feat(skills): 优化技能安装/卸载的缓存更新策略 (#1573)

- 修改安装、卸载、导入、ZIP安装等操作的缓存更新逻辑，从invalidateQueries改为直接setQueryData
- 为已安装和可发现技能查询添加keepPreviousData和staleTime: Infinity配置
- 修复会话管理页面布局滚动问题，添加min-h-0防止内容溢出

src/components/skills/UnifiedSkillsPanel.tsx

@@ -110,7 +110,16 @@ const UnifiedSkillsPanel = React.forwardRef<
       message: t("skills.uninstallConfirm", { name: skill.name }),
       onConfirm: async () => {
         try {
-          const result = await uninstallMutation.mutateAsync(skill.id);
+          // 构建 skillKey 用于更新 discoverable 缓存
+          const installName =
+            skill.directory.split(/[/\\]/).pop()?.toLowerCase() ||
+            skill.directory.toLowerCase();
+          const skillKey = `${installName}:${skill.repoOwner?.toLowerCase() || ""}:${skill.repoName?.toLowerCase() || ""}`;
+
+          const result = await uninstallMutation.mutateAsync({
+            id: skill.id,
+            skillKey,
+          });
           setConfirmDialog(null);
           toast.success(t("skills.uninstallSuccess", { name: skill.name }), {
             description: result.backupPath