feat: add trusted mirror update source

Version checks and downloads previously depended on GitHub Release. About & Updates now offers GitHub or a validated mirror source, keeps the selector beneath the startup-check switch, and disables it when startup checks are off.

The website resolves platform downloads from a bounded OSS release index with a GitHub fallback. Tagged releases publish and verify immutable OSS assets through OIDC before switching the latest-version index; deployment requires the configured Alibaba Cloud environment variables and role.

Release note: “关于与更新”新增 GitHub 与镜像节点选择，启动检查、手动检查和下载页使用同一可信来源；官网下载也可按系统、架构和安装包类型直接选择。

build/create-site-release.cjs

@@ -0,0 +1,203 @@
+const {
+  mkdirSync,
+  readFileSync,
+  writeFileSync
+} = require('node:fs')
+const { dirname, resolve } = require('node:path')
+
+const supportedTargets = new Map([
+  ['windows-x64', ['nsis', 'portable']],
+  ['windows-arm64', ['nsis', 'portable']],
+  ['macos-x64', ['dmg', 'zip']],
+  ['macos-arm64', ['dmg', 'zip']],
+  ['linux-x64', ['AppImage', 'deb']],
+  ['linux-arm64', ['AppImage', 'deb']]
+])
+
+function parseArguments(argv) {
+  const options = {}
+  for (let index = 0; index < argv.length; index += 1) {
+    const argument = argv[index]
+    if (
+      argument === '--manifest' ||
+      argument === '--base-url' ||
+      argument === '--output'
+    ) {
+      const value = argv[index + 1]
+      if (!value) {
+        throw new Error(`${argument} 缺少值`)
+      }
+      options[argument.slice(2)] = value
+      index += 1
+    } else {
+      throw new Error(`未知参数：${argument}`)
+    }
+  }
+  if (!options.manifest || !options.baseUrl || !options.output) {
+    throw new Error('必须指定 --manifest、--base-url 和 --output')
+  }
+  return {
+    manifest: resolve(options.manifest),
+    baseUrl: options.baseUrl,
+    output: resolve(options.output)
+  }
+}
+
+function validateBaseUrl(value) {
+  let url
+  try {
+    url = new URL(value)
+  } catch {
+    throw new Error(`OSS 基础地址无效：${value}`)
+  }
+  if (
+    url.protocol !== 'https:' ||
+    url.username ||
+    url.password ||
+    url.search ||
+    url.hash
+  ) {
+    throw new Error('OSS 基础地址必须是无凭据、查询参数和片段的 HTTPS 地址')
+  }
+  if (!url.pathname.endsWith('/')) {
+    url.pathname += '/'
+  }
+  return url
+}
+
+function assertFile(file, targetKey) {
+  if (
+    !file ||
+    typeof file.name !== 'string' ||
+    !/^GoodBuddy-[A-Za-z0-9._-]+$/u.test(file.name) ||
+    !Number.isSafeInteger(file.size) ||
+    file.size < 1 ||
+    typeof file.sha256 !== 'string' ||
+    !/^[a-f0-9]{64}$/u.test(file.sha256)
+  ) {
+    throw new Error(`发布文件元数据无效：${targetKey}`)
+  }
+}
+
+function formatForFile(fileName, platform) {
+  if (platform === 'windows') {
+    if (/-setup\.exe$/u.test(fileName)) {
+      return 'nsis'
+    }
+    if (/-portable\.zip$/u.test(fileName)) {
+      return 'portable'
+    }
+  } else if (platform === 'macos') {
+    if (fileName.endsWith('.dmg')) {
+      return 'dmg'
+    }
+    if (fileName.endsWith('.zip')) {
+      return 'zip'
+    }
+  } else if (platform === 'linux') {
+    if (fileName.endsWith('.AppImage')) {
+      return 'AppImage'
+    }
+    if (fileName.endsWith('.deb')) {
+      return 'deb'
+    }
+  }
+  return undefined
+}
+
+function createSiteRelease(manifest, baseUrlValue) {
+  if (
+    !manifest ||
+    manifest.formatVersion !== 1 ||
+    manifest.productName !== 'GoodBuddy' ||
+    typeof manifest.version !== 'string' ||
+    !/^\d+\.\d+\.\d+(?:-[0-9A-Za-z.-]+)?$/u.test(manifest.version) ||
+    !Array.isArray(manifest.targets)
+  ) {
+    throw new Error('聚合发布 manifest 元数据无效')
+  }
+  const baseUrl = validateBaseUrl(baseUrlValue)
+  const seenTargets = new Set()
+  const targets = {}
+  for (const target of manifest.targets) {
+    const key = `${target?.platform}-${target?.arch}`
+    const expectedFormats = supportedTargets.get(key)
+    if (
+      !expectedFormats ||
+      seenTargets.has(key) ||
+      !Array.isArray(target.formats) ||
+      !Array.isArray(target.files) ||
+      target.formats.length !== expectedFormats.length ||
+      !expectedFormats.every(
+        (format, index) => target.formats[index] === format
+      ) ||
+      target.files.length !== expectedFormats.length
+    ) {
+      throw new Error(`发布目标元数据无效：${key}`)
+    }
+    const files = {}
+    for (const file of target.files) {
+      assertFile(file, key)
+      const format = formatForFile(file.name, target.platform)
+      if (!format || !expectedFormats.includes(format) || files[format]) {
+        throw new Error(`发布文件格式无效：${file.name}`)
+      }
+      files[format] = {
+        name: file.name,
+        size: file.size,
+        sha256: file.sha256,
+        url: new URL(encodeURIComponent(file.name), baseUrl).href
+      }
+    }
+    if (expectedFormats.some((format) => !files[format])) {
+      throw new Error(`发布目标文件不完整：${key}`)
+    }
+    targets[key] = {
+      platform: target.platform,
+      arch: target.arch,
+      files
+    }
+    seenTargets.add(key)
+  }
+  if (seenTargets.size !== supportedTargets.size) {
+    throw new Error(
+      `发布目标数量错误：期望 ${supportedTargets.size}，实际 ${seenTargets.size}`
+    )
+  }
+  return {
+    formatVersion: 1,
+    productName: manifest.productName,
+    version: manifest.version,
+    targets,
+    checksumUrl: new URL('SHA256SUMS', baseUrl).href,
+    fallbackUrl: 'https://github.com/mesalogo/goodbuddy/releases/latest'
+  }
+}
+
+function main(argv = process.argv.slice(2)) {
+  const options = parseArguments(argv)
+  const manifest = JSON.parse(readFileSync(options.manifest, 'utf8'))
+  const siteRelease = createSiteRelease(manifest, options.baseUrl)
+  mkdirSync(dirname(options.output), { recursive: true })
+  writeFileSync(
+    options.output,
+    `${JSON.stringify(siteRelease, null, 2)}\n`,
+    'utf8'
+  )
+  console.log(`官网发布索引已生成：${options.output}`)
+}
+
+module.exports = {
+  createSiteRelease,
+  parseArguments,
+  validateBaseUrl
+}
+
+if (require.main === module) {
+  try {
+    main()
+  } catch (error) {
+    console.error(error)
+    process.exitCode = 1
+  }
+}