# Palace Family — Web App Spec

## Overview

Web app for Palace Family. Voice calls via WebRTC. Zero cost.

## Stack

- Astro (part of palacering, pages at `palacering/src/pages/family/`)
- WebRTC for voice calls (peer-to-peer)
- Signaling server: WebSocket (to be hosted on palacelab-vm)
- coturn on palacelab-vm for STUN/TURN

## Features

- Group chat (existing, ported to Astro)
- Voice calls (1:1 and group, audio only, mesh topology)

## Architecture

- Mesh P2P — each peer connects directly to every other peer
- Fine for family-sized groups (<6 people)
- Signaling: WebSocket server handles offer/answer/ICE exchange
- coturn (Docker on palacelab-vm) for NAT traversal — free, self-hosted
- No SFU, no paid services