feat(audit): 增加审计事件基础模块

apps/server/prisma/schema.prisma

@@ -423,6 +423,26 @@ model AiLog {
   @@map("ai_logs")
 }
 
+model AuditEvent {
+  id         String   @default(cuid())
+  actorId    String?  @map("actor_id")
+  actorName  String   @default("") @map("actor_name")
+  action     String
+  entityType String   @map("entity_type")
+  entityId   String   @map("entity_id")
+  productId  String?  @map("product_id")
+  projectId  String?  @map("project_id")
+  versionId  String?  @map("version_id")
+  scope      Json     @default("{}")
+  before     Json?
+  after      Json?
+  metadata   Json     @default("{}")
+  createdAt  DateTime @default(now()) @map("created_at")
+
+  @@id([id, createdAt])
+  @@map("audit_events")
+}
+
 model XiaobaoRiskSummary {
   versionId           String   @id @map("version_id")
   riskLevel           String   @map("risk_level")