Initial commit: ANOUMA website with Payload CMS, WebRTC meetings, and booking system

- Next.js 16 App Router site with the ANOUMA design system
- Payload CMS (PostgreSQL) for offers, events, posts and page content
- WebRTC video-call system with custom signaling server
- SMTP email reminders and booking-request notifications
- Customer accounts, calendar-based availability, and booking workflow

collections/Customers.ts

@@ -0,0 +1,53 @@
+import type { CollectionConfig } from "payload";
+
+const isSelfOrAdmin = ({ req }: { req: { user?: { collection?: string; id?: unknown } | null } }) => {
+  const user = req.user;
+  if (!user) return false;
+  if (user.collection === "users") return true;
+  if (user.collection === "customers") return { id: { equals: user.id } };
+  return false;
+};
+
+export const Customers: CollectionConfig = {
+  slug: "customers",
+  labels: {
+    singular: "Kundin/Kunde",
+    plural: "Kund:innen",
+  },
+  admin: {
+    useAsTitle: "name",
+    defaultColumns: ["name", "email", "phone"],
+    group: "Buchungen",
+    description: "Konten der Website-Besucher:innen (nicht die Admin-Zugänge unter „Benutzer:innen“).",
+  },
+  auth: {
+    maxLoginAttempts: 8,
+    lockTime: 10 * 60 * 1000,
+  },
+  access: {
+    // Anyone can create their own account (registration); reading/updating
+    // is restricted to the account owner or an admin.
+    create: () => true,
+    read: isSelfOrAdmin,
+    update: isSelfOrAdmin,
+    delete: ({ req }) => req.user?.collection === "users",
+  },
+  fields: [
+    {
+      name: "name",
+      type: "text",
+      label: "Name",
+      required: true,
+    },
+    {
+      name: "phone",
+      type: "text",
+      label: "Telefonnummer",
+      required: false,
+      admin: {
+        description: "Optional — für eine spätere Nutzung vorbereitet, aktuell nicht verpflichtend.",
+      },
+    },
+    // "email" and "password" are added automatically by the auth config.
+  ],
+};