Task #138: Wiki.js subscriber tier sync via GraphQL (REQ-2026-04-15-subscriber-wiki-auth)
- src/services/wikijsSync.js: GraphQL client for Wiki.js at subscribers.firefrostgaming.com
- syncWikiUser(discordId, username, tierLevel): creates user if not exists, updates group if exists
- demoteToAwakened(discordId): downgrades group on cancellation/chargeback/refund
- Email convention: {discordId}@firefrost.local (unique internal addresses)
- Tier → group mapping: 1=Awakened, 2=Elemental, 3=Knight, 4=Master, 5=Legend, 6=Sovereign
- Silent-fail: never breaks the Stripe webhook
- src/routes/stripe.js: hooked into 4 lifecycle paths:
- checkout.session.completed → syncWikiUser (non-blocking)
- customer.subscription.deleted → demoteToAwakened
- charge.dispute.created (chargeback) → demoteToAwakened
- charge.refunded (refund ban) → demoteToAwakened
- .env.example: added WIKIJS_URL, WIKIJS_API_KEY, DISCORD_ISSUE_WEBHOOK_URL
PRE-REQ: Michael must create 6 groups in Wiki.js admin + generate API key before deploy.
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