feat: add API benchmark suite (p50/p95/p99, RPS, error rate, TTFB) #29

	name: API Benchmark Smoke Gate

	on:
	pull_request:
	paths:
	- 'apps/api/**'
	- 'benchmarks/**'
	workflow_dispatch:

	jobs:
	benchmark-smoke:
	name: Benchmark Smoke Gate
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'npm'

	- name: Install dependencies
	run: npm install

	- name: Start API server
	run: npm run dev -w apps/api &
	env:
	NODE_ENV: test
	PORT: 3000

	- name: Wait for API to be ready
	run: \|
	for i in $(seq 1 30); do
	curl -sf http://localhost:3000/health && break
	echo "Waiting for API... ($i/30)"
	sleep 2
	done

	- name: Run smoke benchmark
	run: npm run benchmark
	env:
	BENCHMARK_HOST: http://localhost:3000
	BENCHMARK_DURATION: 5
	BENCHMARK_CONNECTIONS: 2
	BENCHMARK_AUTH_TOKEN: ${{ secrets.BENCHMARK_AUTH_TOKEN }}
	BENCHMARK_ADMIN_TOKEN: ${{ secrets.BENCHMARK_ADMIN_TOKEN }}
	BENCHMARK_RESULTS_DIR: benchmarks/results

	- name: Upload benchmark results
	if: always()
	uses: actions/upload-artifact@v4
	with:
	name: benchmark-results
	path: benchmarks/results/

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