feat(playground): add stdin support, localStorage persist, timeout UI… #186

	name: Health Check & Auto Deploy

	on:
	push:
	branches: [main]

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	# Backend Health Check (배포 후 확인)
	health-check:
	name: Backend Health Check
	runs-on: ubuntu-latest
	env:
	BACKEND_HEALTH_URL: https://c-osine-backend-5z56.onrender.com/health
	FRONTEND_URL: https://c-osine-frontend-5z56.onrender.com

	steps:
	- name: Wait for deployment
	run: \|
	echo "⏳ Waiting 2 minutes for Render deployment..."
	sleep 120

	- name: Check backend health
	run: \|
	echo "🏥 Checking backend health at $BACKEND_HEALTH_URL ..."
	for i in {1..30}; do
	if curl -f -s "$BACKEND_HEALTH_URL" > /dev/null 2>&1; then
	echo "✅ Backend is healthy!"
	exit 0
	fi
	echo "Attempt $i/30 failed, retrying in 10s..."
	sleep 10
	done
	echo "❌ Backend health check failed after 5 minutes"
	exit 1

	- name: Check frontend availability
	run: \|
	echo "🌐 Checking frontend at $FRONTEND_URL ..."
	curl -f -s "$FRONTEND_URL" > /dev/null
	echo "✅ Frontend is reachable"

	- name: Deployment status
	if: success()
	run: echo "🎉 Deployment successful and healthy!"

Provide feedback