fix(app): 修复应用计数统计问题

- 将应用总数统计从 apps.value.length 改为 baseApps.value.length
- 确保分类统计基于正确的基础应用数据
- 解决了应用过滤后计数不准确的问题

src/App.vue

@@ -613,7 +613,7 @@ const categoryCounts = computed(() => {
     return { ...tabCounts, all: allCounts.all };
   }
 
-  const counts: Record<string, number> = { all: apps.value.length };
+  const counts: Record<string, number> = { all: baseApps.value.length };
   sourceApps.forEach((app) => {
     if (!counts[app.category]) counts[app.category] = 0;
     counts[app.category]++;