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

lib/meeting/protocol.ts

@@ -0,0 +1,22 @@
+import type { MeetingRole } from "./token";
+
+export type ParticipantSummary = {
+  participantId: string;
+  name: string;
+  role: MeetingRole;
+};
+
+export type ClientToServerMessage =
+  | { type: "offer"; to: string; payload: RTCSessionDescriptionInit }
+  | { type: "answer"; to: string; payload: RTCSessionDescriptionInit }
+  | { type: "ice-candidate"; to: string; payload: RTCIceCandidateInit }
+  | { type: "kick"; targetParticipantId: string };
+
+export type ServerToClientMessage =
+  | { type: "welcome"; participantId: string; role: MeetingRole; participants: ParticipantSummary[] }
+  | ({ type: "peer-joined" } & ParticipantSummary)
+  | { type: "peer-left"; participantId: string }
+  | { type: "offer"; from: string; payload: RTCSessionDescriptionInit }
+  | { type: "answer"; from: string; payload: RTCSessionDescriptionInit }
+  | { type: "ice-candidate"; from: string; payload: RTCIceCandidateInit }
+  | { type: "kicked" };