feat(frontend/admin): M10 后台管理面板（/admin hash 路由 + 15 大模块 + RBAC(owner/admin/viewer) + 审计 + Miuix）；Docs/api-client.md v0.3 契约补全；tsc+vite build 通过

frontend/web/src/admin/audit.ts

@@ -0,0 +1,35 @@
+import { create } from "zustand";
+import type { AuditRecord } from "../lib/types";
+import { getStoredRole } from "../lib/api";
+import { now, uid } from "../lib/util";
+
+/**
+ * Client-side audit trail. Every admin write the panel performs is pushed here
+ * with who/what/when/result so the 可观测性 → 审计 tab has real content even
+ * before the backend exposes an audit endpoint. It is also the visual front of
+ * the "主代理代审 + 审计日志" red line.
+ */
+
+interface AuditStore {
+  records: AuditRecord[];
+  log: (what: string, result: "ok" | "error") => void;
+  clear: () => void;
+}
+
+export const useAuditStore = create<AuditStore>((set) => ({
+  records: [],
+  log: (what, result) =>
+    set((s) => ({
+      records: [
+        {
+          id: uid(),
+          who: getStoredRole() ?? "anonymous",
+          what,
+          when: new Date(now()).toISOString(),
+          result,
+        },
+        ...s.records,
+      ].slice(0, 200),
+    })),
+  clear: () => set({ records: [] }),
+}));