" "$2" .
  ensure_license "$2" "$3"
  create_zip "$2"
}

Versions bumped for every touched plugin (minor for the 5 that gained skills). The new ZIP badges resolve after the next release.