feat(opsserver): add health, audit, cluster health, and durable credential management hardening

ts/opsserver/handlers/audit.handler.ts

@@ -0,0 +1,28 @@
+import * as plugins from '../../plugins.ts';
+import type { OpsServer } from '../classes.opsserver.ts';
+import * as interfaces from '../../../ts_interfaces/index.ts';
+import { requireAdminIdentity } from '../helpers/guards.ts';
+
+export class AuditHandler {
+  public typedrouter = new plugins.typedrequest.TypedRouter();
+
+  constructor(private opsServerRef: OpsServer) {
+    this.opsServerRef.typedrouter.addTypedRouter(this.typedrouter);
+    this.registerHandlers();
+  }
+
+  private registerHandlers(): void {
+    this.typedrouter.addTypedHandler(
+      new plugins.typedrequest.TypedHandler<interfaces.requests.IReq_ListAuditEntries>(
+        'listAuditEntries',
+        async (dataArg) => {
+          await requireAdminIdentity(this.opsServerRef.adminHandler, dataArg);
+          const entries = await this.opsServerRef.objectStorageRef.auditLogger.listRecent(
+            dataArg.limit ?? 100,
+          );
+          return { entries };
+        },
+      ),
+    );
+  }
+}