refactor(structure): group platform, infra, and shared packages

Reorganize internal packages into platform/infra/shared layers and update
imports, docs, and seed-count tests to match current system configs.

internal/apps/upload/ingest/helpers.go

@@ -15,11 +15,11 @@ import (
 	"github.com/Rain-kl/Wavelet/internal/apps/upload/shared"
 	uploadstats "github.com/Rain-kl/Wavelet/internal/apps/upload/stats"
 	uploadstorage "github.com/Rain-kl/Wavelet/internal/apps/upload/storage"
-	"github.com/Rain-kl/Wavelet/internal/db"
-	"github.com/Rain-kl/Wavelet/internal/db/idgen"
+	"github.com/Rain-kl/Wavelet/internal/infra/objectstore"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
+	"github.com/Rain-kl/Wavelet/internal/infra/persistence/idgen"
 	"github.com/Rain-kl/Wavelet/internal/model"
 	"github.com/Rain-kl/Wavelet/internal/repository"
-	"github.com/Rain-kl/Wavelet/internal/storage"
 	"github.com/Rain-kl/Wavelet/pkg/logger"
 	"gorm.io/gorm"
 )
@@ -84,7 +84,7 @@ func storeObject(ctx context.Context, objectKey string, reader io.Reader, size i
 		return "", ErrStorageReadOnly
 	}
 
-	driver, backend, err := storage.Active(ctx)
+	driver, backend, err := objectstore.Active(ctx)
 	if err != nil {
 		logger.ErrorF(ctx, "初始化活动存储失败: %v", err)
 		return "", errors.New(shared.ErrSaveFileFailed)
@@ -112,7 +112,7 @@ func persistUploadRecord(ctx context.Context, upload *model.Upload, objectKey st
 }
 
 func cleanupUnpersistedObject(ctx context.Context, objectKey string) {
-	_, backend, err := storage.Active(ctx)
+	_, backend, err := objectstore.Active(ctx)
 	if err != nil {
 		return
 	}

internal/apps/upload/ingest/ingest_test.go

@@ -17,9 +17,9 @@ import (
 
 	uploadcache "github.com/Rain-kl/Wavelet/internal/apps/upload/cache"
 	"github.com/Rain-kl/Wavelet/internal/apps/upload/shared"
-	"github.com/Rain-kl/Wavelet/internal/db"
+	"github.com/Rain-kl/Wavelet/internal/infra/objectstore"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
 	"github.com/Rain-kl/Wavelet/internal/model"
-	"github.com/Rain-kl/Wavelet/internal/storage"
 	"github.com/Rain-kl/Wavelet/internal/testhelper"
 	"gorm.io/gorm"
 )
@@ -270,7 +270,7 @@ func TestDedupRecordFailureDoesNotDeleteSharedObject(t *testing.T) {
 		t.Fatalf("shared object delete count = %d, want 0", deleteCount)
 	}
 
-	_, backend, err := storage.Active(ctx)
+	_, backend, err := objectstore.Active(ctx)
 	if err != nil {
 		t.Fatalf("load active storage: %v", err)
 	}
@@ -519,7 +519,7 @@ func setupMockStorage(t *testing.T, putCount *int) (restore func(), disable func
 func setupMockStorageWithDeleteCount(t *testing.T, putCount, deleteCount *int) (restore func(), disable func()) {
 	t.Helper()
 	mockFiles := make(map[string][]byte)
-	restore = storage.MockStorage(
+	restore = objectstore.MockStorage(
 		func(ctx context.Context, key string, body io.Reader, size int64, contentType string) error {
 			data, err := io.ReadAll(body)
 			if err != nil {
@@ -531,12 +531,12 @@ func setupMockStorageWithDeleteCount(t *testing.T, putCount, deleteCount *int) (
 			}
 			return nil
 		},
-		func(ctx context.Context, key string) (*storage.Object, error) {
+		func(ctx context.Context, key string) (*objectstore.Object, error) {
 			data, ok := mockFiles[key]
 			if !ok {
 				return nil, os.ErrNotExist
 			}
-			return &storage.Object{
+			return &objectstore.Object{
 				Body:          io.NopCloser(bytes.NewReader(data)),
 				ContentLength: int64(len(data)),
 				ContentType:   "application/octet-stream",
@@ -550,11 +550,11 @@ func setupMockStorageWithDeleteCount(t *testing.T, putCount, deleteCount *int) (
 			return nil
 		},
 	)
-	storage.IsEnabledFunc = func() bool { return true }
-	storage.ResetCache()
+	objectstore.IsEnabledFunc = func() bool { return true }
+	objectstore.ResetCache()
 	disable = func() {
-		storage.IsEnabledFunc = func() bool { return false }
-		storage.ResetCache()
+		objectstore.IsEnabledFunc = func() bool { return false }
+		objectstore.ResetCache()
 	}
 	return restore, disable
 }

internal/apps/upload/ingest/local_file.go

@@ -10,7 +10,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/Rain-kl/Wavelet/internal/storage"
+	"github.com/Rain-kl/Wavelet/internal/infra/objectstore"
 )
 
 // LocalFileCandidateRequest describes filesystem locations that may host a legacy blob.
@@ -103,7 +103,7 @@ func buildLocalFileCandidates(ctx context.Context, req LocalFileCandidateRequest
 }
 
 func localStorageRoots(ctx context.Context) []string {
-	cfg, err := storage.LoadConfig(ctx)
+	cfg, err := objectstore.LoadConfig(ctx)
 	if err != nil {
 		return nil
 	}

internal/apps/upload/ingest/remove.go

@@ -9,7 +9,7 @@ import (
 	uploadcache "github.com/Rain-kl/Wavelet/internal/apps/upload/cache"
 	"github.com/Rain-kl/Wavelet/internal/apps/upload/shared"
 	uploadstats "github.com/Rain-kl/Wavelet/internal/apps/upload/stats"
-	"github.com/Rain-kl/Wavelet/internal/db"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
 	"github.com/Rain-kl/Wavelet/internal/model"
 	"github.com/Rain-kl/Wavelet/internal/repository"
 	"gorm.io/gorm"