perf(cache): 三层缓存框架补强

- 新增 cache-framework skill，规范 RAM→Redis→DB 读路径、失效与 pub/sub
- 上传元数据 Otter+Redis 缓存与多节点失效；Auth Source 缓存与 pub/sub
- ListSystemConfigsByKeys 补 Redis 层；上传统计单事务；登录/Token 缓存预热
- cleanup 任务补 upload meta 失效钩子

internal/apps/upload/ingest/remove.go

@@ -6,9 +6,12 @@ package ingest
 import (
 	"context"
 
+	uploadcache "github.com/Rain-kl/Wavelet/internal/apps/upload/cache"
 	uploadstats "github.com/Rain-kl/Wavelet/internal/apps/upload/stats"
+	"github.com/Rain-kl/Wavelet/internal/db"
 	"github.com/Rain-kl/Wavelet/internal/model"
 	"github.com/Rain-kl/Wavelet/internal/repository"
+	"gorm.io/gorm"
 )
 
 // Remove soft-deletes an upload and decrements incremental stats.
@@ -17,8 +20,7 @@ func Remove(ctx context.Context, uploadID uint64) (model.Upload, error) {
 	if err != nil {
 		return model.Upload{}, err
 	}
-	uploadstats.RecordUploadStatsRemove(ctx, &upload)
-	if err := repository.SoftDeleteUpload(ctx, &upload); err != nil {
+	if err := softDeleteUploadWithStats(ctx, &upload); err != nil {
 		return model.Upload{}, err
 	}
 	upload.Status = model.UploadStatusDeleted
@@ -34,10 +36,23 @@ func RemoveOwned(ctx context.Context, userID, uploadID uint64) (model.Upload, er
 	if upload.UserID != userID {
 		return model.Upload{}, ErrForbidden
 	}
-	uploadstats.RecordUploadStatsRemove(ctx, &upload)
-	if err := repository.SoftDeleteUpload(ctx, &upload); err != nil {
+	if err := softDeleteUploadWithStats(ctx, &upload); err != nil {
 		return model.Upload{}, err
 	}
 	upload.Status = model.UploadStatusDeleted
 	return upload, nil
 }
+
+func softDeleteUploadWithStats(ctx context.Context, upload *model.Upload) error {
+	statsSnapshot := *upload
+	if err := db.DB(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := repository.SoftDeleteUploadTx(tx, upload); err != nil {
+			return err
+		}
+		return uploadstats.ApplyUploadStatsDeltaTx(tx, &statsSnapshot, -1)
+	}); err != nil {
+		return err
+	}
+	uploadcache.InvalidateUploadMetaCache(ctx, upload.ID)
+	return nil
+}