vrc.tl returns 403 for the VPS IP range. Route lookups through a relay
Worker (relay/), configured via vrctl.relayUrl/relaySecret in config.json.
Also handle events without eventSlots/performers instead of crashing.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MrxnVXujrZqNrENxJZfVkU
