feat(P19ERP2-1,P19ERP2-2): 实现采购ERP凭证与摘要出站服务

server/prisma/migrations/20260308153000_p19erp2_binding_entity_type_width/migration.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "integration_bindings"
+  ALTER COLUMN "entity_type" TYPE VARCHAR(64);

server/prisma/schema.prisma

@@ -1208,7 +1208,7 @@ model IntegrationOutbox {
 model IntegrationBinding {
   id            String    @id @default(uuid()) @db.Uuid
   provider      String    @db.VarChar(32)
-  entity_type   String    @db.VarChar(32)
+  entity_type   String    @db.VarChar(64)
   local_id      String    @db.Uuid
   external_id   String?   @db.VarChar(128)
   external_code String?   @db.VarChar(128)