feat(admin): журнал аудита с ротацией и апгрейд таблицы пользователей

Добавлен audit log (solution-users-6) с retention N дней и hourly purge; таблица пользователей приведена к DNA solution-users-1 (Filters, avatar, sorting).

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/lib/audit.ts

@@ -0,0 +1,43 @@
+import type { FastifyInstance, FastifyRequest } from 'fastify'
+import {
+  appendAudit,
+  type AppendAuditInput,
+} from '@authportal/db'
+
+export function clientIp(request: FastifyRequest): string | null {
+  const forwarded = request.headers['x-forwarded-for']
+  if (typeof forwarded === 'string' && forwarded.trim()) {
+    return forwarded.split(',')[0]?.trim() ?? null
+  }
+  return request.ip ?? null
+}
+
+export function safeAudit(
+  app: FastifyInstance,
+  input: AppendAuditInput,
+): void {
+  try {
+    appendAudit(app.db, input)
+  } catch (err) {
+    app.log.warn({ err }, 'audit_log append failed')
+  }
+}
+
+export function actorFromRequest(request: FastifyRequest): Pick<
+  AppendAuditInput,
+  'actorUserId' | 'actorEmail' | 'actorName'
+> {
+  const u = request.authUser
+  if (!u) {
+    return {
+      actorUserId: null,
+      actorEmail: null,
+      actorName: null,
+    }
+  }
+  return {
+    actorUserId: u.id,
+    actorEmail: u.email,
+    actorName: u.name,
+  }
+}