WIP: State save - pre-deploy Wiki.js manual steps documented

SESSION-HANDOFF-NEXT.md

@@ -148,3 +148,26 @@ You're inheriting a live community. Real subscribers are coming. The infrastruct
 Take good care of them. 🔥❄️
 
 — The Ignition, Chronicler #91
+
+---
+
+## ⚠️ PRE-DEPLOY MANUAL STEP — Subscriber Wiki Auth (Task #138)
+
+**BEFORE Code deploys REQ-2026-04-15-subscriber-wiki-auth:**
+
+Michael must do these steps in the Wiki.js admin panel at `subscribers.firefrostgaming.com`:
+
+1. **Create 6 user groups** (in this order):
+   - Awakened
+   - Elemental
+   - Knight
+   - Master
+   - Legend
+   - Sovereign
+
+2. **Note the group IDs** — Wiki.js assigns numeric IDs. Pass these to Code so the tier→group mapping is correct.
+
+3. **Generate an API key** — Wiki.js Admin → API Access → Generate key. Add to Arbiter `.env` as `WIKIJS_API_KEY`.
+
+**Do NOT deploy until these three steps are complete.** Code needs the group IDs to finish the implementation.
+