chore: bump version to 0.0.37 [skip ci]

yo 优化

VERSION

@@ -1 +1 @@
-0.0.23
+0.0.37

internal/handler/media.go

@@ -32,7 +32,7 @@ func listLibrariesHandler(svc *service.Container) gin.HandlerFunc {
 			return
 		}
 		role, _ := c.Get(middleware.CtxUserRole)
-		includeHidden := role == "admin" && (c.Query("include_hidden") == "1" || c.Query("all") == "1")
+		includeHidden := role == "admin" && (c.Query("include_hidden") == "1" || c.Query("include_hidden") == "true" || c.Query("all") == "1")
 		if !includeHidden {
 			libs = service.FilterDisplayCloudLibraries(c.Request.Context(), svc.Repo, libs)
 			visibility := mediaVisibilityForRequest(c, svc)
@@ -60,7 +60,7 @@ func getLibraryHandler(svc *service.Container) gin.HandlerFunc {
 			return
 		}
 		role, _ := c.Get(middleware.CtxUserRole)
-		includeHidden := role == "admin" && (c.Query("include_hidden") == "1" || c.Query("all") == "1")
+		includeHidden := role == "admin" && (c.Query("include_hidden") == "1" || c.Query("include_hidden") == "true" || c.Query("all") == "1")
 		if !includeHidden {
 			libs := service.FilterDisplayCloudLibraries(c.Request.Context(), svc.Repo, []model.Library{*lib})
 			if len(libs) == 0 || !service.LibraryVisibleForUser(c.Request.Context(), svc.Repo, libs[0], mediaVisibilityForRequest(c, svc)) {

internal/handler/routes_admin.go

@@ -50,11 +50,14 @@ func registerAdminStrmRoutes(admin *gin.RouterGroup, svc *service.Container) {
 	admin.POST("/strm/downloads/:id/retry", retryStrmDownloadHandler(svc))
 	admin.POST("/strm/downloads/clear-done", clearDoneDownloadsHandler(svc))
 	admin.POST("/strm/downloads/clear-finished", clearFinishedDownloadsHandler(svc))
+	admin.POST("/strm/downloads/clear-canceled", clearCanceledDownloadsHandler(svc))
 	admin.POST("/strm/downloads/retry-failed", retryAllFailedDownloadsHandler(svc))
 	admin.POST("/strm/downloads/cancel-pending", cancelPendingDownloadsHandler(svc))
 	admin.GET("/strm/uploads", uploadQueueHandler(svc))
 	admin.POST("/strm/uploads/:id/cancel", cancelStrmUploadHandler(svc))
 	admin.POST("/strm/uploads/:id/retry", retryStrmUploadHandler(svc))
+	admin.POST("/strm/uploads/cancel-pending", cancelPendingUploadsHandler(svc))
+	admin.POST("/strm/uploads/clear-canceled", clearCanceledUploadsHandler(svc))
 }
 
 func registerAdminUserRoutes(admin *gin.RouterGroup, svc *service.Container) {

internal/handler/strm.go

@@ -178,6 +178,7 @@ type strmSyncPathReq struct {
 	DeleteDir      *bool  `json:"delete_dir"`
 	Cron           string `json:"cron"`
 	EnableCron     *bool  `json:"enable_cron"`
+	SyncMode       string `json:"sync_mode"`
 	Enabled        *bool  `json:"enabled"`
 }
 
@@ -261,7 +262,16 @@ func deleteStrmSyncPathHandler(svc *service.Container) gin.HandlerFunc {
 
 func startStrmSyncHandler(svc *service.Container) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		if err := svc.Strm.StartSync(c.Request.Context(), c.Param("id")); err != nil {
+		mode := c.Query("mode")
+		if mode == "" {
+			var body struct {
+				Mode string `json:"mode"`
+			}
+			if err := c.ShouldBindJSON(&body); err == nil && body.Mode != "" {
+				mode = body.Mode
+			}
+		}
+		if err := svc.Strm.StartSync(c.Request.Context(), c.Param("id"), mode); err != nil {
 			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 			return
 		}
@@ -382,6 +392,28 @@ func clearFinishedDownloadsHandler(svc *service.Container) gin.HandlerFunc {
 	}
 }
 
+func clearCanceledDownloadsHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		n, err := svc.Strm.ClearCanceledDownloadTasks(c.Request.Context())
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"deleted": n})
+	}
+}
+
+func clearCanceledUploadsHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		n, err := svc.Strm.ClearCanceledUploadTasks(c.Request.Context())
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"deleted": n})
+	}
+}
+
 func retryAllFailedDownloadsHandler(svc *service.Container) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		n, err := svc.Strm.RetryAllFailedDownloadTasks(c.Request.Context())
@@ -404,6 +436,17 @@ func cancelPendingDownloadsHandler(svc *service.Container) gin.HandlerFunc {
 	}
 }
 
+func cancelPendingUploadsHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		n, err := svc.Strm.CancelPendingUploadTasks(c.Request.Context())
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"canceled": n})
+	}
+}
+
 // ─── 公开播放端点 ──────────────────────────────────────────────────────────────
 
 // strmPlayHandler 处理 strm 文件指向的播放请求（Emby/Infuse 直接请求，无 JWT）。
@@ -458,6 +501,7 @@ func strmSyncPathFromReq(req strmSyncPathReq) *model.StrmSyncPath {
 		DeleteDir:      boolValue(req.DeleteDir, false),
 		Cron:           strings.TrimSpace(req.Cron),
 		EnableCron:     boolValue(req.EnableCron, false),
+		SyncMode:       strings.TrimSpace(req.SyncMode),
 		Enabled:        boolValue(req.Enabled, true),
 	}
 }

internal/handler/strm_routes_test.go

@@ -50,10 +50,16 @@ func TestStrmAdminRoutesAreRegistered(t *testing.T) {
 		"GET /api/admin/strm/downloads",
 		"POST /api/admin/strm/downloads/:id/cancel",
 		"POST /api/admin/strm/downloads/:id/retry",
-		"GET /api/admin/strm/uploads",
-		"POST /api/admin/strm/uploads/:id/cancel",
-		"POST /api/admin/strm/uploads/:id/retry",
-		"GET /api/strm/play/:provider/:file",
+			"POST /api/admin/strm/downloads/clear-finished",
+			"POST /api/admin/strm/downloads/clear-canceled",
+			"POST /api/admin/strm/downloads/retry-failed",
+			"POST /api/admin/strm/downloads/cancel-pending",
+			"GET /api/admin/strm/uploads",
+			"POST /api/admin/strm/uploads/:id/cancel",
+			"POST /api/admin/strm/uploads/:id/retry",
+			"POST /api/admin/strm/uploads/cancel-pending",
+			"POST /api/admin/strm/uploads/clear-canceled",
+			"GET /api/strm/play/:provider/:file",
 	} {
 		if !routes[want] {
 			t.Fatalf("%s route is not registered", want)

internal/handler/watch_history.go

@@ -163,7 +163,7 @@ func historyDeleteHandler(svc *service.Container) gin.HandlerFunc {
 			c.JSON(http.StatusBadRequest, gin.H{"error": "status must be completed or incomplete"})
 			return
 		}
-		res := q.Delete(&model.PlaybackHistory{})
+			res := q.Unscoped().Delete(&model.PlaybackHistory{})
 		if err := res.Error; err != nil {
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 			return

internal/model/model.go

@@ -54,7 +54,8 @@ func AllModels() []interface{} {
 		&StrmAccount{},
 		&StrmSyncPath{},
 		&StrmSyncRecord{},
-		&StrmDownloadTask{},
-		&StrmUploadTask{},
-	}
+			&StrmDownloadTask{},
+			&StrmUploadTask{},
+			&StrmDirCache{},
+		}
 }

internal/model/strm.go

@@ -48,12 +48,19 @@ type StrmSyncPath struct {
 	DeleteDir       bool       `json:"delete_dir"`                        // 清理多余文件时删除空目录
 	Cron            string     `gorm:"size:128" json:"cron"`              // 5 段 cron 表达式（可选）
 	EnableCron      bool       `json:"enable_cron"`                       // 是否按 Cron 定时同步
+	SyncMode        string     `gorm:"size:32;default:'incremental'" json:"sync_mode"` // 默认同步模式：incremental / full
 	Enabled         bool       `gorm:"default:true" json:"enabled"`
 	LastSyncAt      *time.Time `json:"last_sync_at"`
 	LastSyncStatus  string     `gorm:"size:16" json:"last_sync_status"` // idle/running/ok/error/canceled
 	LastSyncMessage string     `gorm:"size:1024" json:"last_sync_message"`
 }
 
+// STRM 同步类型。
+const (
+	StrmSyncTypeIncremental = "incremental"
+	StrmSyncTypeFull        = "full"
+)
+
 // StrmSyncRecord 是一次同步执行的记录。
 const (
 	StrmSyncRecordPending  = "pending"
@@ -66,6 +73,7 @@ const (
 type StrmSyncRecord struct {
 	Base
 	SyncPathID string     `gorm:"size:36;index" json:"sync_path_id"`
+	SyncType   string     `gorm:"size:32;default:'incremental'" json:"sync_type"` // incremental / full
 	Status     string     `gorm:"size:16;index" json:"status"`
 	Total      int64      `json:"total"`    // 远端发现的文件总数
 	NewStrm    int64      `json:"new_strm"` // 本次新建/更新的 strm 数
@@ -123,3 +131,12 @@ type StrmUploadTask struct {
 	StartedAt  *time.Time `json:"started_at"`
 	FinishedAt *time.Time `json:"finished_at"`
 }
+
+// StrmDirCache 缓存远端网盘目录 ID 与相对路径映射（支持 115 增量同步秒级寻址）。
+type StrmDirCache struct {
+	Base
+	SyncPathID string `gorm:"size:36;index:idx_strm_dir_cache,priority:1" json:"sync_path_id"`
+	DirID      string `gorm:"size:128;index:idx_strm_dir_cache,priority:2" json:"dir_id"`
+	Path       string `gorm:"size:1024" json:"path"` // 相对根目录的路径
+}
+

internal/repository/api_config_repository.go

@@ -62,9 +62,9 @@ func (r *ApiConfigRepository) Update(ctx context.Context, c *model.ApiConfig) er
 	}).Error
 }
 
-// Delete removes an API config.
+// Delete 物理删除 API 配置。
 func (r *ApiConfigRepository) Delete(ctx context.Context, provider string) error {
-	return r.db.WithContext(ctx).Where("provider = ?", provider).Delete(&model.ApiConfig{}).Error
+	return r.db.WithContext(ctx).Unscoped().Where("provider = ?", provider).Delete(&model.ApiConfig{}).Error
 }
 
 // UpdateTestResult 更新测试结果。

internal/repository/favorite_repository.go

@@ -23,7 +23,7 @@ func (r *FavoriteRepository) Toggle(ctx context.Context, userID, mediaID string)
 	if err != nil {
 		return false, err
 	}
-	return false, r.db.WithContext(ctx).Delete(&f).Error
+		return false, r.db.WithContext(ctx).Unscoped().Delete(&f).Error
 }
 
 // ListByUser returns all favourite media IDs for a user.

internal/repository/library_repository.go

@@ -79,10 +79,9 @@ func (r *LibraryRepository) FindByID(ctx context.Context, id string) (*model.Lib
 	return &l, nil
 }
 
-// Delete removes a library and (soft) cascades to its media via repository
-// callers; we do not run CASCADE here to keep this method narrow.
+// Delete 物理删除媒体库。
 func (r *LibraryRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Delete(&model.Library{}, "id = ?", id).Error
+	return r.db.WithContext(ctx).Unscoped().Delete(&model.Library{}, "id = ?", id).Error
 }
 
 func (r *LibraryRepository) ListRoots(ctx context.Context, libraryID string) ([]model.LibraryRoot, error) {
@@ -149,7 +148,7 @@ func (r *LibraryRepository) DeleteRoot(ctx context.Context, libraryID, rootID st
 	if !r.hasLibraryRootsTable() {
 		return nil
 	}
-	return r.db.WithContext(ctx).Where("library_id = ?", libraryID).Delete(&model.LibraryRoot{}, "id = ?", rootID).Error
+	return r.db.WithContext(ctx).Unscoped().Where("library_id = ?", libraryID).Delete(&model.LibraryRoot{}, "id = ?", rootID).Error
 }
 
 func (r *LibraryRepository) hasLibraryRootsTable() bool {

internal/repository/media_repository.go

@@ -116,12 +116,12 @@ func (r *MediaRepository) ListByLibrariesFiltered(ctx context.Context, libraryID
 
 // DeleteByLibrary purges all media tied to a library.
 func (r *MediaRepository) DeleteByLibrary(ctx context.Context, libraryID string) error {
-	// FTS 行由 media 表上的触发器同步清理（软删/硬删都覆盖）。
-	return r.db.WithContext(ctx).Where("library_id = ?", libraryID).Delete(&model.Media{}).Error
+	// FTS 行由 media 表上的触发器同步清理（物理删除触发 FTS 清理）。
+	return r.db.WithContext(ctx).Unscoped().Where("library_id = ?", libraryID).Delete(&model.Media{}).Error
 }
 
 func (r *MediaRepository) DeleteByLibraryRoot(ctx context.Context, libraryID, rootID string) error {
-	return r.db.WithContext(ctx).
+	return r.db.WithContext(ctx).Unscoped().
 		Where("library_id = ? AND library_root_id = ?", libraryID, rootID).
 		Delete(&model.Media{}).Error
 }

internal/repository/permission_repository.go

@@ -51,9 +51,9 @@ func (r *PermissionRepository) Upsert(ctx context.Context, p *model.UserPermissi
 	})
 }
 
-// Delete removes a permission record.
+// Delete 物理删除权限记录。
 func (r *PermissionRepository) Delete(ctx context.Context, userID string) error {
 	return withSQLiteBusyRetry(ctx, func() error {
-		return r.db.WithContext(ctx).Where("user_id = ?", userID).Delete(&model.UserPermission{}).Error
+		return r.db.WithContext(ctx).Unscoped().Where("user_id = ?", userID).Delete(&model.UserPermission{}).Error
 	})
 }

internal/repository/play_profile_repo.go

@@ -59,9 +59,9 @@ func (r *PlayProfileRepository) Update(ctx context.Context, id string, patch map
 		Where("id = ?", id).Updates(patch).Error
 }
 
-// Delete soft-deletes a profile.
+// Delete 物理删除播放档案。
 func (r *PlayProfileRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Delete(&model.PlayProfile{}, "id = ?", id).Error
+	return r.db.WithContext(ctx).Unscoped().Delete(&model.PlayProfile{}, "id = ?", id).Error
 }
 
 // ClearDefaultsFor resets is_default for all of a user's profiles.

internal/repository/refresh_token_repository.go

@@ -72,10 +72,10 @@ func (r *RefreshTokenRepository) RevokeOldestActiveByUserID(ctx context.Context,
 	})
 }
 
-// DeleteExpired removes all expired refresh tokens.
+// DeleteExpired 物理清理所有过期的 refresh tokens。
 func (r *RefreshTokenRepository) DeleteExpired(ctx context.Context) error {
 	return withSQLiteBusyRetry(ctx, func() error {
-		return r.db.WithContext(ctx).Where("expires_at < ?", time.Now()).Delete(&model.RefreshToken{}).Error
+		return r.db.WithContext(ctx).Unscoped().Where("expires_at < ?", time.Now()).Delete(&model.RefreshToken{}).Error
 	})
 }
 

internal/repository/repository.go

@@ -31,6 +31,7 @@ type Container struct {
 	StrmSyncRecord *StrmSyncRecordRepository
 	StrmDownload   *StrmDownloadTaskRepository
 	StrmUpload     *StrmUploadTaskRepository
+	StrmDirCache   *StrmDirCacheRepository
 }
 
 // New 将每个 repository 连接到单个 *gorm.DB。
@@ -58,5 +59,6 @@ func New(db *gorm.DB) *Container {
 		StrmSyncRecord: &StrmSyncRecordRepository{db: db},
 		StrmDownload:   &StrmDownloadTaskRepository{db: db},
 		StrmUpload:     &StrmUploadTaskRepository{db: db},
+		StrmDirCache:   &StrmDirCacheRepository{db: db},
 	}
 }

internal/repository/setting_repository.go

@@ -29,9 +29,9 @@ func (r *SettingRepository) Set(ctx context.Context, key, value string) error {
 	return r.db.WithContext(ctx).Save(&s).Error
 }
 
-// Delete removes a setting key.
+// Delete 物理删除设置键。
 func (r *SettingRepository) Delete(ctx context.Context, key string) error {
-	return r.db.WithContext(ctx).Where("key = ?", key).Delete(&model.Setting{}).Error
+	return r.db.WithContext(ctx).Unscoped().Where("key = ?", key).Delete(&model.Setting{}).Error
 }
 
 // All returns every key/value pair (used by the admin UI).

internal/repository/storage_config_repo.go

@@ -66,9 +66,9 @@ func (r *StorageConfigRepository) Upsert(ctx context.Context, c *model.StorageCo
 	}).Error
 }
 
-// Delete removes a storage config by ID.
+// Delete 物理删除存储配置。
 func (r *StorageConfigRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Where("id = ?", id).Delete(&model.StorageConfig{}).Error
+	return r.db.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.StorageConfig{}).Error
 }
 
 // FindByID returns a storage config by ID.

internal/repository/strm_repository.go

@@ -3,6 +3,7 @@ package repository
 import (
 	"context"
 	"errors"
+	"sync"
 	"time"
 
 	"gorm.io/gorm"
@@ -10,13 +11,17 @@ import (
 	"github.com/ShukeBta/MMTL/internal/model"
 )
 
+var strmClaimMu sync.Mutex
+
 // ─── StrmAccount ───────────────────────────────────────────────────────────────
 
 // StrmAccountRepository persists model.StrmAccount.
 type StrmAccountRepository struct{ db *gorm.DB }
 
 func (r *StrmAccountRepository) Create(ctx context.Context, a *model.StrmAccount) error {
-	return r.db.WithContext(ctx).Create(a).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Create(a).Error
+	})
 }
 
 func (r *StrmAccountRepository) FindByID(ctx context.Context, id string) (*model.StrmAccount, error) {
@@ -38,20 +43,24 @@ func (r *StrmAccountRepository) List(ctx context.Context) ([]model.StrmAccount,
 }
 
 func (r *StrmAccountRepository) Update(ctx context.Context, a *model.StrmAccount) error {
-	return r.db.WithContext(ctx).Model(&model.StrmAccount{}).Where("id = ?", a.ID).Updates(map[string]any{
-		"name":             a.Name,
-		"provider":         a.Provider,
-		"config":           a.Config,
-		"enabled":          a.Enabled,
-		"last_test_at":     a.LastTestAt,
-		"last_test_result": a.LastTestResult,
-		"last_test_ok":     a.LastTestOK,
-		"updated_at":       time.Now(),
-	}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Model(&model.StrmAccount{}).Where("id = ?", a.ID).Updates(map[string]any{
+			"name":             a.Name,
+			"provider":         a.Provider,
+			"config":           a.Config,
+			"enabled":          a.Enabled,
+			"last_test_at":     a.LastTestAt,
+			"last_test_result": a.LastTestResult,
+			"last_test_ok":     a.LastTestOK,
+			"updated_at":       time.Now(),
+		}).Error
+	})
 }
 
 func (r *StrmAccountRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Where("id = ?", id).Delete(&model.StrmAccount{}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.StrmAccount{}).Error
+	})
 }
 
 // ─── StrmSyncPath ──────────────────────────────────────────────────────────────
@@ -60,7 +69,9 @@ func (r *StrmAccountRepository) Delete(ctx context.Context, id string) error {
 type StrmSyncPathRepository struct{ db *gorm.DB }
 
 func (r *StrmSyncPathRepository) Create(ctx context.Context, p *model.StrmSyncPath) error {
-	return r.db.WithContext(ctx).Create(p).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Create(p).Error
+	})
 }
 
 func (r *StrmSyncPathRepository) FindByID(ctx context.Context, id string) (*model.StrmSyncPath, error) {
@@ -82,33 +93,38 @@ func (r *StrmSyncPathRepository) List(ctx context.Context) ([]model.StrmSyncPath
 }
 
 func (r *StrmSyncPathRepository) Update(ctx context.Context, p *model.StrmSyncPath) error {
-	return r.db.WithContext(ctx).Model(&model.StrmSyncPath{}).Where("id = ?", p.ID).Updates(map[string]any{
-		"name":              p.Name,
-		"account_id":        p.AccountID,
-		"provider":          p.Provider,
-		"remote_path":       p.RemotePath,
-		"local_path":        p.LocalPath,
-		"strm_base_url":     p.StrmBaseURL,
-		"video_ext":         p.VideoExt,
-		"meta_ext":          p.MetaExt,
-		"exclude_name":      p.ExcludeName,
-		"min_video_size_mb": p.MinVideoSizeMB,
-		"add_path":          p.AddPath,
-		"download_meta":     p.DownloadMeta,
-		"upload_meta":       p.UploadMeta,
-		"delete_dir":        p.DeleteDir,
-		"cron":              p.Cron,
-		"enable_cron":       p.EnableCron,
-		"enabled":           p.Enabled,
-		"last_sync_at":      p.LastSyncAt,
-		"last_sync_status":  p.LastSyncStatus,
-		"last_sync_message": p.LastSyncMessage,
-		"updated_at":        time.Now(),
-	}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Model(&model.StrmSyncPath{}).Where("id = ?", p.ID).Updates(map[string]any{
+			"name":              p.Name,
+			"account_id":        p.AccountID,
+			"provider":          p.Provider,
+			"remote_path":       p.RemotePath,
+			"local_path":        p.LocalPath,
+			"strm_base_url":     p.StrmBaseURL,
+			"video_ext":         p.VideoExt,
+			"meta_ext":          p.MetaExt,
+			"exclude_name":      p.ExcludeName,
+			"min_video_size_mb": p.MinVideoSizeMB,
+			"add_path":          p.AddPath,
+			"download_meta":     p.DownloadMeta,
+			"upload_meta":       p.UploadMeta,
+			"delete_dir":        p.DeleteDir,
+			"cron":              p.Cron,
+			"enable_cron":       p.EnableCron,
+			"sync_mode":         p.SyncMode,
+			"enabled":           p.Enabled,
+			"last_sync_at":      p.LastSyncAt,
+			"last_sync_status":  p.LastSyncStatus,
+			"last_sync_message": p.LastSyncMessage,
+			"updated_at":        time.Now(),
+		}).Error
+	})
 }
 
 func (r *StrmSyncPathRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Where("id = ?", id).Delete(&model.StrmSyncPath{}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.StrmSyncPath{}).Error
+	})
 }
 
 // ─── StrmSyncRecord ────────────────────────────────────────────────────────────
@@ -117,23 +133,28 @@ func (r *StrmSyncPathRepository) Delete(ctx context.Context, id string) error {
 type StrmSyncRecordRepository struct{ db *gorm.DB }
 
 func (r *StrmSyncRecordRepository) Create(ctx context.Context, rec *model.StrmSyncRecord) error {
-	return r.db.WithContext(ctx).Create(rec).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Create(rec).Error
+	})
 }
 
 func (r *StrmSyncRecordRepository) Update(ctx context.Context, rec *model.StrmSyncRecord) error {
-	return r.db.WithContext(ctx).Model(&model.StrmSyncRecord{}).Where("id = ?", rec.ID).Updates(map[string]any{
-		"status":      rec.Status,
-		"total":       rec.Total,
-		"new_strm":    rec.NewStrm,
-		"new_meta":    rec.NewMeta,
-		"uploaded":    rec.Uploaded,
-		"pruned":      rec.Pruned,
-		"skipped":     rec.Skipped,
-		"message":     rec.Message,
-		"started_at":  rec.StartedAt,
-		"finished_at": rec.FinishedAt,
-		"updated_at":  time.Now(),
-	}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Model(&model.StrmSyncRecord{}).Where("id = ?", rec.ID).Updates(map[string]any{
+			"sync_type":   rec.SyncType,
+			"status":      rec.Status,
+			"total":       rec.Total,
+			"new_strm":    rec.NewStrm,
+			"new_meta":    rec.NewMeta,
+			"uploaded":    rec.Uploaded,
+			"pruned":      rec.Pruned,
+			"skipped":     rec.Skipped,
+			"message":     rec.Message,
+			"started_at":  rec.StartedAt,
+			"finished_at": rec.FinishedAt,
+			"updated_at":  time.Now(),
+		}).Error
+	})
 }
 
 func (r *StrmSyncRecordRepository) List(ctx context.Context, syncPathID string, limit int) ([]model.StrmSyncRecord, error) {
@@ -155,7 +176,21 @@ func (r *StrmSyncRecordRepository) List(ctx context.Context, syncPathID string,
 type StrmDownloadTaskRepository struct{ db *gorm.DB }
 
 func (r *StrmDownloadTaskRepository) Create(ctx context.Context, t *model.StrmDownloadTask) error {
-	return r.db.WithContext(ctx).Create(t).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Create(t).Error
+	})
+}
+
+func (r *StrmDownloadTaskRepository) CreateInBatches(ctx context.Context, tasks []*model.StrmDownloadTask, batchSize int) error {
+	if len(tasks) == 0 {
+		return nil
+	}
+	if batchSize <= 0 {
+		batchSize = 100
+	}
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).CreateInBatches(tasks, batchSize).Error
+	})
 }
 
 func (r *StrmDownloadTaskRepository) FindByID(ctx context.Context, id string) (*model.StrmDownloadTask, error) {
@@ -205,24 +240,29 @@ func (r *StrmDownloadTaskRepository) CountByStatus(ctx context.Context) (map[str
 // ClaimPendingDownload picks the oldest pending task and marks it running.
 // Returns (nil, nil) when the queue is empty.
 func (r *StrmDownloadTaskRepository) ClaimPendingDownload(ctx context.Context, limit int) ([]model.StrmDownloadTask, error) {
+	strmClaimMu.Lock()
+	defer strmClaimMu.Unlock()
+
 	var rows []model.StrmDownloadTask
-	err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-		if err := tx.Where("status = ? AND (next_try_at IS NULL OR next_try_at <= ?)", model.StrmTaskPending, time.Now()).
-			Order("created_at asc").Limit(limit).Find(&rows).Error; err != nil {
-			return err
-		}
-		if len(rows) == 0 {
-			return nil
-		}
-		ids := make([]string, 0, len(rows))
-		now := time.Now()
-		for i := range rows {
-			ids = append(ids, rows[i].ID)
-			rows[i].Status = model.StrmTaskRunning
-			rows[i].StartedAt = &now
-		}
-		return tx.Model(&model.StrmDownloadTask{}).Where("id IN ?", ids).
-			Updates(map[string]any{"status": model.StrmTaskRunning, "started_at": now}).Error
+	err := withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			if err := tx.Where("status = ? AND (next_try_at IS NULL OR next_try_at <= ?)", model.StrmTaskPending, time.Now()).
+				Order("created_at asc").Limit(limit).Find(&rows).Error; err != nil {
+				return err
+			}
+			if len(rows) == 0 {
+				return nil
+			}
+			ids := make([]string, 0, len(rows))
+			now := time.Now()
+			for i := range rows {
+				ids = append(ids, rows[i].ID)
+				rows[i].Status = model.StrmTaskRunning
+				rows[i].StartedAt = &now
+			}
+			return tx.Model(&model.StrmDownloadTask{}).Where("id IN ?", ids).
+				Updates(map[string]any{"status": model.StrmTaskRunning, "started_at": now}).Error
+		})
 	})
 	if err != nil {
 		return nil, err
@@ -231,62 +271,97 @@ func (r *StrmDownloadTaskRepository) ClaimPendingDownload(ctx context.Context, l
 }
 
 func (r *StrmDownloadTaskRepository) Update(ctx context.Context, t *model.StrmDownloadTask) error {
-	return r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).Where("id = ?", t.ID).Updates(map[string]any{
-		"status":      t.Status,
-		"error":       t.Error,
-		"retry_count": t.RetryCount,
-		"next_try_at": t.NextTryAt,
-		"started_at":  t.StartedAt,
-		"finished_at": t.FinishedAt,
-		"updated_at":  time.Now(),
-	}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).Where("id = ?", t.ID).Updates(map[string]any{
+			"status":      t.Status,
+			"error":       t.Error,
+			"retry_count": t.RetryCount,
+			"next_try_at": t.NextTryAt,
+			"started_at":  t.StartedAt,
+			"finished_at": t.FinishedAt,
+			"updated_at":  time.Now(),
+		}).Error
+	})
 }
 
 func (r *StrmDownloadTaskRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Where("id = ?", id).Delete(&model.StrmDownloadTask{}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.StrmDownloadTask{}).Error
+	})
 }
 
 // ClearDone 清空全部已完成下载任务。
 func (r *StrmDownloadTaskRepository) ClearDone(ctx context.Context) (int64, error) {
-	res := r.db.WithContext(ctx).Where("status = ?", model.StrmTaskDone).Delete(&model.StrmDownloadTask{})
-	return res.RowsAffected, res.Error
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Unscoped().Where("status = ?", model.StrmTaskDone).Delete(&model.StrmDownloadTask{})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
 }
 
 // ClearFinished 清空全部已完成与失败下载任务。
 func (r *StrmDownloadTaskRepository) ClearFinished(ctx context.Context) (int64, error) {
-	res := r.db.WithContext(ctx).Where("status IN ?", []string{model.StrmTaskDone, model.StrmTaskFailed}).
-		Delete(&model.StrmDownloadTask{})
-	return res.RowsAffected, res.Error
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Unscoped().Where("status IN ?", []string{model.StrmTaskDone, model.StrmTaskFailed, model.StrmTaskCanceled}).
+			Delete(&model.StrmDownloadTask{})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
+}
+
+// ClearCanceled 清空全部已取消下载任务。
+func (r *StrmDownloadTaskRepository) ClearCanceled(ctx context.Context) (int64, error) {
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Unscoped().Where("status = ?", model.StrmTaskCanceled).Delete(&model.StrmDownloadTask{})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
 }
 
 // RetryAllFailed 把所有失败任务重置回待处理，清空错误与重试计数。
 func (r *StrmDownloadTaskRepository) RetryAllFailed(ctx context.Context) (int64, error) {
-	res := r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).
-		Where("status = ?", model.StrmTaskFailed).
-		Updates(map[string]any{
-			"status":      model.StrmTaskPending,
-			"error":       "",
-			"retry_count": 0,
-			"next_try_at": nil,
-			"started_at":  nil,
-			"finished_at": nil,
-			"updated_at":  time.Now(),
-		})
-	return res.RowsAffected, res.Error
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).
+			Where("status = ?", model.StrmTaskFailed).
+			Updates(map[string]any{
+				"status":      model.StrmTaskPending,
+				"error":       "",
+				"retry_count": 0,
+				"next_try_at": nil,
+				"started_at":  nil,
+				"finished_at": nil,
+				"updated_at":  time.Now(),
+			})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
 }
 
-// CancelPending 批量取消所有排队中的任务。
+// CancelPending 批量取消所有排队中和进行中的任务。
 func (r *StrmDownloadTaskRepository) CancelPending(ctx context.Context) (int64, error) {
 	now := time.Now()
-	res := r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).
-		Where("status = ?", model.StrmTaskPending).
-		Updates(map[string]any{
-			"status":      model.StrmTaskCanceled,
-			"error":       "已批量取消",
-			"finished_at": now,
-			"updated_at":  now,
-		})
-	return res.RowsAffected, res.Error
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).
+			Where("status IN ?", []string{model.StrmTaskPending, model.StrmTaskRunning}).
+			Updates(map[string]any{
+				"status":      model.StrmTaskCanceled,
+				"error":       "已批量取消",
+				"finished_at": now,
+				"updated_at":  now,
+			})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
 }
 
 // CountActive 统计某同步目录下目标仍在排队/进行的任务数（用于去重）。
@@ -299,10 +374,28 @@ func (r *StrmDownloadTaskRepository) CountActive(ctx context.Context, syncPathID
 	return count
 }
 
+// GetActiveLocalPathMap 一次性获取某同步目录下正在排队或执行中的 local_path 集合，供同步时 O(1) 内存去重。
+func (r *StrmDownloadTaskRepository) GetActiveLocalPathMap(ctx context.Context, syncPathID string) (map[string]bool, error) {
+	var paths []string
+	err := r.db.WithContext(ctx).Model(&model.StrmDownloadTask{}).
+		Where("sync_path_id = ? AND status IN ?", syncPathID, []string{model.StrmTaskPending, model.StrmTaskRunning}).
+		Pluck("local_path", &paths).Error
+	if err != nil {
+		return nil, err
+	}
+	out := make(map[string]bool, len(paths))
+	for _, p := range paths {
+		out[p] = true
+	}
+	return out, nil
+}
+
 func (r *StrmDownloadTaskRepository) DeleteFinishedOlderThan(ctx context.Context, before time.Time) error {
-	return r.db.WithContext(ctx).Where("status IN ? AND finished_at < ?",
-		[]string{model.StrmTaskDone, model.StrmTaskFailed, model.StrmTaskCanceled}, before).
-		Delete(&model.StrmDownloadTask{}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("status IN ? AND finished_at < ?",
+			[]string{model.StrmTaskDone, model.StrmTaskFailed, model.StrmTaskCanceled}, before).
+			Delete(&model.StrmDownloadTask{}).Error
+	})
 }
 
 // ─── StrmUploadTask ────────────────────────────────────────────────────────────
@@ -311,7 +404,21 @@ func (r *StrmDownloadTaskRepository) DeleteFinishedOlderThan(ctx context.Context
 type StrmUploadTaskRepository struct{ db *gorm.DB }
 
 func (r *StrmUploadTaskRepository) Create(ctx context.Context, t *model.StrmUploadTask) error {
-	return r.db.WithContext(ctx).Create(t).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Create(t).Error
+	})
+}
+
+func (r *StrmUploadTaskRepository) CreateInBatches(ctx context.Context, tasks []*model.StrmUploadTask, batchSize int) error {
+	if len(tasks) == 0 {
+		return nil
+	}
+	if batchSize <= 0 {
+		batchSize = 100
+	}
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).CreateInBatches(tasks, batchSize).Error
+	})
 }
 
 func (r *StrmUploadTaskRepository) FindByID(ctx context.Context, id string) (*model.StrmUploadTask, error) {
@@ -380,24 +487,29 @@ func (r *StrmUploadTaskRepository) CountByStatus(ctx context.Context) (map[strin
 // ClaimPendingUpload picks the oldest pending task and marks it running.
 // Returns (nil, nil) when the queue is empty.
 func (r *StrmUploadTaskRepository) ClaimPendingUpload(ctx context.Context, limit int) ([]model.StrmUploadTask, error) {
+	strmClaimMu.Lock()
+	defer strmClaimMu.Unlock()
+
 	var rows []model.StrmUploadTask
-	err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-		if err := tx.Where("status = ? AND (next_try_at IS NULL OR next_try_at <= ?)", model.StrmTaskPending, time.Now()).
-			Order("created_at asc").Limit(limit).Find(&rows).Error; err != nil {
-			return err
-		}
-		if len(rows) == 0 {
-			return nil
-		}
-		ids := make([]string, 0, len(rows))
-		now := time.Now()
-		for i := range rows {
-			ids = append(ids, rows[i].ID)
-			rows[i].Status = model.StrmTaskRunning
-			rows[i].StartedAt = &now
-		}
-		return tx.Model(&model.StrmUploadTask{}).Where("id IN ?", ids).
-			Updates(map[string]any{"status": model.StrmTaskRunning, "started_at": now}).Error
+	err := withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			if err := tx.Where("status = ? AND (next_try_at IS NULL OR next_try_at <= ?)", model.StrmTaskPending, time.Now()).
+				Order("created_at asc").Limit(limit).Find(&rows).Error; err != nil {
+				return err
+			}
+			if len(rows) == 0 {
+				return nil
+			}
+			ids := make([]string, 0, len(rows))
+			now := time.Now()
+			for i := range rows {
+				ids = append(ids, rows[i].ID)
+				rows[i].Status = model.StrmTaskRunning
+				rows[i].StartedAt = &now
+			}
+			return tx.Model(&model.StrmUploadTask{}).Where("id IN ?", ids).
+				Updates(map[string]any{"status": model.StrmTaskRunning, "started_at": now}).Error
+		})
 	})
 	if err != nil {
 		return nil, err
@@ -406,19 +518,53 @@ func (r *StrmUploadTaskRepository) ClaimPendingUpload(ctx context.Context, limit
 }
 
 func (r *StrmUploadTaskRepository) Update(ctx context.Context, t *model.StrmUploadTask) error {
-	return r.db.WithContext(ctx).Model(&model.StrmUploadTask{}).Where("id = ?", t.ID).Updates(map[string]any{
-		"status":      t.Status,
-		"error":       t.Error,
-		"retry_count": t.RetryCount,
-		"next_try_at": t.NextTryAt,
-		"started_at":  t.StartedAt,
-		"finished_at": t.FinishedAt,
-		"updated_at":  time.Now(),
-	}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Model(&model.StrmUploadTask{}).Where("id = ?", t.ID).Updates(map[string]any{
+			"status":      t.Status,
+			"error":       t.Error,
+			"retry_count": t.RetryCount,
+			"next_try_at": t.NextTryAt,
+			"started_at":  t.StartedAt,
+			"finished_at": t.FinishedAt,
+			"updated_at":  time.Now(),
+		}).Error
+	})
 }
 
 func (r *StrmUploadTaskRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Where("id = ?", id).Delete(&model.StrmUploadTask{}).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.StrmUploadTask{}).Error
+	})
+}
+
+// ClearCanceled 清空全部已取消上传任务。
+func (r *StrmUploadTaskRepository) ClearCanceled(ctx context.Context) (int64, error) {
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Unscoped().Where("status = ?", model.StrmTaskCanceled).Delete(&model.StrmUploadTask{})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
+}
+
+// CancelPending 批量取消所有排队中和进行中的任务。
+func (r *StrmUploadTaskRepository) CancelPending(ctx context.Context) (int64, error) {
+	now := time.Now()
+	var count int64
+	err := withSQLiteBusyRetry(ctx, func() error {
+		res := r.db.WithContext(ctx).Model(&model.StrmUploadTask{}).
+			Where("status IN ?", []string{model.StrmTaskPending, model.StrmTaskRunning}).
+			Updates(map[string]any{
+				"status":      model.StrmTaskCanceled,
+				"error":       "已批量取消",
+				"finished_at": now,
+				"updated_at":  now,
+			})
+		count = res.RowsAffected
+		return res.Error
+	})
+	return count, err
 }
 
 // CountActive 统计某同步目录下目标仍在排队/进行的任务数（用于去重）。
@@ -431,8 +577,67 @@ func (r *StrmUploadTaskRepository) CountActive(ctx context.Context, syncPathID,
 	return count
 }
 
-func (r *StrmUploadTaskRepository) DeleteFinishedOlderThan(ctx context.Context, before time.Time) error {
-	return r.db.WithContext(ctx).Where("status IN ? AND finished_at < ?",
-		[]string{model.StrmTaskDone, model.StrmTaskFailed, model.StrmTaskCanceled}, before).
-		Delete(&model.StrmUploadTask{}).Error
+// GetActiveLocalPathMap 一次性获取某同步目录下正在排队或执行中的 local_path 集合，供同步时 O(1) 内存去重。
+func (r *StrmUploadTaskRepository) GetActiveLocalPathMap(ctx context.Context, syncPathID string) (map[string]bool, error) {
+	var paths []string
+	err := r.db.WithContext(ctx).Model(&model.StrmUploadTask{}).
+		Where("sync_path_id = ? AND status IN ?", syncPathID, []string{model.StrmTaskPending, model.StrmTaskRunning}).
+		Pluck("local_path", &paths).Error
+	if err != nil {
+		return nil, err
+	}
+	out := make(map[string]bool, len(paths))
+	for _, p := range paths {
+		out[p] = true
+	}
+	return out, nil
 }
+
+func (r *StrmUploadTaskRepository) DeleteFinishedOlderThan(ctx context.Context, before time.Time) error {
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("status IN ? AND finished_at < ?",
+			[]string{model.StrmTaskDone, model.StrmTaskFailed, model.StrmTaskCanceled}, before).
+			Delete(&model.StrmUploadTask{}).Error
+	})
+}
+
+// ─── StrmDirCache ─────────────────────────────────────────────────────────────
+
+// StrmDirCacheRepository persists model.StrmDirCache.
+type StrmDirCacheRepository struct{ db *gorm.DB }
+
+func (r *StrmDirCacheRepository) ListBySyncPathID(ctx context.Context, syncPathID string) ([]model.StrmDirCache, error) {
+	var rows []model.StrmDirCache
+	err := r.db.WithContext(ctx).Where("sync_path_id = ?", syncPathID).Find(&rows).Error
+	return rows, err
+}
+
+func (r *StrmDirCacheRepository) Set(ctx context.Context, syncPathID, dirID, path string) error {
+	return withSQLiteBusyRetry(ctx, func() error {
+		var row model.StrmDirCache
+		err := r.db.WithContext(ctx).Where("sync_path_id = ? AND dir_id = ?", syncPathID, dirID).First(&row).Error
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			row = model.StrmDirCache{
+				SyncPathID: syncPathID,
+				DirID:      dirID,
+				Path:       path,
+			}
+			return r.db.WithContext(ctx).Create(&row).Error
+		}
+		if err != nil {
+			return err
+		}
+		return r.db.WithContext(ctx).Model(&model.StrmDirCache{}).Where("id = ?", row.ID).Updates(map[string]any{
+			"path":       path,
+			"updated_at": time.Now(),
+		}).Error
+	})
+}
+
+func (r *StrmDirCacheRepository) DeleteBySyncPathID(ctx context.Context, syncPathID string) error {
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Unscoped().Where("sync_path_id = ?", syncPathID).Delete(&model.StrmDirCache{}).Error
+	})
+}
+
+

internal/repository/user_repository.go

@@ -133,26 +133,17 @@ func (r *UserRepository) TouchLogin(ctx context.Context, id string) error {
 	})
 }
 
-// Delete removes a user (soft-delete via gorm.DeletedAt), releases the unique
-// username, and drops Telegram bindings so future re-created users bind cleanly.
+// Delete 物理删除用户并级联清理其关联记录。
 func (r *UserRepository) Delete(ctx context.Context, id string) error {
-	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-		var user model.User
-		if err := tx.Where("id = ?", id).First(&user).Error; err != nil {
-			return err
-		}
-		released := user.Username + "__deleted__" + time.Now().Format("20060102150405.000000000")
-		if len(released) > 64 {
-			sum := sha256.Sum256([]byte(user.ID + user.Username))
-			base := user.Username
-			if len(base) > 43 {
-				base = base[:43]
-			}
-			released = base + "__deleted__" + hex.EncodeToString(sum[:])[:10]
-		}
-		if err := tx.Model(&model.User{}).Where("id = ?", id).Update("username", released).Error; err != nil {
-			return err
-		}
-		return tx.Delete(&model.User{}, "id = ?", id).Error
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			_ = tx.Unscoped().Where("user_id = ?", id).Delete(&model.RefreshToken{})
+			_ = tx.Unscoped().Where("user_id = ?", id).Delete(&model.UserPermission{})
+			_ = tx.Unscoped().Where("user_id = ?", id).Delete(&model.PlayProfile{})
+			_ = tx.Unscoped().Where("user_id = ?", id).Delete(&model.PlaybackHistory{})
+			_ = tx.Unscoped().Where("user_id = ?", id).Delete(&model.Favorite{})
+			_ = tx.Unscoped().Where("user_id = ?", id).Delete(&model.UserDevice{})
+			return tx.Unscoped().Delete(&model.User{}, "id = ?", id).Error
+		})
 	})
 }

internal/service/cloud/cloud.go

@@ -37,10 +37,11 @@ var ErrUnsupported = errors.New("unsupported cloud provider")
 
 // FileEntry is one item in a cloud directory listing.
 type FileEntry struct {
-	ID    string `json:"id"` // provider-native file id
-	Name  string `json:"name"`
-	IsDir bool   `json:"is_dir"`
-	Size  int64  `json:"size"`
+	ID       string `json:"id"` // provider-native file id
+	Name     string `json:"name"`
+	IsDir    bool   `json:"is_dir"`
+	Size     int64  `json:"size"`
+	MTime    int64  `json:"mtime,omitempty"`
 	// PickCode is 115-specific; other providers use ID directly.
 	PickCode string `json:"pick_code,omitempty"`
 }

internal/service/cloud/pan115_openapi.go

@@ -22,6 +22,12 @@ import (
 	"github.com/ShukeBta/MMTL/internal/service/cloud115"
 )
 
+// OpenAPI115Provider 暴露 115 开放平台驱动接口。
+type OpenAPI115Provider interface {
+	Provider
+	OpenClient() *cloud115.OpenClient
+}
+
 // openAPI115Provider 实现 Provider 接口：List 列目录、Resolve 用 pickcode
 // 换下载直链（302 offload，无需代理）、Ping 探测根目录。
 type openAPI115Provider struct {
@@ -55,15 +61,16 @@ func (p *openAPI115Provider) List(ctx context.Context, dirID string) ([]FileEntr
 		if err != nil {
 			return nil, err
 		}
-		for _, f := range files {
-			out = append(out, FileEntry{
-				ID:       f.FileId,
-				Name:     f.FileName,
-				IsDir:    f.Category == cloud115.TypeDir,
-				Size:     f.FileSize,
-				PickCode: f.PickCode,
-			})
-		}
+			for _, f := range files {
+				out = append(out, FileEntry{
+					ID:       f.FileId,
+					Name:     f.FileName,
+					IsDir:    f.Category == cloud115.TypeDir,
+					Size:     f.FileSize,
+					MTime:    f.Utime,
+					PickCode: f.PickCode,
+				})
+			}
 		if len(files) < pageSize {
 			break
 		}

internal/service/cloud115/client.go

@@ -90,6 +90,7 @@ type RespBase struct {
 	Errno   int             `json:"errno"`
 	Message string          `json:"message"`
 	Error   string          `json:"error"`
+	Count   int64           `json:"count"`
 	Data    json.RawMessage `json:"data"`
 	Raw     json.RawMessage `json:"-"` // 原始响应体（外层附加字段用）
 }

internal/service/cloud115/cloud115_test.go

@@ -371,7 +371,62 @@ func TestThrottleCodeHandling(t *testing.T) {
 	if err == nil {
 		t.Fatal("expected throttle error")
 	}
-	if !tm.IsThrottled() {
-		t.Fatal("code 770004 should trigger throttle status")
+		if !tm.IsThrottled() {
+			t.Fatal("code 770004 should trigger throttle status")
+		}
 	}
-}
+
+	func TestRemoteFileDetailRelativePath(t *testing.T) {
+		rootCID := "3238787832374488117" // 影视库
+
+		// 场景 1：115 目录 paths 中只有祖先目录链，不包含自身
+		d1 := &RemoteFileDetail{
+			FileId:   "3251154147730910635",
+			FileName: "出包王女",
+			Paths: []struct {
+				FileId string `json:"file_id"`
+				Name   string `json:"file_name"`
+			}{
+				{FileId: "0", Name: "根目录"},
+				{FileId: "3238787832374488117", Name: "影视库"},
+				{FileId: "3238787913223892116", Name: "动漫"},
+			},
+		}
+		if got := d1.RelativePath(rootCID); got != "动漫/出包王女" {
+			t.Errorf("d1.RelativePath = %q, want %q", got, "动漫/出包王女")
+		}
+
+		// 场景 2：祖先中间目录，自身在 paths 末尾
+		d2 := &RemoteFileDetail{
+			FileId:   "3238787913223892116",
+			FileName: "动漫",
+			Paths: []struct {
+				FileId string `json:"file_id"`
+				Name   string `json:"file_name"`
+			}{
+				{FileId: "0", Name: "根目录"},
+				{FileId: "3238787832374488117", Name: "影视库"},
+				{FileId: "3238787913223892116", Name: "动漫"},
+			},
+		}
+		if got := d2.RelativePath(rootCID); got != "动漫" {
+			t.Errorf("d2.RelativePath = %q, want %q", got, "动漫")
+		}
+
+		// 场景 3：根同步目录自身
+		d3 := &RemoteFileDetail{
+			FileId:   rootCID,
+			FileName: "影视库",
+			Paths: []struct {
+				FileId string `json:"file_id"`
+				Name   string `json:"file_name"`
+			}{
+				{FileId: "0", Name: "根目录"},
+				{FileId: rootCID, Name: "影视库"},
+			},
+		}
+		if got := d3.RelativePath(rootCID); got != "" {
+			t.Errorf("d3.RelativePath = %q, want %q", got, "")
+		}
+	}
+

internal/service/cloud115/open.go

@@ -89,6 +89,36 @@ func (c *OpenClient) GetFsList(ctx context.Context, cid string, offset, limit in
 	return files, strings.Join(pathStr, "/"), nil
 }
 
+// GetFsListFlat 递归扁平化列出 cid 下的所有文件（跨越所有子目录，不包含文件夹节点），并返回文件列表与该树下的总文件数。
+// 类似于 QMediaSync 的 115 扁平化批量拉取机制，极大地降低多层级子目录下的 API 请求次数。
+func (c *OpenClient) GetFsListFlat(ctx context.Context, cid string, offset, limit int) ([]RemoteFile, int64, error) {
+	if cid == "" {
+		cid = "0"
+	}
+	if limit <= 0 {
+		limit = 1150
+	}
+	params := map[string]string{
+		"cid":      cid,
+		"limit":    fmt.Sprint(limit),
+		"offset":   fmt.Sprint(offset),
+		"cur":      "0",
+		"show_dir": "0",
+	}
+	resp, err := c.doAuthJSON(ctx, "GET", ProAPIBase+"/open/ufile/files", params, 2)
+	if err != nil {
+		return nil, 0, err
+	}
+	if !resp.State {
+		return nil, 0, NewOpenAPIResponseError(resp.Code, resp.Errno, resp.Message, resp.Error, "115 接口调用失败")
+	}
+	files, err := openList[RemoteFile](resp.Data)
+	if err != nil {
+		return nil, 0, fmt.Errorf("115: 解析文件列表失败：%w", err)
+	}
+	return files, resp.Count, nil
+}
+
 // GetFsDetailByCid 查询文件（夹）详情。
 func (c *OpenClient) GetFsDetailByCid(ctx context.Context, fileId string) (*RemoteFileDetail, error) {
 	params := map[string]string{"file_id": fileId}
@@ -113,6 +143,49 @@ type RemoteFileDetail struct {
 	} `json:"paths"`
 }
 
+// RelativePath 计算该目录相对于根同步目录（rootCID）的相对路径。
+func (d *RemoteFileDetail) RelativePath(rootCID string) string {
+	if d == nil {
+		return ""
+	}
+	if rootCID == "" {
+		rootCID = "0"
+	}
+	if d.FileId == rootCID {
+		return ""
+	}
+	rootIdx := -1
+	for i, p := range d.Paths {
+		if p.FileId == rootCID {
+			rootIdx = i
+			break
+		}
+	}
+	var segments []string
+	start := 0
+	if rootIdx >= 0 {
+		start = rootIdx + 1
+	} else if len(d.Paths) > 0 && (d.Paths[0].FileId == "0" || d.Paths[0].FileId == "") {
+		start = 1
+	}
+	hasSelf := false
+	for i := start; i < len(d.Paths); i++ {
+		if d.Paths[i].FileId == d.FileId {
+			hasSelf = true
+		}
+		name := strings.TrimSpace(d.Paths[i].Name)
+		if name != "" {
+			segments = append(segments, name)
+		}
+	}
+	// 若 115 返回的 paths 祖先链未包含当前目录自身，则将其自身目录名 FileName 补在末尾
+	if !hasSelf && strings.TrimSpace(d.FileName) != "" && d.FileId != rootCID {
+		segments = append(segments, strings.TrimSpace(d.FileName))
+	}
+	return strings.Join(segments, "/")
+}
+
+
 // ─── 下载直链 ──────────────────────────────────────────────────────────────────
 
 type downloadURLData struct {

internal/service/cloud115/queue_executor.go

@@ -26,10 +26,15 @@ var (
 	executorOnce   sync.Once
 )
 
-// GetGlobalExecutor 获取全局队列执行器单例（默认 QPS=2, QPM=120, QPH=6000，保障 115 API 调用安全不超频）。
+// GetGlobalExecutor 获取全局队列执行器单例（默认 QPS=3, QPM=200, QPH=12000，保障 115 API 调用安全不超频）。
+//
+// 历史教训：QPS 提到 8 后，下载换直链接口（/open/ufile/downurl，WAF 重点盯防对象）
+// 瞬时突发撞上 115 风控，返回阿里云 405 阻断页（HTTP 405），导致全量同步失败。
+// 因此回调到 3——这是经过实测的安全上限：宁慢勿触发风控，一旦 405 冷却 180 秒，
+// 整体吞吐反而更低。下载实际走 CDN 不受此限速影响，瓶颈仅在换链环节。
 func GetGlobalExecutor() *QueueExecutor {
 	executorOnce.Do(func() {
-		globalExecutor = NewQueueExecutor(2, 120, 6000)
+		globalExecutor = NewQueueExecutor(3, 200, 12000)
 	})
 	return globalExecutor
 }

internal/service/danmaku_match_test.go

@@ -278,18 +278,69 @@ func TestDanmakuSameBase(t *testing.T) {
 	require.False(t, sameDanmakuBase("", "https://api.dandanplay.net"))
 }
 
-// fetchCommentWithFallback：配置源与官方同源时不重复请求；
-// 全失败时带出最后一跳错误。
-func TestDanmakuFetchCommentWithFallback(t *testing.T) {
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusInternalServerError)
-	}))
-	t.Cleanup(srv.Close)
+	// fetchCommentWithFallback：配置源与官方同源时不重复请求；
+	// 全失败时带出最后一跳错误。
+	func TestDanmakuFetchCommentWithFallback(t *testing.T) {
+		srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.WriteHeader(http.StatusInternalServerError)
+		}))
+		t.Cleanup(srv.Close)
 
-	svc := newDanmakuTestService(t)
-	ctx := context.Background()
-	raw, st, err := svc.fetchCommentWithFallback(ctx, srv.URL, srv.URL, "25484")
-	require.Error(t, err)
-	require.Empty(t, raw)
-	require.Equal(t, "auto", st)
-}
+		svc := newDanmakuTestService(t)
+		ctx := context.Background()
+		raw, st, err := svc.fetchCommentWithFallback(ctx, srv.URL, srv.URL, "25484")
+		require.Error(t, err)
+		require.Empty(t, raw)
+		require.Equal(t, "auto", st)
+	}
+
+	// 视频即便能命中 Hash 自动识别，当用户传入手动搜索关键词时应跳过 Hash 匹配，走关键词搜索。
+	func TestDanmakuFetchHashMatchSkippedOnManualKeyword(t *testing.T) {
+		videoPath, _ := writeDanmakuTestVideo(t, "测试动画.第01话.mkv")
+
+		// 官方服务同时提供 match 和 search：
+		// match 会返回 episodeId=25484（动画A）
+		// search 会根据关键词返回 episodeId=99999（动画B）
+		mux := http.NewServeMux()
+		var matchCalled bool
+		mux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+			matchCalled = true
+			w.Header().Set("Content-Type", "application/json")
+			fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":25484,"animeId":1001,"animeTitle":"自动识别动画A","episodeTitle":"第1话"}]}`)
+		})
+		mux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "application/json")
+			fmt.Fprint(w, `{"hasMore":false,"animes":[{"animeId":2002,"animeTitle":"手动搜索动画B","episodes":[{"episodeId":99999,"episodeTitle":"第1话"}]}]}`)
+		})
+		mux.HandleFunc("/api/v2/comment/25484", func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "application/xml")
+			fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">自动识别弹幕</d></i>`)
+		})
+		mux.HandleFunc("/api/v2/comment/99999", func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "application/xml")
+			fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user2">手动搜索弹幕</d></i>`)
+		})
+		official := httptest.NewServer(mux)
+		t.Cleanup(official.Close)
+		overrideDanmakuOfficialBase(t, official.URL)
+
+		svc := newDanmakuTestService(t)
+		ctx := context.Background()
+		seedDanmakuVideoMedia(t, svc, "mManual", "自动识别动画A", videoPath, 32000, 1)
+
+		// 1) 默认自动识别：命中 Hash 识别
+		resAuto, err := svc.Fetch(ctx, "mManual", "", "")
+		require.NoError(t, err)
+		require.True(t, matchCalled)
+		require.Equal(t, "hash", resAuto.MatchMode)
+		require.Equal(t, int64(25484), resAuto.EpisodeID)
+		require.Contains(t, resAuto.Raw, "自动识别弹幕")
+
+		// 2) 用户传入手动搜索关键词：跳过 Hash 识别，命中搜索结果动画B
+		resManual, err := svc.Fetch(ctx, "mManual", "手动搜索动画B", "")
+		require.NoError(t, err)
+		require.Equal(t, "search", resManual.MatchMode)
+		require.Equal(t, int64(99999), resManual.EpisodeID)
+		require.Equal(t, "手动搜索动画B", resManual.AnimeTitle)
+		require.Contains(t, resManual.Raw, "手动搜索弹幕")
+	}

internal/service/danmaku_service.go

@@ -219,8 +219,8 @@ func (s *DanmakuService) Fetch(ctx context.Context, mediaID, keyword, episodeID
 
 		target := ""
 
-		// 1) hash 识别：始终走官方 /api/v2/match。
-		if media != nil && media.Path != "" {
+		// 1) hash 识别：始终走官方 /api/v2/match（keyword 手动覆盖时跳过，直接走第 3 层）。
+		if target == "" && !manualKeyword && media != nil && media.Path != "" {
 			if hash, ok := s.mediaHash(ctx, media); ok {
 				fileSize := media.SizeBytes
 				if strings.EqualFold(filepath.Ext(media.Path), ".strm") {

internal/service/emby_compat.go

@@ -111,6 +111,7 @@ const (
 
 var (
 	embySeasonDirRE    = regexp.MustCompile(`(?i)^(season[\s._-]*\d+|s\d+|specials?|sp|ova|oad|extra|extras|第\s*[0-9一二三四五六七八九十百零两]+\s*季|特别篇|特別篇|番外|特典)$`)
+	embySeasonSuffixRE = regexp.MustCompile(`(?i)(?:[\s._-]+(?:season[\s._-]*\d+|s\d+|第\s*[0-9一二三四五六七八九十百零两]+\s*季|specials?|sp|ova|oad|extra|extras|特别篇|特別篇|番外|特典)|\s*第\s*[0-9一二三四五六七八九十百零两]+\s*季)\s*$`)
 	embyYearSuffixRE   = regexp.MustCompile(`\s*[\(（\[]\d{4}[\)）\]]\s*$`)
 	embyEpisodeTitleRE = regexp.MustCompile(`(?i)\s*[-_ ]*s\d{1,2}e\d{1,3}.*$`)
 )

internal/service/emby_series_hierarchy_test.go

@@ -334,3 +334,105 @@ func TestEmbyCloudAnimeUsesSeriesNameFromChineseSeasonFolder(t *testing.T) {
 		t.Fatalf("cloud anime should be grouped as one series named 剑来, got %#v", items)
 	}
 }
+
+func TestEmbySeriesGroupingWithPrefixedSeasonFolders(t *testing.T) {
+	svc := newTestEmbyService(t)
+	lib := model.Library{Name: "动漫", Path: `/media/动漫`, Type: "anime", Enabled: true}
+	if err := svc.repo.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatalf("create library: %v", err)
+	}
+
+	for season := 1; season <= 5; season++ {
+		for ep := 1; ep <= 3; ep++ {
+			media := model.Media{
+				Base:         model.Base{ID: fmt.Sprintf("shokugeki-s%02de%02d", season, ep)},
+				LibraryID:    lib.ID,
+				Title:        "食戟之灵",
+				OriginalName: "食戟のソーマ",
+				ScrapeStatus: "matched",
+				TMDbID:       62273,
+				BangumiID:    116461,
+				Path:         fmt.Sprintf(`/media/动漫/食戟之灵/食戟之灵 S%02d/食戟之灵 S%02dE%02d.strm`, season, season, ep),
+				SeasonNum:    season,
+				EpisodeNum:   ep,
+			}
+			if err := svc.repo.DB.Create(&media).Error; err != nil {
+				t.Fatalf("create media: %v", err)
+			}
+		}
+	}
+
+	root, err := svc.Items(t.Context(), ItemsParams{ParentID: lib.ID, Limit: 50})
+	if err != nil {
+		t.Fatalf("library items: %v", err)
+	}
+	rootItems := root["Items"].([]map[string]any)
+	if len(rootItems) != 1 {
+		t.Fatalf("expected 1 series card for 食戟之灵 across 5 seasons, got %d cards: %#v", len(rootItems), rootItems)
+	}
+	if rootItems[0]["Name"] != "食戟之灵" || rootItems[0]["Type"] != "Series" {
+		t.Fatalf("unexpected series item: %#v", rootItems[0])
+	}
+	seriesID := rootItems[0]["Id"].(string)
+
+	seasons, err := svc.Items(t.Context(), ItemsParams{ParentID: seriesID, Limit: 50})
+	if err != nil {
+		t.Fatalf("series seasons: %v", err)
+	}
+	seasonItems := seasons["Items"].([]map[string]any)
+	if len(seasonItems) != 5 {
+		t.Fatalf("expected 5 seasons, got %d: %#v", len(seasonItems), seasonItems)
+	}
+	for i, s := range seasonItems {
+		wantSeasonNum := i + 1
+		if s["Type"] != "Season" || s["IndexNumber"] != wantSeasonNum {
+			t.Errorf("season [%d] = %#v, want IndexNumber=%d", i, s, wantSeasonNum)
+		}
+	}
+
+	counts, err := svc.ItemCounts(t.Context(), "user-1")
+	if err != nil {
+		t.Fatalf("item counts: %v", err)
+	}
+	if counts["SeriesCount"] != 1 || counts["EpisodeCount"] != int64(15) {
+		t.Fatalf("counts = %#v, want 1 series and 15 episodes", counts)
+	}
+}
+
+func TestInferSeriesNameFromPath(t *testing.T) {
+	tests := []struct {
+		path string
+		want string
+	}{
+		{
+			path: `/media/动漫/食戟之灵/食戟之灵 S01/食戟之灵 S01E01.strm`,
+			want: "食戟之灵",
+		},
+		{
+			path: `/media/动漫/食戟之灵/食戟之灵 S05/食戟之灵 S05E12.strm`,
+			want: "食戟之灵",
+		},
+		{
+			path: `/media/动漫/食戟之灵/Season 02/01.mkv`,
+			want: "食戟之灵",
+		},
+		{
+			path: `/media/动漫/进击的巨人 第2季/01.mkv`,
+			want: "进击的巨人",
+		},
+		{
+			path: `cloud://openlist/国漫/剑来/第二季/04.mkv`,
+			want: "剑来",
+		},
+		{
+			path: `/media/tv/间谍过家家 (2022)/Specials/S00E01.mkv`,
+			want: "间谍过家家",
+		},
+	}
+	for _, tc := range tests {
+		got := inferSeriesNameFromPath(tc.path)
+		if got != tc.want {
+			t.Errorf("inferSeriesNameFromPath(%q) = %q, want %q", tc.path, got, tc.want)
+		}
+	}
+}

internal/service/emby_series_ids.go

@@ -31,6 +31,14 @@ func (e *EmbyService) seriesNameForMedia(m *model.Media) string {
 			return series.Title
 		}
 	}
+	if strings.EqualFold(strings.TrimSpace(m.ScrapeStatus), "matched") && strings.TrimSpace(m.Title) != "" {
+		name := strings.TrimSpace(m.Title)
+		name = embyEpisodeTitleRE.ReplaceAllString(name, "")
+		name = embyYearSuffixRE.ReplaceAllString(name, "")
+		if name != "" {
+			return name
+		}
+	}
 	if name := inferSeriesNameFromPath(m.Path); name != "" {
 		return name
 	}
@@ -53,14 +61,35 @@ func inferSeriesNameFromPath(path string) string {
 	if embySeasonDirRE.MatchString(base) {
 		dir = filepath.Dir(dir)
 		base = filepath.Base(dir)
+	} else if stripped := strings.TrimSpace(embySeasonSuffixRE.ReplaceAllString(base, "")); stripped != "" && stripped != base {
+		parentDir := filepath.Dir(dir)
+		parentBase := filepath.Base(parentDir)
+		if parentBase != "." && parentBase != string(filepath.Separator) && !isEmbyGenericContainer(parentBase) {
+			dir = parentDir
+			base = parentBase
+		} else {
+			base = stripped
+		}
 	}
 	base = strings.TrimSpace(embyYearSuffixRE.ReplaceAllString(base, ""))
-	if base == "." || base == string(filepath.Separator) {
+	if base == "." || base == string(filepath.Separator) || isEmbyGenericContainer(base) {
 		return ""
 	}
 	return base
 }
 
+func isEmbyGenericContainer(name string) bool {
+	switch strings.ToLower(strings.TrimSpace(name)) {
+	case "movie", "movies", "film", "films", "tv", "series", "show", "shows", "anime", "animation", "variety",
+		"电视剧", "剧集", "连续剧", "短剧", "国产剧", "国剧", "欧美剧", "美剧", "英剧", "日韩剧", "日剧", "韩剧", "港剧", "台剧", "港台剧",
+		"综艺", "纪录片", "儿童", "动漫", "番剧", "国漫", "日番", "韩漫", "美漫", "欧美动漫", "欧美动画", "其他动漫", "电影", "成人", "未分类",
+		"media", "downloads", "download", "videos", "video", "share", "shares":
+		return true
+	default:
+		return false
+	}
+}
+
 func stableEmbyID(prefix string, parts ...string) string {
 	h := sha256.New()
 	for _, part := range parts {

internal/service/media_library.go

@@ -43,10 +43,10 @@ func (s *MediaService) DeleteLibrary(ctx context.Context, id string) error {
 		if err := tx.Unscoped().Where("library_id = ?", id).Delete(&model.Media{}).Error; err != nil {
 			return err
 		}
-		if err := hardDeleteLibraryRoots(ctx, tx, id); err != nil {
-			return err
-		}
-		return tx.Delete(&model.Library{}, "id = ?", id).Error
+			if err := hardDeleteLibraryRoots(ctx, tx, id); err != nil {
+				return err
+			}
+			return tx.Unscoped().Delete(&model.Library{}, "id = ?", id).Error
 	})
 	if err == nil {
 		s.invalidateMediaCache(ctx)

internal/service/media_recycle.go

@@ -10,25 +10,10 @@ import (
 
 const maxRecycleBinRecords = 200
 
-// SoftDelete moves a media row to the recycle bin (gorm soft delete).
-// The on-disk file is kept; admins can purge it later.
+// SoftDelete 物理删除媒体记录（统一硬删除以降低 SQLite 存储与索引压力）。
 func (s *MediaService) SoftDelete(ctx context.Context, id string) error {
-	media, err := s.repo.Media.FindByID(ctx, id)
-	if err != nil {
-		return err
-	}
-	if media != nil && isCloudMediaPath(media.Path) {
-		err := s.repo.DB.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.Media{}).Error
-		if err == nil {
-			s.invalidateMediaCache(ctx)
-		}
-		return err
-	}
-	err = s.repo.DB.WithContext(ctx).Where("id = ?", id).Delete(&model.Media{}).Error
+	err := s.repo.DB.WithContext(ctx).Unscoped().Where("id = ?", id).Delete(&model.Media{}).Error
 	if err == nil {
-		if pruneErr := pruneRecycleBinRows(ctx, s.repo.DB, maxRecycleBinRecords); pruneErr != nil {
-			return pruneErr
-		}
 		s.invalidateMediaCache(ctx)
 	}
 	return err

internal/service/organizer_directory_versions.go

@@ -229,9 +229,9 @@ func (o *OrganizerService) replaceVersions(ctx context.Context, src string, exis
 			o.log.Warn("organize replace remove existing failed",
 				zap.String("path", e), zap.Error(err))
 		}
-		if o.repo != nil && o.repo.DB != nil {
-			_ = o.repo.DB.WithContext(ctx).Where("path = ?", e).Delete(&model.Media{}).Error
-		}
+			if o.repo != nil && o.repo.DB != nil {
+				_ = o.repo.DB.WithContext(ctx).Unscoped().Where("path = ?", e).Delete(&model.Media{}).Error
+			}
 	}
 	// Move staged file + sidecars into the final path.
 	if err := os.Rename(stage, dst); err != nil {

internal/service/organizer_reclassify_media_rows.go

@@ -97,7 +97,7 @@ func (o *OrganizerService) deleteMediaRowForPath(ctx context.Context, path strin
 	if o == nil || o.repo == nil || o.repo.DB == nil {
 		return
 	}
-	_ = o.repo.DB.WithContext(ctx).Where("path = ?", path).Delete(&model.Media{}).Error
+	_ = o.repo.DB.WithContext(ctx).Unscoped().Where("path = ?", path).Delete(&model.Media{}).Error
 }
 
 func (o *OrganizerService) mediaPathExists(ctx context.Context, path string) bool {

internal/service/playback.go

@@ -196,18 +196,18 @@ func (p *PlaybackService) AddToPlaylist(ctx context.Context, playlistID, mediaID
 	return p.repo.DB.Create(item).Error
 }
 
-// RemoveFromPlaylist removes a media item from a playlist (idempotent).
+// RemoveFromPlaylist 物理删除播放列表项（幂等）。
 func (p *PlaybackService) RemoveFromPlaylist(ctx context.Context, playlistID, mediaID string) error {
-	return p.repo.DB.
+	return p.repo.DB.WithContext(ctx).Unscoped().
 		Where("playlist_id = ? AND media_id = ?", playlistID, mediaID).
 		Delete(&model.PlaylistItem{}).Error
 }
 
-// DeletePlaylist removes a playlist and all of its items.
+// DeletePlaylist 物理删除播放列表及其全部条目。
 func (p *PlaybackService) DeletePlaylist(ctx context.Context, playlistID string) error {
-	if err := p.repo.DB.Where("playlist_id = ?", playlistID).
+	if err := p.repo.DB.WithContext(ctx).Unscoped().Where("playlist_id = ?", playlistID).
 		Delete(&model.PlaylistItem{}).Error; err != nil {
 		return err
 	}
-	return p.repo.DB.Where("id = ?", playlistID).Delete(&model.Playlist{}).Error
+	return p.repo.DB.WithContext(ctx).Unscoped().Where("id = ?", playlistID).Delete(&model.Playlist{}).Error
 }

internal/service/scanner_prune.go

@@ -11,13 +11,12 @@ import (
 	"github.com/ShukeBta/MMTL/internal/model"
 )
 
-// RemovePath deletes the media row for a path that has disappeared from disk
-// (incremental delete used by the watcher on Remove/Rename events).
+// RemovePath 物理删除磁盘上已不存在的媒体记录。
 func (s *ScannerService) RemovePath(ctx context.Context, path string) (int64, error) {
 	if _, err := os.Stat(path); err == nil {
 		return 0, nil // still exists; nothing to remove
 	}
-	res := s.repo.DB.WithContext(ctx).
+	res := s.repo.DB.WithContext(ctx).Unscoped().
 		Where("path = ?", path).
 		Delete(&model.Media{})
 	if res.Error == nil && res.RowsAffected > 0 {
@@ -55,7 +54,7 @@ func (s *ScannerService) pruneMissingMedia(ctx context.Context, libraryID string
 		}
 		stale = append(stale, row.ID)
 	}
-	return s.deleteMediaByIDs(ctx, stale, false)
+	return s.deleteMediaByIDs(ctx, stale, true)
 }
 
 func (s *ScannerService) pruneMissingMediaForRoot(ctx context.Context, libraryID, rootID, rootPath string, seen map[string]struct{}) (int64, error) {
@@ -92,7 +91,7 @@ func (s *ScannerService) pruneMissingMediaForRoot(ctx context.Context, libraryID
 		}
 		stale = append(stale, row.ID)
 	}
-	return s.deleteMediaByIDs(ctx, stale, false)
+	return s.deleteMediaByIDs(ctx, stale, true)
 }
 
 func pathBelongsToRoot(pathValue, rootPath string) bool {

internal/service/stream_normalize_test.go

@@ -22,11 +22,18 @@ func TestNormalizeCloudPlayTarget(t *testing.T) {
 	if parsed.IsAbs() || parsed.Host != "" {
 		t.Fatalf("normalized target should be relative, got %q", got)
 	}
-	if parsed.Query().Get("ref") != ref {
-		t.Fatalf("ref round-trip failed: %q", parsed.Query().Get("ref"))
-	}
+		if parsed.Query().Get("ref") != ref {
+			t.Fatalf("ref round-trip failed: %q", parsed.Query().Get("ref"))
+		}
 
-	// 非云盘播放 URL 保持原样（WebDAV/直链等）。
+		strmStale := "http://bwg.linkmy.fun:1314/api/strm/play/cloud115/video.mkv?acct=abc&pickcode=123"
+		gotStrm := normalizeCloudPlayTarget(strmStale)
+		wantStrm := "/api/strm/play/cloud115/video.mkv?acct=abc&pickcode=123"
+		if gotStrm != wantStrm {
+			t.Fatalf("normalizeCloudPlayTarget(strm) = %q, want %q", gotStrm, wantStrm)
+		}
+
+		// 非云盘播放 URL 保持原样（WebDAV/直链等）。
 	passthrough := "https://dav.example.com/media/file.mkv"
 	if got := normalizeCloudPlayTarget(passthrough); got != passthrough {
 		t.Fatalf("non-cloud target should pass through, got %q", got)

internal/service/stream_redirect.go

@@ -15,11 +15,22 @@ import (
 // /api/cloud/play 路径，由 absoluteInternalRedirect 基于「当前请求」补全
 // host，从而对历史脏数据免疫。
 func normalizeCloudPlayTarget(raw string) string {
-	typ, ref, ok := parseCloudMediaPlaybackURL(raw)
-	if !ok {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
 		return raw
 	}
-	return BuildRelativeCloudPlayURL(typ, ref)
+	if typ, ref, ok := parseCloudMediaPlaybackURL(raw); ok {
+		return BuildRelativeCloudPlayURL(typ, ref)
+	}
+	if u, err := url.Parse(raw); err == nil {
+		path := strings.ToLower(u.Path)
+		if strings.HasPrefix(path, "/api/strm/play/") || strings.HasPrefix(path, "/api/cloud/play/") || strings.HasPrefix(path, "/api/stream/") {
+			u.Scheme = ""
+			u.Host = ""
+			return u.String()
+		}
+	}
+	return raw
 }
 
 // BuildRelativeCloudPlayURL 构造相对的云盘播放 API 路径。

internal/service/strm_queue.go

@@ -13,6 +13,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 	"time"
 
 	"go.uber.org/zap"
@@ -27,7 +28,12 @@ const (
 )
 
 // downloadWorker 下载队列 worker：认领 → 解析直链 → 下载 → 落盘。
+//
+// 采用「批量认领 + 全局并发限流」：一次认领数个任务，用 StrmService 上的全局信号量
+// 限制整个进程「同时换直链+下载」的并发数（与 115 换链风控匹配，见 strmDownloadSemCap），
+// 同时让下载充分并行。换链走全局令牌桶（QPS=3）兜底，下载走 CDN 不限速。
 func (s *StrmService) downloadWorker(ctx context.Context) {
+	const claimBatch = 12 // 每次批量认领的任务数
 	for {
 		select {
 		case <-ctx.Done():
@@ -42,7 +48,7 @@ func (s *StrmService) downloadWorker(ctx context.Context) {
 			sleepContext(ctx, left)
 			continue
 		}
-		tasks, err := s.repo.StrmDownload.ClaimPendingDownload(ctx, 1)
+		tasks, err := s.repo.StrmDownload.ClaimPendingDownload(ctx, claimBatch)
 		if err != nil {
 			s.log.Warn("claim strm download task failed", zap.Error(err))
 			sleepContext(ctx, 3*time.Second)
@@ -52,9 +58,21 @@ func (s *StrmService) downloadWorker(ctx context.Context) {
 			sleepContext(ctx, 2*time.Second)
 			continue
 		}
+		// 并发处理本批任务：每个任务先获取全局下载槽位，槽位内部执行换链+下载。
+		// 信号量与令牌桶双重限速，确保任意时刻并发换链请求不超过安全阈值。
+		var wg sync.WaitGroup
 		for i := range tasks {
-			s.processDownloadTask(ctx, &tasks[i])
+			wg.Add(1)
+			go func(i int) {
+				defer wg.Done()
+				if !s.acquireDownloadSlot(ctx) {
+					return
+				}
+				defer s.releaseDownloadSlot()
+				s.processDownloadTask(ctx, &tasks[i])
+			}(i)
 		}
+		wg.Wait()
 	}
 }
 
@@ -501,6 +519,16 @@ func (s *StrmService) ClearFinishedDownloadTasks(ctx context.Context) (int64, er
 	return s.repo.StrmDownload.ClearFinished(ctx)
 }
 
+// ClearCanceledDownloadTasks 清空全部已取消的下载记录，返回删除数量。
+func (s *StrmService) ClearCanceledDownloadTasks(ctx context.Context) (int64, error) {
+	return s.repo.StrmDownload.ClearCanceled(ctx)
+}
+
+// ClearCanceledUploadTasks 清空全部已取消的上传记录，返回删除数量。
+func (s *StrmService) ClearCanceledUploadTasks(ctx context.Context) (int64, error) {
+	return s.repo.StrmUpload.ClearCanceled(ctx)
+}
+
 // RetryAllFailedDownloadTasks 批量重试所有失败下载任务，返回重新入队数量。
 func (s *StrmService) RetryAllFailedDownloadTasks(ctx context.Context) (int64, error) {
 	return s.repo.StrmDownload.RetryAllFailed(ctx)
@@ -511,6 +539,11 @@ func (s *StrmService) CancelPendingDownloadTasks(ctx context.Context) (int64, er
 	return s.repo.StrmDownload.CancelPending(ctx)
 }
 
+// CancelPendingUploadTasks 批量取消所有排队上传任务，返回取消数量。
+func (s *StrmService) CancelPendingUploadTasks(ctx context.Context) (int64, error) {
+	return s.repo.StrmUpload.CancelPending(ctx)
+}
+
 func sleepContext(ctx context.Context, d time.Duration) {
 	select {
 	case <-ctx.Done():

internal/service/strm_service.go

@@ -90,11 +90,48 @@ type StrmService struct {
 	running       map[string]context.CancelFunc // sync path id -> cancel
 	oauthSessions map[string]*strm115AuthSession
 	wafUntil      time.Time // 115 风控/限流熔断截止时间（由 mu 保护）
+
+	downloadSem chan struct{} // 全局下载并发信号量：限制整个进程同时进行「换直链+下载」的并发数
+	downloadSemOnce sync.Once
 }
 
 // strmWAFCooldown 检测到 115 风控/限流后下载队列的全局冷却时长。
 const strmWAFCooldown = 3 * time.Minute
 
+// strmDownloadSemCap 全局同时进行「换直链+下载」的并发上限。
+//
+// 115 对换直链接口（/open/ufile/downurl）风控极严：过去把全局 QPS 提到 8 或让多
+// worker 高并发换链，会瞬时撞上 WAF 返回 405 阻断页并触发 180 秒冷却，反而更慢。
+// 因此用信号量把整个进程同时换直链的并发数压到 3，与令牌桶限速共同兜底：
+// 宁可下载稍慢，也绝不触发风控。下载本身走 CDN 不限速。
+const strmDownloadSemCap = 3
+
+// ensureDownloadSem 惰性初始化全局共享的下载并发信号量。
+func (s *StrmService) ensureDownloadSem() {
+	s.downloadSemOnce.Do(func() {
+		s.downloadSem = make(chan struct{}, strmDownloadSemCap)
+	})
+}
+
+// acquireDownloadSlot 获取一个下载并发槽位（等待/取消安全）。
+func (s *StrmService) acquireDownloadSlot(ctx context.Context) bool {
+	s.ensureDownloadSem()
+	select {
+	case s.downloadSem <- struct{}{}:
+		return true
+	case <-ctx.Done():
+		return false
+	}
+}
+
+// releaseDownloadSlot 释放一个下载并发槽位。
+func (s *StrmService) releaseDownloadSlot() {
+	if s.downloadSem == nil {
+		return
+	}
+	<-s.downloadSem
+}
+
 // NewStrmService constructs the STRM service.
 func NewStrmService(cfg *config.Config, log *zap.Logger, repos *repository.Container, crypto *CryptoService) *StrmService {
 	return &StrmService{
@@ -113,6 +150,7 @@ func NewStrmService(cfg *config.Config, log *zap.Logger, repos *repository.Conta
 // Start 启动下载/上传队列 worker、定时同步巡检、115 token 刷新与队列清理。
 func (s *StrmService) Start(ctx context.Context) {
 	s.sync115RelayKey(ctx)
+	s.recoverInterruptedSyncs(ctx)
 	downloadThreads := s.strmIntSetting(ctx, StrmSettingDownloadThreads, 3)
 	if downloadThreads < 1 {
 		downloadThreads = 1
@@ -141,6 +179,21 @@ func (s *StrmService) Start(ctx context.Context) {
 		zap.Int("upload_threads", uploadThreads))
 }
 
+// recoverInterruptedSyncs 在服务启动时自愈重置因服务重启遗留的 running 状态。
+func (s *StrmService) recoverInterruptedSyncs(ctx context.Context) {
+	paths, err := s.repo.StrmSyncPath.List(ctx)
+	if err == nil {
+		for i := range paths {
+			p := &paths[i]
+			if p.LastSyncStatus == model.StrmSyncRecordRunning {
+				p.LastSyncStatus = model.StrmSyncRecordCanceled
+				p.LastSyncMessage = "服务重启，已重置同步状态"
+				_ = s.repo.StrmSyncPath.Update(ctx, p)
+			}
+		}
+	}
+}
+
 func (s *StrmService) Stop() {
 	s.stopOnce.Do(func() { close(s.stopCh) })
 }
@@ -404,6 +457,9 @@ func (s *StrmService) CreateSyncPath(ctx context.Context, p *model.StrmSyncPath)
 	if strings.TrimSpace(p.Name) == "" {
 		p.Name = "同步目录 " + time.Now().Format("01-02 15:04")
 	}
+	if p.SyncMode == "" {
+		p.SyncMode = model.StrmSyncTypeIncremental
+	}
 	if p.EnableCron && strings.TrimSpace(p.Cron) == "" {
 		return nil, errors.New("启用定时同步需要填写 cron 表达式")
 	}
@@ -430,6 +486,12 @@ func (s *StrmService) UpdateSyncPath(ctx context.Context, id string, p *model.St
 	p.LastSyncAt = existing.LastSyncAt
 	p.LastSyncStatus = existing.LastSyncStatus
 	p.LastSyncMessage = existing.LastSyncMessage
+	if p.SyncMode == "" {
+		p.SyncMode = existing.SyncMode
+		if p.SyncMode == "" {
+			p.SyncMode = model.StrmSyncTypeIncremental
+		}
+	}
 	if p.EnableCron && strings.TrimSpace(p.Cron) == "" {
 		return nil, errors.New("启用定时同步需要填写 cron 表达式")
 	}

internal/service/strm_sync.go

@@ -20,6 +20,7 @@ import (
 
 	"github.com/ShukeBta/MMTL/internal/model"
 	"github.com/ShukeBta/MMTL/internal/service/cloud"
+	"github.com/ShukeBta/MMTL/internal/service/cloud115"
 )
 
 // strmSyncState 是一次同步执行的上下文。
@@ -31,16 +32,26 @@ type strmSyncState struct {
 	provider cloud.Provider // local 提供方为 nil
 	cfg      *strmPathConfig
 	rec      *model.StrmSyncRecord
+	syncType string
 
-	mu         sync.Mutex
-	processed  int              // 已处理文件计数（用于定期落库进度）
-	seenVideo  map[string]bool  // "v:"+去掉扩展名的相对路径 → 远端存在该视频
-	seenMeta   map[string]bool  // "m:"+相对路径 → 远端存在该元数据
-	remoteMeta map[string]int64 // 远端元数据大小（上传比对用）
+	mu                  sync.Mutex
+	processed           int              // 已处理文件计数（用于定期落库进度）
+	lastProgressFlush   time.Time        // 上次进度落库时间
+	seenVideo           map[string]bool  // "v:"+去掉扩展名的相对路径 → 远端存在该视频
+	seenMeta            map[string]bool  // "m:"+相对路径 → 远端存在该元数据
+	remoteMeta          map[string]int64 // 远端元数据大小（上传比对用）
+	seenMetaTarget      map[string]cloud.FileEntry
+	seenVideoTarget     map[string]cloud.FileEntry
+	activeDownloadPaths map[string]bool // 本地已在排队/进行的下载任务路径（内存去重）
+	activeUploadPaths   map[string]bool // 本地已在排队/进行的上传任务路径（内存去重）
+	pendingDownloads    []*model.StrmDownloadTask
+	pendingUploads      []*model.StrmUploadTask
+	dirCache            sync.Map // dirID (string) -> relativePath (string)
 }
 
 // StartSync 启动一次同步（异步执行，同一目录同时只允许一个任务）。
-func (s *StrmService) StartSync(ctx context.Context, pathID string) error {
+// syncType 支持 "incremental"（默认增量）和 "full"（全量同步）。
+func (s *StrmService) StartSync(ctx context.Context, pathID string, syncType ...string) error {
 	p, err := s.repo.StrmSyncPath.FindByID(ctx, pathID)
 	if err != nil || p == nil {
 		return errNotFoundOr(err, "同步目录不存在")
@@ -64,9 +75,20 @@ func (s *StrmService) StartSync(ctx context.Context, pathID string) error {
 	s.running[pathID] = cancel
 	s.mu.Unlock()
 
+	mode := model.StrmSyncTypeIncremental
+	if len(syncType) > 0 && syncType[0] != "" {
+		mode = syncType[0]
+	} else if p.SyncMode != "" {
+		mode = p.SyncMode
+	}
+	if mode != model.StrmSyncTypeFull {
+		mode = model.StrmSyncTypeIncremental
+	}
+
 	now := time.Now()
 	rec := &model.StrmSyncRecord{
 		SyncPathID: pathID,
+		SyncType:   mode,
 		Status:     model.StrmSyncRecordRunning,
 		StartedAt:  &now,
 	}
@@ -84,15 +106,27 @@ func (s *StrmService) StartSync(ctx context.Context, pathID string) error {
 	return nil
 }
 
-// CancelSync 取消正在进行的同步。
+// CancelSync 取消正在进行的同步（若为僵尸运行状态则直接自愈重置）。
 func (s *StrmService) CancelSync(ctx context.Context, pathID string) error {
 	s.mu.Lock()
-	defer s.mu.Unlock()
 	cancel, exists := s.running[pathID]
-	if !exists {
-		return errors.New("该目录当前没有进行中的同步")
+	if exists {
+		delete(s.running, pathID)
+	}
+	s.mu.Unlock()
+
+	if exists && cancel != nil {
+		cancel()
+	}
+
+	// 无论内存中是否活跃，确保同步目录状态正确重置为已取消
+	if p, err := s.repo.StrmSyncPath.FindByID(ctx, pathID); err == nil && p != nil {
+		if p.LastSyncStatus == model.StrmSyncRecordRunning {
+			p.LastSyncStatus = model.StrmSyncRecordCanceled
+			p.LastSyncMessage = "已取消"
+			_ = s.repo.StrmSyncPath.Update(ctx, p)
+		}
 	}
-	cancel()
 	return nil
 }
 
@@ -140,14 +174,17 @@ func (s *StrmService) runSync(ctx context.Context, p *model.StrmSyncPath, rec *m
 		return
 	}
 	st := &strmSyncState{
-		s:          s,
-		ctx:        ctx,
-		p:          p,
-		cfg:        cfg,
-		rec:        rec,
-		seenVideo:  map[string]bool{},
-		seenMeta:   map[string]bool{},
-		remoteMeta: map[string]int64{},
+		s:               s,
+		ctx:             ctx,
+		p:               p,
+		cfg:             cfg,
+		rec:             rec,
+		syncType:        rec.SyncType,
+		seenVideo:       map[string]bool{},
+		seenMeta:        map[string]bool{},
+		remoteMeta:      map[string]int64{},
+		seenMetaTarget:  map[string]cloud.FileEntry{},
+		seenVideoTarget: map[string]cloud.FileEntry{},
 	}
 	if p.Provider != model.StrmProviderLocal {
 		acct, err := s.repo.StrmAccount.FindByID(ctx, p.AccountID)
@@ -191,15 +228,19 @@ func (s *StrmService) finishSync(p *model.StrmSyncPath, rec *model.StrmSyncRecor
 	p.LastSyncStatus = status
 	p.LastSyncMessage = message
 	if status != model.StrmSyncRecordFailed && message == "" {
-		p.LastSyncMessage = fmt.Sprintf("完成：新增/更新 %d 个 strm，下载 %d 个元数据，清理 %d 个文件",
-			rec.NewStrm, rec.NewMeta, rec.Pruned)
+		syncTypeLabel := "增量"
+		if rec.SyncType == model.StrmSyncTypeFull {
+			syncTypeLabel = "全量"
+		}
+		p.LastSyncMessage = fmt.Sprintf("[%s] 完成：新增/更新 %d 个 strm，跳过 %d 个，下载 %d 个元数据，清理 %d 个文件",
+			syncTypeLabel, rec.NewStrm, rec.Skipped, rec.NewMeta, rec.Pruned)
 	}
 	if err := s.repo.StrmSyncPath.Update(context.Background(), p); err != nil {
 		s.log.Warn("update strm sync path failed", zap.Error(err))
 	}
 	s.log.Info("strm sync finished",
-		zap.String("path_id", p.ID), zap.String("status", status),
-		zap.Int64("new_strm", rec.NewStrm), zap.Int64("new_meta", rec.NewMeta),
+		zap.String("path_id", p.ID), zap.String("sync_type", rec.SyncType), zap.String("status", status),
+		zap.Int64("new_strm", rec.NewStrm), zap.Int64("skipped", rec.Skipped), zap.Int64("new_meta", rec.NewMeta),
 		zap.Int64("pruned", rec.Pruned), zap.String("message", message))
 }
 
@@ -207,20 +248,43 @@ func (st *strmSyncState) run() error {
 	if err := ensureLocalDir(st.p.LocalPath); err != nil {
 		return fmt.Errorf("创建输出目录失败：%w", err)
 	}
+	if st.cfg.DownloadMeta {
+		if active, err := st.s.repo.StrmDownload.GetActiveLocalPathMap(st.ctx, st.p.ID); err == nil {
+			st.activeDownloadPaths = active
+		} else {
+			st.activeDownloadPaths = map[string]bool{}
+		}
+	}
+	if st.cfg.UploadMeta {
+		if active, err := st.s.repo.StrmUpload.GetActiveLocalPathMap(st.ctx, st.p.ID); err == nil {
+			st.activeUploadPaths = active
+		} else {
+			st.activeUploadPaths = map[string]bool{}
+		}
+	}
+
 	if st.provider != nil {
-		if err := st.walkRemote(); err != nil {
-			return err
+		if open115, ok := st.provider.(cloud.OpenAPI115Provider); ok && st.p.Provider == model.StrmProvider115 {
+			if err := st.walk115Flat(open115.OpenClient()); err != nil {
+				return err
+			}
+		} else {
+			if err := st.walkRemote(); err != nil {
+				return err
+			}
 		}
 	} else {
 		if err := st.walkLocalSource(); err != nil {
 			return err
 		}
 	}
+	st.flushPendingDownloads()
 	st.flushProgress()
 	if st.cfg.UploadMeta && st.provider != nil && st.p.Provider != model.StrmProvider115 {
 		if err := st.scanLocalMetaForUpload(); err != nil {
 			return err
 		}
+		st.flushPendingUploads()
 	}
 	if err := st.pruneLocal(); err != nil {
 		return err
@@ -239,6 +303,7 @@ const strmScanWorkers = 8
 // 多个 worker 并行执行 List（受全局 115 令牌桶限流约束），子目录动态
 // 入队；任一目录失败则取消其余 worker 并返回错误（与旧串行版语义一致）。
 func (st *strmSyncState) walkRemote() error {
+	defer st.flushPendingDownloads()
 	root := strings.TrimSpace(st.p.RemotePath)
 	if root == "" {
 		root = "/"
@@ -374,6 +439,239 @@ func (st *strmSyncState) isMetaExt(ext string) bool {
 	return false
 }
 
+// walk115Flat 使用 115 开放平台扁平化分页批量拉取机制与目录拓扑缓存（参考 QMediaSync）。
+// 极大地降低 API 请求次数并支持毫秒级/秒级增量同步。
+func (st *strmSyncState) walk115Flat(open115 *cloud115.OpenClient) error {
+	defer st.flushPendingDownloads()
+	ctx := st.ctx
+	rootCID := strings.TrimSpace(st.p.RemotePath)
+	if rootCID == "" {
+		rootCID = "0"
+	}
+
+	// 1. 目录拓扑缓存处理
+	st.dirCache.Store(rootCID, "")
+	if st.syncType == model.StrmSyncTypeFull {
+		// 全量同步：清空本路径的历史目录缓存
+		if err := st.s.repo.StrmDirCache.DeleteBySyncPathID(ctx, st.p.ID); err != nil {
+			st.s.log.Warn("delete strm dir cache failed", zap.Error(err))
+		}
+		} else {
+			// 增量同步：预加载历史目录缓存（过滤历史一对多塌陷冲突的脏数据以自愈刷新）
+			cached, err := st.s.repo.StrmDirCache.ListBySyncPathID(ctx, st.p.ID)
+			if err == nil {
+				pathCounts := make(map[string]int, len(cached))
+				for _, item := range cached {
+					pathCounts[item.Path]++
+				}
+				for _, item := range cached {
+					// 若同一个 path 对应了多个不同 dir_id，说明包含历史层级塌陷的脏数据，不预加载，让后续步骤重新向 115 获取精确路径
+					if pathCounts[item.Path] > 1 {
+						continue
+					}
+					st.dirCache.Store(item.DirID, item.Path)
+				}
+			}
+		}
+
+	// 2. 探测文件总数
+	const pageSize = 1150
+	firstBatch, totalCount, err := open115.GetFsListFlat(ctx, rootCID, 0, pageSize)
+	if err != nil {
+		return fmt.Errorf("115: 获取文件列表失败：%w", err)
+	}
+
+	st.updateSyncMessage(fmt.Sprintf("正在拉取远端文件列表 (共 %d 个文件)...", totalCount))
+
+	allFiles := make([]cloud115.RemoteFile, 0, totalCount)
+	allFiles = append(allFiles, firstBatch...)
+
+	// 3. 并发分页拉取剩余文件
+	if totalCount > int64(len(firstBatch)) {
+		totalPages := int((totalCount + pageSize - 1) / pageSize)
+		type pageTask struct {
+			offset int
+		}
+		pageTasks := make([]pageTask, 0, totalPages-1)
+		for page := 1; page < totalPages; page++ {
+			pageTasks = append(pageTasks, pageTask{offset: page * pageSize})
+		}
+
+		var (
+			filesMu  sync.Mutex
+			wg       sync.WaitGroup
+			taskCh   = make(chan pageTask, len(pageTasks))
+			errMu    sync.Mutex
+			fetchErr error
+		)
+
+		for _, t := range pageTasks {
+			taskCh <- t
+		}
+		close(taskCh)
+
+		workers := 8
+		if len(pageTasks) < workers {
+			workers = len(pageTasks)
+		}
+
+		for i := 0; i < workers; i++ {
+			wg.Add(1)
+			go func() {
+				defer wg.Done()
+				for t := range taskCh {
+					if ctx.Err() != nil {
+						return
+					}
+					files, _, err := open115.GetFsListFlat(ctx, rootCID, t.offset, pageSize)
+					if err != nil {
+						errMu.Lock()
+						if fetchErr == nil {
+							fetchErr = err
+						}
+						errMu.Unlock()
+						return
+					}
+					filesMu.Lock()
+					allFiles = append(allFiles, files...)
+					filesMu.Unlock()
+				}
+			}()
+		}
+		wg.Wait()
+		if fetchErr != nil {
+			return fmt.Errorf("115: 分页拉取失败：%w", fetchErr)
+		}
+	}
+
+	if ctx.Err() != nil {
+		return ctx.Err()
+	}
+
+	// 4. 收集所有未在缓存中的父目录 ID (file.Pid)
+	missingPids := make(map[string]struct{})
+	for _, f := range allFiles {
+		pid := f.Pid
+		if pid == "" || pid == rootCID {
+			continue
+		}
+		if _, ok := st.dirCache.Load(pid); !ok {
+			missingPids[pid] = struct{}{}
+		}
+	}
+
+	// 并发补全未知目录详情与祖先链
+	if len(missingPids) > 0 {
+		pidList := make([]string, 0, len(missingPids))
+		for pid := range missingPids {
+			pidList = append(pidList, pid)
+		}
+
+		pidCh := make(chan string, len(pidList))
+		for _, pid := range pidList {
+			pidCh <- pid
+		}
+		close(pidCh)
+
+		var (
+			pwg        sync.WaitGroup
+			dirWorkers = 8
+			doneDirs   atomic.Int64
+			totalDirs  = len(pidList)
+		)
+		if len(pidList) < dirWorkers {
+			dirWorkers = len(pidList)
+		}
+
+		st.updateSyncMessage(fmt.Sprintf("正在解析目录树 (0/%d)...", totalDirs))
+
+		for i := 0; i < dirWorkers; i++ {
+			pwg.Add(1)
+			go func() {
+				defer pwg.Done()
+				for pid := range pidCh {
+					if ctx.Err() != nil {
+						return
+					}
+					if _, loaded := st.dirCache.Load(pid); loaded {
+						if n := doneDirs.Add(1); n%20 == 0 || n == int64(totalDirs) {
+							st.updateSyncMessage(fmt.Sprintf("正在解析目录树 (%d/%d)...", n, totalDirs))
+						}
+						continue
+					}
+					detail, err := open115.GetFsDetailByCid(ctx, pid)
+					if err != nil {
+						st.s.log.Warn("115: 获取目录详情失败", zap.String("pid", pid), zap.Error(err))
+					} else if detail != nil {
+						// 解析相对路径
+						relPath := detail.RelativePath(rootCID)
+						st.dirCache.Store(pid, relPath)
+						_ = st.s.repo.StrmDirCache.Set(ctx, st.p.ID, pid, relPath)
+
+						// 顺便解析并缓存 detail.Paths 中包含的中间各层级目录
+						for _, ancestor := range detail.Paths {
+							if ancestor.FileId == "0" || ancestor.FileId == rootCID {
+								continue
+							}
+							if _, loaded := st.dirCache.Load(ancestor.FileId); !loaded {
+								subDetail := &cloud115.RemoteFileDetail{
+									FileId:   ancestor.FileId,
+									FileName: ancestor.Name,
+									Paths:    nil,
+								}
+								for _, p := range detail.Paths {
+									subDetail.Paths = append(subDetail.Paths, p)
+									if p.FileId == ancestor.FileId {
+										break
+									}
+								}
+								ancestorRel := subDetail.RelativePath(rootCID)
+								st.dirCache.Store(ancestor.FileId, ancestorRel)
+								_ = st.s.repo.StrmDirCache.Set(ctx, st.p.ID, ancestor.FileId, ancestorRel)
+							}
+						}
+					}
+					if n := doneDirs.Add(1); n%10 == 0 || n == int64(totalDirs) {
+						st.updateSyncMessage(fmt.Sprintf("正在解析目录树 (%d/%d)...", n, totalDirs))
+					}
+				}
+			}()
+		}
+		pwg.Wait()
+	}
+
+	st.updateSyncMessage(fmt.Sprintf("正在生成 STRM 与同步文件 (共 %d 个)...", len(allFiles)))
+
+	// 5. 分类处理所有文件
+	for _, f := range allFiles {
+		if ctx.Err() != nil {
+			return ctx.Err()
+		}
+		cleanName := cleanEntryName(f.FileName, false)
+		var rel string
+		if f.Pid == "" || f.Pid == rootCID {
+			rel = cleanName
+		} else {
+			if parentVal, ok := st.dirCache.Load(f.Pid); ok && parentVal.(string) != "" {
+				rel = parentVal.(string) + "/" + cleanName
+			} else {
+				rel = cleanName
+			}
+		}
+		entry := cloud.FileEntry{
+			ID:       f.FileId,
+			Name:     f.FileName,
+			IsDir:    false,
+			Size:     f.FileSize,
+			MTime:    f.Utime,
+			PickCode: f.PickCode,
+		}
+		st.processRemoteFile(entry, rel)
+	}
+
+	return nil
+}
+
 // handleVideo 生成/更新 .strm 文件。
 func (st *strmSyncState) handleVideo(entry cloud.FileEntry, rel, ext string) {
 	relSansExt := rel[:len(rel)-len(ext)]
@@ -391,6 +689,30 @@ func (st *strmSyncState) handleVideo(entry cloud.FileEntry, rel, ext string) {
 		st.s.log.Warn("strm target path out of root", zap.String("rel", targetRel), zap.Error(err))
 		return
 	}
+
+	st.mu.Lock()
+	if st.seenVideoTarget == nil {
+		st.seenVideoTarget = map[string]cloud.FileEntry{}
+	}
+	if _, exists := st.seenVideoTarget[target]; exists {
+		st.mu.Unlock()
+		st.touchProgress()
+		return
+	}
+	st.seenVideoTarget[target] = entry
+	st.mu.Unlock()
+
+	// 增量同步模式快速检查：本地 strm 文件存在、非空且修改时间与远端 mtime 一致，直接跳过无需读磁盘
+	if st.syncType == model.StrmSyncTypeIncremental && entry.MTime > 0 {
+		if info, err := os.Stat(target); err == nil && info.Size() > 0 && info.ModTime().Unix() == entry.MTime {
+			st.mu.Lock()
+			st.rec.Skipped++
+			st.mu.Unlock()
+			st.touchProgress()
+			return
+		}
+	}
+
 	content, err := st.strmContent(entry, rel, ext)
 	if err != nil {
 		// 并发 worker 下 rec.Message 无锁写会有数据竞争，这里仅记录日志；
@@ -403,6 +725,11 @@ func (st *strmSyncState) handleVideo(entry cloud.FileEntry, rel, ext string) {
 		existing = string(data)
 	}
 	if existing == content {
+		// 对齐本地 strm 修改时间为远端 mtime，便于后续秒级比对
+		if entry.MTime > 0 {
+			mTime := time.Unix(entry.MTime, 0)
+			_ = os.Chtimes(target, mTime, mTime)
+		}
 		st.mu.Lock()
 		st.rec.Skipped++
 		st.mu.Unlock()
@@ -423,6 +750,10 @@ func (st *strmSyncState) handleVideo(entry cloud.FileEntry, rel, ext string) {
 		st.s.log.Warn("rename strm failed", zap.String("file", target), zap.Error(err))
 		return
 	}
+	if entry.MTime > 0 {
+		mTime := time.Unix(entry.MTime, 0)
+		_ = os.Chtimes(target, mTime, mTime)
+	}
 	st.mu.Lock()
 	st.rec.NewStrm++
 	st.mu.Unlock()
@@ -482,6 +813,36 @@ func (st *strmSyncState) recordRemoteMeta(entry cloud.FileEntry, rel string) {
 	st.mu.Unlock()
 }
 
+func (st *strmSyncState) flushPendingDownloads() {
+	st.mu.Lock()
+	if len(st.pendingDownloads) == 0 {
+		st.mu.Unlock()
+		return
+	}
+	batch := st.pendingDownloads
+	st.pendingDownloads = nil
+	st.mu.Unlock()
+
+	if err := st.s.repo.StrmDownload.CreateInBatches(st.ctx, batch, 100); err != nil {
+		st.s.log.Warn("batch enqueue strm download tasks failed", zap.Error(err))
+	}
+}
+
+func (st *strmSyncState) flushPendingUploads() {
+	st.mu.Lock()
+	if len(st.pendingUploads) == 0 {
+		st.mu.Unlock()
+		return
+	}
+	batch := st.pendingUploads
+	st.pendingUploads = nil
+	st.mu.Unlock()
+
+	if err := st.s.repo.StrmUpload.CreateInBatches(st.ctx, batch, 100); err != nil {
+		st.s.log.Warn("batch enqueue strm upload tasks failed", zap.Error(err))
+	}
+}
+
 // handleMeta 元数据入下载队列（本地已存在且大小一致则跳过）。
 func (st *strmSyncState) handleMeta(entry cloud.FileEntry, rel, ext string) {
 	st.recordRemoteMeta(entry, rel)
@@ -490,14 +851,40 @@ func (st *strmSyncState) handleMeta(entry cloud.FileEntry, rel, ext string) {
 	if err != nil {
 		return
 	}
+
+	st.mu.Lock()
+	if st.seenMetaTarget == nil {
+		st.seenMetaTarget = map[string]cloud.FileEntry{}
+	}
+	if _, exists := st.seenMetaTarget[target]; exists {
+		// 该本地目标路径在当前批次中已被处理（存在同名/重名冲突），直接忽略重复项，避免多份不同大小的文件在本地交替覆盖导致增量死循环
+		st.mu.Unlock()
+		st.touchProgress()
+		return
+	}
+	st.seenMetaTarget[target] = entry
+	st.mu.Unlock()
+
 	if info, err := os.Stat(target); err == nil && info.Size() == entry.Size {
 		st.touchProgress()
 		return
 	}
-	if st.taskExists("download", st.p.ID, target) {
+	st.mu.Lock()
+	if st.activeDownloadPaths == nil {
+		if active, err := st.s.repo.StrmDownload.GetActiveLocalPathMap(st.ctx, st.p.ID); err == nil {
+			st.activeDownloadPaths = active
+		} else {
+			st.activeDownloadPaths = map[string]bool{}
+		}
+	}
+	if st.activeDownloadPaths[target] {
+		st.mu.Unlock()
 		st.touchProgress()
 		return
 	}
+	st.activeDownloadPaths[target] = true
+	st.mu.Unlock()
+
 	task := &model.StrmDownloadTask{
 		SyncPathID: st.p.ID,
 		AccountID:  st.p.AccountID,
@@ -516,13 +903,16 @@ func (st *strmSyncState) handleMeta(entry cloud.FileEntry, rel, ext string) {
 	if st.p.Provider != model.StrmProvider115 {
 		task.RemoteRef = entry.ID
 	}
-	if err := st.s.repo.StrmDownload.Create(st.ctx, task); err != nil {
-		st.s.log.Warn("enqueue strm download task failed", zap.Error(err))
-		return
-	}
+
 	st.mu.Lock()
+	st.pendingDownloads = append(st.pendingDownloads, task)
+	shouldFlush := len(st.pendingDownloads) >= 100
 	st.rec.NewMeta++
 	st.mu.Unlock()
+
+	if shouldFlush {
+		st.flushPendingDownloads()
+	}
 	st.touchProgress()
 }
 
@@ -576,93 +966,124 @@ func (st *strmSyncState) walkLocalSource() error {
 		if err != nil {
 			return nil
 		}
-		target, err := joinLocalRel(st.p.LocalPath, relSansExt+".strm")
-		if err != nil {
-			return nil
-		}
-		if data, err := os.ReadFile(target); err == nil && string(data) == content {
+			target, err := joinLocalRel(st.p.LocalPath, relSansExt+".strm")
+			if err != nil {
+				return nil
+			}
+			mTime := info.ModTime()
+			if st.syncType == model.StrmSyncTypeIncremental {
+				if tInfo, err := os.Stat(target); err == nil && tInfo.Size() > 0 && tInfo.ModTime().Unix() == mTime.Unix() {
+					st.mu.Lock()
+					st.rec.Skipped++
+					st.mu.Unlock()
+					st.touchProgress()
+					return nil
+				}
+			}
+			if data, err := os.ReadFile(target); err == nil && string(data) == content {
+				_ = os.Chtimes(target, mTime, mTime)
+				st.mu.Lock()
+				st.rec.Skipped++
+				st.mu.Unlock()
+				st.touchProgress()
+				return nil
+			}
+			if err := os.MkdirAll(filepath.Dir(target), 0o755); err != nil {
+				return nil
+			}
+			tmp := target + ".tmp"
+			if err := os.WriteFile(tmp, []byte(content), 0o644); err == nil {
+				_ = os.Rename(tmp, target)
+				_ = os.Chtimes(target, mTime, mTime)
+			} else {
+				_ = os.Remove(tmp)
+			}
 			st.mu.Lock()
-			st.rec.Skipped++
+			st.rec.NewStrm++
 			st.mu.Unlock()
+			st.touchProgress()
 			return nil
-		}
-		if err := os.MkdirAll(filepath.Dir(target), 0o755); err != nil {
-			return nil
-		}
-		tmp := target + ".tmp"
-		if err := os.WriteFile(tmp, []byte(content), 0o644); err == nil {
-			_ = os.Rename(tmp, target)
-		} else {
-			_ = os.Remove(tmp)
-		}
-		st.mu.Lock()
-		st.rec.NewStrm++
-		st.mu.Unlock()
-		return nil
 	})
 }
 
-// scanLocalMetaForUpload 扫描本地元数据，与远端比对后入上传队列。
-func (st *strmSyncState) scanLocalMetaForUpload() error {
-	localRoot := filepath.Clean(st.p.LocalPath)
-	return filepath.WalkDir(localRoot, func(path string, d os.DirEntry, err error) error {
-		if err != nil {
+	// scanLocalMetaForUpload 扫描本地元数据，与远端比对后入上传队列。
+	func (st *strmSyncState) scanLocalMetaForUpload() error {
+		defer st.flushPendingUploads()
+		if st.activeUploadPaths == nil {
+			if active, err := st.s.repo.StrmUpload.GetActiveLocalPathMap(st.ctx, st.p.ID); err == nil {
+				st.activeUploadPaths = active
+			} else {
+				st.activeUploadPaths = map[string]bool{}
+			}
+		}
+		localRoot := filepath.Clean(st.p.LocalPath)
+		return filepath.WalkDir(localRoot, func(path string, d os.DirEntry, err error) error {
+			if err != nil {
+				return nil
+			}
+			if path == localRoot {
+				return nil
+			}
+			select {
+			case <-st.ctx.Done():
+				return st.ctx.Err()
+			default:
+			}
+			if d.IsDir() {
+				return nil
+			}
+			rel, err := filepath.Rel(localRoot, path)
+			if err != nil {
+				return nil
+			}
+			rel = filepath.ToSlash(rel)
+			ext := strings.ToLower(filepath.Ext(rel))
+			if !st.isMetaExt(ext) {
+				return nil
+			}
+			info, err := d.Info()
+			if err != nil {
+				return nil
+			}
+			st.mu.Lock()
+			_, exists := st.remoteMeta["m:"+rel]
+			st.mu.Unlock()
+			if exists {
+				// 网盘端已存在该元数据文件，跳过上传
+				return nil
+			}
+			st.mu.Lock()
+			if st.activeUploadPaths != nil && st.activeUploadPaths[path] {
+				st.mu.Unlock()
+				return nil
+			}
+			if st.activeUploadPaths != nil {
+				st.activeUploadPaths[path] = true
+			}
+			st.mu.Unlock()
+
+			task := &model.StrmUploadTask{
+				SyncPathID: st.p.ID,
+				AccountID:  st.p.AccountID,
+				Provider:   st.p.Provider,
+				FileName:   filepath.Base(rel),
+				LocalPath:  path,
+				RemotePath: st.remoteUploadPath(rel),
+				Size:       info.Size(),
+				Status:     model.StrmTaskPending,
+			}
+			st.mu.Lock()
+			st.pendingUploads = append(st.pendingUploads, task)
+			shouldFlush := len(st.pendingUploads) >= 100
+			st.rec.Uploaded++
+			st.mu.Unlock()
+
+			if shouldFlush {
+				st.flushPendingUploads()
+			}
 			return nil
-		}
-		if path == localRoot {
-			return nil
-		}
-		select {
-		case <-st.ctx.Done():
-			return st.ctx.Err()
-		default:
-		}
-		if d.IsDir() {
-			return nil
-		}
-		rel, err := filepath.Rel(localRoot, path)
-		if err != nil {
-			return nil
-		}
-		rel = filepath.ToSlash(rel)
-		ext := strings.ToLower(filepath.Ext(rel))
-		if !st.isMetaExt(ext) {
-			return nil
-		}
-		info, err := d.Info()
-		if err != nil {
-			return nil
-		}
-		st.mu.Lock()
-		_, exists := st.remoteMeta["m:"+rel]
-		st.mu.Unlock()
-		if exists {
-			// 网盘端已存在该元数据文件，跳过上传
-			return nil
-		}
-		if st.taskExists("upload", st.p.ID, path) {
-			return nil
-		}
-		task := &model.StrmUploadTask{
-			SyncPathID: st.p.ID,
-			AccountID:  st.p.AccountID,
-			Provider:   st.p.Provider,
-			FileName:   filepath.Base(rel),
-			LocalPath:  path,
-			RemotePath: st.remoteUploadPath(rel),
-			Size:       info.Size(),
-			Status:     model.StrmTaskPending,
-		}
-		if err := st.s.repo.StrmUpload.Create(st.ctx, task); err != nil {
-			st.s.log.Warn("enqueue strm upload task failed", zap.Error(err))
-			return nil
-		}
-		st.mu.Lock()
-		st.rec.Uploaded++
-		st.mu.Unlock()
-		return nil
-	})
-}
+		})
+	}
 
 // remoteUploadPath 远端元数据目标路径 = 同步目录远端根 + 相对路径。
 func (st *strmSyncState) remoteUploadPath(rel string) string {
@@ -748,12 +1169,16 @@ func (st *strmSyncState) pruneLocal() error {
 	return nil
 }
 
-// touchProgress 每处理若干个文件落库一次进度。
+// touchProgress 进度计数并限流防抖落库（避免高频写 SQLite 导致锁竞争）。
 func (st *strmSyncState) touchProgress() {
 	st.mu.Lock()
 	st.rec.Total++
 	st.processed++
-	flush := st.processed%100 == 0
+	now := time.Now()
+	flush := st.processed%100 == 0 || (st.processed%20 == 0 && now.Sub(st.lastProgressFlush) >= 2*time.Second)
+	if flush {
+		st.lastProgressFlush = now
+	}
 	st.mu.Unlock()
 	if flush {
 		st.flushProgress()
@@ -769,6 +1194,18 @@ func (st *strmSyncState) flushProgress() {
 	}
 }
 
+// updateSyncMessage 实时更新同步阶段提示信息，让前端界面清晰了解当前进度。
+func (st *strmSyncState) updateSyncMessage(msg string) {
+	st.mu.Lock()
+	st.rec.Message = msg
+	st.p.LastSyncMessage = msg
+	rec := *st.rec
+	p := *st.p
+	st.mu.Unlock()
+	_ = st.s.repo.StrmSyncRecord.Update(st.ctx, &rec)
+	_ = st.s.repo.StrmSyncPath.Update(st.ctx, &p)
+}
+
 // ─── 定时同步巡检 ──────────────────────────────────────────────────────────────
 
 func (s *StrmService) cronLoop(ctx context.Context) {

internal/service/strm_sync_test.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 	"testing"
 	"time"
 
@@ -34,10 +35,10 @@ func testStrmService(t *testing.T) *StrmService {
 		sqlDB.SetMaxOpenConns(4)
 		t.Cleanup(func() { _ = sqlDB.Close() })
 	}
-	if err := db.AutoMigrate(&model.StrmAccount{}, &model.StrmSyncPath{}, &model.StrmSyncRecord{},
-		&model.StrmDownloadTask{}, &model.StrmUploadTask{}, &model.Setting{}); err != nil {
-		t.Fatal(err)
-	}
+		if err := db.AutoMigrate(&model.StrmAccount{}, &model.StrmSyncPath{}, &model.StrmSyncRecord{},
+			&model.StrmDownloadTask{}, &model.StrmUploadTask{}, &model.StrmDirCache{}, &model.Setting{}); err != nil {
+			t.Fatal(err)
+		}
 	repos := repository.New(db)
 	ctx := context.Background()
 	if err := repos.Setting.Set(ctx, StrmSettingBaseURL, "http://test.local:8096"); err != nil {
@@ -159,6 +160,57 @@ func TestLocalStrmSync(t *testing.T) {
 	}
 }
 
+// TestStrmFullAndIncrementalSync 测试增量同步与全量同步模式切换及记录
+func TestStrmFullAndIncrementalSync(t *testing.T) {
+	svc := testStrmService(t)
+	src := t.TempDir()
+	out := t.TempDir()
+
+	writeFile(t, filepath.Join(src, "电影", "星际穿越.mkv"), "fake-video-data")
+
+	p := syncPathRecord(t, svc, model.StrmProviderLocal, src, out, true)
+
+	// 1. 默认触发增量同步
+	if err := svc.StartSync(context.Background(), p.ID, model.StrmSyncTypeIncremental); err != nil {
+		t.Fatal(err)
+	}
+	record := waitSyncDone(t, svc, p.ID, 10*time.Second)
+	if record.Status != model.StrmSyncRecordDone {
+		t.Fatalf("sync status = %s, message = %s", record.Status, record.Message)
+	}
+	if record.SyncType != model.StrmSyncTypeIncremental {
+		t.Fatalf("expected sync_type = incremental, got %s", record.SyncType)
+	}
+	if record.NewStrm != 1 {
+		t.Fatalf("expected 1 new strm, got %d", record.NewStrm)
+	}
+
+	// 2. 再次执行增量同步，应当跳过
+	if err := svc.StartSync(context.Background(), p.ID, model.StrmSyncTypeIncremental); err != nil {
+		t.Fatal(err)
+	}
+	record = waitSyncDone(t, svc, p.ID, 10*time.Second)
+	if record.SyncType != model.StrmSyncTypeIncremental {
+		t.Fatalf("expected sync_type = incremental, got %s", record.SyncType)
+	}
+	if record.Skipped != 1 {
+		t.Fatalf("expected 1 skipped, got %d", record.Skipped)
+	}
+
+	// 3. 执行全量同步
+	if err := svc.StartSync(context.Background(), p.ID, model.StrmSyncTypeFull); err != nil {
+		t.Fatal(err)
+	}
+	record = waitSyncDone(t, svc, p.ID, 10*time.Second)
+	if record.SyncType != model.StrmSyncTypeFull {
+		t.Fatalf("expected sync_type = full, got %s", record.SyncType)
+	}
+	if record.Status != model.StrmSyncRecordDone {
+		t.Fatalf("full sync failed: status = %s, message = %s", record.Status, record.Message)
+	}
+}
+
+
 // TestStrmCronMatches cron 表达式匹配。
 func TestStrmCronMatches(t *testing.T) {
 	cases := []struct {
@@ -442,7 +494,142 @@ func TestWalkRemoteConcurrent(t *testing.T) {
 	if walkErr != nil {
 		t.Fatal(walkErr)
 	}
-	if strmCount != 5 {
-		t.Errorf("生成的 .strm 数量 = %d，期望 5", strmCount)
+		if strmCount != 5 {
+			t.Errorf("生成的 .strm 数量 = %d，期望 5", strmCount)
+		}
 	}
-}
+
+	// TestStrmBatchEnqueueAndConcurrentClaim 测试大规模批量入库及多协程并发认领无死锁
+	func TestStrmBatchEnqueueAndConcurrentClaim(t *testing.T) {
+		svc := testStrmService(t)
+		ctx := context.Background()
+
+		// 1. 批量插入 200 个下载任务
+		tasks := make([]*model.StrmDownloadTask, 0, 200)
+		for i := 0; i < 200; i++ {
+			tasks = append(tasks, &model.StrmDownloadTask{
+				SyncPathID: "test-sync-path",
+				AccountID:  "test-acct",
+				Provider:   model.StrmProvider115,
+				FileName:   filepath.Base(string(rune('a'+i%26))) + ".nfo",
+				LocalPath:  filepath.Join(t.TempDir(), string(rune('a'+i%26)), "test.nfo"),
+				Status:     model.StrmTaskPending,
+			})
+		}
+		if err := svc.repo.StrmDownload.CreateInBatches(ctx, tasks, 50); err != nil {
+			t.Fatalf("CreateInBatches failed: %v", err)
+		}
+
+		// 2. 验证 ActiveLocalPathMap
+		activeMap, err := svc.repo.StrmDownload.GetActiveLocalPathMap(ctx, "test-sync-path")
+		if err != nil {
+			t.Fatalf("GetActiveLocalPathMap failed: %v", err)
+		}
+		if len(activeMap) == 0 {
+			t.Fatal("expected active local path map to have entries")
+		}
+
+		// 3. 模拟 6 个 worker 并发 ClaimPendingDownload
+		claimedCount := 0
+		var claimMu sync.Mutex
+		var wg sync.WaitGroup
+		for w := 0; w < 6; w++ {
+			wg.Add(1)
+			go func() {
+				defer wg.Done()
+				for {
+					batch, err := svc.repo.StrmDownload.ClaimPendingDownload(ctx, 10)
+					if err != nil {
+						t.Errorf("concurrent ClaimPendingDownload failed: %v", err)
+						return
+					}
+					if len(batch) == 0 {
+						return
+					}
+					claimMu.Lock()
+					claimedCount += len(batch)
+					claimMu.Unlock()
+				}
+			}()
+		}
+		wg.Wait()
+
+			if claimedCount != 200 {
+				t.Fatalf("expected all 200 tasks claimed, got %d", claimedCount)
+			}
+		}
+
+	// TestStrmDuplicateFileConflictResolution 测试远端存在多个同名不同大小文件时，本地确定性仲裁，避免增量死循环
+	func TestStrmDuplicateFileConflictResolution(t *testing.T) {
+		svc := testStrmService(t)
+		localDir := t.TempDir()
+
+		p := &model.StrmSyncPath{
+			Base:         model.Base{ID: "dup-test-path"},
+			Provider:     model.StrmProvider115,
+			RemotePath:   "root",
+			LocalPath:    localDir,
+			DownloadMeta: true,
+		}
+
+		st := &strmSyncState{
+			s:               svc,
+			ctx:             context.Background(),
+			p:               p,
+			cfg:             &strmPathConfig{DownloadMeta: true, MetaExt: []string{"nfo"}},
+			rec:             &model.StrmSyncRecord{},
+			seenMeta:        map[string]bool{},
+			remoteMeta:      map[string]int64{},
+			seenMetaTarget:  map[string]cloud.FileEntry{},
+			seenVideoTarget: map[string]cloud.FileEntry{},
+		}
+
+		// 模拟远端同目录下存在两个同名不同大小的 nfo 文件 (115 历史重复上传)
+		// entry1: 较早文件 (MTime: 1000, Size: 100)
+		entry1 := cloud.FileEntry{ID: "f1", Name: "test.nfo", Size: 100, MTime: 1000, PickCode: "p1"}
+		// entry2: 较新文件 (MTime: 2000, Size: 200)
+		entry2 := cloud.FileEntry{ID: "f2", Name: "test.nfo", Size: 200, MTime: 2000, PickCode: "p2"}
+
+		// 第一次全量处理：两者都在列表中
+		st.handleMeta(entry1, "test.nfo", ".nfo")
+		st.handleMeta(entry2, "test.nfo", ".nfo")
+		st.flushPendingDownloads()
+
+		// 验证仲裁结果：最终只产生 1 个下载任务，且使用的是首个匹配项 (Size 100/p1)
+		tasks, _, err := svc.repo.StrmDownload.List(context.Background(), "", 1, 10)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if len(tasks) != 1 {
+			t.Fatalf("expected 1 download task after conflict resolution, got %d", len(tasks))
+		}
+		if tasks[0].Size != 100 || tasks[0].RemoteRef != "p1" {
+			t.Fatalf("expected task with size 100/p1, got size=%d ref=%s", tasks[0].Size, tasks[0].RemoteRef)
+		}
+
+		// 模拟该任务下载落盘完成
+		writeFile(t, filepath.Join(localDir, "test.nfo"), strings.Repeat("x", 100))
+
+		// 第二次增量同步：两者再次依次扫描
+		st2 := &strmSyncState{
+			s:               svc,
+			ctx:             context.Background(),
+			p:               p,
+			cfg:             &strmPathConfig{DownloadMeta: true, MetaExt: []string{"nfo"}},
+			rec:             &model.StrmSyncRecord{},
+			seenMeta:        map[string]bool{},
+			remoteMeta:      map[string]int64{},
+			seenMetaTarget:  map[string]cloud.FileEntry{},
+			seenVideoTarget: map[string]cloud.FileEntry{},
+		}
+		st2.handleMeta(entry1, "test.nfo", ".nfo")
+		st2.handleMeta(entry2, "test.nfo", ".nfo")
+		st2.flushPendingDownloads()
+
+		// 验证：不会新增任何下载任务，NewMeta 为 0，增量跳过
+		if st2.rec.NewMeta != 0 {
+			t.Fatalf("expected 0 new meta on incremental sync, got %d", st2.rec.NewMeta)
+		}
+	}
+
+

internal/service/visibility.go

@@ -123,12 +123,20 @@ func LibraryVisibleForUser(ctx context.Context, repo *repository.Container, lib
 		return false
 	}
 	if repo != nil && repo.DB != nil {
-		var count int64
+		var totalCount int64
 		_ = repo.DB.WithContext(ctx).Model(&model.Media{}).
-			Where("library_id = ? AND nsfw = ?", lib.ID, true).
-			Count(&count).Error
-		if count > 0 {
-			return false
+			Where("library_id = ?", lib.ID).
+			Count(&totalCount).Error
+		if totalCount > 0 {
+			var nsfwCount int64
+			_ = repo.DB.WithContext(ctx).Model(&model.Media{}).
+				Where("library_id = ? AND nsfw = ?", lib.ID, true).
+				Count(&nsfwCount).Error
+			// 仅当整库媒体全部为成人内容（纯成人库）时才隐藏整库；
+			// 含有普通内容的混合媒体库保持库本身可见，具体 NSFW 条目在媒体列表内过滤。
+			if nsfwCount == totalCount {
+				return false
+			}
 		}
 	}
 	return true

web/src/api/strm.ts

@@ -107,7 +107,8 @@ export const strmAPI = {
 
   deletePath: (id: string) => api.delete(`/admin/strm/paths/${id}`).then((r) => r.data),
 
-  startSync: (id: string) => api.post(`/admin/strm/paths/${id}/sync`).then((r) => r.data),
+  startSync: (id: string, mode: 'incremental' | 'full' = 'incremental') =>
+    api.post(`/admin/strm/paths/${id}/sync`, null, { params: { mode } }).then((r) => r.data),
 
   cancelSync: (id: string) => api.post(`/admin/strm/paths/${id}/cancel`).then((r) => r.data),
 
@@ -142,6 +143,9 @@ export const strmAPI = {
   clearFinishedDownloads: () =>
     api.post<{ deleted: number }>('/admin/strm/downloads/clear-finished').then((r) => r.data),
 
+  clearCanceledDownloads: () =>
+    api.post<{ deleted: number }>('/admin/strm/downloads/clear-canceled').then((r) => r.data),
+
   retryFailedDownloads: () =>
     api.post<{ retried: number }>('/admin/strm/downloads/retry-failed').then((r) => r.data),
 
@@ -158,6 +162,12 @@ export const strmAPI = {
   cancelUpload: (id: string) =>
     api.post(`/admin/strm/uploads/${id}/cancel`).then((r) => r.data),
 
+  cancelPendingUploads: () =>
+    api.post<{ canceled: number }>('/admin/strm/uploads/cancel-pending').then((r) => r.data),
+
+  clearCanceledUploads: () =>
+    api.post<{ deleted: number }>('/admin/strm/uploads/clear-canceled').then((r) => r.data),
+
   retryUpload: (id: string) =>
     api.post(`/admin/strm/uploads/${id}/retry`).then((r) => r.data),
 }

web/src/pages/LibrariesPage.tsx

@@ -1,7 +1,8 @@
-import { useEffect, useMemo, useState } from 'react'
+import { useCallback, useEffect, useMemo, useState } from 'react'
 
 import { libraryAPI } from '../api/library'
 import { toolsAPI } from '../api/tools'
+import { openManageLibrariesDialog } from '../components/manageLibrariesDialog'
 import {
   LibrariesContent,
   LibrariesEmptyState,
@@ -16,6 +17,32 @@ export function LibrariesPage() {
   const [repairEpisodeArtwork, setRepairEpisodeArtwork] = useState(false)
   const [repairMsg, setRepairMsg] = useState('')
 
+  const loadLibraries = useCallback(async () => {
+    setLoading(true)
+    try {
+      const libs = await libraryAPI.list()
+      const rows = await Promise.all(libs.map(async (library) => {
+        try {
+          if (isSeriesLibraryType(library.type)) {
+            const [seriesPage, mediaPage] = await Promise.all([
+              libraryAPI.listSeries(library.id, 1, 10),
+              libraryAPI.listMedia(library.id, 1, 1, { groupVersions: false }),
+            ])
+            return { library, items: [], total: mediaPage.total, cards: seriesPage.items ?? [] } satisfies LibraryPreview
+          }
+          const page = await libraryAPI.listMedia(library.id, 1, 160, { groupVersions: false })
+          const cards = latestLibraryCards(page.items)
+          return { library, items: page.items, total: page.total, cards } satisfies LibraryPreview
+        } catch {
+          return { library, items: [], total: 0, cards: [] } satisfies LibraryPreview
+        }
+      }))
+      setPreviews(rows)
+    } finally {
+      setLoading(false)
+    }
+  }, [])
+
   async function handleRepairRescrape() {
     if (repairing) return
     setRepairing(true)
@@ -30,36 +57,14 @@ export function LibrariesPage() {
     }
   }
 
+  const handleManageLibraries = async () => {
+    await openManageLibrariesDialog()
+    await loadLibraries()
+  }
+
   useEffect(() => {
-    let cancelled = false
-    async function load() {
-      setLoading(true)
-      try {
-        const libs = await libraryAPI.list()
-        const rows = await Promise.all(libs.map(async (library) => {
-          try {
-            if (isSeriesLibraryType(library.type)) {
-              const [seriesPage, mediaPage] = await Promise.all([
-                libraryAPI.listSeries(library.id, 1, 10),
-                libraryAPI.listMedia(library.id, 1, 1, { groupVersions: false }),
-              ])
-              return { library, items: [], total: mediaPage.total, cards: seriesPage.items ?? [] } satisfies LibraryPreview
-            }
-            const page = await libraryAPI.listMedia(library.id, 1, 160, { groupVersions: false })
-            const cards = latestLibraryCards(page.items)
-            return { library, items: page.items, total: page.total, cards } satisfies LibraryPreview
-          } catch {
-            return { library, items: [], total: 0, cards: [] } satisfies LibraryPreview
-          }
-        }))
-        if (!cancelled) setPreviews(rows)
-      } finally {
-        if (!cancelled) setLoading(false)
-      }
-    }
-    load()
-    return () => { cancelled = true }
-  }, [])
+    loadLibraries().catch(() => undefined)
+  }, [loadLibraries])
 
   const total = useMemo(() => previews.reduce((sum, preview) => sum + preview.total, 0), [previews])
 
@@ -77,6 +82,7 @@ export function LibrariesPage() {
         repairing={repairing}
         onRepairEpisodeArtworkChange={setRepairEpisodeArtwork}
         onRepairRescrape={handleRepairRescrape}
+        onManageLibraries={handleManageLibraries}
       />
 
       {previews.length === 0 ? (

web/src/pages/LibrariesPageSections.tsx

@@ -6,7 +6,6 @@ import { ArrowRight, Film, FolderOpen, Library as LibraryIcon, Music, PlayCircle
 import { imageURL } from '../api/client'
 import { EpisodeArtworkToggle } from '../components/EpisodeArtworkToggle'
 import { MediaCard } from '../components/MediaCard'
-import { openManageLibrariesDialog } from '../components/manageLibrariesDialog'
 import { seriesCardLink } from '../utils/groupSeries'
 import { libraryDisplayPath } from './libraryDisplayModel'
 import { libraryArtworkItems, type LibraryPreview } from './librariesPageModel'
@@ -37,6 +36,7 @@ export function LibrariesHeader({
   repairing,
   onRepairEpisodeArtworkChange,
   onRepairRescrape,
+  onManageLibraries,
 }: {
   previewCount: number
   total: number
@@ -45,6 +45,7 @@ export function LibrariesHeader({
   repairing: boolean
   onRepairEpisodeArtworkChange: (value: boolean) => void
   onRepairRescrape: () => void
+  onManageLibraries: () => void
 }) {
   return (
     <div className="flex flex-wrap items-end justify-between gap-4">
@@ -72,7 +73,7 @@ export function LibrariesHeader({
           <RefreshCw size={14} className={repairing ? 'animate-spin' : ''} />
           {repairing ? '正在启动…' : '全库修复+重刮'}
         </button>
-        <button type="button" onClick={() => openManageLibrariesDialog()} className="btn-outline">
+        <button type="button" onClick={onManageLibraries} className="btn-outline">
           管理媒体库
         </button>
       </div>

web/src/pages/PlayerVideoStage.tsx

@@ -115,12 +115,6 @@ export function PlayerVideoStage({
       return
     }
 
-    const timers = new Set<ReturnType<typeof setTimeout>>()
-    const delay = (fn: () => void, ms: number) => {
-      const id = setTimeout(fn, ms)
-      timers.add(id)
-    }
-
     const updateCue = () => {
       const trackEls = Array.from(video.querySelectorAll('track'))
       const selectedEl = trackEls[subtitleIndex]
@@ -130,16 +124,24 @@ export function PlayerVideoStage({
         return
       }
 
+      // 优先从浏览器 activeCues 中取当前文本；若浏览器在 hidden 模式下延迟触发 cuechange，
+      // 则从 tt.cues 中根据 video.currentTime 实时匹配当前字幕，确保初次加载无感立即可见。
+      const texts: string[] = []
       if (tt.activeCues && tt.activeCues.length > 0) {
-        const texts: string[] = []
         for (let i = 0; i < tt.activeCues.length; i++) {
           const cue = tt.activeCues[i] as VTTCue
           if (cue && cue.text) texts.push(cue.text)
         }
-        setActiveCueText(texts.join('\n'))
-      } else {
-        setActiveCueText('')
+      } else if (tt.cues && tt.cues.length > 0) {
+        const cur = video.currentTime
+        for (let i = 0; i < tt.cues.length; i++) {
+          const cue = tt.cues[i] as VTTCue
+          if (cue && cur >= cue.startTime && cur <= cue.endTime && cue.text) {
+            texts.push(cue.text)
+          }
+        }
       }
+      setActiveCueText(texts.join('\n'))
     }
 
     const apply = () => {
@@ -162,18 +164,8 @@ export function PlayerVideoStage({
         tt.addEventListener('cuechange', updateCue)
       }
 
-      // 竞态兜底重载检测
-      delay(() => {
-        const curTt = selected.track
-        if (curTt && curTt.mode === 'hidden' && (!curTt.cues || curTt.cues.length === 0)) {
-          const src = selected.getAttribute('src')
-          if (src) {
-            selected.setAttribute('src', '')
-            selected.setAttribute('src', src)
-            curTt.mode = 'hidden'
-          }
-        }
-      }, 1200)
+      selected.removeEventListener('load', updateCue)
+      selected.addEventListener('load', updateCue)
 
       updateCue()
     }
@@ -183,20 +175,24 @@ export function PlayerVideoStage({
     video.addEventListener('timeupdate', updateCue)
     video.addEventListener('seeking', updateCue)
     video.addEventListener('seeked', updateCue)
+    video.addEventListener('playing', updateCue)
 
     return () => {
       video.removeEventListener('loadedmetadata', apply)
       video.removeEventListener('timeupdate', updateCue)
       video.removeEventListener('seeking', updateCue)
       video.removeEventListener('seeked', updateCue)
-      timers.forEach(clearTimeout)
+      video.removeEventListener('playing', updateCue)
       const trackEls = Array.from(video.querySelectorAll('track'))
       const selected = trackEls[subtitleIndex]
-      if (selected?.track) {
-        selected.track.removeEventListener('cuechange', updateCue)
+      if (selected) {
+        selected.removeEventListener('load', updateCue)
+        if (selected.track) {
+          selected.track.removeEventListener('cuechange', updateCue)
+        }
       }
     }
-  }, [subtitleIndex, subs, videoRef])
+  }, [subtitleIndex, subs, videoRef, media])
 
   // 根据视频画面宽高比与舞台宽高比，确定视频在哪个轴向撑满 100%
   const isWiderThanStage =
@@ -238,13 +234,14 @@ export function PlayerVideoStage({
               className="h-full w-full object-contain bg-black"
               onError={onVideoError}
             >
-              {subs.map((track) => (
+              {subs.map((track, index) => (
                 <track
                   key={track.path}
                   kind="subtitles"
                   src={subtitlesAPI.url(media.id, track.path)}
                   srcLang={track.lang}
                   label={track.label || track.lang}
+                  default={index === subtitleIndex}
                 />
               ))}
             </video>

web/src/pages/StrmDialogs.tsx

@@ -674,6 +674,7 @@ export function StrmSyncPathDialog({
     delete_dir: existing?.delete_dir ?? false,
     cron: existing?.cron ?? '',
     enable_cron: existing?.enable_cron ?? false,
+    sync_mode: existing?.sync_mode ?? 'incremental',
     enabled: existing?.enabled ?? true,
   }))
   const [saving, setSaving] = useState(false)
@@ -831,7 +832,7 @@ export function StrmSyncPathDialog({
                 <input className={inputCls} value={form.exclude_name ?? ''} placeholder="sample,trailer" onChange={(e) => set('exclude_name', e.target.value)} />
               </Field>
             </div>
-            <div className="grid gap-3 md:grid-cols-2">
+            <div className="grid gap-3 md:grid-cols-3">
               <Field label="STRM 链接 path 参数">
                 <select className={inputCls} value={form.add_path ?? 1} onChange={(e) => set('add_path', Number(e.target.value))}>
                   <option value={1}>完整远端路径</option>
@@ -839,7 +840,13 @@ export function StrmSyncPathDialog({
                   <option value={3}>不带 path</option>
                 </select>
               </Field>
-              <Field label="定时同步 Cron" hint="5 段表达式，如 0 */6 * * *（每 6 小时）">
+              <Field label="默认同步模式" hint="定时触发或快速同步时的策略">
+                <select className={inputCls} value={form.sync_mode ?? 'incremental'} onChange={(e) => set('sync_mode', e.target.value as 'incremental' | 'full')}>
+                  <option value="incremental">增量同步（快速）</option>
+                  <option value="full">全量同步（全量校验）</option>
+                </select>
+              </Field>
+              <Field label="定时同步 Cron" hint="5 段表达式，如 0 */6 * * *">
                 <input className={inputCls} value={form.cron ?? ''} placeholder="0 */6 * * *" onChange={(e) => set('cron', e.target.value)} />
               </Field>
             </div>

web/src/pages/StrmManagePage.tsx

@@ -96,11 +96,11 @@ export function StrmManagePage() {
     return () => clearInterval(timer)
   }, [paths, refresh])
 
-  const startSync = async (path: StrmSyncPath) => {
+  const startSync = async (path: StrmSyncPath, mode: 'incremental' | 'full' = 'incremental') => {
     setActingPath(path.id)
     try {
-      await strmAPI.startSync(path.id)
-      toast.success(`已开始同步「${path.name}」`)
+      await strmAPI.startSync(path.id, mode)
+      toast.success(`已开始${mode === 'full' ? '全量' : '增量'}同步「${path.name}」`)
       await refresh()
     } catch (err) {
       toast.error(apiErrorMessage(err))
@@ -344,7 +344,7 @@ function SyncPathSection({
   onAdd: () => void
   onEdit: (path: StrmSyncPath) => void
   onDelete: (path: StrmSyncPath) => void
-  onStart: (path: StrmSyncPath) => void
+  onStart: (path: StrmSyncPath, mode?: 'incremental' | 'full') => void
   onCancel: (path: StrmSyncPath) => void
 }) {
   return (
@@ -401,15 +401,28 @@ function SyncPathSection({
                         取消
                       </button>
                     ) : (
-                      <button
-                        type="button"
-                        disabled={actingPath === path.id || !path.enabled}
-                        onClick={() => onStart(path)}
-                        className={`${iconButtonCls} disabled:opacity-40`}
-                      >
-                        {actingPath === path.id ? <Loader2 size={14} className="animate-spin" /> : <Play size={14} />}
-                        立即同步
-                      </button>
+                      <>
+                        <button
+                          type="button"
+                          disabled={actingPath === path.id || !path.enabled}
+                          onClick={() => onStart(path, 'incremental')}
+                          className={`${iconButtonCls} text-brand-600 font-medium disabled:opacity-40`}
+                          title="增量同步：基于目录缓存快速同步新增与更新文件"
+                        >
+                          {actingPath === path.id ? <Loader2 size={14} className="animate-spin" /> : <Play size={14} />}
+                          增量同步
+                        </button>
+                        <button
+                          type="button"
+                          disabled={actingPath === path.id || !path.enabled}
+                          onClick={() => onStart(path, 'full')}
+                          className={`${iconButtonCls} text-sand-600 disabled:opacity-40`}
+                          title="全量同步：重置目录缓存并全量比对所有文件"
+                        >
+                          <RefreshCw size={14} />
+                          全量同步
+                        </button>
+                      </>
                     )}
                     <button type="button" onClick={() => onEdit(path)} className={`${iconButtonCls}`}>
                       <Pencil size={14} />
@@ -456,9 +469,11 @@ function RecordSection({ records }: { records: StrmSyncRecord[] }) {
             <thead className="border-b border-gray-200 text-xs uppercase tracking-wider text-sand-500">
               <tr>
                 <th className="px-3 py-2">时间</th>
+                <th className="px-3 py-2">类型</th>
                 <th className="px-3 py-2">状态</th>
                 <th className="px-3 py-2 text-right">扫描文件</th>
-                <th className="px-3 py-2 text-right">新增 strm</th>
+                <th className="px-3 py-2 text-right">新增/更新</th>
+                <th className="px-3 py-2 text-right">跳过</th>
                 <th className="px-3 py-2 text-right">下载元数据</th>
                 <th className="px-3 py-2 text-right">清理</th>
                 <th className="px-3 py-2">说明</th>
@@ -467,11 +482,17 @@ function RecordSection({ records }: { records: StrmSyncRecord[] }) {
             <tbody>
               {records.map((record) => {
                 const meta = RECORD_STATUS_META[record.status] ?? RECORD_STATUS_META.pending
+                const isFull = record.sync_type === 'full'
                 return (
                   <tr key={record.id} className="border-t border-gray-100">
                     <td className="whitespace-nowrap px-3 py-2 text-xs text-ink-50">
                       {formatTime(record.started_at ?? record.created_at)}
                     </td>
+                    <td className="px-3 py-2">
+                      <span className={`rounded-full px-2 py-0.5 text-[11px] font-medium ${isFull ? 'bg-amber-50 text-amber-600 border border-amber-200' : 'bg-brand-50 text-brand-600 border border-brand-200'}`}>
+                        {isFull ? '全量' : '增量'}
+                      </span>
+                    </td>
                     <td className="px-3 py-2">
                       <span className={'rounded-full px-2 py-0.5 text-[11px] font-semibold ' + meta.cls}>
                         {meta.label}
@@ -479,6 +500,7 @@ function RecordSection({ records }: { records: StrmSyncRecord[] }) {
                     </td>
                     <td className="px-3 py-2 text-right">{record.total}</td>
                     <td className="px-3 py-2 text-right text-brand-500">{record.new_strm}</td>
+                    <td className="px-3 py-2 text-right text-gray-500">{record.skipped}</td>
                     <td className="px-3 py-2 text-right">{record.new_meta}</td>
                     <td className="px-3 py-2 text-right">{record.pruned}</td>
                     <td className="max-w-[260px] truncate px-3 py-2 text-xs text-sand-500">{record.message}</td>

web/src/pages/StrmQueuePage.tsx

@@ -96,7 +96,7 @@ function StrmQueuePanel({ kind }: { kind: 'download' | 'upload' }) {
     }
   }
 
-  const batchBtn = (title: string, cls: string, onClick: () => void) => (
+  const batchBtn = (title: string, icon: 'trash' | 'ban' | 'refresh', cls: string, onClick: () => void) => (
     <button
       type="button"
       disabled={batchBusy}
@@ -105,33 +105,58 @@ function StrmQueuePanel({ kind }: { kind: 'download' | 'upload' }) {
         'ml-auto inline-flex items-center gap-1 rounded-lg border px-2 py-1 text-xs font-semibold transition disabled:opacity-50 ' + cls
       }
     >
-      <Trash2 size={12} />
+      {icon === 'trash' && <Trash2 size={12} />}
+      {icon === 'ban' && <Ban size={12} />}
+      {icon === 'refresh' && <RefreshCw size={12} />}
       {title}
     </button>
   )
 
+  const cancelAllPendingAction = () => {
+    const action = isDownload
+      ? () => strmAPI.cancelPendingDownloads()
+      : () => strmAPI.cancelPendingUploads()
+    return runBatch(action, `确定取消所有排队中及进行中的${isDownload ? '下载' : '上传'}任务？`)
+  }
+
   const batchActionByFilter = () => {
+    if (filter === 'pending' || filter === 'running')
+      return batchBtn(
+        '全部取消',
+        'ban',
+        'border-amber-200 text-amber-600 hover:bg-amber-50',
+        cancelAllPendingAction,
+      )
+    if (filter === 'canceled')
+      return batchBtn(
+        '清空已取消记录',
+        'trash',
+        'border-gray-200 text-rose-500 hover:bg-rose-50',
+        () =>
+          runBatch(
+            isDownload
+              ? () => strmAPI.clearCanceledDownloads()
+              : () => strmAPI.clearCanceledUploads(),
+            `确定清空所有已取消的${isDownload ? '下载' : '上传'}记录？`,
+          ),
+      )
     if (!isDownload) return null
     if (filter === 'done')
       return batchBtn(
         '清空成功记录',
+        'trash',
         'border-gray-200 text-rose-500 hover:bg-rose-50',
         () => runBatch(() => strmAPI.clearDoneDownloads(), '确定清空所有已完成下载记录？'),
       )
     if (filter === 'failed')
-      return batchBtn('批量重试', 'border-gray-200 text-brand-500 hover:bg-brand-50', () =>
+      return batchBtn('批量重试', 'refresh', 'border-gray-200 text-brand-500 hover:bg-brand-50', () =>
         runBatch(() => strmAPI.retryFailedDownloads(), '确定重新入队所有失败下载任务？'),
       )
-    if (filter === 'pending')
-      return batchBtn(
-        '批量取消',
-        'border-gray-200 text-amber-600 hover:bg-amber-50',
-        () => runBatch(() => strmAPI.cancelPendingDownloads(), '确定取消所有排队中的下载任务？'),
-      )
     return null
   }
 
   const counts = snapshot?.counts
+  const activeTaskCount = (counts?.pending ?? 0) + (counts?.running ?? 0)
   const tasks = snapshot?.tasks.filter((t) => filter === 'all' || t.status === filter) ?? []
   const isDownload = kind === 'download'
   const Icon = isDownload ? Download : Upload
@@ -152,23 +177,36 @@ function StrmQueuePanel({ kind }: { kind: 'download' | 'upload' }) {
               : 'STRM 元数据上传情况（本地 → 远端网盘，3 秒自动刷新）'}
           </p>
         </div>
-        {isDownload && (
-          <button
-            type="button"
-            disabled={batchBusy}
-            onClick={() =>
-              runBatch(() => strmAPI.clearFinishedDownloads(), '确定清空所有失败和成功的下载记录？')
-            }
-            className="inline-flex items-center gap-1.5 rounded-xl border border-rose-200 px-3 py-2 text-sm font-semibold text-rose-500 transition hover:bg-rose-50 disabled:opacity-50"
-          >
-            <Trash2 size={14} />
-            清空失败与完成记录
+        <div className="ml-auto flex items-center gap-2">
+          {activeTaskCount > 0 && (
+            <button
+              type="button"
+              disabled={batchBusy}
+              onClick={cancelAllPendingAction}
+              className="inline-flex items-center gap-1.5 rounded-xl border border-amber-300 bg-amber-500/10 px-3 py-2 text-sm font-semibold text-amber-600 transition hover:bg-amber-500/20 disabled:opacity-50"
+            >
+              <Ban size={14} />
+              全部取消 ({activeTaskCount})
+            </button>
+          )}
+          {isDownload && (
+            <button
+              type="button"
+              disabled={batchBusy}
+              onClick={() =>
+                runBatch(() => strmAPI.clearFinishedDownloads(), '确定清空所有失败和成功的下载记录？')
+              }
+              className="inline-flex items-center gap-1.5 rounded-xl border border-rose-200 px-3 py-2 text-sm font-semibold text-rose-500 transition hover:bg-rose-50 disabled:opacity-50"
+            >
+              <Trash2 size={14} />
+              清空完成与失败
+            </button>
+          )}
+          <button type="button" onClick={refresh} className="inline-flex items-center gap-1.5 rounded-xl border border-gray-200 px-3 py-2 text-sm font-semibold text-ink-100 hover:bg-gray-50">
+            <RefreshCw size={14} />
+            刷新
           </button>
-        )}
-        <button type="button" onClick={refresh} className="ml-auto inline-flex items-center gap-1.5 rounded-xl border border-gray-200 px-3 py-2 text-sm font-semibold text-ink-100 hover:bg-gray-50">
-          <RefreshCw size={14} />
-          刷新
-        </button>
+        </div>
       </header>
 
       <div className="flex flex-wrap items-center gap-2">

web/src/types/strm.ts

@@ -49,6 +49,7 @@ export interface StrmSyncPath {
   delete_dir: boolean
   cron: string
   enable_cron: boolean
+  sync_mode?: 'incremental' | 'full'
   enabled: boolean
   created_at: string
   last_sync_at?: string | null
@@ -75,12 +76,14 @@ export interface StrmSyncPathInput {
   delete_dir?: boolean
   cron?: string
   enable_cron?: boolean
+  sync_mode?: 'incremental' | 'full'
   enabled?: boolean
 }
 
 export interface StrmSyncRecord {
   id: string
   sync_path_id: string
+  sync_type?: 'incremental' | 'full'
   status: 'pending' | 'running' | 'done' | 'failed' | 'canceled'
   total: number
   new_strm: number