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

.env.example

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+# PostgreSQL connection string used by Payload (see docker-compose.yml for a
+# local database, or use a hosted Postgres such as Neon/Supabase).
+DATABASE_URI=postgresql://postgres:postgres@127.0.0.1:5432/anouma
+
+# Long random string used to sign Payload's auth tokens/cookies.
+# Generate one with: openssl rand -base64 48
+PAYLOAD_SECRET=replace-with-a-long-random-secret
+
+# Public URL of this site — used by Payload for absolute admin/media links,
+# and to build the meeting join link inside reminder emails.
+# Set this to the real domain in production (e.g. https://anouma.org).
+NEXT_PUBLIC_SERVER_URL=http://localhost:3000
+
+# Long random string used to sign meeting join tokens (separate from
+# PAYLOAD_SECRET on purpose). Generate one with: openssl rand -base64 48
+MEETING_SESSION_SECRET=replace-with-a-long-random-secret
+
+# Secret the external cron job must send as "Authorization: Bearer <value>"
+# to trigger /api/cron/event-reminders. Generate with: openssl rand -hex 32
+CRON_SECRET=replace-with-a-long-random-secret
+
+# SMTP settings for the existing ANOUMA mail system (reminder emails).
+# No external newsletter service — plain SMTP via nodemailer.
+SMTP_HOST=
+SMTP_PORT=587
+SMTP_USER=
+SMTP_PASSWORD=
+SMTP_FROM="ANOUMA <support@anouma.org>"