Add control room help article and move ops docs

docs/help/en/admin/event-prep-checklist.md

@@ -12,6 +12,7 @@ last_reviewed_at: 2026-01-23
 owner: ops@fotospiel.app
 related:
   - slug: tenant-dashboard-overview
+  - slug: control-room-moderation
   - slug: live-show-setup
 ---
 
@@ -29,7 +30,7 @@ related:
 
 ## Final 2 hours
 - [ ] **Share the QR** at entrances and photobooth areas.
-- [ ] **Open the moderation view** on a staff device if you expect high upload volume.
+- [ ] **Open the Control Room** on a staff device if you expect high upload volume.
 - [ ] **Brief staff** on what to do for flagged content or support requests.
 
 ### Tips
@@ -37,4 +38,4 @@ related:
 - Use a test guest to verify the full flow end-to-end.
 
 ### Need more help?
-Open `live-show-setup` for display setup or revisit `tenant-dashboard-overview` for status checks.
+Open `control-room-moderation` for queue handling or revisit `tenant-dashboard-overview` for status checks.