fix(nacos): format history timestamps

apps/desktop/src/lib/__tests__/nacos/nacosAdmin.spec.ts

@@ -13,6 +13,7 @@ import {
   createNacosConfigDeleteSnapshot,
   createNacosConfigSaveSnapshot,
   createNacosLatestRequestGuard,
+  formatNacosHistoryTime,
   isNacosRawMutation,
   isNacosErrorCode,
   isNacosConfigSaveSnapshotCurrent,
@@ -98,6 +99,23 @@ describe("nacosAdmin helpers", () => {
     expect(isNacosErrorCode(new Error("stalePreview"), "stalePreview")).toBe(false);
   });
 
+  it("formats Nacos history timestamps for display", () => {
+    const epochDate = new Date(1_710_000_000_000);
+    const epochDatePart = [epochDate.getFullYear(), epochDate.getMonth() + 1, epochDate.getDate()].map((part) => String(part).padStart(2, "0")).join("-");
+    const epochTimePart = [epochDate.getHours(), epochDate.getMinutes(), epochDate.getSeconds()].map((part) => String(part).padStart(2, "0")).join(":");
+    const epochDisplay = `${epochDatePart} ${epochTimePart}`;
+
+    expect(formatNacosHistoryTime("2026-07-27T18:16:36.000+08:00")).toBe("2026-07-27 18:16:36");
+    expect(formatNacosHistoryTime("2026-07-27T18:16:36Z")).toBe("2026-07-27 18:16:36");
+    expect(formatNacosHistoryTime("2026-07-27 18:16:36")).toBe("2026-07-27 18:16:36");
+    expect(formatNacosHistoryTime("1710000000000")).toBe(epochDisplay);
+    expect(formatNacosHistoryTime("1710000000")).toBe(epochDisplay);
+    expect(formatNacosHistoryTime("0")).toBe("-");
+    expect(formatNacosHistoryTime("")).toBe("-");
+    expect(formatNacosHistoryTime(null)).toBe("-");
+    expect(formatNacosHistoryTime("not-a-time")).toBe("not-a-time");
+  });
+
   it("redirects r-nacos console settings to the compatible OpenAPI endpoint", () => {
     expect(resolveRNacosOpenApiFallback("http://rnacos.example:10848", "/rnacos")).toEqual({
       serverAddr: "http://rnacos.example:8848",

apps/desktop/src/lib/nacos/nacosAdmin.ts

@@ -672,6 +672,24 @@ export function buildNacosConfigDeleteConfirm(item: NacosConfigItem, fallbackNam
   return formatNacosConfigIdentity(item, fallbackNamespace);
 }
 
+export function formatNacosHistoryTime(value?: string | null): string {
+  const trimmed = value?.trim();
+  if (!trimmed) return "-";
+  if (/^0+$/.test(trimmed)) return "-";
+  if (/^\d{10}(?:\d{3})?$/.test(trimmed)) {
+    const timestamp = Number(trimmed);
+    const date = new Date(trimmed.length === 10 ? timestamp * 1_000 : timestamp);
+    if (!Number.isNaN(date.getTime())) {
+      const datePart = [date.getFullYear(), date.getMonth() + 1, date.getDate()].map((part) => String(part).padStart(2, "0")).join("-");
+      const timePart = [date.getHours(), date.getMinutes(), date.getSeconds()].map((part) => String(part).padStart(2, "0")).join(":");
+      return `${datePart} ${timePart}`;
+    }
+  }
+  const match = trimmed.match(/^(\d{4}-\d{2}-\d{2})[T ](\d{2}:\d{2}:\d{2})(?:\.\d+)?(?:Z|[+-]\d{2}:?\d{2})?$/);
+  if (!match) return trimmed;
+  return `${match[1]} ${match[2]}`;
+}
+
 export function buildNacosConfigHistoryRollbackConfirm(item: NacosConfigHistoryItem, fallbackNamespace = ""): string {
   return [`namespace=${item.namespace || fallbackNamespace || "public"}`, `dataId=${item.dataId}`, `group=${item.group || "DEFAULT_GROUP"}`, item.lastModifiedTime ? `historyTime=${item.lastModifiedTime}` : "", item.operator ? `operator=${item.operator}` : ""].filter(Boolean).join("\n");
 }