精简后的项目：仅保留 api/ui 源码、文档、构建依赖

api/graphql/models/base.go

@@ -0,0 +1,15 @@
+package models
+
+import (
+	"time"
+)
+
+type Model struct {
+	ID int `gorm:"primarykey"`
+	ModelTimestamps
+}
+
+type ModelTimestamps struct {
+	CreatedAt time.Time
+	UpdatedAt time.Time
+}