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/composables/useRecipeFeedback.ts

@@ -1,4 +1,6 @@
+import type { CloudbaseFunctionCaller } from '~/adapters/cloudbase'
 import type { RecipeReport, SearchSignal } from '~/adapters/feedback'
+import { callCloudbaseFunction } from '~/adapters/cloudbase'
 import { createFeedbackRemote } from '~/adapters/feedback'
 import { getDeviceId, signalKey } from '~/utils/feedback'
 
@@ -9,8 +11,11 @@ const sentSignals = new Set<string>()
  * cloud function. Signals are best effort and never surface errors.
  */
 export function useRecipeFeedback() {
-  const auth = useYunlefunAuth()
-  const remote = () => createFeedbackRemote(auth.callFunction, getDeviceId())
+  const config = useRuntimeConfig()
+  const env = config.public.yunlefunCloudbaseEnv
+  const callFunction: CloudbaseFunctionCaller = (name, data) =>
+    callCloudbaseFunction(env, name, data)
+  const remote = () => createFeedbackRemote(callFunction, getDeviceId())
 
   async function report(input: RecipeReport): Promise<void> {
     await remote().report(input)