feat: require couple binding and refine miniapp settings

Gate record features and storage entry points with invitation guidance; enforce record access in the backend. Add homepage greetings, right-swipe profile dismissal, and move the smoking switch to settings. Simplify API base configuration and remove the unused legacy tab bar component.

weapp/custom-tab-bar/index.js

@@ -1,3 +1,4 @@
+const { requireRecordAccess } = require('../utils/record-access');
 const { tryLoginRenewal } = require('../utils/subscribe');
 const { tabForPage, paths } = require('../utils/navigation');
 Component({
@@ -15,6 +16,7 @@ Component({
     tryLoginRenewal();
     var tab = e.currentTarget.dataset.tab;
     if (!paths[tab]) return;
+    if (tab === 'records' && !requireRecordAccess()) return;
     var pages = getCurrentPages();
     // 当前主页面重复点击不重新加载。
     if (pages.length && pages[pages.length - 1].route === paths[tab]) return;