Arrow User Auth Twitch API

Port 3113 — Public-facing Twitch OAuth (auth.team-arrow.gg)

Endpoints

• /health — Service health check
• /twitch/login?return=URL — Start OAuth, redirect to Twitch
• /twitch/callback — OAuth callback (called by Twitch)
• /twitch/session — Current logged-in user (JSON)
• /twitch/logout?return=URL — Clear session, redirect