fix(ente): rewrite ente-setup to auto-extract OTT from logs

- Remove broken hardcoded-ott config (local-domain-suffix '@' never matches)
- ente-setup now guides through 4 steps: register, extract OTT from journalctl, admin whitelist, CLI+subscription
- Fallback: shows recent codes if auto-detect fails
- Update JSON notes to reference ente-setup instead of code 123456

json/ente.json

@@ -33,7 +33,7 @@
     },
     "notes": [
         {
-            "text": "First-Start: Create your account via the web UI (port 3000), use verification code `123456`, then run `ente-setup`",
+            "text": "First-Start: Run `ente-setup` — it guides you through account creation, verification, and admin configuration",
             "type": "warning"
         },
         {