feat: 移动端底部导航可配置与工作区导航、置顶后台等前端调整

frontend/components/SnippetExplorer.tsx

@@ -11,7 +11,6 @@ import {
   GitFork,
   Plus,
   Lock,
-  Loader2,
   ArrowLeft,
   ArrowRight,
   RotateCcw,
@@ -454,24 +453,19 @@ export default function SnippetExplorer({
         )}
       </div>
 
-      {/* 结果统计 */}
+      {/* 结果统计：纯文本行，切换范围时数据原地更新，无任何加载指示 */}
       <div className="mt-3 flex items-center gap-2 text-[12px]" style={{ color: "var(--ink-3)" }}>
-        {loading ? (
-          <Loader2 size={12} className="animate-spin" />
-        ) : (
-          <span className="tabular-nums" style={{ fontFamily: MONO }}>
-            <span style={{ color: "var(--accent)" }}>$</span>{" "}
-            {scope === "mine" ? "ls ~/snippets --count" : "ls --count"}
-          </span>
-        )}
+        <span className="tabular-nums" style={{ fontFamily: MONO }}>
+          <span style={{ color: "var(--accent)" }}>$</span>{" "}
+          {scope === "mine" ? "ls ~/snippets --count" : "ls --count"}
+        </span>
         <span>
           共 <b className="tabular-nums" style={{ color: "var(--ink-2)" }}>{total}</b> 个片段
-          {loading ? "，加载中…" : ""}
         </span>
       </div>
 
-      {/* 列表 / 空态 */}
-      {items.length === 0 && loading ? null : items.length === 0 && !loading ? (
+      {/* 列表 / 空态：请求期间保留现有内容，新数据返回后原地替换，不闪空态 */}
+      {items.length === 0 ? (
         filtering ? (
           <div
             className="mt-4 rounded-xl px-6 py-12 text-center"