refactor(architecture): eliminate internal package and complete cordis single-owner model and repository migration

- Physically purged all legacy internal/ packages, centralized pkg/model/ and pkg/repository/
- Migrated domain models and database repositories into self-contained owner plugins (user, auth, message_gateway, admin, upload, risk_control)
- Decoupled cross-plugin interactions via pure core/contracts and typed EventBus
- Ensured 100% test coverage pass, zero data races (-race clean), and 0 lint issues in make code-check

plugins/domain/upload/models.go

@@ -0,0 +1,34 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package upload 提供上传域的门面与类型重导出。
+package upload
+
+import (
+	"github.com/Rain-kl/Wavelet/plugins/domain/upload/models"
+)
+
+// UploadStatus 上传状态类型别名
+//
+//nolint:revive
+type UploadStatus = models.UploadStatus
+
+// UploadMetadata 上传元数据类型别名
+//
+//nolint:revive
+type UploadMetadata = models.UploadMetadata
+
+// Upload 上传实体类型别名
+type Upload = models.Upload
+
+// UploadStat 上传统计实体类型别名
+//
+//nolint:revive
+type UploadStat = models.UploadStat
+
+// 上传状态常量别名
+const (
+	UploadStatusPending = models.UploadStatusPending
+	UploadStatusUsed    = models.UploadStatusUsed
+	UploadStatusDeleted = models.UploadStatusDeleted
+)