Full campaign editor with HTML body textarea, live iframe preview,
list selector with subscriber counts, save draft, send now, and
schedule send. Added edit/delete actions on draft campaigns and
GET/PUT/DELETE single-campaign proxy routes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add Listmonk newsletter management proxy API with role-based auth,
newsletter manager component, password setting type support, and
new backlog task files. Update newsletter subscribe URL.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett