Real-time Features Skill

Implement live, collaborative features using WebSockets, Supabase Realtime, and Server-Sent Events.

CRITICAL: Check Existing First

Before implementing ANY real-time feature, verify:

1. Check for existing real-time setup:

cat package.json | grep -i "socket\|realtime\|pusher\|ably"
rg "supabase.*channel|useSubscription|WebSocket" --type ts --type tsx

2. Check for existing patterns:

rg "on\('INSERT'\|on\('UPDATE'\|subscribe\(" --type ts
ls -la src/hooks/use*Realtime* src/lib/realtime* 2>/dev/null