feat: LiveServer-M1 v1 — educational video conferencing platform

Full MVP implementation:
- Next.js 16 + React 19 + TypeScript + Tailwind CSS v4
- LiveKit integration (rooms, tokens, webhooks, moderation)
- better-auth (email/password, sessions, roles)
- Prisma 7 + PostgreSQL (9 models, 3 enums)
- 15 API routes (auth, rooms, lobby, chat, files, moderation, hand-raise)
- 7 pages (landing, auth, dashboard, join, video room)
- SSE-based waiting room with host approval flow
- Security: PIN rate limiting, session fingerprint bans, chat/files auth
- Python AI Agent (Deepgram STT + OpenAI summarization)
- Docker Compose (local + production with Traefik + Let's Encrypt)
- Interactive setup script (setup.sh)
- Dev protection middleware (DEV_ACCESS_KEY, ALLOWED_IPS)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.env.example

@@ -0,0 +1,36 @@
+# === Domain & SSL (оставь пустым для локалки) ===
+# DOMAIN=live.example.com
+# ACME_EMAIL=admin@example.com
+
+# === Local dev protection (работает когда DOMAIN не задан) ===
+# Ключ доступа: открой http://192.168.x.x:3000?key=mySecretKey123
+DEV_ACCESS_KEY=mySecretKey123
+# Разрешённые IP (через запятую). localhost всегда разрешён.
+# ALLOWED_IPS=192.168.1.10,192.168.1.11
+
+# === Database ===
+DATABASE_URL=postgresql://postgres:postgres@localhost:5432/liveserver
+POSTGRES_PASSWORD=postgres
+
+# === LiveKit ===
+LIVEKIT_URL=wss://your-project.livekit.cloud
+NEXT_PUBLIC_LIVEKIT_URL=wss://your-project.livekit.cloud
+LIVEKIT_API_KEY=your-api-key
+LIVEKIT_API_SECRET=your-api-secret
+
+# === AI Agent (Python) ===
+DEEPGRAM_API_KEY=your-deepgram-key
+OPENAI_API_KEY=your-openai-key
+
+# === Storage (MinIO/S3) ===
+S3_ENDPOINT=http://minio:9000
+S3_ACCESS_KEY=minioadmin
+S3_SECRET_KEY=minioadmin
+S3_BUCKET=liveserver
+MINIO_ROOT_USER=minioadmin
+MINIO_ROOT_PASSWORD=minioadmin
+
+# === Auth ===
+BETTER_AUTH_SECRET=your-secret-key-change-in-production
+BETTER_AUTH_URL=http://localhost:3000
+NEXT_PUBLIC_APP_URL=http://localhost:3000