• Added Included sources backed by the remotely maintained catalog manifest, so
  available catalogs can be discovered and enabled without entering their URLs
  manually.
• Included sources preserve user state and cached packages across manifest
  updates, retain the last valid manifest, and identify newly added entries.
• Catalog .pkg links now resolve redirects before native PS5 Downloads
  handoff, avoiding unresolved download-page redirects during AppInst requests.