feat(glyph): add Open WebUI state to restic backup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: stackptr

hosts/glyph/services/default.nix

@@ -78,6 +78,7 @@
     enable = true;
     paths = [
       "/var/lib/basic-memory"
+      "/var/lib/open-webui"
       "/var/lib/roon-server/backup"
     ];
   };