优化: 会话生命周期统一、并发保护、错误节流与测试补充 #19

	name: CI

	on:
	push:
	branches:
	- main
	- master
	pull_request:

	jobs:
	frontend:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Node
	uses: actions/setup-node@v4
	with:
	node-version: "18"
	cache: npm

	- name: Install dependencies
	run: npm ci

	- name: Lint
	run: npm run lint

	- name: Test
	run: npm run test:run

	- name: Build
	run: npm run build

	backend:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.11"
	cache: pip
	cache-dependency-path: server/requirements.txt

	- name: Install backend dependencies
	run: python -m pip install -r server/requirements.txt

	- name: Compile backend
	run: python -m compileall server/app

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