feat(k8s): 事件页补全时间/次数/来源等字段

- 后端解析 source/reportingComponent 与 object_kind/name
- 新增 EventTable 统一展示：最后/首次时间、次数、重复跨度、类型、原因、对象、来源、消息
- Deployment 事件 Tab 与事件中心共用表格组件

frontend/src/components/kubernetes/k8s-event-utils.ts

@@ -0,0 +1,77 @@
+// k8s-event-utils — K8s Event 字段归一化与展示 // Logan.Li
+import { elapsedSeconds, formatDuration, formatK8sTime } from './k8s-yaml-utils';
+
+export interface NormalizedEvent {
+  name: string;
+  namespace: string;
+  type: string;
+  reason: string;
+  message: string;
+  object: string;
+  objectKind: string;
+  objectName: string;
+  source: string;
+  count: number;
+  firstTime: string;
+  lastTime: string;
+  eventTime: string;
+}
+
+/** 后端/API 原始事件 → 统一结构 // Logan.Li */
+export function normalizeK8sEvent(raw: Record<string, any>): NormalizedEvent {
+  const objectKind = raw.object_kind || raw.objectKind || '';
+  const objectName = raw.object_name || raw.objectName || '';
+  const object = raw.object
+    || (objectKind && objectName ? `${objectKind}/${objectName}` : '')
+    || '';
+  const firstTime = raw.first_time || raw.firstTime || raw.first_timestamp || raw.firstTimestamp || '';
+  const lastTime = raw.last_time || raw.lastTime || raw.last_timestamp || raw.lastTimestamp || '';
+  const eventTime = raw.event_time || raw.eventTime || '';
+  const count = Number(raw.count) > 0 ? Number(raw.count) : 1;
+  const source = raw.source
+    || raw.source_component
+    || raw.sourceComponent
+    || (raw.source?.component
+      ? `${raw.source.component}${raw.source.host ? `@${raw.source.host}` : ''}`
+      : '')
+    || '-';
+
+  return {
+    name: raw.name || '',
+    namespace: raw.namespace || '',
+    type: raw.type || 'Normal',
+    reason: raw.reason || '-',
+    message: raw.message || '-',
+    object: object || '-',
+    objectKind,
+    objectName,
+    source: source || '-',
+    count,
+    firstTime: firstTime || eventTime,
+    lastTime: lastTime || eventTime,
+    eventTime,
+  };
+}
+
+export function formatEventRelative(ts: string): string {
+  if (!ts) return '';
+  const diff = Date.now() - new Date(ts).getTime();
+  if (diff < 0) return '';
+  const mins = Math.floor(diff / 60000);
+  if (mins < 1) return '刚刚';
+  if (mins < 60) return `${mins}分钟前`;
+  const hrs = Math.floor(mins / 60);
+  if (hrs < 24) return `${hrs}小时前`;
+  return `${Math.floor(hrs / 24)}天前`;
+}
+
+/** 重复跨度：首次 → 最后 // Logan.Li */
+export function formatEventRepeatSpan(first: string, last: string, count: number): string {
+  if (count <= 1) return '-';
+  const span = formatDuration(elapsedSeconds(first, last));
+  return span === '-' ? `×${count}` : `${span} · ×${count}`;
+}
+
+export function formatEventTimeCell(ts: string): { absolute: string; relative: string } {
+  return { absolute: formatK8sTime(ts), relative: formatEventRelative(ts) };
+}