[优化] 重构数据库迁移逻辑，添加版本管理和验证功能

openflare_server/model/migrate/v12.go

@@ -0,0 +1,24 @@
+package migrate
+
+import "gorm.io/gorm"
+
+func init() {
+	Register(V12())
+}
+
+func V12() Migration {
+	return Migration{
+		FromVersion: 11,
+		ToVersion:   12,
+		Migrate:     migrateV12,
+		Validate:    validateV12,
+	}
+}
+
+func migrateV12(ctx Context, db *gorm.DB, backend string) error {
+	return ctx.ApplyCurrentSchema(db, backend)
+}
+
+func validateV12(ctx Context, db *gorm.DB, backend string) error {
+	return ctx.ValidateDatabaseSchemaVersion(db, backend, 12)
+}