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

apps/web/app/components/TheAboutList.vue

@@ -1,69 +0,0 @@
-<script lang="ts" setup>
-import { isClient } from '@vueuse/core'
-import pkg from '~/../package.json'
-import { icp } from '../constants'
-
-const displayICP = ref(true)
-
-const commitSha = (import.meta.env.VITE_COMMIT_REF || '').slice(0, 7)
-const date = import.meta.env.VITE_APP_BUILD_DATE
-const buildDate = (new Date(date)).toLocaleDateString()
-
-onBeforeMount(() => {
-  if (isClient)
-    displayICP.value = ['cook.yunyoujun.cn', 'localhost', '127.0.0.1'].includes(window.location.hostname)
-})
-</script>
-
-<template>
-  <ion-list :inset="true">
-    <ion-item>
-      <ion-label>当前版本</ion-label>
-      <ion-text>v{{ pkg.version }}</ion-text>
-    </ion-item>
-
-    <ion-item>
-      <ion-label>构建时间</ion-label>
-      <ion-text>{{ buildDate }}</ion-text>
-    </ion-item>
-
-    <ion-item v-if="commitSha" :href="`https://github.com/YunYouJun/cook/commit/${commitSha}`" target="_blank">
-      <ion-label>Commit Hash</ion-label>
-      <ion-text>{{ commitSha }}</ion-text>
-    </ion-item>
-
-    <ion-item v-if="displayICP" href="https://beian.miit.gov.cn/" target="_blank">
-      <ion-label>备案号</ion-label>
-      <ion-text>{{ icp }}</ion-text>
-    </ion-item>
-  </ion-list>
-
-  <ion-list :inset="true">
-    <ion-item href="https://www.bilibili.com/blackboard/dynamic/306882" target="_blank">
-      <ion-label>数据来源</ion-label>
-      <ion-text class="inline-flex items-center justify-center">
-        <div class="inline-flex" i-ri-bilibili-line />
-        <span m="l-1" class="inline-flex">哔哩哔哩</span>
-      </ion-text>
-    </ion-item>
-
-    <ion-item href="https://github.com/YunYouJun/cook" target="_blank">
-      <ion-label>开源代码</ion-label>
-      <ion-text class="inline-flex items-center justify-center">
-        <div class="inline-flex" i-ri-github-line />
-        <span m="l-1" class="inline-flex">GitHub</span>
-      </ion-text>
-    </ion-item>
-
-    <ion-item router-link="/about/me">
-      <ion-label>项目作者</ion-label>
-      <ion-text class="inline-flex items-center justify-center">
-        云游君
-      </ion-text>
-    </ion-item>
-
-    <ion-item router-link="/about/acknowledgements">
-      <ion-label>致谢名单</ion-label>
-    </ion-item>
-  </ion-list>
-</template>