✨ feat(ui): Replace Spin with animated Skeleton in UsageLogsActions

Summary
• Swapped out the obsolete `<Spin>` loader for a modern, animated Semi-UI `<Skeleton>` implementation in `UsageLogsActions.jsx`.

Details
1. Added animated Skeleton placeholders mirroring real Tag sizes (108 × 26, 65 × 26, 64 × 26).
2. Introduced `showSkeleton` state with 500 ms minimum display to eliminate flicker.
3. Leveraged existing `showStat` flag to decide when real data is ready.
4. Ensured only the three Tags are under loading state - `CompactModeToggle` renders immediately.
5. Adopted CardTable‐style `Skeleton` pattern (`loading` + `placeholder`) for consistency.
6. Removed all references to the original `Spin` component.

Outcome
A smoother and more consistent loading experience across devices, aligning UI behaviour with the project’s latest Skeleton standards.

web/src/components/table/usage-logs/UsageLogsActions.jsx

@@ -17,21 +17,51 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 For commercial licensing, please contact support@quantumnous.com
 */
 
-import React from 'react';
+import React, { useState, useEffect, useRef } from 'react';
-import { Tag, Space, Spin } from '@douyinfe/semi-ui';
+import { Tag, Space, Skeleton } from '@douyinfe/semi-ui';
 import { renderQuota } from '../../../helpers';
 import CompactModeToggle from '../../common/ui/CompactModeToggle';
 
 const LogsActions = ({
   stat,
   loadingStat,
+  showStat,
   compactMode,
   setCompactMode,
   t,
 }) => {
+  const [showSkeleton, setShowSkeleton] = useState(loadingStat);
+  const needSkeleton = !showStat || showSkeleton;
+  const loadingStartRef = useRef(Date.now());
+
+  useEffect(() => {
+    if (loadingStat) {
+      loadingStartRef.current = Date.now();
+      setShowSkeleton(true);
+    } else {
+      const elapsed = Date.now() - loadingStartRef.current;
+      const remaining = Math.max(0, 500 - elapsed);
+      if (remaining === 0) {
+        setShowSkeleton(false);
+      } else {
+        const timer = setTimeout(() => setShowSkeleton(false), remaining);
+        return () => clearTimeout(timer);
+      }
+    }
+  }, [loadingStat]);
+
+  // Skeleton placeholder layout (three tag-size blocks)
+  const placeholder = (
+    <Space>
+      <Skeleton.Title style={{ width: 108, height: 26, borderRadius: 6 }} />
+      <Skeleton.Title style={{ width: 65, height: 26, borderRadius: 6 }} />
+      <Skeleton.Title style={{ width: 64, height: 26, borderRadius: 6 }} />
+    </Space>
+  );
+
   return (
-    <Spin spinning={loadingStat}>
+    <div className="flex flex-col md:flex-row justify-between items-start md:items-center gap-2 w-full">
-      <div className="flex flex-col md:flex-row justify-between items-start md:items-center gap-2 w-full">
+      <Skeleton loading={needSkeleton} active placeholder={placeholder}>
         <Space>
           <Tag
             color='blue'
@@ -68,14 +98,14 @@ const LogsActions = ({
             TPM: {stat.tpm}
           </Tag>
         </Space>
+      </Skeleton>
 
-        <CompactModeToggle
+      <CompactModeToggle
-          compactMode={compactMode}
+        compactMode={compactMode}
-          setCompactMode={setCompactMode}
+        setCompactMode={setCompactMode}
-          t={t}
+        t={t}
-        />
+      />
-      </div>
+    </div>
-    </Spin>
   );
 };