docs: 更新 README，新增精选分类和源特点说明 #42

	name: Update Subscriptions

	on:
	push:
	branches: [dev]
	schedule:
	- cron: '17 * * * *'
	workflow_dispatch:

	jobs:
	update:
	runs-on: ubuntu-latest
	permissions:
	contents: write

	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-node@v4
	with:
	node-version: 22

	- name: Install dependencies
	run: npm ci

	- name: Fetch and merge sources
	run: npx tsx src/fetch.ts

	- name: Download mihomo kernel
	run: \|
	DOWNLOAD_URL=$(curl -s https://api.github.com/repos/MetaCubeX/mihomo/releases \| \
	node -e "
	const data = require('fs').readFileSync('/dev/stdin','utf8');
	const releases = JSON.parse(data).filter(r => !r.prerelease && !/alpha\|beta/i.test(r.tag_name));
	const asset = releases[0].assets.find(a => a.name.startsWith('mihomo-linux-amd64') && a.name.endsWith('.gz') && !a.name.includes('-go'));
	console.log(asset.browser_download_url);
	")
	curl -L "$DOWNLOAD_URL" -o mihomo.gz
	gzip -dc mihomo.gz > mihomo
	chmod +x mihomo

	- name: Protocol handshake check
	run: npx tsx src/check.ts

	- name: Generate output
	run: npx tsx src/output.ts

	- name: Deploy to main branch
	run: \|
	cd output
	git init
	git config user.name "github-actions[bot]"
	git config user.email "github-actions[bot]@users.noreply.github.com"
	git add -A
	git commit -m "$(date -u '+%Y-%m-%d %H:%M') update"
	git push --force "https://x-access-token:${{ github.token }}@github.com/${{ github.repository }}.git" HEAD:main

Provide feedback