refactor: 个人自用，移除登录与云同步全链路

站点只给本人用，云乐坊 SSO 授权、收藏/历史云同步、获客归因和账号切换记账都没有收益，却被登录状态检查和同步失败提示持续打扰。

- 删除 useYunlefunAuth / yunlefunAuth / yunlefunSsoConfig / yunlefunAuth 适配器、useUserDataSync / userDataSync / userData 适配器、三个 client 插件与 /auth/callback 回调页
- 抽出 adapters/cloudbase.ts，让「反馈一下」和匿名筛选信号不再依赖登录态；cook-feedback 云函数保留
- 删除 cook-user-data 云函数与 cook_user_data 权限规则，移除 @yunlefun/sso 依赖
- 「我的」页删掉登录按钮、账号卡、四个统计格和退出登录；「关于」页删掉项目作者、致谢名单和上游宣传链接
- 本地收藏/历史与导出导入保留，删除同步专用的 lastUid 记账

取舍见 docs/decisions/0005-drop-login-and-sync.md

scripts/cloudbase-rules/cook_user_data.json

@@ -1,6 +0,0 @@
-{
-  "action": "updateResourcePermission",
-  "resourceType": "noSqlDatabase",
-  "resourceId": "cook_user_data",
-  "permission": "ADMINONLY"
-}

scripts/qa/verify-acquisition-sdk.mjs

@@ -1,50 +0,0 @@
-import assert from 'node:assert/strict'
-import { execFileSync } from 'node:child_process'
-import { lstatSync, mkdtempSync, readdirSync, renameSync, rmSync, symlinkSync } from 'node:fs'
-import { tmpdir } from 'node:os'
-import { join, resolve } from 'node:path'
-import process from 'node:process'
-import { fileURLToPath } from 'node:url'
-
-const argument = process.argv.find(value => value.startsWith('--sdk-root='))
-assert(argument, 'Pass --sdk-root=/path/to/ylf (a local checkout containing packages/sso)')
-const sdkRoot = resolve(argument.slice('--sdk-root='.length))
-const cookRoot = fileURLToPath(new URL('../../', import.meta.url))
-const dependency = join(cookRoot, 'node_modules/@yunlefun/sso')
-assert(lstatSync(dependency).isSymbolicLink(), 'Expected the existing pnpm SSO dependency symlink')
-const temporary = mkdtempSync(join(tmpdir(), 'cook-acquisition-sdk-'))
-const previous = join(temporary, 'previous-sso-link')
-let replaced = false
-const run = (args, cwd) => execFileSync('pnpm', args, { cwd, stdio: 'inherit' })
-// Invoke installed tools directly: newer pnpm can auto-install on `exec` when the release lock is pending.
-function runCookTool(tool, args) {
-  return execFileSync(join(cookRoot, 'node_modules/.bin', tool), args, {
-    cwd: cookRoot,
-    stdio: 'inherit',
-  })
-}
-
-try {
-  run(['--filter', '@yunlefun/sso', 'build'], sdkRoot)
-  run(['pack', '--pack-destination', temporary], join(sdkRoot, 'packages/sso'))
-  const archive = readdirSync(temporary).find(value => value.endsWith('.tgz'))
-  assert(archive, 'SDK pack must produce a tarball')
-  execFileSync('tar', ['-xzf', join(temporary, archive), '-C', temporary])
-  symlinkSync(join(sdkRoot, 'packages/sso/node_modules'), join(temporary, 'package/node_modules'), 'dir')
-  renameSync(dependency, previous)
-  replaced = true
-  symlinkSync(join(temporary, 'package'), dependency, 'dir')
-  runCookTool('vitest', ['run', 'test/acquisition.test.ts', 'test/yunlefunAuthAdapter.test.ts', 'test/yunlefunAuth.test.ts', 'test/yunlefunSsoConfig.test.ts'])
-  runCookTool('eslint', ['apps/web/app/utils/acquisition.ts', 'apps/web/app/plugins/acquisition.client.ts', 'apps/web/app/plugins/yunlefun-auth.client.ts', 'apps/web/app/adapters/yunlefunAuth.ts', 'test/acquisition.test.ts', 'test/yunlefunAuthAdapter.test.ts', 'test/yunlefunAuth.test.ts', 'scripts/qa/verify-acquisition-sdk.mjs'])
-  if (process.argv.includes('--build'))
-    runCookTool('nuxt', ['build'])
-  if (process.argv.includes('--typecheck'))
-    runCookTool('nuxt', ['typecheck'])
-}
-finally {
-  if (replaced) {
-    rmSync(dependency, { force: true })
-    renameSync(previous, dependency)
-  }
-  rmSync(temporary, { recursive: true, force: true })
-}