同步完整源码至远程：扁平化重构现状 + 未入库源文件

- 补入库：server/internal/db/dump.go、redis 分页/扫描预算测试、opsxdb-mcp main_test、
  packages/opsxdb-mcp package-lock、docs 审计与对比文档等 37 个新文件
- 含结构扁平化进行中的 80 处修改与 155 处旧结构删除（server/ src/ src-tauri/ 为当前有效源）
- 构建产物（bin/target/dist）与签名私钥仍按规则排除

src/ConnectionList.tsx

@@ -183,7 +183,7 @@ export function ConnectionList() {
     a.download = `opsxdb-connections-${new Date().toISOString().slice(0, 10)}.json`;
     a.click();
     URL.revokeObjectURL(a.href);
-    notify({ kind: "success", title: "已导出", message: `${st.connections.length} 条连接`, mode: "toast", durationMs: 1600 });
+    notify({ kind: "success", title: "已导出", message: `${st.connections.length} 条连接`, mode: "toast", durationMs: 1600, feedback: "visible" });
   };
 
   /** R2-F5:导入连接 —— 校验数组结构;id 冲突重新生成后追加;持久化走 store 现有 action */
@@ -214,7 +214,7 @@ export function ConnectionList() {
       if (!Array.isArray(parsed) && Array.isArray((parsed as { connGroups?: unknown }).connGroups)) {
         st.importConnGroups((parsed as { connGroups: ConnectionGroup[] }).connGroups);
       }
-      notify({ kind: "success", title: "导入完成", message: `已导入 ${n} 条连接`, mode: "toast", durationMs: 2000 });
+      notify({ kind: "success", title: "导入完成", message: `已导入 ${n} 条连接`, mode: "toast", durationMs: 2000, feedback: "visible" });
     } catch (err) {
       notifyError(err, "modal");
     }