feat(ee): audit logs (#1977)

feat: clickhouse driver
* sync
* updates

apps/server/src/integrations/audit/audit.service.ts

@@ -0,0 +1,63 @@
+import { Injectable } from '@nestjs/common';
+import { AuditLogPayload, ActorType } from '../../common/events/audit-events';
+
+export type AuditLogContext = {
+  workspaceId: string;
+  actorId?: string;
+  actorType?: ActorType;
+  ipAddress?: string;
+  userAgent?: string;
+};
+
+export type IAuditService = {
+  log(payload: AuditLogPayload): void | Promise<void>;
+  logWithContext(
+    payload: AuditLogPayload,
+    context: AuditLogContext,
+  ): void | Promise<void>;
+  logBatchWithContext(
+    payloads: AuditLogPayload[],
+    context: AuditLogContext,
+  ): void | Promise<void>;
+  setActorId(actorId: string): void;
+  setActorType(actorType: ActorType): void;
+  updateRetention(
+    workspaceId: string,
+    retentionDays: number,
+  ): void | Promise<void>;
+};
+
+export const AUDIT_SERVICE = Symbol('AUDIT_SERVICE');
+
+@Injectable()
+export class NoopAuditService implements IAuditService {
+  log(_payload: AuditLogPayload): void {
+    // No-op: swallow the log when EE module is not available
+  }
+
+  logWithContext(_payload: AuditLogPayload, _context: AuditLogContext): void {
+    // No-op: swallow the log when EE module is not available
+  }
+
+  logBatchWithContext(
+    _payloads: AuditLogPayload[],
+    _context: AuditLogContext,
+  ): void {
+    // No-op: swallow the log when EE module is not available
+  }
+
+  setActorId(_actorId: string): void {
+    // No-op
+  }
+
+  setActorType(_actorType: ActorType): void {
+    // No-op
+  }
+
+  updateRetention(
+    _workspaceId: string,
+    _retentionDays: number,
+  ): void {
+    // No-op
+  }
+}