Switch to Seerr image, add media stack README

servers/legion/k8s/media/overseerr.yaml

@@ -1,11 +1,6 @@
 # Overseerr — family request portal (watch.nook.family)
+# NOTE: Overseerr is being superseded by Seerr — migrate when ready
 # Family members browse and request content here
-# After deploy, complete setup wizard at watch.nook.family:
-#   1. Sign in with Plex account
-#   2. Connect to Plex server
-#   3. Add Radarr (http://radarr:7878) and Sonarr (http://sonarr:8989)
-#   4. Create managed user accounts for each family member
-#   5. Set request permissions per user (kids require approval)
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -27,7 +22,7 @@ spec:
     spec:
       containers:
         - name: overseerr
-          image: sctx/overseerr:latest
+          image: seerr/seerr:latest
           env:
             - name: TZ
               value: "America/Chicago"