Minimal API slice /api/tasks (idempotent create with client ids, versioned updates, state-based status changes, checklist, parent approval/rejection, points overview and audited adjustments, recurring next instance), per-user SignalR broadcasts that respect private tasks, /api/push subscription endpoints, a dependency-free Web Push sender (RFC 8291/8292) and a minimal reminder service. VAPID keys via Aspire parameters and deploy/.env (tools/generate-vapid-keys.cs); integration test login limit raised.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
