fix: 软刷新齐套前保留旧画面，避免一点击就卸光

Logo/下拉静默预热后一次覆盖；commit 不再先 reset/loading；顺带会话预取与可配置 Feed 排序标签。

frontend/src/components/AsideCheckInStrip.tsx

@@ -1,6 +1,5 @@
 import { CalendarCheck, Check, Gift, Loader2 } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
-import { Skeleton } from '@/components/ui/skeleton';
 import { useCheckIn } from '../hooks/useCheckIn';
 import { useAuth } from '../hooks/useAuth';
 import { loginPath } from '../utils/authRedirect';
@@ -8,8 +7,13 @@ import { loginPath } from '../utils/authRedirect';
 /** 右侧栏首块底部：每日签到 */
 export default function AsideCheckInStrip() {
   const nav = useNavigate();
-  const { user } = useAuth();
-  const { status, loading, busy, doCheckIn } = useCheckIn();
+  const { user, loading: authLoading } = useAuth();
+  const { status, loading, busy, doCheckIn } = useCheckIn(!!user && !authLoading);
+
+  // 鉴权未完成：空白，避免「登录签到」→「今日已签到」闪一下
+  if (authLoading) {
+    return null;
+  }
 
   if (!user) {
     return (
@@ -37,17 +41,14 @@ export default function AsideCheckInStrip() {
     );
   }
 
-  if (loading && !status) {
-    return (
-      <div className="widget-checkin" aria-busy="true" aria-label="签到加载中">
-        <Skeleton className="widget-checkin-skeleton" />
-      </div>
-    );
+  // 登录用户：status 未到齐前不渲染最终态
+  if (loading || !status) {
+    return null;
   }
 
-  const checkedIn = !!status?.checked_in;
-  const streak = status?.streak ?? 0;
-  const todayPoints = status?.today_points ?? 5;
+  const checkedIn = !!status.checked_in;
+  const streak = status.streak ?? 0;
+  const todayPoints = status.today_points ?? 5;
 
   const meta = checkedIn
     ? (streak > 0 ? `连续 ${streak} 天 · 今日已获得 ${todayPoints} 积分` : `今日已获得 ${todayPoints} 积分`)