feat: MyEasyCMS v2 — Full SaaS rebuild

Complete rebuild of 22-year-old PHP CMS as modern SaaS:

Database (15 migrations, 42+ tables):
- Foundation: account_settings, audit_log, GDPR register, cms_files
- Module Engine: modules, fields, records, permissions, relations + RPC
- Members: 45+ field member profiles, departments, roles, honors, SEPA mandates
- Courses: courses, sessions, categories, instructors, locations, attendance
- Bookings: rooms, guests, bookings with availability
- Events: events, registrations, holiday passes
- Finance: SEPA batches/items (pain.008/001 XML), invoices
- Newsletter: campaigns, templates, recipients, subscriptions
- Site Builder: site_pages (Puck JSON), site_settings, cms_posts
- Portal Auth: member_portal_invitations, user linking

Feature Packages (9):
- @kit/module-builder — dynamic low-code CRUD engine
- @kit/member-management — 31 API methods, 21 actions, 8 components
- @kit/course-management, @kit/booking-management, @kit/event-management
- @kit/finance — SEPA XML generator + IBAN validator
- @kit/newsletter — campaigns + dispatch
- @kit/document-generator — PDF/Excel/Word
- @kit/site-builder — Puck visual editor, 15 blocks, public rendering

Pages (60+):
- Dashboard with real stats from all APIs
- Full CRUD for all 8 domains with react-hook-form + Zod
- Recharts statistics
- German i18n throughout
- Member portal with auth + invitation system
- Public club websites via Puck at /club/[slug]

Infrastructure:
- Dockerfile (multi-stage, standalone output)
- docker-compose.yml (Supabase self-hosted + Next.js)
- Kong API gateway config
- .env.production.example

packages/features/member-management/src/lib/member-utils.ts

@@ -0,0 +1,69 @@
+/**
+ * Client-side utility functions for member display.
+ */
+
+export function computeAge(dateOfBirth: string | null | undefined): number | null {
+  if (!dateOfBirth) return null;
+  const birth = new Date(dateOfBirth);
+  const today = new Date();
+  let age = today.getFullYear() - birth.getFullYear();
+  const m = today.getMonth() - birth.getMonth();
+  if (m < 0 || (m === 0 && today.getDate() < birth.getDate())) age--;
+  return age;
+}
+
+export function computeMembershipYears(entryDate: string | null | undefined): number {
+  if (!entryDate) return 0;
+  const entry = new Date(entryDate);
+  const today = new Date();
+  let years = today.getFullYear() - entry.getFullYear();
+  const m = today.getMonth() - entry.getMonth();
+  if (m < 0 || (m === 0 && today.getDate() < entry.getDate())) years--;
+  return Math.max(0, years);
+}
+
+export function formatSalutation(salutation: string | null | undefined, firstName: string, lastName: string): string {
+  if (salutation) return `${salutation} ${firstName} ${lastName}`;
+  return `${firstName} ${lastName}`;
+}
+
+export function formatAddress(member: Record<string, unknown>): string {
+  const parts: string[] = [];
+  if (member.street) {
+    let line = String(member.street);
+    if (member.house_number) line += ` ${member.house_number}`;
+    parts.push(line);
+  }
+  if (member.street2) parts.push(String(member.street2));
+  if (member.postal_code || member.city) {
+    parts.push(`${member.postal_code ?? ''} ${member.city ?? ''}`.trim());
+  }
+  return parts.join(', ');
+}
+
+export function formatIban(iban: string | null | undefined): string {
+  if (!iban) return '—';
+  const cleaned = iban.replace(/\s/g, '');
+  return cleaned.replace(/(.{4})/g, '$1 ').trim();
+}
+
+export function getMemberStatusColor(status: string): 'default' | 'secondary' | 'destructive' | 'outline' {
+  switch (status) {
+    case 'active': return 'default';
+    case 'inactive': return 'secondary';
+    case 'pending': return 'outline';
+    case 'resigned':
+    case 'excluded':
+    case 'deceased': return 'destructive';
+    default: return 'secondary';
+  }
+}
+
+export const STATUS_LABELS: Record<string, string> = {
+  active: 'Aktiv',
+  inactive: 'Inaktiv',
+  pending: 'Ausstehend',
+  resigned: 'Ausgetreten',
+  excluded: 'Ausgeschlossen',
+  deceased: 'Verstorben',
+};