Initial commit: Port Nimara CRM (Layers 0-4)

Full CRM rebuild with Next.js 15, TypeScript, Tailwind, Drizzle ORM,
PostgreSQL, Redis, BullMQ, MinIO, and Socket.io. Includes 461 source
files covering clients, berths, interests/pipeline, documents/EOI,
expenses/invoices, email, notifications, dashboard, admin, and
client portal. CI/CD via Gitea Actions with Docker builds.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/(dashboard)/[portSlug]/admin/custom-fields/page.tsx

@@ -0,0 +1,5 @@
+import { CustomFieldsManager } from '@/components/admin/custom-fields/custom-fields-manager';
+
+export default function CustomFieldsPage() {
+  return <CustomFieldsManager />;
+}