Turns on the calendar extension (built Feb 2026, stripped in the 2026-03-02 production readiness deploy, never re-enabled): ICS feed settings, calendar workspace, subscribe button on the Viktiga datum page.
Hardening before first real use: feed serve route now requires the creator to still be a company member (offboarding stops the feed); stable pagination (due_date + id, dedupe) on feed queries; fetches inside the logged try block; invoice events limited to sent/paid/partially_paid/overdue; event UIDs rebranded to accounted.se while zero feeds exist; APP_URL fallback fails closed in production; mobile stacking for the deadlines header; settings note that Google Calendar needs default notifications on subscribed calendars; calendar workspace aligned with the design system.
Skeptic reviewed (3 refutations, all fixed) plus one compliance swarm finding (fixed). No migrations.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Mattsson
f75ea2384d