bug处理

优化

internal/handler/cloud115_playback.go

@@ -0,0 +1,148 @@
+package handler
+
+import (
+	"errors"
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/truewhile/MeBox/internal/service"
+)
+
+func mediaPlaybackInfoHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc == nil || svc.Cloud115 == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "cloud115 playback unavailable"})
+			return
+		}
+		m, err := svc.Media.GetMedia(c.Request.Context(), c.Param("id"))
+		if err != nil || m == nil || !mediaVisibleForRequest(c, svc, m) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+			return
+		}
+		if !enforceScopedPlaybackToken(c, m.ID) {
+			return
+		}
+		quality, _ := strconv.Atoi(c.Query("quality"))
+		info, err := svc.Cloud115.PlaybackInfo(c.Request.Context(), m.ID, quality)
+		if err != nil {
+			if errors.Is(err, service.ErrMediaNotFound) {
+				c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+				return
+			}
+			c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, info)
+	}
+}
+
+func mediaTranscodeHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc == nil || svc.Cloud115 == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "cloud115 playback unavailable"})
+			return
+		}
+		m, err := svc.Media.GetMedia(c.Request.Context(), c.Param("id"))
+		if err != nil || m == nil || !mediaVisibleForRequest(c, svc, m) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+			return
+		}
+		if !enforceScopedPlaybackToken(c, m.ID) {
+			return
+		}
+		var req struct {
+			Definition int `json:"definition"`
+		}
+		_ = c.ShouldBindJSON(&req)
+		info, err := svc.Cloud115.StartTranscode(c.Request.Context(), m.ID, req.Definition)
+		if err != nil {
+			c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, info)
+	}
+}
+
+func cloud115HLSMasterHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc == nil || svc.Cloud115 == nil || svc.Cloud115.HLSProxy() == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "cloud115 playback unavailable"})
+			return
+		}
+		m, err := svc.Media.GetMedia(c.Request.Context(), c.Param("id"))
+		if err != nil || m == nil || !mediaVisibleForRequest(c, svc, m) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+			return
+		}
+		if !enforceScopedPlaybackToken(c, m.ID) {
+			return
+		}
+		definition, _ := strconv.Atoi(c.Query("definition"))
+		err = svc.Cloud115.HLSProxy().ServeMaster(c.Request.Context(), c.Writer, c.Request, m.ID, definition)
+		if err == nil {
+			return
+		}
+		if c.Writer.Written() {
+			return
+		}
+		if errors.Is(err, service.ErrCloud115TranscodePending) {
+			retryAfter := 5
+			message := "115 正在转码，请稍候"
+			var info *service.PlaybackInfo
+			if latest, infoErr := svc.Cloud115.PlaybackInfo(c.Request.Context(), m.ID, definition); infoErr == nil && latest != nil {
+				info = latest
+				if latest.Transcode.Message != "" {
+					message = latest.Transcode.Message
+				}
+				if latest.Transcode.RetryAfterSec > 0 {
+					retryAfter = latest.Transcode.RetryAfterSec
+				}
+			}
+			c.JSON(http.StatusConflict, gin.H{
+				"code":            "transcode_pending",
+				"message":         message,
+				"retry_after_sec": retryAfter,
+				"playback":        info,
+			})
+			return
+		}
+		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
+	}
+}
+
+func cloud115HLSSessionHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc == nil || svc.Cloud115 == nil || svc.Cloud115.HLSProxy() == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "cloud115 playback unavailable"})
+			return
+		}
+		mediaID := c.Query("media_id")
+		if mediaID == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "missing media_id"})
+			return
+		}
+		if !enforceScopedPlaybackToken(c, mediaID) {
+			return
+		}
+		err := svc.Cloud115.HLSProxy().ServeChild(
+			c.Request.Context(),
+			c.Writer,
+			c.Request,
+			c.Param("session"),
+			c.Param("key"),
+		)
+		if err == nil || c.Writer.Written() {
+			return
+		}
+		switch {
+		case errors.Is(err, service.ErrCloud115HLSSessionNotFound):
+			c.JSON(http.StatusNotFound, gin.H{"error": "hls session not found"})
+		case errors.Is(err, service.ErrCloud115HLSUpstreamExpired):
+			c.JSON(http.StatusGone, gin.H{"error": "hls upstream expired"})
+		default:
+			c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
+		}
+	}
+}

internal/handler/danmaku_settings_test.go

@@ -112,7 +112,8 @@ func TestGetDanmakuConfigIncludesPerUserMergePreference(t *testing.T) {
 		t.Fatalf("status = %d, want 200", w.Code)
 	}
 	var cfg struct {
-		MergeSources bool `json:"merge_sources"`
+		MergeSources bool    `json:"merge_sources"`
+		PlaybackRate float64 `json:"playback_rate"`
 	}
 	if err := json.Unmarshal(w.Body.Bytes(), &cfg); err != nil {
 		t.Fatalf("decode: %v", err)
@@ -120,6 +121,9 @@ func TestGetDanmakuConfigIncludesPerUserMergePreference(t *testing.T) {
 	if cfg.MergeSources {
 		t.Fatal("default merge preference should be false")
 	}
+	if cfg.PlaybackRate != 1 {
+		t.Fatalf("default playback rate = %v, want 1", cfg.PlaybackRate)
+	}
 
 	if err := svc.Danmaku.SetMergeSources(t.Context(), "user-1", true); err != nil {
 		t.Fatalf("set: %v", err)
@@ -137,7 +141,7 @@ func TestGetDanmakuConfigIncludesPerUserMergePreference(t *testing.T) {
 func TestUpdateDanmakuSettingsPersistsAllPlayerPreferences(t *testing.T) {
 	svc := newDanmakuSettingsService(t)
 
-	body := "{\"enabled\":false,\"opacity\":0.6,\"font_size\":32,\"area\":0.7,\"merge_sources\":true,\"volume\":0.35,\"source\":\"https://dm.example/base/\",\"app_id\":\"my-app-id\",\"app_key\":\"my-app-secret\"}"
+	body := "{\"enabled\":false,\"opacity\":0.6,\"font_size\":32,\"area\":0.7,\"merge_sources\":true,\"volume\":0.35,\"playback_rate\":1.5,\"source\":\"https://dm.example/base/\",\"app_id\":\"my-app-id\",\"app_key\":\"my-app-secret\"}"
 	c, w := newDanmakuSettingsContext(t, svc, http.MethodPut, "/danmaku/settings", body, "user-1")
 	updateDanmakuSettingsHandler(svc)(c)
 
@@ -154,7 +158,7 @@ func TestUpdateDanmakuSettingsPersistsAllPlayerPreferences(t *testing.T) {
 	if cfg.Enabled || cfg.Opacity != "0.6" || cfg.FontSize != "32" || cfg.Area != "0.7" {
 		t.Fatalf("unexpected render config: %+v", cfg)
 	}
-	if !cfg.MergeSources || cfg.Volume != 0.35 {
+	if !cfg.MergeSources || cfg.Volume != 0.35 || cfg.PlaybackRate != 1.5 {
 		t.Fatalf("unexpected user preferences: %+v", cfg)
 	}
 	if cfg.Source != "https://dm.example/base" || cfg.AppID != "my-app-id" || !cfg.AppKeyConfigured {
@@ -165,11 +169,30 @@ func TestUpdateDanmakuSettingsPersistsAllPlayerPreferences(t *testing.T) {
 	if err != nil || user == nil {
 		t.Fatalf("read persisted user: %v", err)
 	}
-	if user.DanmakuAppKey != "my-app-secret" || user.PlayerVolume != 0.35 || user.DanmakuSource != "https://dm.example/base" {
+	if user.DanmakuAppKey != "my-app-secret" || user.PlayerVolume != 0.35 || user.PlayerPlaybackRate != 1.5 || user.DanmakuSource != "https://dm.example/base" {
 		t.Fatalf("preferences not persisted: %+v", user)
 	}
 }
 
+func TestUpdateDanmakuSettingsRejectsInvalidPlaybackRate(t *testing.T) {
+	svc := newDanmakuSettingsService(t)
+
+	c, w := newDanmakuSettingsContext(t, svc, http.MethodPut, "/danmaku/settings",
+		`{"playback_rate":4}`, "user-1")
+	updateDanmakuSettingsHandler(svc)(c)
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("status = %d, want 400 (body=%s)", w.Code, w.Body.String())
+	}
+	user, err := svc.Repo.User.FindByID(t.Context(), "user-1")
+	if err != nil || user == nil {
+		t.Fatalf("read user: %v", err)
+	}
+	if user.PlayerPlaybackRate != 1 {
+		t.Fatalf("invalid playback rate was persisted: %v", user.PlayerPlaybackRate)
+	}
+}
+
 func TestUpdateDanmakuSettingsRejectsInvalidSource(t *testing.T) {
 	svc := newDanmakuSettingsService(t)
 

internal/handler/routes_authenticated_core.go

@@ -44,6 +44,8 @@ func registerAuthedLibraryRoutes(authed *gin.RouterGroup, svc *service.Container
 func registerAuthedMediaRoutes(authed *gin.RouterGroup, svc *service.Container) {
 	authed.GET("/media/:id", getMediaHandler(svc))
 	authed.GET("/media/:id/episodes", listMediaEpisodesHandler(svc))
+	authed.GET("/media/:id/playback", mediaPlaybackInfoHandler(svc))
+	authed.POST("/media/:id/transcode", mediaTranscodeHandler(svc))
 	authed.GET("/media", searchMediaHandler(svc))
 	authed.PATCH("/media/:id/metadata", middleware.AdminRequired(), updateMediaMetadataHandler(svc))
 	authed.POST("/media/:id/scrape", middleware.AdminRequired(), scrapeOneHandler(svc))
@@ -65,6 +67,10 @@ func registerAuthedPlaybackAndProxyRoutes(authed *gin.RouterGroup, svc *service.
 	authed.GET("/hls/:id/index.m3u8", hlsPlaylistHandler(svc))
 	authed.GET("/hls/:id/:seg", hlsSegmentHandler(svc))
 	authed.DELETE("/hls/:id", stopTranscodeHandler(svc))
+	authed.GET("/cloud115/media/:id/master.m3u8", cloud115HLSMasterHandler(svc))
+	authed.HEAD("/cloud115/media/:id/master.m3u8", cloud115HLSMasterHandler(svc))
+	authed.GET("/cloud115/hls/:session/:key", cloud115HLSSessionHandler(svc))
+	authed.HEAD("/cloud115/hls/:session/:key", cloud115HLSSessionHandler(svc))
 
 	authed.GET("/img", imageProxyHandler(svc))
 }

internal/handler/series.go

@@ -89,7 +89,7 @@ func listLibrarySeriesHandler(svc *service.Container) gin.HandlerFunc {
 				writeInternalOrCanceled(c, err)
 				return
 			}
-			cards = service.SortSeriesCards(cards, sortSpec.Field, sortSpec.Order, history)
+			cards = sortRemoteSeriesCards(cards, sortSpec, history)
 			page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
 			size, _ := strconv.Atoi(c.DefaultQuery("page_size", "500"))
 			if page < 1 {

internal/handler/series_sort.go

@@ -0,0 +1,23 @@
+package handler
+
+import (
+	"slices"
+	"time"
+
+	"github.com/truewhile/MeBox/internal/service"
+)
+
+// sortRemoteSeriesCards keeps the DateLastContentAdded order returned by the
+// remote Emby server when LastAddedAt is not exposed in the Series DTO.
+func sortRemoteSeriesCards(cards []service.SeriesCard, spec service.MediaSortSpec, history map[string]time.Time) []service.SeriesCard {
+	if spec.Field != "updated_at" {
+		return service.SortSeriesCards(cards, spec.Field, spec.Order, history)
+	}
+
+	out := append([]service.SeriesCard(nil), cards...)
+	// RemoteSeriesCards always fetches DateLastContentAdded in descending order.
+	if spec.Order == "asc" {
+		slices.Reverse(out)
+	}
+	return service.SortSeriesCards(out, spec.Field, spec.Order, history)
+}

internal/handler/series_sort_test.go

@@ -0,0 +1,21 @@
+package handler
+
+import (
+	"testing"
+
+	"github.com/truewhile/MeBox/internal/service"
+)
+
+func TestSortRemoteSeriesCardsUpdatedAtUsesRemoteOrder(t *testing.T) {
+	cards := []service.SeriesCard{{Key: "newest"}, {Key: "middle"}, {Key: "oldest"}}
+
+	desc := sortRemoteSeriesCards(cards, service.MediaSortSpec{Field: "updated_at", Order: "desc"}, nil)
+	if desc[0].Key != "newest" || desc[1].Key != "middle" || desc[2].Key != "oldest" {
+		t.Fatalf("descending order = %q, %q, %q", desc[0].Key, desc[1].Key, desc[2].Key)
+	}
+
+	asc := sortRemoteSeriesCards(cards, service.MediaSortSpec{Field: "updated_at", Order: "asc"}, nil)
+	if asc[0].Key != "oldest" || asc[1].Key != "middle" || asc[2].Key != "newest" {
+		t.Fatalf("ascending order = %q, %q, %q", asc[0].Key, asc[1].Key, asc[2].Key)
+	}
+}

internal/middleware/auth.go

@@ -125,6 +125,8 @@ func externalPlaybackTokenAllowedPath(c *gin.Context, mediaID string) bool {
 			return len(segments) >= 3 &&
 				strings.EqualFold(segments[2], "play") &&
 				strings.TrimSpace(c.Query("media_id")) == mediaID
+		case "cloud115":
+			return strings.TrimSpace(c.Query("media_id")) == mediaID
 		}
 	}
 	return false

internal/model/user.go

@@ -33,6 +33,7 @@ type User struct {
 	SubtitleChineseMode string `gorm:"size:16;not null;default:original" json:"subtitle_chinese_mode"`
 	// 网页播放器偏好按用户存储，切换媒体对象后继续沿用。
 	PlayerVolume        float64 `gorm:"not null;default:1" json:"player_volume"`
+	PlayerPlaybackRate  float64 `gorm:"not null;default:1" json:"player_playback_rate"`
 	DanmakuEnabled      bool    `gorm:"not null;default:true" json:"danmaku_enabled"`
 	DanmakuOpacity      float64 `gorm:"not null;default:1" json:"danmaku_opacity"`
 	DanmakuFontSize     int     `gorm:"not null;default:24" json:"danmaku_font_size"`

internal/service/cloud115/video.go

@@ -0,0 +1,186 @@
+// 115 开放平台视频播放/转码 API。
+//
+// 播放接口返回的是 115 云端转码后的 HLS（m3u8）地址，不是原文件
+// downurl；未完成转码时接口会返回 state=false，可再调用 video_push
+// 请求加速转码。
+package cloud115
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// FlexString 兼容 115 接口同字段在不同设备端返回字符串或数字的情况。
+type FlexString string
+
+func (s *FlexString) UnmarshalJSON(data []byte) error {
+	raw := bytes.TrimSpace(data)
+	if len(raw) == 0 || bytes.Equal(raw, []byte("null")) {
+		*s = ""
+		return nil
+	}
+	var str string
+	if err := json.Unmarshal(raw, &str); err == nil {
+		*s = FlexString(str)
+		return nil
+	}
+	var num json.Number
+	if err := json.Unmarshal(raw, &num); err == nil {
+		*s = FlexString(num.String())
+		return nil
+	}
+	return fmt.Errorf("115: 无法解析字符串/数字字段 %s", string(raw))
+}
+
+func (s FlexString) String() string {
+	return string(s)
+}
+
+func (s FlexString) Int64() int64 {
+	v, _ := strconv.ParseInt(strings.TrimSpace(string(s)), 10, 64)
+	return v
+}
+
+// MultiTrack 是 115 返回的一条音轨信息。
+type MultiTrack struct {
+	Title      string `json:"title"`
+	IsSelected string `json:"is_selected"`
+	SyncTime   string `json:"sync_time"`
+}
+
+// MultiTrackList 兼容 115 接口把 multitrack_list 返回成对象（键为音轨序号）
+// 或数组的两种形态。
+type MultiTrackList []MultiTrack
+
+func (l *MultiTrackList) UnmarshalJSON(data []byte) error {
+	raw := bytes.TrimSpace(data)
+	if len(raw) == 0 || bytes.Equal(raw, []byte("null")) || bytes.Equal(raw, []byte("{}")) {
+		*l = nil
+		return nil
+	}
+	if raw[0] == '[' {
+		var arr []MultiTrack
+		if err := json.Unmarshal(raw, &arr); err != nil {
+			return err
+		}
+		*l = arr
+		return nil
+	}
+	if raw[0] == '{' {
+		var m map[string]MultiTrack
+		if err := json.Unmarshal(raw, &m); err != nil {
+			return err
+		}
+		keys := make([]int, 0, len(m))
+		for key := range m {
+			idx, err := strconv.Atoi(strings.TrimSpace(key))
+			if err != nil {
+				continue
+			}
+			keys = append(keys, idx)
+		}
+		sort.Ints(keys)
+		out := make([]MultiTrack, 0, len(keys))
+		for _, idx := range keys {
+			out = append(out, m[strconv.Itoa(idx)])
+		}
+		*l = out
+		return nil
+	}
+	return fmt.Errorf("115: multitrack_list 既不是对象也不是数组")
+}
+
+// VideoURLItem 是 115 返回的一条清晰度播放地址。
+type VideoURLItem struct {
+	URL         string `json:"url"`
+	Height      int    `json:"height"`
+	Width       int    `json:"width"`
+	Definition  int    `json:"definition"`
+	Title       string `json:"title"`
+	DefinitionN int    `json:"definition_n"`
+}
+
+// VideoPlayData 是 /open/video/play 的 data 字段。
+type VideoPlayData struct {
+	FileID            string            `json:"file_id"`
+	ParentID          string            `json:"parent_id"`
+	FileName          string            `json:"file_name"`
+	FileSize          FlexString        `json:"file_size"`
+	FileSha1          string            `json:"file_sha1"`
+	FileType          string            `json:"file_type"`
+	IsPrivate         FlexString        `json:"is_private"`
+	PlayLong          FlexString        `json:"play_long"`
+	UserDef           int               `json:"user_def"`
+	UserRotate        int               `json:"user_rotate"`
+	UserTurn          int               `json:"user_turn"`
+	MultitrackList    MultiTrackList    `json:"multitrack_list"`
+	DefinitionList    map[string]string `json:"definition_list"`
+	DefinitionListNew map[string]string `json:"definition_list_new"`
+	VideoURL          []VideoURLItem    `json:"video_url"`
+	VideoPushState    *bool             `json:"video_push_state"`
+}
+
+// GetVideoPlayInfo 调用 115 视频在线播放接口。
+//
+// 注意：state=false（例如视频尚未转码）时 doAuthJSON 会返回 error，但仍会
+// 返回已解析的 RespBase/VideoPlayData。调用方需要同时检查两者：有 data 时
+// 可用于判断需要等待还是触发加速转码。
+func (c *OpenClient) GetVideoPlayInfo(ctx context.Context, pickCode, ua string) (*RespBase, *VideoPlayData, error) {
+	pickCode = strings.TrimSpace(pickCode)
+	if pickCode == "" {
+		return nil, nil, fmt.Errorf("115: pick_code 为空")
+	}
+	resp, err := c.doAuthJSONWithUA(
+		ctx,
+		http.MethodGet,
+		ProAPIBase+"/open/video/play",
+		map[string]string{"pick_code": pickCode},
+		1,
+		ua,
+	)
+	if resp == nil {
+		return nil, nil, err
+	}
+	data := &VideoPlayData{}
+	if len(resp.Data) > 0 {
+		trimmed := bytes.TrimSpace(resp.Data)
+		if !bytes.Equal(trimmed, []byte("null")) {
+			if decodeErr := json.Unmarshal(trimmed, data); decodeErr != nil && err == nil {
+				err = fmt.Errorf("115: 解析视频播放信息失败：%w", decodeErr)
+			}
+		}
+	}
+	return resp, data, err
+}
+
+// SubmitVideoPush 提交 115 加速转码请求。
+//
+// op 支持 vip_push（按 VIP 等级加速）和 pay_push（消耗枫币）。调用方必须
+// 明确选择 op，默认空值按 vip_push 处理，避免误消费枫币。
+func (c *OpenClient) SubmitVideoPush(ctx context.Context, pickCode, op string) error {
+	pickCode = strings.TrimSpace(pickCode)
+	if pickCode == "" {
+		return fmt.Errorf("115: pick_code 为空")
+	}
+	op = strings.TrimSpace(op)
+	if op == "" {
+		op = "vip_push"
+	}
+	_, err := c.doAuthJSON(
+		ctx,
+		http.MethodPost,
+		ProAPIBase+"/open/video/video_push",
+		map[string]string{
+			"pick_code": pickCode,
+			"op":        op,
+		},
+		1,
+	)
+	return err
+}

internal/service/cloud115_hls_proxy.go

@@ -0,0 +1,361 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/truewhile/MeBox/internal/service/cloud115"
+)
+
+var (
+	ErrCloud115HLSSessionNotFound = errors.New("115 hls session not found")
+	ErrCloud115HLSUpstreamExpired = errors.New("115 hls upstream expired")
+)
+
+const (
+	cloud115HLSSessionTTL  = 30 * time.Minute
+	cloud115HLSMaxSessions = 256
+	cloud115HLSMaxManifest = 8 << 20
+)
+
+type cloud115HLSSession struct {
+	ID         string
+	MediaID    string
+	Definition int
+	CreatedAt  time.Time
+	ExpiresAt  time.Time
+
+	mu      sync.Mutex
+	entries map[string]string
+	next    int
+}
+
+// Cloud115HLSProxy 把 115 云端 HLS 转成 MeBox 同源 HLS。
+//
+// 浏览器不能直接请求 115 的 m3u8：master/variant/分片的 CORS 只允许
+// https://115.com，且 master 还是 HTTP。代理在服务端拉取并重写播放列表，
+// 分片按 Range 流式转发。
+type Cloud115HLSProxy struct {
+	service *Cloud115PlaybackService
+	client  *http.Client
+
+	mu       sync.Mutex
+	sessions map[string]*cloud115HLSSession
+}
+
+func newCloud115HLSProxy(service *Cloud115PlaybackService) *Cloud115HLSProxy {
+	return &Cloud115HLSProxy{
+		service: service,
+		client: &http.Client{
+			Timeout: 0,
+			CheckRedirect: func(req *http.Request, via []*http.Request) error {
+				if len(via) >= 6 {
+					return errors.New("stopped after 6 redirects")
+				}
+				return nil
+			},
+		},
+		sessions: make(map[string]*cloud115HLSSession),
+	}
+}
+
+// ServeMaster 解析指定清晰度并返回重写后的 master.m3u8。
+func (p *Cloud115HLSProxy) ServeMaster(ctx context.Context, w http.ResponseWriter, r *http.Request, mediaID string, definition int) error {
+	if p == nil || p.service == nil {
+		return ErrCloud115NotApplicable
+	}
+	upstream, _, err := p.service.ResolveCloud115URL(ctx, mediaID, definition)
+	if err != nil {
+		return err
+	}
+	session := p.newSession(mediaID, definition)
+	fetchCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
+	defer cancel()
+	resp, err := p.fetchUpstream(fetchCtx, upstream, "")
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return fmt.Errorf("115 云端播放列表返回 HTTP %d", resp.StatusCode)
+	}
+	body, err := io.ReadAll(io.LimitReader(resp.Body, cloud115HLSMaxManifest))
+	if err != nil {
+		return err
+	}
+	baseURL := upstream
+	if resp.Request != nil && resp.Request.URL != nil {
+		baseURL = resp.Request.URL.String()
+	}
+	rewritten := p.rewriteManifest(session, string(body), baseURL, r.URL.RawQuery)
+	p.storeSession(session)
+
+	w.Header().Set("Content-Type", "application/vnd.apple.mpegurl")
+	w.Header().Set("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0")
+	w.Header().Set("Content-Length", strconv.Itoa(len(rewritten)))
+	if r.Method != http.MethodHead {
+		_, err = io.WriteString(w, rewritten)
+	}
+	return err
+}
+
+// ServeChild 代理 variant/分片；variant 播放列表会继续重写为同源地址。
+func (p *Cloud115HLSProxy) ServeChild(ctx context.Context, w http.ResponseWriter, r *http.Request, sessionID, key string) error {
+	session, upstream, ok := p.lookup(sessionID, key)
+	if !ok {
+		return ErrCloud115HLSSessionNotFound
+	}
+	resp, err := p.fetchUpstream(ctx, upstream, r.Header.Get("Range"))
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode == http.StatusForbidden || resp.StatusCode == http.StatusGone {
+		p.deleteSession(sessionID)
+		return ErrCloud115HLSUpstreamExpired
+	}
+
+	contentType := strings.ToLower(strings.TrimSpace(resp.Header.Get("Content-Type")))
+	isPlaylist := strings.Contains(contentType, "mpegurl") ||
+		strings.Contains(contentType, "application/vnd.apple.mpegurl")
+
+	if !isPlaylist {
+		body, readErr := io.ReadAll(io.LimitReader(resp.Body, 4096))
+		if readErr != nil {
+			return readErr
+		}
+		if strings.HasPrefix(strings.TrimSpace(string(body)), "#EXTM3U") {
+			isPlaylist = true
+			resp.Body = io.NopCloser(io.MultiReader(strings.NewReader(string(body)), resp.Body))
+		} else {
+			resp.Body = io.NopCloser(io.MultiReader(strings.NewReader(string(body)), resp.Body))
+		}
+	}
+
+	copyUpstreamHeaders(w, resp, isPlaylist)
+	if isPlaylist {
+		body, err := io.ReadAll(io.LimitReader(resp.Body, cloud115HLSMaxManifest))
+		if err != nil {
+			return err
+		}
+		baseURL := upstream
+		if resp.Request != nil && resp.Request.URL != nil {
+			baseURL = resp.Request.URL.String()
+		}
+		rewritten := p.rewriteManifest(session, string(body), baseURL, r.URL.RawQuery)
+		w.Header().Set("Content-Type", "application/vnd.apple.mpegurl")
+		w.Header().Set("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0")
+		w.Header().Set("Content-Length", strconv.Itoa(len(rewritten)))
+		w.WriteHeader(resp.StatusCode)
+		if r.Method != http.MethodHead {
+			_, err = io.WriteString(w, rewritten)
+		}
+		return err
+	}
+
+	w.WriteHeader(resp.StatusCode)
+	if r.Method != http.MethodHead {
+		_, err = io.Copy(w, resp.Body)
+	}
+	return err
+}
+
+func (p *Cloud115HLSProxy) newSession(mediaID string, definition int) *cloud115HLSSession {
+	now := time.Now()
+	return &cloud115HLSSession{
+		ID:         cloud115.RandomString(24),
+		MediaID:    mediaID,
+		Definition: definition,
+		CreatedAt:  now,
+		ExpiresAt:  now.Add(cloud115HLSSessionTTL),
+		entries:    make(map[string]string),
+	}
+}
+
+func (p *Cloud115HLSProxy) storeSession(session *cloud115HLSSession) {
+	if p == nil || session == nil {
+		return
+	}
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	now := time.Now()
+	if len(p.sessions) >= cloud115HLSMaxSessions {
+		for id, existing := range p.sessions {
+			if now.After(existing.ExpiresAt) {
+				delete(p.sessions, id)
+			}
+		}
+	}
+	if len(p.sessions) >= cloud115HLSMaxSessions {
+		for id := range p.sessions {
+			delete(p.sessions, id)
+			break
+		}
+	}
+	session.ExpiresAt = now.Add(cloud115HLSSessionTTL)
+	p.sessions[session.ID] = session
+}
+
+func (p *Cloud115HLSProxy) lookup(sessionID, key string) (*cloud115HLSSession, string, bool) {
+	if p == nil {
+		return nil, "", false
+	}
+	p.mu.Lock()
+	session := p.sessions[sessionID]
+	if session != nil && time.Now().After(session.ExpiresAt) {
+		delete(p.sessions, sessionID)
+		session = nil
+	}
+	p.mu.Unlock()
+	if session == nil {
+		return nil, "", false
+	}
+	session.mu.Lock()
+	upstream, ok := session.entries[key]
+	session.mu.Unlock()
+	return session, upstream, ok
+}
+
+func (p *Cloud115HLSProxy) deleteSession(sessionID string) {
+	if p == nil {
+		return
+	}
+	p.mu.Lock()
+	delete(p.sessions, sessionID)
+	p.mu.Unlock()
+}
+
+func (p *Cloud115HLSProxy) fetchUpstream(ctx context.Context, rawURL, rangeHeader string) (*http.Response, error) {
+	parsed, err := url.Parse(strings.TrimSpace(rawURL))
+	if err != nil || parsed == nil || !isAllowed115UpstreamHost(parsed.Hostname()) {
+		return nil, fmt.Errorf("115 hls upstream host not allowed: %s", rawURL)
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, rawURL, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("User-Agent", cloud115.DefaultUA)
+	if strings.TrimSpace(rangeHeader) != "" {
+		req.Header.Set("Range", rangeHeader)
+	}
+	return p.client.Do(req)
+}
+
+func isAllowed115UpstreamHost(host string) bool {
+	host = strings.ToLower(strings.TrimSpace(host))
+	if host == "" {
+		return false
+	}
+	for _, suffix := range []string{".115.com", ".115cdn.com", ".115cdn.net"} {
+		if strings.HasSuffix(host, suffix) {
+			return true
+		}
+	}
+	return host == "115.com" || host == "115cdn.com" || host == "115cdn.net"
+}
+
+func (p *Cloud115HLSProxy) rewriteManifest(session *cloud115HLSSession, text, baseURL, rawQuery string) string {
+	if session == nil {
+		return text
+	}
+	lines := strings.SplitAfter(text, "\n")
+	for i, line := range lines {
+		trimmed := strings.TrimSpace(line)
+		if trimmed == "" {
+			continue
+		}
+		if strings.HasPrefix(trimmed, "#") {
+			if strings.HasPrefix(trimmed, "#EXT-X-MEDIA:") ||
+				strings.HasPrefix(trimmed, "#EXT-X-KEY:") ||
+				strings.HasPrefix(trimmed, "#EXT-X-MAP:") {
+				lines[i] = replaceManifestURI(line, func(uri string) string {
+					return p.proxyURL(session, resolveManifestURL(baseURL, uri), rawQuery)
+				})
+			}
+			continue
+		}
+		lines[i] = p.proxyURL(session, resolveManifestURL(baseURL, trimmed), rawQuery) + lineEnding(line)
+	}
+	return strings.Join(lines, "")
+}
+
+func (p *Cloud115HLSProxy) proxyURL(session *cloud115HLSSession, upstream, rawQuery string) string {
+	session.mu.Lock()
+	session.next++
+	key := "e" + strconv.Itoa(session.next)
+	session.entries[key] = upstream
+	mediaID := session.MediaID
+	session.mu.Unlock()
+
+	query := childProxyQuery(rawQuery, mediaID)
+	return "/api/cloud115/hls/" + url.PathEscape(session.ID) + "/" + url.PathEscape(key) + "?" + query
+}
+
+func childProxyQuery(rawQuery, mediaID string) string {
+	values, _ := url.ParseQuery(rawQuery)
+	keep := url.Values{}
+	for _, key := range []string{"token", "api_key", "apiKey", "ApiKey", "profile_id", "profile_pin_token"} {
+		if value := strings.TrimSpace(values.Get(key)); value != "" {
+			keep.Set(key, value)
+		}
+	}
+	if strings.TrimSpace(mediaID) != "" {
+		keep.Set("media_id", mediaID)
+	}
+	return keep.Encode()
+}
+
+func replaceManifestURI(line string, replace func(string) string) string {
+	const marker = `URI="`
+	idx := strings.Index(line, marker)
+	if idx < 0 {
+		return line
+	}
+	start := idx + len(marker)
+	end := strings.Index(line[start:], `"`)
+	if end < 0 {
+		return line
+	}
+	end += start
+	return line[:start] + replace(line[start:end]) + line[end:]
+}
+
+func resolveManifestURL(baseURL, raw string) string {
+	base, baseErr := url.Parse(strings.TrimSpace(baseURL))
+	ref, refErr := url.Parse(strings.TrimSpace(raw))
+	if baseErr != nil || refErr != nil || base == nil || ref == nil {
+		return raw
+	}
+	return base.ResolveReference(ref).String()
+}
+
+func lineEnding(line string) string {
+	if strings.HasSuffix(line, "\r\n") {
+		return "\r\n"
+	}
+	if strings.HasSuffix(line, "\n") {
+		return "\n"
+	}
+	return ""
+}
+
+func copyUpstreamHeaders(w http.ResponseWriter, resp *http.Response, playlist bool) {
+	for _, key := range []string{"Content-Type", "Content-Length", "Content-Range", "Accept-Ranges", "ETag", "Last-Modified"} {
+		if value := resp.Header.Get(key); value != "" {
+			w.Header().Set(key, value)
+		}
+	}
+	if playlist {
+		w.Header().Set("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0")
+	} else if w.Header().Get("Cache-Control") == "" {
+		w.Header().Set("Cache-Control", "public, max-age=3600")
+	}
+}

internal/service/cloud115_hls_proxy_test.go

@@ -0,0 +1,151 @@
+package service
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestCloud115HLSProxyRewriteManifest(t *testing.T) {
+	proxy := &Cloud115HLSProxy{sessions: map[string]*cloud115HLSSession{}}
+	session := &cloud115HLSSession{
+		ID:      "sess",
+		MediaID: "media-1",
+		entries: map[string]string{},
+	}
+	manifest := "#EXTM3U\n#EXT-X-STREAM-INF:BANDWIDTH=1800000,RESOLUTION=1280x720\nhttps://cpats01.115.com/a.m3u8?u=1&se=2\n"
+	rewritten := proxy.rewriteManifest(session, manifest, "http://videoplay.115.com/m3u8/pc", "token=t&media_id=media-1")
+	if strings.Contains(rewritten, "cpats01.115.com") {
+		t.Fatalf("upstream URL leaked into rewritten manifest: %s", rewritten)
+	}
+	if !strings.Contains(rewritten, "/api/cloud115/hls/sess/e1?") {
+		t.Fatalf("proxy URL missing: %s", rewritten)
+	}
+	if !strings.Contains(rewritten, "media_id=media-1") || !strings.Contains(rewritten, "token=t") {
+		t.Fatalf("auth/media query missing: %s", rewritten)
+	}
+	if len(session.entries) != 1 {
+		t.Fatalf("session entries = %d, want 1", len(session.entries))
+	}
+}
+
+func TestCloud115HLSProxyRewriteKeyURI(t *testing.T) {
+	proxy := &Cloud115HLSProxy{sessions: map[string]*cloud115HLSSession{}}
+	session := &cloud115HLSSession{
+		ID:      "sess",
+		MediaID: "media-1",
+		entries: map[string]string{},
+	}
+	manifest := `#EXTM3U
+#EXT-X-KEY:METHOD=AES-128,URI="https://cpats01.115.com/key?k=1"
+#EXTINF:10.0,
+https://cpats01.115.com/seg.ts?x=1
+`
+	rewritten := proxy.rewriteManifest(session, manifest, "https://cpats01.115.com/v.m3u8", "token=t&media_id=media-1")
+	if strings.Contains(rewritten, "cpats01.115.com") {
+		t.Fatalf("upstream URL leaked into rewritten key manifest: %s", rewritten)
+	}
+	if len(session.entries) != 2 {
+		t.Fatalf("session entries = %d, want 2", len(session.entries))
+	}
+}
+
+func TestIsAllowed115UpstreamHost(t *testing.T) {
+	for _, host := range []string{"videoplay.115.com", "cpats01.115.com", "cdn.115cdn.net"} {
+		if !isAllowed115UpstreamHost(host) {
+			t.Fatalf("host %q should be allowed", host)
+		}
+	}
+	for _, host := range []string{"", "evil.example.com", "115.com.evil.example.com"} {
+		if isAllowed115UpstreamHost(host) {
+			t.Fatalf("host %q should be rejected", host)
+		}
+	}
+}
+
+func TestCloud115HLSProxyServeChildRewritesVariant(t *testing.T) {
+	proxy := &Cloud115HLSProxy{
+		sessions: map[string]*cloud115HLSSession{},
+	}
+	proxy.client = &http.Client{Transport: roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		body := "#EXTM3U\n#EXT-X-TARGETDURATION:10\nhttps://cpats01.115.com/seg.ts?x=1\n"
+		return &http.Response{
+			StatusCode: http.StatusOK,
+			Header: http.Header{
+				"Content-Type": []string{"application/vnd.apple.mpegurl"},
+			},
+			Body:    io.NopCloser(strings.NewReader(body)),
+			Request: req,
+		}, nil
+	})}
+	session := &cloud115HLSSession{
+		ID:        "sess",
+		MediaID:   "media-1",
+		ExpiresAt: time.Now().Add(time.Hour),
+		entries:   map[string]string{"e1": "https://cpats01.115.com/v.m3u8"},
+		next:      1,
+	}
+	proxy.sessions[session.ID] = session
+	req := httptest.NewRequest(http.MethodGet, "/api/cloud115/hls/sess/e1?media_id=media-1&token=t", nil)
+	rec := httptest.NewRecorder()
+	if err := proxy.ServeChild(context.Background(), rec, req, session.ID, "e1"); err != nil {
+		t.Fatalf("ServeChild: %v", err)
+	}
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200", rec.Code)
+	}
+	if !strings.Contains(rec.Body.String(), "/api/cloud115/hls/sess/e2?") {
+		t.Fatalf("rewritten variant missing proxy segment: %s", rec.Body.String())
+	}
+	if strings.Contains(rec.Body.String(), "cpats01.115.com") {
+		t.Fatalf("upstream URL leaked in variant: %s", rec.Body.String())
+	}
+}
+
+func TestCloud115HLSProxyServeChildStreamsRange(t *testing.T) {
+	payload := []byte("segment-bytes")
+	proxy := &Cloud115HLSProxy{
+		sessions: map[string]*cloud115HLSSession{},
+	}
+	proxy.client = &http.Client{Transport: roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		return &http.Response{
+			StatusCode: http.StatusPartialContent,
+			Header: http.Header{
+				"Content-Type":   []string{"video/mp2t"},
+				"Content-Range":  []string{"bytes 0-12/100"},
+				"Content-Length": []string{strconv.Itoa(len(payload))},
+			},
+			Body:    io.NopCloser(bytes.NewReader(payload)),
+			Request: req,
+		}, nil
+	})}
+	session := &cloud115HLSSession{
+		ID:        "sess",
+		MediaID:   "media-1",
+		ExpiresAt: time.Now().Add(time.Hour),
+		entries:   map[string]string{"e1": "https://cpats01.115.com/seg.ts?x=1"},
+		next:      1,
+	}
+	proxy.sessions[session.ID] = session
+	req := httptest.NewRequest(http.MethodGet, "/api/cloud115/hls/sess/e1?media_id=media-1&token=t", nil)
+	req.Header.Set("Range", "bytes=0-12")
+	rec := httptest.NewRecorder()
+	if err := proxy.ServeChild(context.Background(), rec, req, session.ID, "e1"); err != nil {
+		t.Fatalf("ServeChild: %v", err)
+	}
+	if rec.Code != http.StatusPartialContent {
+		t.Fatalf("status = %d, want 206", rec.Code)
+	}
+	if rec.Header().Get("Content-Range") != "bytes 0-12/100" {
+		t.Fatalf("content-range = %q", rec.Header().Get("Content-Range"))
+	}
+	if !bytes.Equal(rec.Body.Bytes(), payload) {
+		t.Fatalf("payload = %q, want %q", rec.Body.Bytes(), payload)
+	}
+}

internal/service/cloud115_playback.go

@@ -0,0 +1,411 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"go.uber.org/zap"
+
+	"github.com/truewhile/MeBox/internal/config"
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
+	"github.com/truewhile/MeBox/internal/service/cloud"
+	"github.com/truewhile/MeBox/internal/service/cloud115"
+)
+
+var (
+	ErrCloud115TranscodePending = errors.New("115 cloud transcode pending")
+	ErrCloud115NotApplicable    = errors.New("115 cloud playback not applicable")
+)
+
+// Cloud115TranscodeState 描述当前请求清晰度的云端转码状态。
+type Cloud115TranscodeState struct {
+	State         string `json:"state"` // idle / ready / transcoding / unavailable
+	Definition    string `json:"definition,omitempty"`
+	Message       string `json:"message,omitempty"`
+	RetryAfterSec int    `json:"retry_after_sec,omitempty"`
+	StartedAt     int64  `json:"started_at,omitempty"`
+}
+
+// PlaybackInfo 是播放器加载时获取的统一播放能力描述。
+type PlaybackInfo struct {
+	MediaID        string                 `json:"media_id"`
+	Provider       string                 `json:"provider"`
+	Fallback       []string               `json:"fallback"`
+	DefaultQuality string                 `json:"default_quality"`
+	CloudQualities []PlaybackQuality      `json:"cloud_qualities,omitempty"`
+	LocalQualities []PlaybackQuality      `json:"local_qualities"`
+	Transcode      Cloud115TranscodeState `json:"transcode"`
+}
+
+type cloud115PushAttempt struct {
+	at      time.Time
+	success bool
+	message string
+}
+
+// Cloud115PlaybackService 负责 115 云端播放、清晰度列表和云端转码触发。
+// 实际的 HLS 代理在 Cloud115HLSProxy 中。
+type Cloud115PlaybackService struct {
+	cfg  *config.Config
+	log  *zap.Logger
+	repo *repository.Container
+	strm *StrmService
+
+	mu        sync.Mutex
+	pushState map[string]cloud115PushAttempt
+
+	proxy *Cloud115HLSProxy
+}
+
+func NewCloud115PlaybackService(cfg *config.Config, log *zap.Logger, repo *repository.Container, strm *StrmService) *Cloud115PlaybackService {
+	svc := &Cloud115PlaybackService{
+		cfg:       cfg,
+		log:       log,
+		repo:      repo,
+		strm:      strm,
+		pushState: make(map[string]cloud115PushAttempt),
+	}
+	svc.proxy = newCloud115HLSProxy(svc)
+	return svc
+}
+
+// HLSProxy 返回 115 云 HLS 反向代理。
+func (s *Cloud115PlaybackService) HLSProxy() *Cloud115HLSProxy {
+	if s == nil {
+		return nil
+	}
+	return s.proxy
+}
+
+// PlaybackInfo 返回媒体在 direct/115-cloud/local 三种模式下的能力描述。
+//
+// requestedDefinition 为空或 0 时默认选择 1080P；该档位不可用时返回
+// transcoding 状态（并只触发一次加速转码，避免轮询风暴）。
+func (s *Cloud115PlaybackService) PlaybackInfo(ctx context.Context, mediaID string, requestedDefinition int) (*PlaybackInfo, error) {
+	if s == nil || s.repo == nil || s.repo.Media == nil {
+		return nil, ErrMediaNotFound
+	}
+	m, err := s.repo.Media.FindByID(ctx, mediaID)
+	if err != nil {
+		return nil, err
+	}
+	if m == nil {
+		return nil, ErrMediaNotFound
+	}
+
+	provider := MediaPlaybackProvider(m)
+	localQualities := LocalQualityOptions(m)
+	localDefault := DefaultLocalHLSQualityID(m)
+	info := &PlaybackInfo{
+		MediaID:        m.ID,
+		Provider:       provider,
+		DefaultQuality: localDefault,
+		LocalQualities: localQualities,
+		Transcode:      Cloud115TranscodeState{State: "idle"},
+	}
+	if provider != model.StrmProvider115 {
+		info.Fallback = []string{"direct", "local_hls"}
+		return info, nil
+	}
+
+	account, pickCode, client, err := s.resolve115Target(ctx, m)
+	if err != nil {
+		info.Fallback = []string{"direct", "local_hls"}
+		info.Transcode = Cloud115TranscodeState{State: "unavailable", Message: err.Error()}
+		return info, nil
+	}
+
+	resp, data, playErr := client.GetVideoPlayInfo(ctx, pickCode, cloud115.DefaultUA)
+	if cloud115PlayInfoFatal(resp, playErr) {
+		info.Fallback = []string{"direct", "local_hls"}
+		info.Transcode = Cloud115TranscodeState{
+			State:   "unavailable",
+			Message: cloud115PlayErrorMessage(playErr, resp),
+		}
+		return info, nil
+	}
+
+	cloudQualities := Cloud115QualityOptions(m, data)
+	info.CloudQualities = cloudQualities
+	info.Fallback = []string{"direct", "cloud_hls", "local_hls"}
+	info.DefaultQuality = DefaultCloud115Quality(cloudQualities)
+
+	requested := strings.TrimSpace(strconv.Itoa(requestedDefinition))
+	if requestedDefinition <= 0 || requested == "0" {
+		requested = info.DefaultQuality
+	}
+	selected, ok := findPlaybackQuality(cloudQualities, requested)
+	if !ok {
+		info.Transcode = Cloud115TranscodeState{
+			State:      "unavailable",
+			Definition: requested,
+			Message:    "115 不支持该清晰度",
+		}
+		return info, nil
+	}
+	if selected.Source == "original" {
+		info.Transcode = Cloud115TranscodeState{State: "ready", Definition: selected.ID}
+		return info, nil
+	}
+	if selected.Available {
+		info.Transcode = Cloud115TranscodeState{State: "ready", Definition: selected.ID}
+		return info, nil
+	}
+
+	info.Transcode = s.ensureCloudTranscode(ctx, account.ID, pickCode, selected, client)
+	return info, nil
+}
+
+// StartTranscode 显式触发某个清晰度的云端转码，返回最新状态。
+func (s *Cloud115PlaybackService) StartTranscode(ctx context.Context, mediaID string, definition int) (*PlaybackInfo, error) {
+	return s.PlaybackInfo(ctx, mediaID, definition)
+}
+
+// ResolveCloud115URL 返回指定清晰度的 115 云端 m3u8 地址。
+// 档位尚未转码完成时返回 ErrCloud115TranscodePending。
+func (s *Cloud115PlaybackService) ResolveCloud115URL(ctx context.Context, mediaID string, definition int) (string, *cloud115.VideoPlayData, error) {
+	m, err := s.repo.Media.FindByID(ctx, mediaID)
+	if err != nil {
+		return "", nil, err
+	}
+	if m == nil {
+		return "", nil, ErrMediaNotFound
+	}
+	if MediaPlaybackProvider(m) != model.StrmProvider115 {
+		return "", nil, ErrCloud115NotApplicable
+	}
+	_, pickCode, client, err := s.resolve115Target(ctx, m)
+	if err != nil {
+		return "", nil, err
+	}
+	resp, data, playErr := client.GetVideoPlayInfo(ctx, pickCode, cloud115.DefaultUA)
+	if cloud115PlayInfoFatal(resp, playErr) {
+		return "", data, fmt.Errorf("115 云端播放不可用：%s", cloud115PlayErrorMessage(playErr, resp))
+	}
+	requested := definition
+	if requested <= 0 {
+		requested = 4
+	}
+	item := findVideoURL(data, requested)
+	if item == nil || strings.TrimSpace(item.URL) == "" {
+		return "", data, ErrCloud115TranscodePending
+	}
+	return strings.TrimSpace(item.URL), data, nil
+}
+
+func (s *Cloud115PlaybackService) ensureCloudTranscode(
+	ctx context.Context,
+	accountID, pickCode string,
+	quality PlaybackQuality,
+	client *cloud115.OpenClient,
+) Cloud115TranscodeState {
+	key := accountID + ":" + pickCode
+	now := time.Now()
+
+	s.mu.Lock()
+	if last, ok := s.pushState[key]; ok {
+		ttl := 2 * time.Minute
+		if last.success {
+			ttl = 3 * time.Hour
+		}
+		if now.Sub(last.at) < ttl {
+			s.mu.Unlock()
+			return Cloud115TranscodeState{
+				State:         "transcoding",
+				Definition:    quality.ID,
+				Message:       last.message,
+				RetryAfterSec: 5,
+				StartedAt:     last.at.Unix(),
+			}
+		}
+	}
+	s.mu.Unlock()
+
+	err := client.SubmitVideoPush(ctx, pickCode, "vip_push")
+	attempt := cloud115PushAttempt{at: now, success: err == nil}
+	if err != nil {
+		attempt.message = fmt.Sprintf("115 云端转码排队中（加速请求未成功：%s）", cloud115PlayErrorMessage(err, nil))
+	} else {
+		attempt.message = fmt.Sprintf("已触发 115 云端转码，正在等待 %s…", quality.Label)
+	}
+
+	s.mu.Lock()
+	s.pushState[key] = attempt
+	s.mu.Unlock()
+
+	return Cloud115TranscodeState{
+		State:         "transcoding",
+		Definition:    quality.ID,
+		Message:       attempt.message,
+		RetryAfterSec: 5,
+		StartedAt:     now.Unix(),
+	}
+}
+
+func (s *Cloud115PlaybackService) resolve115Target(ctx context.Context, m *model.Media) (*model.StrmAccount, string, *cloud115.OpenClient, error) {
+	if s == nil || s.strm == nil || s.repo == nil || s.repo.StrmAccount == nil {
+		return nil, "", nil, ErrCloud115NotApplicable
+	}
+	raw := strings.TrimSpace(m.STRMURL)
+	if raw == "" && strings.HasSuffix(strings.ToLower(strings.TrimSpace(m.Path)), ".strm") {
+		parsed, err := readLocalSTRMTarget(m.Path)
+		if err != nil {
+			return nil, "", nil, err
+		}
+		raw = strings.TrimSpace(parsed)
+	}
+	if raw == "" {
+		return nil, "", nil, fmt.Errorf("缺少 STRM 播放目标")
+	}
+	u, err := url.Parse(raw)
+	if err != nil {
+		return nil, "", nil, err
+	}
+	if !strings.Contains(strings.ToLower(u.Path), "/api/strm/play/cloud115/") &&
+		!strings.Contains(strings.ToLower(u.Path), "/api/cloud/play/cloud115") {
+		return nil, "", nil, ErrCloud115NotApplicable
+	}
+	accountID := strings.TrimSpace(u.Query().Get("acct"))
+	if accountID == "" {
+		return nil, "", nil, fmt.Errorf("缺少 115 账号 ID")
+	}
+	pickCode := strings.TrimSpace(u.Query().Get("pickcode"))
+	if pickCode == "" {
+		return nil, "", nil, fmt.Errorf("缺少 115 pickcode")
+	}
+	account, err := s.repo.StrmAccount.FindByID(ctx, accountID)
+	if err != nil {
+		return nil, "", nil, err
+	}
+	if account == nil || !account.Enabled {
+		return nil, "", nil, fmt.Errorf("115 账号不存在或已禁用")
+	}
+	if account.Provider != model.StrmProvider115 {
+		return nil, "", nil, ErrCloud115NotApplicable
+	}
+	provider, err := s.strm.providerFor(ctx, account)
+	if err != nil {
+		return nil, "", nil, err
+	}
+	openProvider, ok := provider.(cloud.OpenAPI115Provider)
+	if !ok || openProvider.OpenClient() == nil {
+		return nil, "", nil, ErrCloud115NotApplicable
+	}
+	return account, pickCode, openProvider.OpenClient(), nil
+}
+
+// MediaPlaybackProvider 返回媒体行的播放提供方（用于前端降级顺序）。
+func MediaPlaybackProvider(m *model.Media) string {
+	if m == nil {
+		return model.StrmProviderLocal
+	}
+	raw := strings.TrimSpace(m.STRMURL)
+	if raw == "" && strings.HasSuffix(strings.ToLower(strings.TrimSpace(m.Path)), ".strm") {
+		if target, err := readLocalSTRMTarget(m.Path); err == nil {
+			raw = strings.TrimSpace(target)
+		}
+	}
+	if raw != "" {
+		if u, err := url.Parse(raw); err == nil {
+			path := strings.ToLower(u.Path)
+			if idx := strings.Index(path, "/api/strm/play/"); idx >= 0 {
+				rest := strings.Trim(path[idx+len("/api/strm/play/"):], "/")
+				if provider, _, ok := strings.Cut(rest, "/"); ok && provider != "" {
+					return provider
+				}
+			}
+			if idx := strings.Index(path, "/api/cloud/play/"); idx >= 0 {
+				provider := strings.Trim(path[idx+len("/api/cloud/play/"):], "/")
+				if provider != "" {
+					return provider
+				}
+			}
+		}
+	}
+	if IsStrmMediaRow(m) {
+		return "strm"
+	}
+	return model.StrmProviderLocal
+}
+
+func findPlaybackQuality(options []PlaybackQuality, id string) (PlaybackQuality, bool) {
+	id = strings.TrimSpace(id)
+	for _, option := range options {
+		if option.ID == id {
+			return option, true
+		}
+	}
+	return PlaybackQuality{}, false
+}
+
+func findVideoURL(data *cloud115.VideoPlayData, definition int) *cloud115.VideoURLItem {
+	if data == nil || definition <= 0 {
+		return nil
+	}
+	for i := range data.VideoURL {
+		item := &data.VideoURL[i]
+		if item.DefinitionN == definition || item.Definition == definition {
+			return item
+		}
+	}
+	return nil
+}
+
+func cloud115PlayInfoFatal(resp *cloud115.RespBase, err error) bool {
+	if resp == nil {
+		return true
+	}
+	if bool(resp.State) {
+		return false
+	}
+	switch resp.Code {
+	case cloud115.AccessTokenAuthFail,
+		cloud115.AccessTokenExpiryCode,
+		cloud115.AccessAuthInvalid,
+		cloud115.AccessTokenFormatInvalid,
+		cloud115.RefreshTokenInvalid,
+		cloud115.TokenRefreshFail,
+		cloud115.RequestMaxLimitCode,
+		cloud115.RequestRateLimitCode:
+		return true
+	}
+	// 非鉴权/限流错误一律当作“尚未转码完成”处理，继续轮询。
+	_ = err
+	return false
+}
+
+func cloud115PlayErrorMessage(err error, resp *cloud115.RespBase) string {
+	if err != nil {
+		var apiErr *cloud115.OpenAPIError
+		if errors.As(err, &apiErr) {
+			switch apiErr.Code {
+			case cloud115.AccessTokenAuthFail,
+				cloud115.AccessTokenExpiryCode,
+				cloud115.AccessAuthInvalid,
+				cloud115.AccessTokenFormatInvalid,
+				cloud115.RefreshTokenInvalid:
+				return "115 授权已过期，请重新授权账号"
+			}
+			if strings.TrimSpace(apiErr.Message) != "" {
+				return apiErr.Message
+			}
+		}
+		return err.Error()
+	}
+	if resp != nil {
+		if msg := strings.TrimSpace(resp.Message); msg != "" {
+			return msg
+		}
+		if msg := strings.TrimSpace(resp.Error); msg != "" {
+			return msg
+		}
+	}
+	return "115 云端播放不可用"
+}

internal/service/cloud115_playback_test.go

@@ -0,0 +1,203 @@
+package service
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"sync/atomic"
+	"testing"
+
+	"go.uber.org/zap"
+
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
+	"github.com/truewhile/MeBox/internal/service/cloud115"
+)
+
+func TestCloud115PlaybackInfoTriggersTranscodeOnce(t *testing.T) {
+	var playCalls int32
+	var pushCalls int32
+	var ready int32
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/open/video/play":
+			atomic.AddInt32(&playCalls, 1)
+			if atomic.LoadInt32(&ready) == 0 {
+				_ = json.NewEncoder(w).Encode(map[string]any{
+					"state":   false,
+					"code":    0,
+					"message": "转码中",
+					"data":    map[string]any{},
+				})
+				return
+			}
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"state":   true,
+				"code":    0,
+				"message": "",
+				"data": map[string]any{
+					"file_name": "test.mkv",
+					"definition_list_new": map[string]string{
+						"4": "1080P",
+					},
+					"video_url": []map[string]any{
+						{
+							"url":          "http://cdn.example/master.m3u8",
+							"definition":   4,
+							"definition_n": 4,
+							"width":        1920,
+							"height":       1080,
+							"title":        "1080P",
+						},
+					},
+				},
+			})
+		case "/open/video/video_push":
+			atomic.AddInt32(&pushCalls, 1)
+			_ = json.NewEncoder(w).Encode(map[string]any{"state": true, "code": 0, "data": []any{}})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	oldBase := cloud115.ProAPIBase
+	cloud115.ProAPIBase = server.URL
+	defer func() { cloud115.ProAPIBase = oldBase }()
+
+	db := newServiceTestDB(t, &model.StrmAccount{}, &model.Media{})
+	repos := repository.New(db)
+	strm := NewStrmService(nil, zap.NewNop(), repos, NewCryptoService("test-secret", zap.NewNop()))
+	ctx := context.Background()
+	account, err := strm.CreateStrmAccount(ctx, "115", model.StrmProvider115, map[string]string{
+		"app_id":        "100195129",
+		"access_token":  "at",
+		"refresh_token": "rt",
+	})
+	if err != nil {
+		t.Fatalf("create account: %v", err)
+	}
+	media := &model.Media{
+		Base:      model.Base{ID: "media-1"},
+		Title:     "test",
+		Path:      "/media/test.strm",
+		Container: "strm",
+		Height:    1080,
+		STRMURL:   "/api/strm/play/cloud115/video.mkv?acct=" + account.ID + "&pickcode=pc",
+	}
+	if err := db.Create(media).Error; err != nil {
+		t.Fatalf("create media: %v", err)
+	}
+	svc := NewCloud115PlaybackService(nil, zap.NewNop(), repos, strm)
+
+	info, err := svc.PlaybackInfo(ctx, media.ID, 0)
+	if err != nil {
+		t.Fatalf("first playback info: %v", err)
+	}
+	if info.Provider != model.StrmProvider115 || info.DefaultQuality != "4" {
+		t.Fatalf("unexpected playback info: %#v", info)
+	}
+	if info.Transcode.State != "transcoding" {
+		t.Fatalf("transcode state = %q, want transcoding", info.Transcode.State)
+	}
+	if got := atomic.LoadInt32(&pushCalls); got != 1 {
+		t.Fatalf("push calls = %d, want 1", got)
+	}
+
+	if _, err := svc.PlaybackInfo(ctx, media.ID, 0); err != nil {
+		t.Fatalf("second playback info: %v", err)
+	}
+	if got := atomic.LoadInt32(&pushCalls); got != 1 {
+		t.Fatalf("push calls after polling = %d, want 1", got)
+	}
+
+	atomic.StoreInt32(&ready, 1)
+	info, err = svc.PlaybackInfo(ctx, media.ID, 0)
+	if err != nil {
+		t.Fatalf("ready playback info: %v", err)
+	}
+	if info.Transcode.State != "ready" {
+		t.Fatalf("transcode state = %q, want ready", info.Transcode.State)
+	}
+	url, _, err := svc.ResolveCloud115URL(ctx, media.ID, 4)
+	if err != nil {
+		t.Fatalf("resolve cloud url: %v", err)
+	}
+	if url != "http://cdn.example/master.m3u8" {
+		t.Fatalf("url = %q", url)
+	}
+	if got := atomic.LoadInt32(&playCalls); got < 3 {
+		t.Fatalf("play calls = %d, want >= 3", got)
+	}
+}
+
+func TestCloud115PlaybackInfoTranscodePendingBeforeReady(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/open/video/play":
+			_ = json.NewEncoder(w).Encode(map[string]any{"state": false, "code": 0, "message": "转码中", "data": map[string]any{}})
+		case "/open/video/video_push":
+			_ = json.NewEncoder(w).Encode(map[string]any{"state": true, "code": 0, "data": []any{}})
+		}
+	}))
+	defer server.Close()
+	oldBase := cloud115.ProAPIBase
+	cloud115.ProAPIBase = server.URL
+	defer func() { cloud115.ProAPIBase = oldBase }()
+
+	db := newServiceTestDB(t, &model.StrmAccount{}, &model.Media{})
+	repos := repository.New(db)
+	strm := NewStrmService(nil, zap.NewNop(), repos, NewCryptoService("test-secret", zap.NewNop()))
+	ctx := context.Background()
+	account, err := strm.CreateStrmAccount(ctx, "115", model.StrmProvider115, map[string]string{
+		"app_id":        "100195129",
+		"access_token":  "at",
+		"refresh_token": "rt",
+	})
+	if err != nil {
+		t.Fatalf("create account: %v", err)
+	}
+	media := &model.Media{
+		Base:      model.Base{ID: "media-2"},
+		Title:     "test",
+		Path:      "/media/test2.strm",
+		Container: "strm",
+		Height:    1080,
+		STRMURL:   "/api/strm/play/cloud115/video.mkv?acct=" + account.ID + "&pickcode=pc2",
+	}
+	if err := db.Create(media).Error; err != nil {
+		t.Fatalf("create media: %v", err)
+	}
+	svc := NewCloud115PlaybackService(nil, zap.NewNop(), repos, strm)
+	if _, _, err := svc.ResolveCloud115URL(ctx, media.ID, 4); !errors.Is(err, ErrCloud115TranscodePending) {
+		t.Fatalf("resolve pending err = %v, want ErrCloud115TranscodePending", err)
+	}
+}
+
+func TestMediaPlaybackProvider(t *testing.T) {
+	cases := []struct {
+		name string
+		raw  string
+		want string
+	}{
+		{"115", "/api/strm/play/cloud115/video.mkv?acct=1&pickcode=pc", model.StrmProvider115},
+		{"openlist", "/api/strm/play/openlist/video.mkv?acct=1&ref=/a.mkv", model.StrmProviderOpenList},
+		{"local", "/media/local.mkv", model.StrmProviderLocal},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			media := &model.Media{Path: tc.raw}
+			if tc.name != "local" {
+				media.STRMURL = tc.raw
+			}
+			got := MediaPlaybackProvider(media)
+			if got != tc.want {
+				t.Fatalf("provider = %q, want %q", got, tc.want)
+			}
+		})
+	}
+}

internal/service/danmaku_service.go

@@ -49,6 +49,12 @@ const (
 // dandanplay protocol (search/episodes + comment/{episodeId}) may be used.
 const DanmakuDefaultSource = "https://api.dandanplay.net"
 
+const (
+	minPlayerPlaybackRate     = 0.5
+	maxPlayerPlaybackRate     = 3.0
+	defaultPlayerPlaybackRate = 1.0
+)
+
 // danmakuOfficialBase is where identification (/api/v2/match) and the
 // comment/search fallback always go, regardless of the configured source.
 // A package var (not a const) so tests can point it at a local server.
@@ -63,6 +69,8 @@ type DanmakuRenderConfig struct {
 	FontSize string  `json:"font_size"`
 	Area     string  `json:"area"`
 	Volume   float64 `json:"volume"`
+	// PlaybackRate 是当前用户的播放倍速偏好（按用户存储）。
+	PlaybackRate float64 `json:"playback_rate"`
 	// MergeSources 是当前用户的弹幕合并偏好（按用户存储）。
 	MergeSources bool `json:"merge_sources"`
 	// AppKeyConfigured 只表明用户是否保存了应用密钥，不回传密钥明文。
@@ -89,6 +97,7 @@ type DanmakuSettingsPatch struct {
 	Area         *float64 `json:"area"`
 	MergeSources *bool    `json:"merge_sources"`
 	Volume       *float64 `json:"volume"`
+	PlaybackRate *float64 `json:"playback_rate"`
 }
 
 type danmakuUserContextKey struct{}
@@ -345,10 +354,11 @@ func cloneDanmakuAnimeList(in []DanmakuAnime) []DanmakuAnime {
 // Config reads danmaku settings from the runtime settings table.
 func (s *DanmakuService) Config(ctx context.Context) DanmakuRenderConfig {
 	cfg := DanmakuRenderConfig{
-		Opacity:  "1",
-		FontSize: "24",
-		Area:     "1",
-		Volume:   1,
+		Opacity:      "1",
+		FontSize:     "24",
+		Area:         "1",
+		Volume:       1,
+		PlaybackRate: defaultPlayerPlaybackRate,
 	}
 	if s == nil || s.repo == nil || s.repo.Setting == nil {
 		return cfg
@@ -399,7 +409,14 @@ func (s *DanmakuService) findUser(ctx context.Context, userID string) (*model.Us
 
 func danmakuConfigFromUser(user *model.User) DanmakuRenderConfig {
 	if user == nil {
-		return DanmakuRenderConfig{Enabled: true, Opacity: "1", FontSize: "24", Area: "1", Volume: 1}
+		return DanmakuRenderConfig{
+			Enabled:      true,
+			Opacity:      "1",
+			FontSize:     "24",
+			Area:         "1",
+			Volume:       1,
+			PlaybackRate: defaultPlayerPlaybackRate,
+		}
 	}
 	opacity := user.DanmakuOpacity
 	if opacity < 0.1 || opacity > 1 {
@@ -417,6 +434,10 @@ func danmakuConfigFromUser(user *model.User) DanmakuRenderConfig {
 	if volume < 0 || volume > 1 {
 		volume = 1
 	}
+	playbackRate := user.PlayerPlaybackRate
+	if playbackRate < minPlayerPlaybackRate || playbackRate > maxPlayerPlaybackRate {
+		playbackRate = defaultPlayerPlaybackRate
+	}
 	return DanmakuRenderConfig{
 		Enabled:          user.DanmakuEnabled,
 		Source:           strings.TrimSpace(user.DanmakuSource),
@@ -425,6 +446,7 @@ func danmakuConfigFromUser(user *model.User) DanmakuRenderConfig {
 		FontSize:         strconv.Itoa(fontSize),
 		Area:             strconv.FormatFloat(area, 'f', -1, 64),
 		Volume:           volume,
+		PlaybackRate:     playbackRate,
 		MergeSources:     user.DanmakuMergeSources,
 		AppKeyConfigured: strings.TrimSpace(user.DanmakuAppKey) != "",
 	}
@@ -495,6 +517,17 @@ func (s *DanmakuService) UpdateUserSettings(ctx context.Context, userID string,
 		}
 		updates["player_volume"] = *patch.Volume
 	}
+	if patch.PlaybackRate != nil {
+		if *patch.PlaybackRate < minPlayerPlaybackRate || *patch.PlaybackRate > maxPlayerPlaybackRate {
+			return DanmakuRenderConfig{}, fmt.Errorf(
+				"%w: playback_rate must be between %.2f and %.2f",
+				ErrInvalidDanmakuSettings,
+				minPlayerPlaybackRate,
+				maxPlayerPlaybackRate,
+			)
+		}
+		updates["player_playback_rate"] = *patch.PlaybackRate
+	}
 	if len(updates) == 0 {
 		return DanmakuRenderConfig{}, ErrNoDanmakuSettings
 	}

internal/service/danmaku_service_test.go

@@ -422,6 +422,7 @@ func TestDanmakuFetchUsesPerUserSourceAndCredentials(t *testing.T) {
 	user.DanmakuFontSize = 30
 	user.DanmakuArea = 0.7
 	user.PlayerVolume = 0.42
+	user.PlayerPlaybackRate = 1.25
 	require.NoError(t, svc.repo.User.Create(ctx, &user))
 	seedDanmakuMedia(t, svc, "per-user-media", "测试动画", "", 0)
 
@@ -430,6 +431,7 @@ func TestDanmakuFetchUsesPerUserSourceAndCredentials(t *testing.T) {
 	require.Contains(t, res.Raw, "弹幕A")
 	require.Equal(t, srv.URL(), res.Source)
 	require.Equal(t, 0.42, res.Volume)
+	require.Equal(t, 1.25, res.PlaybackRate)
 	require.Equal(t, "0.65", res.Opacity)
 	require.Equal(t, "30", res.FontSize)
 	require.Equal(t, srv.lastHeaders.Get("X-AppId"), "user-app-id")

internal/service/emby_items_detail.go

@@ -218,7 +218,7 @@ func (e *EmbyService) loadLatestItems(ctx context.Context, userID, parentID stri
 		if mount == nil || acct == nil || !EmbyMountLibraryAllowed(e.mediaVisibility(ctx, userID), mount) {
 			return embyLatestCacheValue{Items: []map[string]any{}}, nil
 		}
-		out, err := e.remote.RemoteLatest(ctx, mount, acct, remoteParent, limit)
+		out, err := e.remote.RemoteLatestForDisplay(ctx, mount, acct, remoteParent, limit)
 		if err != nil {
 			return embyLatestCacheValue{}, err
 		}

internal/service/emby_remote.go

@@ -860,6 +860,162 @@ func (r *EmbyRemoteService) RemoteLatest(ctx context.Context, mount *model.EmbyM
 	return out, nil
 }
 
+// RemoteLatestForDisplay 返回可直接展示的最新媒体条目。剧集库优先取 Series；
+// 远程 Latest 只返回 Episode 时，按 SeriesId 归并，避免调用方拿到单集 ID
+// 后无法在 Series 卡片列表中找到对应条目。
+func (r *EmbyRemoteService) RemoteLatestForDisplay(ctx context.Context, mount *model.EmbyMount, acct *model.StrmAccount, remoteViewID string, limit int) ([]map[string]any, error) {
+	if remoteCollectionLooksEpisodic(mount.CollectionType) {
+		return r.RemoteLatestSeries(ctx, mount, acct, remoteViewID, limit)
+	}
+	items, err := r.RemoteLatest(ctx, mount, acct, remoteViewID, limit)
+	if err != nil {
+		return nil, err
+	}
+	if remoteItemsContainEpisodes(items) {
+		return remoteSeriesItemsFromLatest(mount, items, limit), nil
+	}
+	return items, nil
+}
+
+// RemoteLatestSeries 拉取剧集库最近更新的 Series。部分 Emby 服务不支持
+// DateLastContentAdded 或过滤 Series，此时回退到 Latest 并把 Episode 归并到
+// 对应 Series。
+func (r *EmbyRemoteService) RemoteLatestSeries(ctx context.Context, mount *model.EmbyMount, acct *model.StrmAccount, remoteViewID string, limit int) ([]map[string]any, error) {
+	if limit <= 0 || limit > 100 {
+		limit = 20
+	}
+	cfg, err := r.remoteConfigWithToken(ctx, acct)
+	if err != nil {
+		return nil, err
+	}
+	q := url.Values{}
+	q.Set("ParentId", remoteViewID)
+	q.Set("IncludeItemTypes", "Series")
+	q.Set("Recursive", "false")
+	q.Set("SortBy", "DateLastContentAdded")
+	q.Set("SortOrder", "Descending")
+	q.Set("Limit", strconv.Itoa(limit))
+	q.Set("Fields", "Overview,Genres,ProviderIds,Path,RecursiveItemCount,SeriesPrimaryImage,DateCreated,DateLastMediaAdded,PremiereDate,ProductionYear,CommunityRating,CriticRating")
+	var body struct {
+		Items []map[string]any `json:"Items"`
+	}
+	if err := r.doGet(ctx, acct, cfg, "/Users/"+url.PathEscape(r.remoteUserID(cfg))+"/Items", q, &body); err == nil && len(body.Items) > 0 {
+		RewriteEmbyRemoteIDs(body.Items, mount.ID)
+		return body.Items, nil
+	}
+
+	items, err := r.RemoteLatest(ctx, mount, acct, remoteViewID, limit)
+	if err != nil {
+		return nil, err
+	}
+	return remoteSeriesItemsFromLatest(mount, items, limit), nil
+}
+
+func remoteCollectionLooksEpisodic(collectionType string) bool {
+	switch strings.ToLower(strings.TrimSpace(collectionType)) {
+	case "tvshows", "tv":
+		return true
+	default:
+		return false
+	}
+}
+
+func remoteItemsContainEpisodes(items []map[string]any) bool {
+	for _, item := range items {
+		if strings.EqualFold(strings.TrimSpace(remoteItemString(item, "Type")), "Episode") {
+			return true
+		}
+	}
+	return false
+}
+
+func remoteSeriesItemsFromLatest(mount *model.EmbyMount, items []map[string]any, limit int) []map[string]any {
+	if limit <= 0 || limit > 100 {
+		limit = 20
+	}
+	out := make([]map[string]any, 0, len(items))
+	seen := make(map[string]struct{}, len(items))
+	for _, item := range items {
+		if len(out) >= limit {
+			break
+		}
+		if !strings.EqualFold(strings.TrimSpace(remoteItemString(item, "Type")), "Episode") {
+			id := strings.TrimSpace(remoteItemString(item, "Id"))
+			if id == "" {
+				continue
+			}
+			if _, exists := seen[id]; exists {
+				continue
+			}
+			seen[id] = struct{}{}
+			out = append(out, item)
+			continue
+		}
+
+		seriesID := remoteItemSeriesID(item, mount)
+		if seriesID == "" {
+			continue
+		}
+		if _, exists := seen[seriesID]; exists {
+			continue
+		}
+		seen[seriesID] = struct{}{}
+		out = append(out, remoteSeriesPayloadFromEpisode(mount, item, seriesID))
+	}
+	return out
+}
+
+func remoteItemSeriesID(item map[string]any, mount *model.EmbyMount) string {
+	seriesID := strings.TrimSpace(remoteItemString(item, "SeriesId"))
+	if seriesID == "" {
+		return ""
+	}
+	if _, rawID, ok := DecodeEmbyRemoteID(seriesID); ok {
+		if mount == nil {
+			return rawID
+		}
+		return EncodeEmbyRemoteID(mount.ID, rawID)
+	}
+	if mount == nil {
+		return seriesID
+	}
+	return EncodeEmbyRemoteID(mount.ID, seriesID)
+}
+
+func remoteSeriesPayloadFromEpisode(mount *model.EmbyMount, episode map[string]any, seriesID string) map[string]any {
+	name := strings.TrimSpace(remoteItemString(episode, "SeriesName"))
+	if name == "" {
+		name = strings.TrimSpace(remoteItemString(episode, "Name"))
+	}
+	out := map[string]any{
+		"Id":   seriesID,
+		"Name": name,
+		"Type": "Series",
+	}
+	if mount != nil && strings.TrimSpace(mount.RemoteViewID) != "" {
+		out["ParentId"] = EncodeEmbyRemoteID(mount.ID, mount.RemoteViewID)
+	}
+	if tag := strings.TrimSpace(remoteItemString(episode, "SeriesPrimaryImageTag")); tag != "" {
+		out["ImageTags"] = map[string]any{"Primary": tag}
+	}
+	year := remoteItemInt(episode, "SeriesProductionYear")
+	if year == 0 {
+		year = remoteItemInt(episode, "SeriesYear")
+	}
+	if year == 0 {
+		year = remoteItemInt(episode, "ProductionYear")
+	}
+	if year > 0 {
+		out["ProductionYear"] = year
+	}
+	for _, key := range []string{"Genres", "ProviderIds", "DateLastMediaAdded", "CommunityRating", "CriticRating", "OfficialRating"} {
+		if value, ok := episode[key]; ok {
+			out[key] = value
+		}
+	}
+	return out
+}
+
 // RemotePlaybackInfo 拉取远程 PlaybackInfo，并按挂载的 proxy_play 配置重写
 // 播放 URL：不代理=指向远程绝对地址（播放字节不过 MeBox）；代理=指向 MeBox
 // 本地 /Videos/{encodedID} 端点（由 ProxyVideoStream 反代）。

internal/service/emby_remote_web.go

@@ -180,31 +180,31 @@ func (r *EmbyRemoteService) MapRemoteItemToMedia(ctx context.Context, mount *mod
 	if _, rid, ok := DecodeEmbyRemoteID(seriesID); ok {
 		seriesID = rid
 	}
-		rating := remoteItemFloat(item, "CommunityRating")
-		if rating == 0 {
-			rating = remoteItemFloat(item, "CriticRating")
-		}
-		year := remoteItemInt(item, "ProductionYear")
-		if year == 0 {
-			year = remoteItemInt(item, "Year")
-		}
-		if year == 0 {
-			year = remoteItemInt(item, "SeriesProductionYear")
-		}
-		if year == 0 {
-			year = remoteItemInt(item, "SeriesYear")
-		}
-		media := model.Media{
-			Base:         model.Base{ID: EncodeEmbyRemoteID(encodeScope, remoteID)},
-			Title:        remoteItemString(item, "Name"),
-			OriginalName: remoteItemString(item, "OriginalTitle"),
-			Overview:     remoteItemString(item, "Overview"),
-			Year:         year,
-			Rating:       float32(rating),
-			Path:         remoteItemString(item, "Path"),
-			Genres:       remoteItemGenres(item),
-			ScrapeStatus: "done",
-		}
+	rating := remoteItemFloat(item, "CommunityRating")
+	if rating == 0 {
+		rating = remoteItemFloat(item, "CriticRating")
+	}
+	year := remoteItemInt(item, "ProductionYear")
+	if year == 0 {
+		year = remoteItemInt(item, "Year")
+	}
+	if year == 0 {
+		year = remoteItemInt(item, "SeriesProductionYear")
+	}
+	if year == 0 {
+		year = remoteItemInt(item, "SeriesYear")
+	}
+	media := model.Media{
+		Base:         model.Base{ID: EncodeEmbyRemoteID(encodeScope, remoteID)},
+		Title:        remoteItemString(item, "Name"),
+		OriginalName: remoteItemString(item, "OriginalTitle"),
+		Overview:     remoteItemString(item, "Overview"),
+		Year:         year,
+		Rating:       float32(rating),
+		Path:         remoteItemString(item, "Path"),
+		Genres:       remoteItemGenres(item),
+		ScrapeStatus: "done",
+	}
 	if date, ok := parseEmbyRemoteDate(remoteItemString(item, "DateCreated")); ok {
 		media.CreatedAt = date
 		media.UpdatedAt = date
@@ -509,6 +509,11 @@ func (r *EmbyRemoteService) remoteEpisodesOf(ctx context.Context, mount *model.E
 	return items, total, nil
 }
 
+// remoteSeriesPageSize 是远程剧集分页拉取的每页条数：Fields 带 Overview/Path
+// 等重字段，单页 1000 条时载荷会超过 doGet 的 8MB 截断上限，JSON 被静默截断
+// 直接解析失败，因此按 200 条翻页拉全量。
+const remoteSeriesPageSize = 200
+
 // RemoteSeriesCards 远程剧集库的系列卡片（ChildCount 作为集数）。
 //
 // 远程 Emby 的 Series DTO 不会返回 DateLastMediaAdded 字段（即使请求 Fields
@@ -532,16 +537,14 @@ func (r *EmbyRemoteService) RemoteSeriesCards(ctx context.Context, mount *model.
 	q.Set("Recursive", "false")
 	q.Set("SortBy", "DateLastContentAdded")
 	q.Set("SortOrder", "Descending")
-	// 每页 200：Fields 带全量重字段（Overview/MediaStreams 等）时单页 1000
-	// 条的载荷会超过 doGet 的 8MB 截断上限，JSON 被静默截断直接解析失败。
-	q.Set("Limit", "200")
+	q.Set("Limit", strconv.Itoa(remoteSeriesPageSize))
 	q.Set("Fields", "Overview,Genres,ProviderIds,Path,RecursiveItemCount,SeriesPrimaryImage,DateCreated,DateLastMediaAdded,PremiereDate,ProductionYear,CommunityRating,CriticRating")
 	var body struct {
 		Items            []map[string]any `json:"Items"`
 		TotalRecordCount int64            `json:"TotalRecordCount"`
 	}
 	cards := make([]SeriesCard, 0)
-	for startIndex := 0; ; startIndex += 200 {
+	for startIndex := 0; ; startIndex += remoteSeriesPageSize {
 		q.Set("StartIndex", strconv.Itoa(startIndex))
 		body.Items = nil
 		if err := r.doGet(ctx, acct, cfg, "/Users/"+url.PathEscape(r.remoteUserID(cfg))+"/Items", q, &body); err != nil {
@@ -565,9 +568,16 @@ func (r *EmbyRemoteService) RemoteSeriesCards(ctx context.Context, mount *model.
 			if date, ok := parseEmbyRemoteDate(remoteItemString(it, "DateLastMediaAdded")); ok {
 				lastAdded = &date
 			}
-			cards = append(cards, SeriesCard{Key: m.ID, Rep: m, LinkMedia: m, Count: count, LastAddedAt: lastAdded})
+			cards = append(cards, SeriesCard{
+				Key:         m.ID,
+				Rep:         m,
+				LinkMedia:   m,
+				Count:       count,
+				IsSeries:    true,
+				LastAddedAt: lastAdded,
+			})
 		}
-		if int64(len(cards)) >= body.TotalRecordCount || len(body.Items) < 1000 {
+		if int64(len(cards)) >= body.TotalRecordCount || len(body.Items) < remoteSeriesPageSize {
 			break
 		}
 	}
@@ -589,52 +599,14 @@ func (r *EmbyRemoteService) RemoteLatestCards(ctx context.Context, mount *model.
 		return cached, nil
 	}
 
-	// 剧集类媒体库：直接拉取最新入库/更新的 Series 剧集本身（按上次添加集日期倒序）。
-	// 避免 Emby /Items/Latest 默认返回无年份/无系列海报的单集（Episode）。
-	if mount != nil && (mount.CollectionType == "tvshows" || mount.CollectionType == "tv") {
-		q := url.Values{}
-		q.Set("ParentId", remoteViewID)
-		q.Set("IncludeItemTypes", "Series")
-		q.Set("Recursive", "false")
-		q.Set("SortBy", "DateLastContentAdded")
-		q.Set("SortOrder", "Descending")
-		q.Set("Limit", strconv.Itoa(limit))
-		q.Set("Fields", "Overview,Genres,ProviderIds,Path,RecursiveItemCount,SeriesPrimaryImage,DateCreated,DateLastMediaAdded,PremiereDate,ProductionYear,CommunityRating,CriticRating")
-		var body struct {
-			Items []map[string]any `json:"Items"`
-		}
-		if err := r.doGet(ctx, acct, cfg, "/Users/"+url.PathEscape(r.remoteUserID(cfg))+"/Items", q, &body); err == nil && len(body.Items) > 0 {
-			cards := make([]SeriesCard, 0, len(body.Items))
-			for _, it := range body.Items {
-				RewriteEmbyRemoteIDs(it, mount.ID)
-				m := r.MapRemoteItemToMedia(ctx, mount, acct, cfg, it)
-				count := remoteItemInt(it, "RecursiveItemCount")
-				if count == 0 {
-					count = remoteItemInt(it, "ChildCount")
-				}
-				if count == 0 {
-					count = 1
-				}
-				var lastAdded *time.Time
-				if date, ok := parseEmbyRemoteDate(remoteItemString(it, "DateLastMediaAdded")); ok {
-					lastAdded = &date
-				}
-				cards = append(cards, SeriesCard{Key: m.ID, Rep: m, LinkMedia: m, Count: count, LastAddedAt: lastAdded})
-			}
-			if r.cache != nil {
-				r.cache.SetJSON(ctx, cacheKey, cards, r.remoteMediaCacheTTL())
-			}
-			return cards, nil
-		}
-	}
-
-	items, err := r.RemoteLatest(ctx, mount, acct, remoteViewID, limit)
+	items, err := r.RemoteLatestForDisplay(ctx, mount, acct, remoteViewID, limit)
 	if err != nil {
 		return nil, err
 	}
 	cards := make([]SeriesCard, 0, len(items))
 	for _, it := range items {
 		m := r.MapRemoteItemToMedia(ctx, mount, acct, cfg, it)
+		isSeries := strings.EqualFold(strings.TrimSpace(remoteItemString(it, "Type")), "Series")
 		var lastAdded *time.Time
 		if !m.UpdatedAt.IsZero() {
 			t := m.UpdatedAt
@@ -647,7 +619,17 @@ func (r *EmbyRemoteService) RemoteLatestCards(ctx context.Context, mount *model.
 		if count == 0 {
 			count = remoteItemInt(it, "ChildCount")
 		}
-		cards = append(cards, SeriesCard{Key: m.ID, Rep: m, LinkMedia: m, Count: count, LastAddedAt: lastAdded})
+		if count == 0 {
+			count = 1
+		}
+		cards = append(cards, SeriesCard{
+			Key:         m.ID,
+			Rep:         m,
+			LinkMedia:   m,
+			Count:       count,
+			IsSeries:    isSeries,
+			LastAddedAt: lastAdded,
+		})
 	}
 	if r.cache != nil {
 		r.cache.SetJSON(ctx, cacheKey, cards, r.remoteMediaCacheTTL())

internal/service/emby_remote_web_test.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
+	"strconv"
 	"strings"
 	"sync/atomic"
 	"testing"
@@ -465,6 +466,9 @@ func TestRemoteLatestCardsTvShowsYearAndPoster(t *testing.T) {
 	if cards[0].Count != 12 {
 		t.Fatalf("expected Count 12, got %d", cards[0].Count)
 	}
+	if !cards[0].IsSeries {
+		t.Fatalf("expected remote latest card to be marked as series")
+	}
 	if cards[0].Rep.PosterURL == "" {
 		t.Fatalf("expected PosterURL not empty")
 	}
@@ -476,6 +480,348 @@ func TestRemoteLatestCardsTvShowsYearAndPoster(t *testing.T) {
 	}
 }
 
+func TestRemoteLatestCardsTvShowsGroupsEpisodeFallbackBySeries(t *testing.T) {
+	var seriesQueryCalled atomic.Bool
+	var latestCalled atomic.Bool
+	var requestedSeriesType atomic.Value
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch strings.TrimPrefix(r.URL.Path, "/emby") {
+		case "/Users/remote-user/Items":
+			seriesQueryCalled.Store(true)
+			requestedSeriesType.Store(r.URL.Query().Get("IncludeItemTypes"))
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"Items":            []map[string]any{},
+				"TotalRecordCount": 0,
+			})
+		case "/Users/remote-user/Items/Latest":
+			latestCalled.Store(true)
+			_ = json.NewEncoder(w).Encode([]map[string]any{
+				{
+					"Id":                    "episode-2",
+					"Name":                  "第二集",
+					"Type":                  "Episode",
+					"SeriesId":              "series-b",
+					"SeriesName":            "剧集 B",
+					"SeriesProductionYear":  2025,
+					"SeriesPrimaryImageTag": "poster-b",
+				},
+				{
+					"Id":                   "episode-1",
+					"Name":                 "第一集",
+					"Type":                 "Episode",
+					"SeriesId":             "series-a",
+					"SeriesName":           "剧集 A",
+					"SeriesProductionYear": 2024,
+				},
+				{
+					"Id":         "episode-1b",
+					"Name":       "第一集下",
+					"Type":       "Episode",
+					"SeriesId":   "series-a",
+					"SeriesName": "剧集 A",
+				},
+			})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	db := newServiceTestDB(t, &model.StrmAccount{}, &model.EmbyMount{})
+	repos := repository.New(db)
+	svc := NewEmbyRemoteService(&config.Config{}, zap.NewNop(), repos, NewCryptoService("", zap.NewNop()))
+
+	rawConfig, _ := json.Marshal(map[string]string{
+		"url":            server.URL,
+		"token":          "fake-token",
+		"remote_user_id": "remote-user",
+	})
+	acct := &model.StrmAccount{
+		Base:     model.Base{ID: "acct-tv-fallback"},
+		Name:     "tv-emby",
+		Provider: model.StrmProviderEmbyRemote,
+		Config:   string(rawConfig),
+		Enabled:  true,
+	}
+	if err := repos.StrmAccount.Create(t.Context(), acct); err != nil {
+		t.Fatalf("create account: %v", err)
+	}
+	mount := &model.EmbyMount{
+		Base:           model.Base{ID: "mount-tv-fallback"},
+		AccountID:      acct.ID,
+		RemoteViewID:   "view-tv",
+		RemoteViewName: "剧集库",
+		CollectionType: "tvshows",
+		Enabled:        true,
+	}
+	if err := repos.EmbyMount.Create(t.Context(), mount); err != nil {
+		t.Fatalf("create mount: %v", err)
+	}
+
+	cards, err := svc.RemoteLatestCards(t.Context(), mount, acct, mount.RemoteViewID, 10)
+	if err != nil {
+		t.Fatalf("RemoteLatestCards failed: %v", err)
+	}
+	if !seriesQueryCalled.Load() || !latestCalled.Load() {
+		t.Fatalf("expected both Series query and Latest fallback, series=%v latest=%v", seriesQueryCalled.Load(), latestCalled.Load())
+	}
+	if got, _ := requestedSeriesType.Load().(string); got != "Series" {
+		t.Fatalf("series query IncludeItemTypes = %q, want Series", got)
+	}
+	if len(cards) != 2 {
+		t.Fatalf("expected 2 deduplicated series cards, got %d: %#v", len(cards), cards)
+	}
+	wantKeys := []string{
+		EncodeEmbyRemoteID(mount.ID, "series-b"),
+		EncodeEmbyRemoteID(mount.ID, "series-a"),
+	}
+	for i, want := range wantKeys {
+		if cards[i].Key != want {
+			t.Fatalf("card[%d].Key = %q, want %q", i, cards[i].Key, want)
+		}
+		if !cards[i].IsSeries {
+			t.Fatalf("card[%d] should be marked as series", i)
+		}
+	}
+}
+
+func TestEmbyLatestItemsRemoteTvShowsUseSeriesIDs(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch strings.TrimPrefix(r.URL.Path, "/emby") {
+		case "/Users/remote-user/Items":
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"Items":            []map[string]any{},
+				"TotalRecordCount": 0,
+			})
+		case "/Users/remote-user/Items/Latest":
+			_ = json.NewEncoder(w).Encode([]map[string]any{
+				{
+					"Id":         "episode-10",
+					"Name":       "第十集",
+					"Type":       "Episode",
+					"SeriesId":   "series-10",
+					"SeriesName": "远程剧集",
+				},
+			})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	db := newServiceTestDB(t,
+		&model.Setting{},
+		&model.User{},
+		&model.Favorite{},
+		&model.PlaybackHistory{},
+		&model.StrmAccount{},
+		&model.EmbyMount{},
+	)
+	repos := repository.New(db)
+	remoteSvc := NewEmbyRemoteService(&config.Config{}, zap.NewNop(), repos, NewCryptoService("", zap.NewNop()))
+	svc := NewEmbyService(&config.Config{}, zap.NewNop(), repos).SetEmbyRemote(remoteSvc)
+
+	rawConfig, _ := json.Marshal(map[string]string{
+		"url":            server.URL,
+		"token":          "fake-token",
+		"remote_user_id": "remote-user",
+	})
+	acct := &model.StrmAccount{
+		Base:     model.Base{ID: "acct-emby-latest"},
+		Name:     "tv-emby",
+		Provider: model.StrmProviderEmbyRemote,
+		Config:   string(rawConfig),
+		Enabled:  true,
+	}
+	if err := repos.StrmAccount.Create(t.Context(), acct); err != nil {
+		t.Fatalf("create account: %v", err)
+	}
+	mount := &model.EmbyMount{
+		Base:           model.Base{ID: "mount-emby-latest"},
+		AccountID:      acct.ID,
+		RemoteViewID:   "view-tv",
+		RemoteViewName: "剧集库",
+		CollectionType: "tvshows",
+		Enabled:        true,
+	}
+	if err := repos.EmbyMount.Create(t.Context(), mount); err != nil {
+		t.Fatalf("create mount: %v", err)
+	}
+
+	items, err := svc.LatestItems(t.Context(), "user-1", EncodeEmbyRemoteID(mount.ID, mount.RemoteViewID), 10)
+	if err != nil {
+		t.Fatalf("LatestItems failed: %v", err)
+	}
+	if len(items) != 1 {
+		t.Fatalf("expected 1 series item, got %d: %#v", len(items), items)
+	}
+	if items[0]["Type"] != "Series" {
+		t.Fatalf("latest item Type = %#v, want Series", items[0]["Type"])
+	}
+	wantID := EncodeEmbyRemoteID(mount.ID, "series-10")
+	if items[0]["Id"] != wantID {
+		t.Fatalf("latest item Id = %#v, want %q", items[0]["Id"], wantID)
+	}
+}
+
+// 远程剧集库分页拉全量：超过一页时必须继续翻页，否则第 201 条之后的剧集
+// 既不会出现在媒体库列表里，首页深链过来的 ?series= 也无从命中。
+func TestRemoteSeriesCardsFetchAllPages(t *testing.T) {
+	const totalSeries = remoteSeriesPageSize*2 + 50
+	var requests atomic.Int32
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		query := r.URL.Query()
+		startIndex, _ := strconv.Atoi(query.Get("StartIndex"))
+		limit, _ := strconv.Atoi(query.Get("Limit"))
+		requests.Add(1)
+		items := make([]map[string]any, 0, limit)
+		for i := startIndex; i < totalSeries && len(items) < limit; i++ {
+			items = append(items, map[string]any{
+				"Id":                 "series-" + strconv.Itoa(i),
+				"Name":               "剧集 " + strconv.Itoa(i),
+				"Type":               "Series",
+				"RecursiveItemCount": 12,
+			})
+		}
+		_ = json.NewEncoder(w).Encode(map[string]any{
+			"Items":            items,
+			"TotalRecordCount": totalSeries,
+		})
+	}))
+	defer server.Close()
+
+	db := newServiceTestDB(t, &model.StrmAccount{}, &model.EmbyMount{})
+	repos := repository.New(db)
+	svc := NewEmbyRemoteService(&config.Config{}, zap.NewNop(), repos, NewCryptoService("", zap.NewNop()))
+
+	rawConfig, _ := json.Marshal(map[string]string{
+		"url":            server.URL,
+		"token":          "fake-token",
+		"remote_user_id": "remote-user",
+	})
+	acct := &model.StrmAccount{
+		Base:     model.Base{ID: "acct-series-pages"},
+		Name:     "tv-emby",
+		Provider: model.StrmProviderEmbyRemote,
+		Config:   string(rawConfig),
+		Enabled:  true,
+	}
+	if err := repos.StrmAccount.Create(t.Context(), acct); err != nil {
+		t.Fatalf("create account: %v", err)
+	}
+	mount := &model.EmbyMount{
+		Base:           model.Base{ID: "mount-series-pages"},
+		AccountID:      acct.ID,
+		RemoteViewID:   "view-tv",
+		RemoteViewName: "电视剧",
+		CollectionType: "tvshows",
+		Enabled:        true,
+	}
+	if err := repos.EmbyMount.Create(t.Context(), mount); err != nil {
+		t.Fatalf("create mount: %v", err)
+	}
+
+	cards, err := svc.RemoteSeriesCards(t.Context(), mount, acct, mount.RemoteViewID)
+	if err != nil {
+		t.Fatalf("RemoteSeriesCards failed: %v", err)
+	}
+	if len(cards) != totalSeries {
+		t.Fatalf("expected all %d series, got %d", totalSeries, len(cards))
+	}
+	if got := requests.Load(); got != 3 {
+		t.Fatalf("expected 3 paged requests, got %d", got)
+	}
+	lastKey := EncodeEmbyRemoteID(mount.ID, "series-"+strconv.Itoa(totalSeries-1))
+	if cards[len(cards)-1].Key != lastKey {
+		t.Fatalf("last card key = %q, want %q", cards[len(cards)-1].Key, lastKey)
+	}
+}
+
+// 首页「最新条目」卡片 key 必须与媒体库剧集列表的 key 一致，否则点击后
+// 媒体库页找不到目标剧集，只能退回整库列表。
+func TestRemoteLatestCardsKeyMatchesSeriesList(t *testing.T) {
+	var seriesQueryCalls atomic.Int32
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		if strings.TrimPrefix(r.URL.Path, "/emby") != "/Users/remote-user/Items" {
+			http.NotFound(w, r)
+			return
+		}
+		seriesQueryCalls.Add(1)
+		_ = json.NewEncoder(w).Encode(map[string]any{
+			"Items": []map[string]any{
+				{
+					"Id":                 "series-latest",
+					"Name":               "刚刚更新",
+					"Type":               "Series",
+					"RecursiveItemCount": 24,
+				},
+			},
+			"TotalRecordCount": 1,
+		})
+	}))
+	defer server.Close()
+
+	db := newServiceTestDB(t, &model.StrmAccount{}, &model.EmbyMount{})
+	repos := repository.New(db)
+	svc := NewEmbyRemoteService(&config.Config{}, zap.NewNop(), repos, NewCryptoService("", zap.NewNop()))
+
+	rawConfig, _ := json.Marshal(map[string]string{
+		"url":            server.URL,
+		"token":          "fake-token",
+		"remote_user_id": "remote-user",
+	})
+	acct := &model.StrmAccount{
+		Base:     model.Base{ID: "acct-latest-key"},
+		Name:     "tv-emby",
+		Provider: model.StrmProviderEmbyRemote,
+		Config:   string(rawConfig),
+		Enabled:  true,
+	}
+	if err := repos.StrmAccount.Create(t.Context(), acct); err != nil {
+		t.Fatalf("create account: %v", err)
+	}
+	mount := &model.EmbyMount{
+		Base:           model.Base{ID: "mount-latest-key"},
+		AccountID:      acct.ID,
+		RemoteViewID:   "view-tv",
+		RemoteViewName: "电视剧",
+		CollectionType: "tvshows",
+		Enabled:        true,
+	}
+	if err := repos.EmbyMount.Create(t.Context(), mount); err != nil {
+		t.Fatalf("create mount: %v", err)
+	}
+
+	latestCards, err := svc.RemoteLatestCards(t.Context(), mount, acct, mount.RemoteViewID, 10)
+	if err != nil {
+		t.Fatalf("RemoteLatestCards failed: %v", err)
+	}
+	if len(latestCards) != 1 || !latestCards[0].IsSeries {
+		t.Fatalf("expected 1 series latest card, got %#v", latestCards)
+	}
+	seriesCards, err := svc.RemoteSeriesCards(t.Context(), mount, acct, mount.RemoteViewID)
+	if err != nil {
+		t.Fatalf("RemoteSeriesCards failed: %v", err)
+	}
+	if seriesQueryCalls.Load() < 2 {
+		t.Fatalf("expected both latest and series list queries, got %d", seriesQueryCalls.Load())
+	}
+	found := false
+	for _, card := range seriesCards {
+		if card.Key == latestCards[0].Key {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("latest card key %q not present in series list keys %#v", latestCards[0].Key, seriesCards)
+	}
+}
+
 func TestRemoteLatestFields(t *testing.T) {
 	var requestedFields string
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

internal/service/media_series.go

@@ -33,6 +33,7 @@ type SeriesCard struct {
 	Rep         model.Media `json:"rep"`
 	LinkMedia   model.Media `json:"linkMedia"`
 	Count       int         `json:"count"`
+	IsSeries    bool        `json:"is_series,omitempty"`
 	LastAddedAt *time.Time  `json:"last_added_at,omitempty"`
 }
 
@@ -45,6 +46,7 @@ type SeriesCardView struct {
 	Rep           model.Media `json:"rep"`
 	LinkLibraryID string      `json:"linkLibraryId,omitempty"`
 	Count         int         `json:"count"`
+	IsSeries      bool        `json:"is_series,omitempty"`
 	LastAddedAt   *time.Time  `json:"last_added_at,omitempty"`
 }
 
@@ -59,6 +61,7 @@ func NewSeriesCardViews(cards []SeriesCard) []SeriesCardView {
 			Rep:           card.Rep,
 			LinkLibraryID: mediaTargetLibraryID(card.LinkMedia),
 			Count:         card.Count,
+			IsSeries:      card.IsSeries,
 			LastAddedAt:   card.LastAddedAt,
 		}
 	}

internal/service/media_sort.go

@@ -70,7 +70,9 @@ func SortSeriesCards(cards []SeriesCard, field, order string, history map[string
 	}
 	sort.SliceStable(out, func(i, j int) bool {
 		cmp := compareSeriesByField(out[i], out[j], spec, history)
-		if cmp == 0 {
+		// updated_at 表示最后一集添加日期。远程卡片可能没有该字段，此时
+		// 保持调用方给定的顺序，不要用 ID 再次打乱。
+		if cmp == 0 && spec.Field != "updated_at" {
 			cmp = compareID(out[i].Key, out[j].Key)
 		}
 		return cmp < 0
@@ -173,7 +175,7 @@ func seriesUpdatedTime(card SeriesCard) (time.Time, bool) {
 	if card.LastAddedAt != nil && !card.LastAddedAt.IsZero() {
 		return *card.LastAddedAt, true
 	}
-	return mediaUpdatedTime(card.Rep)
+	return time.Time{}, false
 }
 
 func seriesLastPlayed(card SeriesCard, history map[string]time.Time) (time.Time, bool) {

internal/service/media_sort_test.go

@@ -2,6 +2,7 @@ package service
 
 import (
 	"testing"
+	"time"
 
 	"github.com/truewhile/MeBox/internal/model"
 )
@@ -40,3 +41,45 @@ func TestSortSeriesCardsTitleAsc(t *testing.T) {
 		t.Fatalf("series order = %q, %q", got[0].Key, got[1].Key)
 	}
 }
+
+func TestSortSeriesCardsUpdatedAtDoesNotFallbackToMediaDate(t *testing.T) {
+	olderMediaDate := time.Date(2023, time.January, 1, 0, 0, 0, 0, time.UTC)
+	newerMediaDate := time.Date(2025, time.January, 1, 0, 0, 0, 0, time.UTC)
+	cards := []SeriesCard{
+		{
+			Key: "remote-first",
+			Rep: model.Media{Base: model.Base{
+				ID:        "remote-first",
+				CreatedAt: olderMediaDate,
+				UpdatedAt: olderMediaDate,
+			}},
+		},
+		{
+			Key: "remote-second",
+			Rep: model.Media{Base: model.Base{
+				ID:        "remote-second",
+				CreatedAt: newerMediaDate,
+				UpdatedAt: newerMediaDate,
+			}},
+		},
+	}
+
+	got := SortSeriesCards(cards, "updated_at", "desc", nil)
+	if got[0].Key != "remote-first" || got[1].Key != "remote-second" {
+		t.Fatalf("series order = %q, %q, want remote-provided order", got[0].Key, got[1].Key)
+	}
+}
+
+func TestSortSeriesCardsUpdatedAtSortsKnownLastEpisodeDates(t *testing.T) {
+	older := time.Date(2024, time.January, 1, 0, 0, 0, 0, time.UTC)
+	newer := time.Date(2025, time.January, 1, 0, 0, 0, 0, time.UTC)
+	cards := []SeriesCard{
+		{Key: "older", LastAddedAt: &older},
+		{Key: "newer", LastAddedAt: &newer},
+	}
+
+	got := SortSeriesCards(cards, "updated_at", "desc", nil)
+	if got[0].Key != "newer" || got[1].Key != "older" {
+		t.Fatalf("series order = %q, %q", got[0].Key, got[1].Key)
+	}
+}

internal/service/playback_quality.go

@@ -0,0 +1,277 @@
+package service
+
+import (
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/service/cloud115"
+)
+
+// PlaybackQuality 是返回给播放器的统一画质选项。
+//
+// Source:
+//   - cloud:    115 云端转码清晰度
+//   - original: 115 原文件（直连，可能仍是 MKV/HEVC/PGS）
+//   - local:    MeBox 本地 HLS 重新编码清晰度
+type PlaybackQuality struct {
+	ID                string `json:"id"`
+	Label             string `json:"label"`
+	Height            int    `json:"height,omitempty"`
+	Source            string `json:"source"`
+	Available         bool   `json:"available"`
+	RequiresTranscode bool   `json:"requires_transcode,omitempty"`
+	RequiresVIP       bool   `json:"requires_vip,omitempty"`
+	Note              string `json:"note,omitempty"`
+}
+
+type cloud115QualitySpec struct {
+	ID     string
+	Label  string
+	Height int
+	VIP    bool
+}
+
+var cloud115QualityLadder = []cloud115QualitySpec{
+	{ID: "1", Label: "标清", Height: 480},
+	{ID: "2", Label: "高清", Height: 540},
+	{ID: "3", Label: "超清", Height: 720},
+	{ID: "4", Label: "1080P", Height: 1080},
+	{ID: "5", Label: "4K", Height: 2160, VIP: true},
+}
+
+var resolutionTokenRE = regexp.MustCompile(`(?i)(\d{3,4})p`)
+
+func mediaSourceHeight(m *model.Media) int {
+	if m == nil {
+		return 0
+	}
+	if m.Height > 0 {
+		return m.Height
+	}
+	for _, text := range []string{m.OriginalName, m.Path, m.STRMURL} {
+		if h := parseHeightToken(text); h > 0 {
+			return h
+		}
+	}
+	return 0
+}
+
+func parseHeightToken(text string) int {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return 0
+	}
+	upper := strings.ToUpper(text)
+	if strings.Contains(upper, "4K") || strings.Contains(upper, "2160P") {
+		return 2160
+	}
+	for _, match := range resolutionTokenRE.FindAllStringSubmatch(text, -1) {
+		if len(match) < 2 {
+			continue
+		}
+		height, err := strconv.Atoi(match[1])
+		if err != nil || height < 240 || height > 4320 {
+			continue
+		}
+		return height
+	}
+	return 0
+}
+
+func cloud115AvailableDefinitions(data *cloud115.VideoPlayData) map[string]bool {
+	available := map[string]bool{}
+	if data == nil {
+		return available
+	}
+	for key := range data.DefinitionListNew {
+		key = strings.TrimSpace(key)
+		if key != "" {
+			available[key] = true
+		}
+	}
+	for key := range data.DefinitionList {
+		key = strings.TrimSpace(key)
+		if key != "" {
+			available[key] = true
+		}
+	}
+	for _, item := range data.VideoURL {
+		id := item.DefinitionN
+		if id <= 0 {
+			id = item.Definition
+		}
+		if id > 0 {
+			available[strconv.Itoa(id)] = true
+		}
+	}
+	return available
+}
+
+func cloud115SourceHeight(m *model.Media, data *cloud115.VideoPlayData) int {
+	if height := mediaSourceHeight(m); height > 0 {
+		return height
+	}
+	maxHeight := 0
+	if data != nil {
+		for _, item := range data.VideoURL {
+			if item.Height > maxHeight {
+				maxHeight = item.Height
+			}
+		}
+	}
+	if maxHeight > 0 {
+		return maxHeight
+	}
+	return 1080
+}
+
+// Cloud115QualityOptions 返回 115 已转码和“按源分辨率可转码”的清晰度。
+// 未出现在 definition_list_new/video_url 中的档位会标记为需要云端转码。
+func Cloud115QualityOptions(m *model.Media, data *cloud115.VideoPlayData) []PlaybackQuality {
+	sourceHeight := cloud115SourceHeight(m, data)
+	available := cloud115AvailableDefinitions(data)
+	out := make([]PlaybackQuality, 0, len(cloud115QualityLadder)+1)
+
+	out = append(out, PlaybackQuality{
+		ID:        "100",
+		Label:     "原画",
+		Height:    sourceHeight,
+		Source:    "original",
+		Available: true,
+		Note:      "播放原始文件，可能仍是 MKV/HEVC/PGS",
+	})
+
+	for _, spec := range cloud115QualityLadder {
+		if sourceHeight > 0 && spec.Height > sourceHeight && !available[spec.ID] {
+			continue
+		}
+		label := spec.Label
+		if data != nil && strings.TrimSpace(data.DefinitionListNew[spec.ID]) != "" {
+			label = strings.TrimSpace(data.DefinitionListNew[spec.ID])
+		}
+		isAvailable := available[spec.ID]
+		item := PlaybackQuality{
+			ID:                spec.ID,
+			Label:             label,
+			Height:            spec.Height,
+			Source:            "cloud",
+			Available:         isAvailable,
+			RequiresTranscode: !isAvailable,
+			RequiresVIP:       spec.VIP,
+		}
+		if !isAvailable {
+			item.Note = "需要 115 云端转码"
+		}
+		if spec.VIP {
+			if item.Note != "" {
+				item.Note += "，"
+			}
+			item.Note += "需要年费 VIP"
+		}
+		out = append(out, item)
+	}
+
+	sort.SliceStable(out, func(i, j int) bool {
+		if out[i].Source != out[j].Source {
+			return out[i].Source == "original"
+		}
+		if out[i].Height != out[j].Height {
+			return out[i].Height > out[j].Height
+		}
+		return out[i].ID < out[j].ID
+	})
+	return out
+}
+
+// DefaultCloud115Quality 默认优先 1080P；没有 1080P 时退回最高的云端档位。
+func DefaultCloud115Quality(options []PlaybackQuality) string {
+	for _, option := range options {
+		if option.ID == "4" && option.Source == "cloud" {
+			return option.ID
+		}
+	}
+	best := ""
+	bestHeight := -1
+	for _, option := range options {
+		if option.Source != "cloud" {
+			continue
+		}
+		if option.Height > bestHeight {
+			best = option.ID
+			bestHeight = option.Height
+		}
+	}
+	if best != "" {
+		return best
+	}
+	return "4"
+}
+
+// LocalQualityOptions 返回 MeBox 本地 HLS 可用的画质档位。
+func LocalQualityOptions(m *model.Media) []PlaybackQuality {
+	sourceHeight := mediaSourceHeight(m)
+	presets := []PlaybackQuality{
+		{ID: "source", Label: "原画", Height: sourceHeight, Source: "local", Available: true, Note: "本地 HLS，保持源分辨率"},
+		{ID: "1080", Label: "1080P", Height: 1080, Source: "local", Available: true},
+		{ID: "720", Label: "720P", Height: 720, Source: "local", Available: true},
+		{ID: "480", Label: "480P", Height: 480, Source: "local", Available: true},
+	}
+	out := make([]PlaybackQuality, 0, len(presets))
+	for _, preset := range presets {
+		if preset.ID != "source" && sourceHeight > 0 && preset.Height > sourceHeight {
+			continue
+		}
+		out = append(out, preset)
+	}
+	sort.SliceStable(out, func(i, j int) bool {
+		if out[i].ID == "source" {
+			return true
+		}
+		if out[j].ID == "source" {
+			return false
+		}
+		return out[i].Height > out[j].Height
+	})
+	return out
+}
+
+// LocalHLSQuality 是传给 ffmpeg 的本地 HLS 画质参数。
+type LocalHLSQuality struct {
+	ID           string
+	Label        string
+	Height       int
+	VideoBitrate string
+	MaxRate      string
+	BufSize      string
+}
+
+var localHLSQualities = map[string]LocalHLSQuality{
+	"source": {ID: "source", Label: "原画", Height: 0, VideoBitrate: "8000k", MaxRate: "10000k", BufSize: "12000k"},
+	"1080":   {ID: "1080", Label: "1080P", Height: 1080, VideoBitrate: "4000k", MaxRate: "4500k", BufSize: "6000k"},
+	"720":    {ID: "720", Label: "720P", Height: 720, VideoBitrate: "2500k", MaxRate: "2800k", BufSize: "4000k"},
+	"480":    {ID: "480", Label: "480P", Height: 480, VideoBitrate: "1200k", MaxRate: "1400k", BufSize: "2000k"},
+}
+
+func LocalHLSQualityByID(id string) (LocalHLSQuality, bool) {
+	quality, ok := localHLSQualities[strings.TrimSpace(id)]
+	return quality, ok
+}
+
+func DefaultLocalHLSQualityID(m *model.Media) string {
+	sourceHeight := mediaSourceHeight(m)
+	switch {
+	case sourceHeight >= 1080:
+		return "1080"
+	case sourceHeight >= 720:
+		return "720"
+	case sourceHeight >= 480:
+		return "480"
+	case sourceHeight > 0:
+		return "source"
+	default:
+		return "720"
+	}
+}

internal/service/playback_quality_test.go

@@ -0,0 +1,109 @@
+package service
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/truewhile/MeBox/internal/config"
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/service/cloud115"
+)
+
+func TestCloud115QualityOptionsDefault1080AndTranscode(t *testing.T) {
+	media := &model.Media{Height: 1080}
+	data := &cloud115.VideoPlayData{
+		DefinitionListNew: map[string]string{"3": "超清"},
+		VideoURL: []cloud115.VideoURLItem{
+			{Definition: 3, DefinitionN: 3, Height: 720, Width: 1280, Title: "超清"},
+		},
+	}
+	options := Cloud115QualityOptions(media, data)
+	if got := DefaultCloud115Quality(options); got != "4" {
+		t.Fatalf("default quality = %q, want 4", got)
+	}
+	quality4, ok := findPlaybackQuality(options, "4")
+	if !ok {
+		t.Fatal("1080P option missing")
+	}
+	if quality4.Available || !quality4.RequiresTranscode {
+		t.Fatalf("1080P should require transcode: %#v", quality4)
+	}
+	quality3, ok := findPlaybackQuality(options, "3")
+	if !ok || !quality3.Available || quality3.RequiresTranscode {
+		t.Fatalf("超清 should be available: %#v", quality3)
+	}
+	if quality4K, ok := findPlaybackQuality(options, "5"); ok {
+		t.Fatalf("1080P source should not list 4K: %#v", quality4K)
+	}
+}
+
+func TestCloud115QualityOptionsListsAvailableOnlyOnce(t *testing.T) {
+	media := &model.Media{Height: 2160}
+	data := &cloud115.VideoPlayData{
+		DefinitionListNew: map[string]string{"4": "1080P", "5": "4K"},
+		VideoURL: []cloud115.VideoURLItem{
+			{Definition: 4, DefinitionN: 4, Height: 1080},
+			{Definition: 5, DefinitionN: 5, Height: 2160},
+		},
+	}
+	options := Cloud115QualityOptions(media, data)
+	for _, id := range []string{"4", "5"} {
+		quality, ok := findPlaybackQuality(options, id)
+		if !ok || !quality.Available {
+			t.Fatalf("quality %s should be available: %#v", id, quality)
+		}
+	}
+	quality5, _ := findPlaybackQuality(options, "5")
+	if !quality5.RequiresVIP {
+		t.Fatalf("4K should be marked VIP: %#v", quality5)
+	}
+}
+
+func TestLocalQualityOptionsFollowSourceHeight(t *testing.T) {
+	media := &model.Media{Height: 720}
+	options := LocalQualityOptions(media)
+	if _, ok := findPlaybackQuality(options, "1080"); ok {
+		t.Fatal("720p source should not list 1080P")
+	}
+	for _, id := range []string{"source", "720", "480"} {
+		if _, ok := findPlaybackQuality(options, id); !ok {
+			t.Fatalf("local quality %s missing", id)
+		}
+	}
+	if got := DefaultLocalHLSQualityID(media); got != "720" {
+		t.Fatalf("default local quality = %q, want 720", got)
+	}
+}
+
+func TestLocalHLSQualityFFmpegArgs(t *testing.T) {
+	cfg := &config.Config{}
+	cfg.Transcoder.MaxHeight = 720
+	cfg.Transcoder.SegmentSeconds = 4
+	cfg.Transcoder.Realtime = false
+	cfg.Transcoder.HardwareAccel = false
+
+	quality480, _ := LocalHLSQualityByID("480")
+	args := buildFFmpegArgsForInput(cfg, transcodeInput{Source: "/x.mkv", Quality: &quality480}, "/o/x.m3u8", "/o/seg_%05d.ts")
+	joined := strings.Join(args, " ")
+	if !strings.Contains(joined, "scale=-2:min(480\\,ih)") {
+		t.Fatalf("480P scale filter missing: %s", joined)
+	}
+	if !strings.Contains(joined, "-b:v 1200k") {
+		t.Fatalf("480P bitrate missing: %s", joined)
+	}
+
+	cfg.Transcoder.HardwareAccel = true
+	cfg.Transcoder.Encoder = "nvenc"
+	qualitySource, _ := LocalHLSQualityByID("source")
+	args = buildFFmpegArgsForInput(cfg, transcodeInput{Source: "/x.mkv", Quality: &qualitySource}, "/o/x.m3u8", "/o/seg_%05d.ts")
+	joined = strings.Join(args, " ")
+	if strings.Contains(joined, "h264_nvenc") {
+		t.Fatalf("source quality should not use hardware scale path: %s", joined)
+	}
+	if strings.Contains(joined, "scale=-2:min(") {
+		t.Fatalf("source quality should not downscale: %s", joined)
+	}
+	if !strings.Contains(joined, "libx264") {
+		t.Fatalf("source quality should use software x264: %s", joined)
+	}
+}

internal/service/service.go

@@ -64,6 +64,7 @@ type Container struct {
 	RecognitionWords *RecognitionWordsService
 	Danmaku          *DanmakuService
 	Strm             *StrmService
+	Cloud115         *Cloud115PlaybackService
 	Database         *DatabaseAdminService
 	FFTools          *FFmpegToolsService
 

internal/service/service_builder.go

@@ -28,13 +28,13 @@ func newServiceContainer(cfg *config.Config, log *zap.Logger, repos *repository.
 		cfg:     cfg,
 		log:     log,
 		repos:   repos,
-			version: normalizeSystemUpdateVersion(version),
-			c: &Container{
-				Version: normalizeSystemUpdateVersion(version),
-				Cfg:     cfg,
-				Log:     log,
-				Repo:    repos,
-			},
+		version: normalizeSystemUpdateVersion(version),
+		c: &Container{
+			Version: normalizeSystemUpdateVersion(version),
+			Cfg:     cfg,
+			Log:     log,
+			Repo:    repos,
+		},
 	}
 	builder.startRealtimeServices()
 	builder.initProviderServices()
@@ -119,6 +119,7 @@ func (b *serviceContainerBuilder) initContentServices() {
 	b.c.Profile = NewProfileService(b.log, b.repos)
 	b.c.Audit = NewAuditService(b.log, b.repos)
 	b.c.Strm = NewStrmService(b.cfg, b.log, b.repos, b.c.Crypto)
+	b.c.Cloud115 = NewCloud115PlaybackService(b.cfg, b.log, b.repos, b.c.Strm)
 	// ffmpeg/ffprobe 一键下载安装（data/tools/ffmpeg/）。
 	b.c.FFTools = NewFFmpegToolsService(b.cfg, b.log, b.repos)
 	// 弹幕 hash 识别需要把 strm 指向解析成可拉取的直链/本地路径。

internal/service/stream_hls.go

@@ -26,7 +26,8 @@ func (s *StreamService) ServeHLSPlaylist(w http.ResponseWriter, r *http.Request,
 	startSec := parseHLSStartSec(r)
 	seekGen := parseHLSSeekGen(r)
 	subtitleStream := parseHLSSubtitleStream(r)
-	if _, err := s.transcoder.EnsureJobFromSubtitle(r.Context(), mediaID, startSec, seekGen, subtitleStream); err != nil {
+	quality := parseHLSQuality(r)
+	if _, err := s.transcoder.EnsureJobFromSubtitleQuality(r.Context(), mediaID, startSec, seekGen, subtitleStream, quality); err != nil {
 		return err
 	}
 	s.transcoder.TouchJob(mediaID)
@@ -76,6 +77,20 @@ func parseHLSSubtitleStream(r *http.Request) int {
 	return v
 }
 
+func parseHLSQuality(r *http.Request) string {
+	if r == nil {
+		return ""
+	}
+	quality := strings.TrimSpace(r.URL.Query().Get("quality"))
+	if quality == "" {
+		return ""
+	}
+	if _, ok := LocalHLSQualityByID(quality); !ok {
+		return ""
+	}
+	return quality
+}
+
 func parseHLSStartSec(r *http.Request) float64 {
 	if r == nil {
 		return 0

internal/service/transcoder.go

@@ -47,8 +47,8 @@ type TranscoderService struct {
 	repo *repository.Container
 	hub  *Hub
 
-	mu          sync.Mutex
-	jobs        map[string]*hlsJob
+	mu   sync.Mutex
+	jobs map[string]*hlsJob
 	// startGates serializes EnsureJobFrom / StopJob per media so concurrent
 	// playlist hits cannot spawn multiple ffmpeg writers into one HLS dir.
 	startGates  sync.Map // mediaID -> *sync.Mutex
@@ -74,6 +74,8 @@ type hlsJob struct {
 	// subtitleStream is an absolute ffmpeg stream index to burn into the
 	// picture, or -1 when no bitmap subtitle is selected.
 	subtitleStream int
+	// quality is the requested local HLS quality profile ("" = global config).
+	quality string
 	// done is closed when the ffmpeg goroutine fully exits (after process death).
 	done chan struct{}
 }
@@ -130,12 +132,27 @@ func (t *TranscoderService) EnsureJobFrom(ctx context.Context, mediaID string, s
 // EnsureJobFromSubtitle is EnsureJobFrom with an optional bitmap subtitle
 // stream. Selecting or closing a burned subtitle creates a new HLS generation.
 func (t *TranscoderService) EnsureJobFromSubtitle(ctx context.Context, mediaID string, startSec float64, seekGen int64, subtitleStream int) (string, error) {
+	return t.EnsureJobFromSubtitleQuality(ctx, mediaID, startSec, seekGen, subtitleStream, "")
+}
+
+// EnsureJobFromSubtitleQuality is EnsureJobFromSubtitle with an explicit local
+// HLS quality profile. Empty qualityID keeps the global transcoder config.
+func (t *TranscoderService) EnsureJobFromSubtitleQuality(ctx context.Context, mediaID string, startSec float64, seekGen int64, subtitleStream int, qualityID string) (string, error) {
 	if !t.cfg.Transcoder.Enabled {
 		return "", ErrTranscodeDisabled
 	}
 	if startSec < 0 {
 		startSec = 0
 	}
+	var quality *LocalHLSQuality
+	if requested := strings.TrimSpace(qualityID); requested != "" {
+		profile, ok := LocalHLSQualityByID(requested)
+		if !ok {
+			return "", fmt.Errorf("未知的 HLS 画质：%s", requested)
+		}
+		quality = &profile
+		qualityID = profile.ID
+	}
 	m, err := t.repo.Media.FindByID(ctx, mediaID)
 	if err != nil {
 		return "", err
@@ -150,12 +167,12 @@ func (t *TranscoderService) EnsureJobFromSubtitle(ctx context.Context, mediaID s
 
 	t.mu.Lock()
 	if existing, ok := t.jobs[mediaID]; ok {
-		if sameHLSConfiguration(existing, startSec, subtitleStream) {
+		if sameHLSConfiguration(existing, startSec, subtitleStream, qualityID) {
 			t.touchJobLocked(mediaID)
 			t.mu.Unlock()
 			return t.PlaylistPath(mediaID), nil
 		}
-		if !shouldReplaceHLSJobConfiguration(existing, startSec, seekGen, subtitleStream) {
+		if !shouldReplaceHLSJobConfigurationQuality(existing, startSec, seekGen, subtitleStream, qualityID) {
 			t.touchJobLocked(mediaID)
 			t.mu.Unlock()
 			return t.PlaylistPath(mediaID), nil
@@ -175,6 +192,7 @@ func (t *TranscoderService) EnsureJobFromSubtitle(ctx context.Context, mediaID s
 	if subtitleStream >= 0 {
 		input.SubtitleStream = &subtitleStream
 	}
+	input.Quality = quality
 	t.maybeFillDuration(ctx, m, input)
 	if _, err := t.resolveFFmpegPath(); err != nil {
 		return "", err
@@ -189,12 +207,12 @@ func (t *TranscoderService) EnsureJobFromSubtitle(ctx context.Context, mediaID s
 
 	t.mu.Lock()
 	if existing, ok := t.jobs[mediaID]; ok {
-		if sameHLSConfiguration(existing, startSec, subtitleStream) {
+		if sameHLSConfiguration(existing, startSec, subtitleStream, qualityID) {
 			t.touchJobLocked(mediaID)
 			t.mu.Unlock()
 			return t.PlaylistPath(mediaID), nil
 		}
-		if !shouldReplaceHLSJobConfiguration(existing, startSec, seekGen, subtitleStream) {
+		if !shouldReplaceHLSJobConfigurationQuality(existing, startSec, seekGen, subtitleStream, qualityID) {
 			t.touchJobLocked(mediaID)
 			t.mu.Unlock()
 			return t.PlaylistPath(mediaID), nil
@@ -224,6 +242,7 @@ func (t *TranscoderService) EnsureJobFromSubtitle(ctx context.Context, mediaID s
 		startSec:       startSec,
 		seekGen:        seekGen,
 		subtitleStream: subtitleStream,
+		quality:        qualityID,
 		done:           make(chan struct{}),
 	}
 	t.jobs[mediaID] = job
@@ -250,10 +269,14 @@ func shouldReplaceHLSJob(existing *hlsJob, startSec float64, seekGen int64) bool
 }
 
 func shouldReplaceHLSJobConfiguration(existing *hlsJob, startSec float64, seekGen int64, subtitleStream int) bool {
+	return shouldReplaceHLSJobConfigurationQuality(existing, startSec, seekGen, subtitleStream, "")
+}
+
+func shouldReplaceHLSJobConfigurationQuality(existing *hlsJob, startSec float64, seekGen int64, subtitleStream int, quality string) bool {
 	if existing == nil {
 		return true
 	}
-	if sameHLSConfiguration(existing, startSec, subtitleStream) {
+	if sameHLSConfiguration(existing, startSec, subtitleStream, quality) {
 		return false
 	}
 	return newerHLSGenerationMayReplace(existing, seekGen)
@@ -270,9 +293,10 @@ func newerHLSGenerationMayReplace(existing *hlsJob, seekGen int64) bool {
 	return true
 }
 
-func sameHLSConfiguration(existing *hlsJob, startSec float64, subtitleStream int) bool {
+func sameHLSConfiguration(existing *hlsJob, startSec float64, subtitleStream int, quality string) bool {
 	return existing != nil &&
 		existing.subtitleStream == subtitleStream &&
+		existing.quality == quality &&
 		sameHLSStart(existing.startSec, startSec)
 }
 

internal/service/transcoder_ffmpeg_args.go

@@ -15,6 +15,7 @@ type transcodeInput struct {
 	Headers        map[string]string
 	StartSec       float64
 	SubtitleStream *int
+	Quality        *LocalHLSQuality
 }
 
 type ffmpegArgSettings struct {
@@ -28,6 +29,7 @@ type ffmpegArgSettings struct {
 	realtime       bool
 	threads        int
 	vaapiDevice    string
+	noScale        bool
 }
 
 type ffmpegVideoPlan struct {
@@ -45,7 +47,11 @@ func buildFFmpegArgs(cfg *config.Config, source, playlist, segments string) []st
 }
 
 func buildFFmpegArgsForInput(cfg *config.Config, input transcodeInput, playlist, segments string) []string {
-	settings := ffmpegArgSettingsFromConfig(cfg)
+	settings := ffmpegArgSettingsFromConfig(cfg, input.Quality)
+	if settings.noScale {
+		// 原画档位不做硬件缩放的兼容处理，直接走软件编码，保持源分辨率。
+		settings.encoder = ""
+	}
 	video := ffmpegVideoPlanForSettings(settings)
 	if input.SubtitleStream != nil {
 		// Bitmap subtitles must be composited in software. Keeping CUDA/QSV/
@@ -64,7 +70,7 @@ func buildFFmpegArgsForInput(cfg *config.Config, input transcodeInput, playlist,
 	return args
 }
 
-func ffmpegArgSettingsFromConfig(cfg *config.Config) ffmpegArgSettings {
+func ffmpegArgSettingsFromConfig(cfg *config.Config, quality *LocalHLSQuality) ffmpegArgSettings {
 	settings := ffmpegArgSettings{
 		bitrate:        ffmpegDefaultString(cfg.Transcoder.VideoBitrate, "1500k"),
 		maxrate:        ffmpegDefaultString(cfg.Transcoder.MaxRate, "1800k"),
@@ -79,7 +85,23 @@ func ffmpegArgSettingsFromConfig(cfg *config.Config) ffmpegArgSettings {
 	if cfg.Transcoder.HardwareAccel {
 		settings.encoder = normalizedHardwareEncoder(cfg.Transcoder.Encoder)
 	}
-	if settings.height <= 0 {
+	if quality != nil {
+		if strings.TrimSpace(quality.VideoBitrate) != "" {
+			settings.bitrate = strings.TrimSpace(quality.VideoBitrate)
+		}
+		if strings.TrimSpace(quality.MaxRate) != "" {
+			settings.maxrate = strings.TrimSpace(quality.MaxRate)
+		}
+		if strings.TrimSpace(quality.BufSize) != "" {
+			settings.bufsize = strings.TrimSpace(quality.BufSize)
+		}
+		if quality.Height > 0 {
+			settings.height = quality.Height
+		} else {
+			settings.noScale = true
+		}
+	}
+	if settings.height <= 0 && !settings.noScale {
 		settings.height = 720
 	}
 	if settings.segmentSeconds <= 0 {
@@ -118,8 +140,12 @@ func ffmpegVideoPlanForSettings(settings ffmpegArgSettings) ffmpegVideoPlan {
 			codec:    "h264_vaapi",
 		}
 	default:
+		filter := ""
+		if !settings.noScale {
+			filter = fmt.Sprintf("scale=-2:min(%d\\,ih)", settings.height)
+		}
 		return ffmpegVideoPlan{
-			filter: fmt.Sprintf("scale=-2:min(%d\\,ih)", settings.height),
+			filter: filter,
 			codec:  "libx264",
 			preset: settings.preset,
 		}
@@ -149,14 +175,18 @@ func appendInputAndVideoArgs(args []string, input transcodeInput, settings ffmpe
 	}
 	args = append(args, "-i", input.Source)
 	if input.SubtitleStream != nil {
-		filter := fmt.Sprintf(
-			"[0:v:0][0:%d]overlay=0:0:eof_action=pass,scale=-2:min(%d\\,ih)[v]",
-			*input.SubtitleStream,
-			settings.height,
-		)
+		filter := fmt.Sprintf("[0:v:0][0:%d]overlay=0:0:eof_action=pass", *input.SubtitleStream)
+		if !settings.noScale {
+			filter += fmt.Sprintf(",scale=-2:min(%d\\,ih)", settings.height)
+		}
+		filter += "[v]"
 		args = append(args, "-filter_complex", filter, "-map", "[v]", "-map", "0:a:0?", "-c:v", video.codec)
 	} else {
-		args = append(args, "-map", "0:v:0?", "-map", "0:a:0?", "-vf", video.filter, "-c:v", video.codec)
+		args = append(args, "-map", "0:v:0?", "-map", "0:a:0?")
+		if video.filter != "" {
+			args = append(args, "-vf", video.filter)
+		}
+		args = append(args, "-c:v", video.codec)
 	}
 	if settings.threads > 0 && video.codec == "libx264" {
 		args = append(args, "-threads", strconv.Itoa(settings.threads))

web/src/api/client.ts

@@ -147,7 +147,7 @@ export function streamURL(mediaId: string): string {
 
 // hlsURL returns the m3u8 playlist URL fed into hls.js.
 // startSec > 0 asks the server to (re)start ffmpeg from that source offset.
-export function hlsURL(mediaId: string, startSec = 0, subtitleStream?: number): string {
+export function hlsURL(mediaId: string, startSec = 0, subtitleStream?: number, quality?: string): string {
   const safeStart = Math.max(0, Math.round(startSec * 1000) / 1000)
   // Always send start= (including 0) so the server can tell an intentional
   // restart-from-head apart from a missing query on a stale refresh.
@@ -159,7 +159,17 @@ export function hlsURL(mediaId: string, startSec = 0, subtitleStream?: number):
     subtitleStream !== undefined && subtitleStream >= 0
       ? `&subtitle=${encodeURIComponent(String(subtitleStream))}`
       : ''
-  return `/api/hls/${encodeURIComponent(mediaId)}/index.m3u8?${tokenQuery()}${profileQuery()}${start}${subtitle}${bust}`
+  const qualityQuery = quality ? `&quality=${encodeURIComponent(quality)}` : ''
+  return `/api/hls/${encodeURIComponent(mediaId)}/index.m3u8?${tokenQuery()}${profileQuery()}${start}${subtitle}${qualityQuery}${bust}`
+}
+
+// cloudHlsURL returns the MeBox-proxied 115 cloud HLS master playlist URL.
+// A browser cannot fetch the 115 CDN directly because its CORS policy only
+// allows https://115.com; the backend rewrites all child URLs to this
+// same-origin proxy.
+export function cloudHlsURL(mediaId: string, definition: string): string {
+  const quality = definition ? `&definition=${encodeURIComponent(definition)}` : ''
+  return `/api/cloud115/media/${encodeURIComponent(mediaId)}/master.m3u8?${tokenQuery()}${profileQuery()}${quality}&media_id=${encodeURIComponent(mediaId)}`
 }
 
 // Stop an on-demand HLS job. keepalive makes the request survive page

web/src/api/danmaku.ts

@@ -71,6 +71,7 @@ export interface DanmakuConfig {
   font_size: string
   area: string
   volume: number
+  playback_rate: number
   /** Per-user preference: merge the same episode's multiple sources. */
   merge_sources: boolean
 }
@@ -87,6 +88,7 @@ export interface DanmakuSettingsPatch {
   area?: number
   merge_sources?: boolean
   volume?: number
+  playback_rate?: number
 }
 
 // danmakuAPI fetches danmaku comments for a media item. The backend resolves

web/src/api/library.ts

@@ -1,5 +1,5 @@
 import { api, BATCH_REQUEST_TIMEOUT, LONG_REQUEST_TIMEOUT } from './client'
-import type { Library, LibraryRoot, Media, ScanResult } from '../types'
+import type { Library, LibraryRoot, Media, PlaybackInfo, ScanResult } from '../types'
 import type { SeriesCard } from '../utils/groupSeries'
 
 export interface MediaPage {
@@ -233,6 +233,18 @@ export const mediaAPI = {
 
   get: (id: string) => api.get<Media>(`/media/${id}`).then((r) => r.data),
 
+  playbackInfo: (id: string, quality?: number) =>
+    api
+      .get<PlaybackInfo>(`/media/${id}/playback`, {
+        params: quality && quality > 0 ? { quality } : undefined,
+      })
+      .then((r) => r.data),
+
+  startCloudTranscode: (id: string, definition: number) =>
+    api
+      .post<PlaybackInfo>(`/media/${id}/transcode`, { definition })
+      .then((r) => r.data),
+
   getEpisodes: (id: string) =>
     api.get<{ items: Media[]; total: number }>(`/media/${id}/episodes`).then((r) => r.data),
 

web/src/components/Layout.tsx

@@ -87,7 +87,11 @@ export function Layout() {
             pathname={location.pathname}
           />
         )}
-        <LayoutWorkspace routeKey={location.pathname} showMobileBottomNav={showMobileBottomNav} />
+        <LayoutWorkspace
+          routeKey={location.pathname}
+          userKey={user?.id}
+          showMobileBottomNav={showMobileBottomNav}
+        />
         {showMobileBottomNav && (
           <MobileBottomNav onOpenMenu={() => sidebar.setIsMobileDrawerOpen(true)} />
         )}

web/src/components/LayoutSections.tsx

@@ -4,6 +4,7 @@ import clsx from 'clsx'
 import { LayoutSidebarContent, type LayoutSidebarContentProps } from './LayoutSidebarContent'
 import { isPlayerRoute } from './layoutNavigation'
 import { RouteErrorBoundary } from './RouteErrorBoundary'
+import { useScrollMemory } from '../hooks/useScrollMemory'
 import type { useLayoutSidebar } from './useLayoutSidebar'
 
 type LayoutSidebarState = ReturnType<typeof useLayoutSidebar>
@@ -30,6 +31,7 @@ type LayoutSidebarsProps = Omit<
 
 type LayoutWorkspaceProps = {
   routeKey: string
+  userKey?: string
   showMobileBottomNav?: boolean
 }
 
@@ -109,7 +111,13 @@ export function LayoutSidebars({
   )
 }
 
-export function LayoutWorkspace({ routeKey, showMobileBottomNav = false }: LayoutWorkspaceProps) {
+export function LayoutWorkspace({
+  routeKey,
+  userKey = 'anonymous',
+  showMobileBottomNav = false,
+}: LayoutWorkspaceProps) {
+  useScrollMemory(routeKey, userKey)
+
   const bottomPad = showMobileBottomNav
     ? 'pb-[calc(3.75rem+env(safe-area-inset-bottom,0px))] lg:pb-10'
     : ''

web/src/components/PlayerControls.tsx

@@ -3,8 +3,12 @@ import { createPortal } from 'react-dom'
 import {
   Captions,
   CaptionsOff,
+  Check,
   FastForward,
+  Gauge,
   ListVideo,
+  Loader2,
+  Lock,
   Maximize,
   MessageSquareText,
   Minimize,
@@ -14,10 +18,18 @@ import {
   Rewind,
   SkipBack,
   SkipForward,
+  Timer,
   Volume2,
   VolumeX,
 } from 'lucide-react'
 import type { SubtitleTrack } from '../api/subtitles'
+import type { PlaybackQuality } from '../types'
+import {
+  formatPlaybackRate,
+  normalizePlaybackRate,
+  PLAYBACK_RATE_OPTIONS,
+  stepPlaybackRate,
+} from '../utils/playbackRate'
 import type { SubtitleChineseMode } from '../utils/subtitleChinese'
 import {
   SUBTITLE_POSITION_OPTIONS,
@@ -42,18 +54,28 @@ const SEEK_STEP_SEC = 10
 const SEEK_REPEAT_MS = 160
 const SEEK_APPLY_MS = 220
 const SEEK_HINT_MS = 700
+const PLAYBACK_RATE_REPEAT_MS = 140
+const PLAYBACK_RATE_HINT_MS = 900
 
 type SeekHint = {
   dir: 'back' | 'forward'
   seconds: number
 }
 
-function isEditableTarget(target: EventTarget | null): boolean {
+function isPlayerSeekRange(target: EventTarget | null): boolean {
+  return target instanceof HTMLInputElement && target.dataset.playerSeekRange === 'true'
+}
+
+function shouldIgnorePlayerSeekShortcut(target: EventTarget | null): boolean {
   if (!(target instanceof HTMLElement)) return false
-  return Boolean(
-    target.closest('input, textarea, select, [contenteditable="true"]') ||
-      target.isContentEditable,
+  const control = target.closest<HTMLElement>(
+    'input, textarea, select, [contenteditable="true"]',
   )
+  if (control instanceof HTMLInputElement) {
+    // 进度条需要继续走播放器的 10 秒快捷键；其它输入控件保留原生键盘行为。
+    return !isPlayerSeekRange(control)
+  }
+  return Boolean(control || target.isContentEditable)
 }
 
 type PlayerControlsProps = {
@@ -62,6 +84,10 @@ type PlayerControlsProps = {
   volume?: number
   onVolumeChange?: (volume: number) => void
   onVolumeCommit?: (volume: number) => void
+  /** 用户级播放倍速，由播放页从数据库读取。 */
+  playbackRate?: number
+  onPlaybackRateChange?: (rate: number) => void
+  onPlaybackRateCommit?: (rate: number) => void
   uiVisible: boolean
   onUiVisibleChange: (visible: boolean) => void
   subs: SubtitleTrack[]
@@ -86,6 +112,10 @@ type PlayerControlsProps = {
   playlistOpen?: boolean
   hasPlaylist?: boolean
   onTogglePlaylist?: () => void
+  qualities?: PlaybackQuality[]
+  selectedQuality?: string
+  onSelectQuality?: (quality: PlaybackQuality) => void
+  showQuality?: boolean
   /** Media metadata duration (seconds). Used when HLS only knows transcoded length. */
   knownDuration?: number
   /** Absolute source offset of the current HLS session (seconds). */
@@ -99,6 +129,9 @@ export function PlayerControls({
   volume: volumeProp = 1,
   onVolumeChange,
   onVolumeCommit,
+  playbackRate: playbackRateProp = 1,
+  onPlaybackRateChange,
+  onPlaybackRateCommit,
   uiVisible,
   onUiVisibleChange,
   subs,
@@ -122,6 +155,10 @@ export function PlayerControls({
   playlistOpen = false,
   hasPlaylist = false,
   onTogglePlaylist,
+  qualities = [],
+  selectedQuality = '',
+  onSelectQuality,
+  showQuality = false,
   knownDuration = 0,
   streamOffset = 0,
   onSeekAbsolute,
@@ -144,10 +181,16 @@ export function PlayerControls({
   const [scrubValue, setScrubValue] = useState<number | null>(null)
   const [subtitleMenuOpen, setSubtitleMenuOpen] = useState(false)
   const subtitleMenuRef = useRef<HTMLDivElement | null>(null)
+  const [qualityMenuOpen, setQualityMenuOpen] = useState(false)
+  const qualityMenuRef = useRef<HTMLDivElement | null>(null)
+  const [speedMenuOpen, setSpeedMenuOpen] = useState(false)
+  const speedMenuRef = useRef<HTMLDivElement | null>(null)
   const hideTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
   const controlsHoveredRef = useRef(false)
   const isScrubbingRef = useRef(false)
   const subtitleMenuOpenRef = useRef(false)
+  const qualityMenuOpenRef = useRef(false)
+  const speedMenuOpenRef = useRef(false)
   const danmakuOpenRef = useRef(false)
   const playlistOpenRef = useRef(false)
   const pendingSeekRef = useRef<number | null>(null)
@@ -157,7 +200,11 @@ export function PlayerControls({
   const seekApplyTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
   const seekHintTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
   const lastSeekAtRef = useRef(0)
+  const playbackRateRef = useRef(normalizePlaybackRate(playbackRateProp))
+  const playbackRateHintTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
+  const lastPlaybackRateAtRef = useRef(0)
   const [seekHint, setSeekHint] = useState<SeekHint | null>(null)
+  const [playbackRateHint, setPlaybackRateHint] = useState<number | null>(null)
   const [stageEl, setStageEl] = useState<HTMLElement | null>(null)
 
   useEffect(() => {
@@ -172,6 +219,14 @@ export function PlayerControls({
     subtitleMenuOpenRef.current = subtitleMenuOpen
   }, [subtitleMenuOpen])
 
+  useEffect(() => {
+    qualityMenuOpenRef.current = qualityMenuOpen
+  }, [qualityMenuOpen])
+
+  useEffect(() => {
+    speedMenuOpenRef.current = speedMenuOpen
+  }, [speedMenuOpen])
+
   useEffect(() => {
     danmakuOpenRef.current = danmakuOpen
   }, [danmakuOpen])
@@ -184,6 +239,10 @@ export function PlayerControls({
     durationRef.current = duration
   }, [duration])
 
+  useEffect(() => {
+    playbackRateRef.current = normalizePlaybackRate(playbackRateProp)
+  }, [playbackRateProp])
+
   useEffect(() => {
     setStageEl(container())
   }, [container])
@@ -199,17 +258,33 @@ export function PlayerControls({
     setMuted(next === 0)
   }, [video, volumeProp])
 
-  // 点击控制栏外部时关闭字幕菜单
+  // 倍速由播放页按用户持久化；配置加载、切换剧集或切换播放源后同步到当前 video。
   useEffect(() => {
-    if (!subtitleMenuOpen) return
+    const el = video()
+    if (!el) return
+    const next = normalizePlaybackRate(playbackRateProp)
+    if (Math.abs(el.playbackRate - next) > 0.001) {
+      el.playbackRate = next
+    }
+  }, [video, playbackRateProp])
+
+  // 点击控制栏外部时关闭字幕/画质/倍速菜单
+  useEffect(() => {
+    if (!subtitleMenuOpen && !qualityMenuOpen && !speedMenuOpen) return
     const onDocClick = (e: MouseEvent) => {
       if (subtitleMenuRef.current && !subtitleMenuRef.current.contains(e.target as Node)) {
         setSubtitleMenuOpen(false)
       }
+      if (qualityMenuRef.current && !qualityMenuRef.current.contains(e.target as Node)) {
+        setQualityMenuOpen(false)
+      }
+      if (speedMenuRef.current && !speedMenuRef.current.contains(e.target as Node)) {
+        setSpeedMenuOpen(false)
+      }
     }
     document.addEventListener('mousedown', onDocClick)
     return () => document.removeEventListener('mousedown', onDocClick)
-  }, [subtitleMenuOpen])
+  }, [subtitleMenuOpen, qualityMenuOpen, speedMenuOpen])
 
   // 播放时 3 秒无操作自动隐藏控制栏；暂停/悬停/拖动进度条/打开菜单时保持显示。
   // 监听挂在整个播放器舞台容器（data-player-stage）上，避免光标移到控制栏时因离开视频画面而误触发 mouseleave。
@@ -225,6 +300,8 @@ export function PlayerControls({
         !controlsHoveredRef.current &&
         !isScrubbingRef.current &&
         !subtitleMenuOpenRef.current &&
+        !qualityMenuOpenRef.current &&
+        !speedMenuOpenRef.current &&
         !danmakuOpenRef.current &&
         !playlistOpenRef.current
       ) {
@@ -233,6 +310,8 @@ export function PlayerControls({
             !controlsHoveredRef.current &&
             !isScrubbingRef.current &&
             !subtitleMenuOpenRef.current &&
+            !qualityMenuOpenRef.current &&
+            !speedMenuOpenRef.current &&
             !danmakuOpenRef.current &&
             !playlistOpenRef.current
           ) {
@@ -335,7 +414,7 @@ export function PlayerControls({
 
   // 当悬停或菜单状态改变时，更新控制栏计时器
   useEffect(() => {
-    if (controlsHovered || isScrubbing || subtitleMenuOpen || danmakuOpen || playlistOpen) {
+    if (controlsHovered || isScrubbing || subtitleMenuOpen || qualityMenuOpen || speedMenuOpen || danmakuOpen || playlistOpen) {
       onUiVisibleChange(true)
       if (hideTimerRef.current) clearTimeout(hideTimerRef.current)
     } else {
@@ -345,7 +424,7 @@ export function PlayerControls({
         hideTimerRef.current = setTimeout(() => onUiVisibleChange(false), 3000)
       }
     }
-  }, [controlsHovered, isScrubbing, subtitleMenuOpen, danmakuOpen, playlistOpen, onUiVisibleChange, video])
+  }, [controlsHovered, isScrubbing, subtitleMenuOpen, qualityMenuOpen, speedMenuOpen, danmakuOpen, playlistOpen, onUiVisibleChange, video])
 
   const togglePlay = () => {
     const el = video()
@@ -354,6 +433,30 @@ export function PlayerControls({
     else el.pause()
   }
 
+  const changePlaybackRate = useCallback((next: number) => {
+    const normalized = normalizePlaybackRate(next)
+    playbackRateRef.current = normalized
+    onPlaybackRateChange?.(normalized)
+    setPlaybackRateHint(normalized)
+    if (playbackRateHintTimerRef.current) {
+      clearTimeout(playbackRateHintTimerRef.current)
+    }
+    playbackRateHintTimerRef.current = setTimeout(() => {
+      setPlaybackRateHint(null)
+      playbackRateHintTimerRef.current = null
+    }, PLAYBACK_RATE_HINT_MS)
+  }, [onPlaybackRateChange])
+
+  const commitPlaybackRate = useCallback(() => {
+    onPlaybackRateCommit?.(playbackRateRef.current)
+  }, [onPlaybackRateCommit])
+
+  const selectPlaybackRate = useCallback((next: number) => {
+    const normalized = normalizePlaybackRate(next)
+    changePlaybackRate(normalized)
+    onPlaybackRateCommit?.(normalized)
+  }, [changePlaybackRate, onPlaybackRateCommit])
+
   const applyAbsoluteSeek = useCallback(
     (absolute: number) => {
       const el = video()
@@ -409,6 +512,7 @@ export function PlayerControls({
       controlsHoveredRef.current ||
       isScrubbingRef.current ||
       subtitleMenuOpenRef.current ||
+      qualityMenuOpenRef.current ||
       danmakuOpenRef.current ||
       playlistOpenRef.current
     ) {
@@ -419,6 +523,7 @@ export function PlayerControls({
         !controlsHoveredRef.current &&
         !isScrubbingRef.current &&
         !subtitleMenuOpenRef.current &&
+        !qualityMenuOpenRef.current &&
         !danmakuOpenRef.current &&
         !playlistOpenRef.current
       ) {
@@ -427,7 +532,7 @@ export function PlayerControls({
     }, 3000)
   }, [onUiVisibleChange, video])
 
-  const queueRelativeSeek = useCallback((delta: number) => {
+  const queueRelativeSeek = useCallback((delta: number, immediate: boolean) => {
     const el = video()
     if (!el) return
     if (!seekBurstRef.current) {
@@ -462,6 +567,16 @@ export function PlayerControls({
 
     if (seekHintTimerRef.current) clearTimeout(seekHintTimerRef.current)
     seekHintTimerRef.current = setTimeout(() => setSeekHint(null), SEEK_HINT_MS)
+    if (immediate) {
+      if (seekApplyTimerRef.current) {
+        clearTimeout(seekApplyTimerRef.current)
+        seekApplyTimerRef.current = null
+      }
+      const burst = seekBurstRef.current
+      seekBurstRef.current = null
+      applySeekRef.current(burst.base + burst.delta)
+      return
+    }
     if (seekApplyTimerRef.current) clearTimeout(seekApplyTimerRef.current)
     seekApplyTimerRef.current = setTimeout(() => {
       const burst = seekBurstRef.current
@@ -475,23 +590,47 @@ export function PlayerControls({
   useEffect(() => {
     const onKey = (e: KeyboardEvent) => {
       if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) return
-      if (isEditableTarget(e.target)) return
+      if (shouldIgnorePlayerSeekShortcut(e.target)) return
+      if (e.key === 'ArrowUp' || e.key === 'ArrowDown') {
+        e.preventDefault()
+        const now = Date.now()
+        if (e.repeat && now - lastPlaybackRateAtRef.current < PLAYBACK_RATE_REPEAT_MS) return
+        lastPlaybackRateAtRef.current = now
+        changePlaybackRate(
+          stepPlaybackRate(playbackRateRef.current, e.key === 'ArrowUp' ? 1 : -1),
+        )
+        return
+      }
       if (e.key !== 'ArrowLeft' && e.key !== 'ArrowRight') return
       e.preventDefault()
       const now = Date.now()
       if (e.repeat && now - lastSeekAtRef.current < SEEK_REPEAT_MS) return
+      const immediate = !e.repeat && now - lastSeekAtRef.current >= SEEK_APPLY_MS
       lastSeekAtRef.current = now
       e.preventDefault()
-      queueRelativeSeek(e.key === 'ArrowLeft' ? -SEEK_STEP_SEC : SEEK_STEP_SEC)
+      queueRelativeSeek(e.key === 'ArrowLeft' ? -SEEK_STEP_SEC : SEEK_STEP_SEC, immediate)
     }
-    window.addEventListener('keydown', onKey)
-    return () => window.removeEventListener('keydown', onKey)
-  }, [queueRelativeSeek])
+    window.addEventListener('keydown', onKey, true)
+    return () => window.removeEventListener('keydown', onKey, true)
+  }, [changePlaybackRate, queueRelativeSeek])
+
+  useEffect(() => {
+    const onKeyUp = (e: KeyboardEvent) => {
+      if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) return
+      if (e.key !== 'ArrowUp' && e.key !== 'ArrowDown') return
+      if (shouldIgnorePlayerSeekShortcut(e.target)) return
+      e.preventDefault()
+      commitPlaybackRate()
+    }
+    window.addEventListener('keyup', onKeyUp, true)
+    return () => window.removeEventListener('keyup', onKeyUp, true)
+  }, [commitPlaybackRate])
 
   useEffect(() => {
     return () => {
       if (seekApplyTimerRef.current) clearTimeout(seekApplyTimerRef.current)
       if (seekHintTimerRef.current) clearTimeout(seekHintTimerRef.current)
+      if (playbackRateHintTimerRef.current) clearTimeout(playbackRateHintTimerRef.current)
     }
   }, [])
 
@@ -549,6 +688,11 @@ export function PlayerControls({
     (selectedSubtitle.delivery === 'webvtt' || selectedSubtitle.delivery === 'ass')
   const canAdjustSelectedSubtitle = selectedSubtitle?.delivery === 'webvtt'
   const usesOriginalASS = selectedSubtitle?.delivery === 'ass'
+  const selectedQualityLabel = qualities.find((quality) => quality.id === selectedQuality)?.label ?? ''
+  const qualityGroups = [
+    { key: 'cloud', label: '115 云端', items: qualities.filter((quality) => quality.source !== 'local') },
+    { key: 'local', label: '本地 HLS', items: qualities.filter((quality) => quality.source === 'local') },
+  ].filter((group) => group.items.length > 0)
 
   const seekOverlay = seekHint && stageEl
     ? createPortal(
@@ -580,9 +724,24 @@ export function PlayerControls({
       )
     : null
 
+  const playbackRateOverlay = playbackRateHint && stageEl
+    ? createPortal(
+        <div className="pointer-events-none absolute inset-0 z-30 flex items-center justify-center">
+          <div className="flex items-center gap-2 rounded-full bg-black/65 px-5 py-3 text-white shadow-lg backdrop-blur-sm">
+            <Timer size={22} />
+            <span className="text-sm font-semibold tabular-nums">
+              {formatPlaybackRate(playbackRateHint)} 倍速
+            </span>
+          </div>
+        </div>,
+        stageEl,
+      )
+    : null
+
   return (
     <>
     {seekOverlay}
+    {playbackRateOverlay}
     <div
       className={`pointer-events-auto absolute inset-x-0 bottom-0 z-20 bg-gradient-to-t from-black/80 via-black/40 to-transparent px-3 pb-3 pt-14 transition-opacity duration-300 ${
         uiVisible ? 'opacity-100' : 'pointer-events-none opacity-0'
@@ -633,6 +792,7 @@ export function PlayerControls({
         <div className="order-2 flex min-w-0 basis-full items-center gap-2 sm:order-none sm:basis-auto sm:flex-1">
           <input
             type="range"
+            data-player-seek-range="true"
             min={0}
             max={duration || 0}
             step={0.1}
@@ -660,10 +820,120 @@ export function PlayerControls({
           </button>
         )}
 
+        {showQuality && qualities.length > 0 && onSelectQuality && (
+          <div className="relative" ref={qualityMenuRef}>
+            <button
+              onClick={() => {
+                setSubtitleMenuOpen(false)
+                setSpeedMenuOpen(false)
+                setQualityMenuOpen((v) => !v)
+              }}
+              className="flex items-center gap-1 rounded-full p-1.5 transition hover:bg-white/15"
+              title="画质"
+            >
+              <Gauge size={18} className={qualityMenuOpen ? 'text-rose-400' : 'text-white/80'} />
+              <span className="hidden text-[10px] font-medium text-white/80 sm:inline">
+                {selectedQualityLabel || '画质'}
+              </span>
+            </button>
+            {qualityMenuOpen && (
+              <div className="absolute bottom-11 right-0 z-30 min-w-48 overflow-hidden rounded-xl border border-white/15 bg-black/85 p-1 shadow-2xl backdrop-blur">
+                {qualityGroups.map((group) => (
+                  <div key={group.key}>
+                    <p className="px-3 pb-1 pt-2 text-[10px] uppercase tracking-wide text-white/40">
+                      {group.label}
+                    </p>
+                    {group.items.map((quality) => {
+                      const current = quality.id === selectedQuality
+                      return (
+                        <button
+                          key={`${quality.source}-${quality.id}`}
+                          type="button"
+                          onClick={() => {
+                            onSelectQuality(quality)
+                            setQualityMenuOpen(false)
+                          }}
+                          className={`flex w-full items-center gap-2 rounded-lg px-3 py-1.5 text-left text-xs transition ${
+                            current
+                              ? 'text-rose-400 hover:bg-white/10'
+                              : quality.requires_vip
+                                ? 'text-white/55 hover:bg-white/10'
+                                : 'text-white/85 hover:bg-white/10'
+                          }`}
+                          title={quality.note || quality.label}
+                        >
+                          <span className="truncate">{quality.label}</span>
+                          {quality.requires_transcode && (
+                            <span className="ml-auto flex items-center gap-1 rounded bg-white/10 px-1.5 py-0.5 text-[9px] text-amber-300">
+                              <Loader2 size={10} />
+                              转码
+                            </span>
+                          )}
+                          {quality.requires_vip && <Lock size={11} className="ml-auto text-amber-300" />}
+                          {current && !quality.requires_transcode && (
+                            <Check size={13} className="ml-auto text-rose-400" />
+                          )}
+                        </button>
+                      )
+                    })}
+                  </div>
+                ))}
+              </div>
+            )}
+          </div>
+        )}
+
+        <div className="relative" ref={speedMenuRef}>
+          <button
+            onClick={() => {
+              setSubtitleMenuOpen(false)
+              setQualityMenuOpen(false)
+              setSpeedMenuOpen((v) => !v)
+            }}
+            className="flex items-center gap-1 rounded-full p-1.5 transition hover:bg-white/15"
+            title="播放速度（↑/↓ 调节）"
+          >
+            <Timer size={18} className={speedMenuOpen ? 'text-rose-400' : 'text-white/80'} />
+            <span className="text-[10px] font-semibold tabular-nums text-white/80">
+              {formatPlaybackRate(playbackRateProp)}
+            </span>
+          </button>
+          {speedMenuOpen && (
+            <div className="absolute bottom-11 right-0 z-30 min-w-36 overflow-hidden rounded-xl border border-white/15 bg-black/85 p-1 shadow-2xl backdrop-blur">
+              <p className="px-3 pb-1 pt-2 text-[10px] uppercase tracking-wide text-white/40">
+                播放速度
+              </p>
+              {PLAYBACK_RATE_OPTIONS.map((rate) => {
+                const current = normalizePlaybackRate(playbackRateProp) === rate
+                return (
+                  <button
+                    key={rate}
+                    type="button"
+                    onClick={() => {
+                      selectPlaybackRate(rate)
+                      setSpeedMenuOpen(false)
+                    }}
+                    className={`flex w-full items-center gap-2 rounded-lg px-3 py-1.5 text-left text-xs transition ${
+                      current ? 'text-rose-400 hover:bg-white/10' : 'text-white/85 hover:bg-white/10'
+                    }`}
+                  >
+                    <span className="tabular-nums">{formatPlaybackRate(rate)}</span>
+                    {current && <Check size={13} className="ml-auto text-rose-400" />}
+                  </button>
+                )
+              })}
+            </div>
+          )}
+        </div>
+
         {subs.length > 0 && (
           <div className="relative" ref={subtitleMenuRef}>
             <button
-              onClick={() => setSubtitleMenuOpen((v) => !v)}
+              onClick={() => {
+                setQualityMenuOpen(false)
+                setSpeedMenuOpen(false)
+                setSubtitleMenuOpen((v) => !v)
+              }}
               className="rounded-full p-1.5 transition hover:bg-white/15"
               title="字幕"
             >
@@ -852,4 +1122,4 @@ export function PlayerControls({
     </div>
     </>
   )
-}
+}

web/src/hooks/useScrollMemory.test.ts

@@ -0,0 +1,51 @@
+import { shouldPersistScrollSample, shouldRememberScroll } from './useScrollMemory.ts'
+
+function check(name: string, condition: boolean) {
+  if (!condition) throw new Error(`useScrollMemory: ${name}`)
+}
+
+check('home remembers scroll', shouldRememberScroll('/'))
+check('library list remembers scroll', shouldRememberScroll('/libraries'))
+check('library detail remembers scroll', shouldRememberScroll('/library/lib-1'))
+check('media detail remembers scroll', shouldRememberScroll('/media/media-1'))
+check('settings does not remember scroll', !shouldRememberScroll('/settings'))
+check('player does not remember scroll', !shouldRememberScroll('/play/media-1'))
+
+check(
+  'route transition collapse is ignored',
+  !shouldPersistScrollSample({
+    current: 0,
+    lastSaved: 1800,
+    height: 400,
+    lastHeight: 4200,
+  }),
+)
+check(
+  'intentional scroll to top is persisted',
+  shouldPersistScrollSample({
+    current: 0,
+    lastSaved: 1800,
+    height: 4200,
+    lastHeight: 4200,
+  }),
+)
+check(
+  'normal downward scroll is persisted',
+  shouldPersistScrollSample({
+    current: 1900,
+    lastSaved: 1800,
+    height: 4200,
+    lastHeight: 4200,
+  }),
+)
+check(
+  'content growth still allows persist',
+  shouldPersistScrollSample({
+    current: 1800,
+    lastSaved: 1800,
+    height: 5200,
+    lastHeight: 4200,
+  }),
+)
+
+console.log('useScrollMemory.test.ts ok')

web/src/hooks/useScrollMemory.ts

@@ -0,0 +1,212 @@
+import { useLayoutEffect } from 'react'
+
+const SCROLL_STORAGE_PREFIX = 'mebox.scroll.'
+const scrollPositions = new Map<string, number>()
+
+function readScrollPosition(key: string): number {
+  const cached = scrollPositions.get(key)
+  if (cached !== undefined) return cached
+  if (typeof window === 'undefined') return 0
+  try {
+    const value = Number(window.sessionStorage.getItem(SCROLL_STORAGE_PREFIX + key))
+    if (Number.isFinite(value) && value >= 0) {
+      scrollPositions.set(key, value)
+      return value
+    }
+  } catch {
+    // sessionStorage 不可用时仍可使用内存缓存。
+  }
+  return 0
+}
+
+function writeScrollPosition(key: string, value: number): void {
+  const next = Math.max(0, Math.round(value))
+  scrollPositions.set(key, next)
+  if (typeof window === 'undefined') return
+  try {
+    window.sessionStorage.setItem(SCROLL_STORAGE_PREFIX + key, String(next))
+  } catch {
+    // 私密模式等场景忽略存储失败，不影响页面滚动。
+  }
+}
+
+export function shouldRememberScroll(pathname: string): boolean {
+  return (
+    pathname === '/' ||
+    pathname === '/libraries' ||
+    pathname.startsWith('/library/') ||
+    pathname.startsWith('/media/')
+  )
+}
+
+/**
+ * 路由切换时 Outlet 内容变矮，浏览器会把共享滚动容器的 scrollTop 钳低，
+ * 并可能同步触发 scroll 事件。这种“假滚动”不能写入存储，否则返回时永远回到顶部。
+ */
+export function shouldPersistScrollSample(input: {
+  current: number
+  lastSaved: number
+  height: number
+  lastHeight: number
+}): boolean {
+  const { current, lastSaved, height, lastHeight } = input
+  if (height + 1 < lastHeight && current < lastSaved) {
+    return false
+  }
+  return true
+}
+
+/**
+ * 记住列表页的滚动位置。页面内容会异步长高，因此恢复期间会监听内容高度，
+ * 直到目标位置可达；期间用户主动滚动会立即接管，避免和恢复逻辑抢滚动条。
+ */
+export function useScrollMemory(pathname: string, userKey = 'anonymous'): void {
+  useLayoutEffect(() => {
+    const el = document.getElementById('app-main-scroll')
+    if (!el) return
+
+    if (!shouldRememberScroll(pathname)) {
+      el.scrollTop = 0
+      return
+    }
+
+    const key = `${userKey}:${pathname}`
+    const saved = readScrollPosition(key)
+    let restoring = saved > 0
+    let observer: ResizeObserver | null = null
+    let restoreTimer: number | null = null
+    let restoreFrame = 0
+    let restorePumpUntil = 0
+    let lastSaved = saved
+    let lastHeight = el.scrollHeight
+
+    const stopRestore = () => {
+      if (restoreFrame) {
+        window.cancelAnimationFrame(restoreFrame)
+        restoreFrame = 0
+      }
+      if (restoreTimer != null) {
+        window.clearTimeout(restoreTimer)
+        restoreTimer = null
+      }
+      observer?.disconnect()
+      observer = null
+    }
+
+    const finishRestore = () => {
+      if (!restoring) return
+      restoring = false
+      stopRestore()
+      lastSaved = Math.round(el.scrollTop)
+      lastHeight = el.scrollHeight
+      writeScrollPosition(key, lastSaved)
+    }
+
+    const tryRestore = () => {
+      if (!restoring) return
+      const max = Math.max(0, el.scrollHeight - el.clientHeight)
+      const target = Math.min(saved, max)
+      if (target > 0 && Math.abs(el.scrollTop - target) > 1) {
+        el.scrollTop = target
+      }
+      if (target >= saved - 1) {
+        finishRestore()
+      }
+    }
+
+    const pumpRestore = () => {
+      if (!restoring) return
+      tryRestore()
+      if (restoring && performance.now() < restorePumpUntil) {
+        restoreFrame = window.requestAnimationFrame(pumpRestore)
+      } else {
+        restoreFrame = 0
+      }
+    }
+
+    const saveNow = () => {
+      if (restoring) return
+      const current = Math.round(el.scrollTop)
+      const height = el.scrollHeight
+      if (
+        !shouldPersistScrollSample({
+          current,
+          lastSaved,
+          height,
+          lastHeight,
+        })
+      ) {
+        lastHeight = height
+        return
+      }
+      lastHeight = height
+      if (current === lastSaved) return
+      lastSaved = current
+      writeScrollPosition(key, current)
+    }
+
+    const cancelRestore = () => {
+      if (!restoring) return
+      restoring = false
+      stopRestore()
+      lastSaved = Math.round(el.scrollTop)
+      lastHeight = el.scrollHeight
+      writeScrollPosition(key, lastSaved)
+    }
+
+    if (saved <= 0) {
+      el.scrollTop = 0
+    } else {
+      tryRestore()
+      if (restoring) {
+        const content = el.firstElementChild
+        if (typeof ResizeObserver !== 'undefined' && content instanceof HTMLElement) {
+          observer = new ResizeObserver(() => tryRestore())
+          observer.observe(content)
+        }
+        restorePumpUntil = performance.now() + 1000
+        restoreFrame = window.requestAnimationFrame(pumpRestore)
+        restoreTimer = window.setTimeout(finishRestore, 10000)
+      }
+    }
+
+    const onPointerDown = (event: PointerEvent) => {
+      if (event.target === el) {
+        cancelRestore()
+      }
+      saveNow()
+    }
+
+    const onKeyDown = (event: KeyboardEvent) => {
+      if (
+        event.key === 'PageDown' ||
+        event.key === 'PageUp' ||
+        event.key === 'Home' ||
+        event.key === 'End' ||
+        event.key === 'ArrowDown' ||
+        event.key === 'ArrowUp' ||
+        event.key === ' '
+      ) {
+        cancelRestore()
+      }
+      saveNow()
+    }
+
+    el.addEventListener('scroll', saveNow, { passive: true })
+    el.addEventListener('pointerdown', onPointerDown, true)
+    window.addEventListener('wheel', cancelRestore, { passive: true, capture: true })
+    window.addEventListener('touchstart', cancelRestore, { passive: true, capture: true })
+    window.addEventListener('keydown', onKeyDown, true)
+
+    return () => {
+      el.removeEventListener('scroll', saveNow)
+      el.removeEventListener('pointerdown', onPointerDown, true)
+      window.removeEventListener('wheel', cancelRestore, true)
+      window.removeEventListener('touchstart', cancelRestore, true)
+      window.removeEventListener('keydown', onKeyDown, true)
+      stopRestore()
+      // 清理时写入最后一次有效位置，避免依赖已被钳制的 el.scrollTop。
+      writeScrollPosition(key, lastSaved)
+    }
+  }, [pathname, userKey])
+}

web/src/index.css

@@ -430,7 +430,8 @@ video::cue(*) {
 
 .animate-overlay-in { animation: overlay-in 0.15s ease-out both; }
 .animate-drawer-in { animation: drawer-in 0.22s ease-out both; }
-.animate-page-in { animation: page-in 0.25s ease-out both; }
+/* 播放完成后不能保留 transform，否则长页面会成为 fixed 弹框的包含块。 */
+.animate-page-in { animation: page-in 0.25s ease-out backwards; }
 .animate-accordion-in { animation: accordion-in 0.18s ease-out both; }
 .animate-fade-slide-in { animation: fade-slide-in 0.2s ease-out both; }
 .animate-menu-in { animation: menu-in 0.15s ease-out both; }

web/src/pages/HomePage.tsx

@@ -151,33 +151,30 @@ export function HomePage() {
     )
   }, [])
 
-  // 3. 首屏只预取轮播和前三行所需的预览；入口卡片进入视口后再按批加载。
+  // 3. 首屏只预取轮播和前三行所需的预览；入口卡片进入视口后自行按批加载。
   useEffect(() => {
     if (sortedLibraries.length === 0) return
     const carouselLibIds = sortedLibraries
       .filter((l) => l.carousel_enabled === true)
       .map((l) => l.id)
     const topRowLibIds = sortedLibraries.slice(0, 3).map((l) => l.id)
-    // 入口网格仍然是一次展示 20 个库；没有自定义封面的库必须在首屏
-    // 立即拉预览，否则会先出现占位图标再补图，体感反而更慢。
-    const topGridLibIds = sortedLibraries
-      .slice(0, 20)
-      .filter((l) => !l.cover_url)
-      .map((l) => l.id)
     const shelfTargets = Array.from(new Set([...carouselLibIds, ...topRowLibIds]))
-    const shelfTargetSet = new Set(shelfTargets)
-    const gridTargets = topGridLibIds.filter((id) => !shelfTargetSet.has(id))
-    // 入口网格只需要 2 张封面，横向货架才需要 10 张。分开请求可以避免
-    // 为暂时不会出现的货架预取完整卡片窗口。
     void fetchPreviews(shelfTargets, 10)
-    void fetchPreviews(gridTargets, 2)
   }, [sortedLibraries, fetchPreviews])
 
   // 4. 媒体库展示行渐进流式加载：默认先检视前 3 个库，随向下滚动逐步检视后续库
   const INITIAL_ROWS = 3
   const STEP_ROWS = 2
   const [visibleTargetCount, setVisibleTargetCount] = useState(INITIAL_ROWS)
-  const sentinelRef = useRef<HTMLDivElement | null>(null)
+  const sentinelRef = useRef<HTMLButtonElement | null>(null)
+  const userScrolledRef = useRef(false)
+
+  const revealMoreLibraries = useCallback(() => {
+    setVisibleTargetCount((prev) => {
+      if (prev >= sortedLibraries.length) return prev
+      return Math.min(prev + STEP_ROWS, sortedLibraries.length)
+    })
+  }, [sortedLibraries.length])
 
   // 随 visibleTargetCount 增加，按需触发后续库的预览加载
   useEffect(() => {
@@ -201,12 +198,11 @@ export function HomePage() {
     if (!scrollParent) return
 
     const handleCheckBottom = () => {
+      if (scrollParent.scrollTop <= 0) return
+      userScrolledRef.current = true
       const remaining = scrollParent.scrollHeight - scrollParent.scrollTop - scrollParent.clientHeight
       if (remaining < 600) {
-        setVisibleTargetCount((prev) => {
-          if (prev >= sortedLibraries.length) return prev
-          return Math.min(prev + STEP_ROWS, sortedLibraries.length)
-        })
+        revealMoreLibraries()
       }
     }
 
@@ -218,11 +214,8 @@ export function HomePage() {
       observer = new IntersectionObserver(
         (entries) => {
           const [entry] = entries
-          if (entry?.isIntersecting) {
-            setVisibleTargetCount((prev) => {
-              if (prev >= sortedLibraries.length) return prev
-              return Math.min(prev + STEP_ROWS, sortedLibraries.length)
-            })
+          if (entry?.isIntersecting && userScrolledRef.current) {
+            revealMoreLibraries()
           }
         },
         {
@@ -234,15 +227,13 @@ export function HomePage() {
       observer.observe(sentinel)
     }
 
-    handleCheckBottom()
-
     return () => {
       scrollParent.removeEventListener('scroll', handleCheckBottom)
       if (observer) {
         observer.disconnect()
       }
     }
-  }, [visibleLibraries.length, hasMoreLibraries, sortedLibraries.length])
+  }, [hasMoreLibraries, revealMoreLibraries, visibleLibraries.length])
 
   // Quick lookup map for libraries
   const libraryMap = useMemo(() => {
@@ -333,7 +324,7 @@ export function HomePage() {
       )}
 
       {/* 4. 各媒体库内容展示行（向下滑动渐进流式加载，不受上方20个分页限制） */}
-      {visibleLibraries.length > 0 && (
+      {(visibleLibraries.length > 0 || hasMoreLibraries) && (
         <div className="space-y-10">
           {visibleLibraries.map((lib) => {
             const cards = libraryData[lib.id]?.cards || []
@@ -346,12 +337,17 @@ export function HomePage() {
             )
           })}
           {hasMoreLibraries && (
-            <div ref={sentinelRef} className="flex h-10 w-full items-center justify-center py-2 opacity-60">
+            <button
+              ref={sentinelRef}
+              type="button"
+              onClick={revealMoreLibraries}
+              className="flex h-10 w-full items-center justify-center py-2 opacity-60 transition-opacity hover:opacity-100"
+            >
               <div className="flex items-center gap-2 text-xs text-[var(--app-muted)]">
                 <div className="h-1.5 w-1.5 animate-ping rounded-full bg-brand-500" />
                 <span>加载更多媒体库…</span>
               </div>
-            </div>
+            </button>
           )}
         </div>
       )}

web/src/pages/HomePageSections.tsx

@@ -9,6 +9,7 @@ import {
   FolderOpen,
   Library as LibraryIcon,
   Music,
+  Pin,
   Play,
   PlayCircle,
   Sparkles,
@@ -355,11 +356,19 @@ export function HomeLibrariesSection({
   libraryData,
   libraryCounts,
   onNeedPreviews,
+  pinnedIds = [],
+  onTogglePin,
+  showAllLink = true,
+  title = '媒体库',
 }: {
   libraries: Library[]
   libraryData?: Record<string, { cards: SeriesCard[]; items: Media[]; total: number }>
   libraryCounts: Record<string, number>
   onNeedPreviews?: (ids: string[], limit?: number) => void
+  pinnedIds?: string[]
+  onTogglePin?: (libraryId: string) => void
+  showAllLink?: boolean
+  title?: string
 }) {
   const PAGE_SIZE = 20
   const [currentPage, setCurrentPage] = useState(1)
@@ -382,7 +391,7 @@ export function HomeLibrariesSection({
           <div>
             <div className="flex items-center gap-2">
               <h2 className="font-display text-xl font-extrabold tracking-tight text-[var(--app-text)]">
-                媒体库
+                {title}
               </h2>
               {libraries.length > PAGE_SIZE && (
                 <span className="rounded-md border border-[var(--app-border)] bg-[var(--app-panel-soft)] px-1.5 py-0.5 text-[11px] font-semibold text-[var(--app-muted)]">
@@ -396,41 +405,45 @@ export function HomeLibrariesSection({
           </div>
         </div>
 
-        <div className="flex items-center gap-3">
-          {totalPages > 1 && (
-            <div className="flex items-center gap-2 rounded-xl border border-[var(--app-border)] bg-[var(--app-panel-soft)] px-2 py-1 text-xs">
-              <button
-                type="button"
-                onClick={() => setCurrentPage((p) => Math.max(1, p - 1))}
-                disabled={effectivePage <= 1}
-                className="rounded-lg p-1 text-[var(--app-muted)] hover:bg-[var(--app-hover)] hover:text-[var(--app-text)] disabled:opacity-30 disabled:hover:bg-transparent disabled:hover:text-[var(--app-muted)] transition-colors"
-                title="上一页"
-              >
-                <ChevronLeft size={14} />
-              </button>
-              <span className="font-mono text-xs font-semibold text-[var(--app-subtle)]">
-                {effectivePage} / {totalPages}
-              </span>
-              <button
-                type="button"
-                onClick={() => setCurrentPage((p) => Math.min(totalPages, p + 1))}
-                disabled={effectivePage >= totalPages}
-                className="rounded-lg p-1 text-[var(--app-muted)] hover:bg-[var(--app-hover)] hover:text-[var(--app-text)] disabled:opacity-30 disabled:hover:bg-transparent disabled:hover:text-[var(--app-muted)] transition-colors"
-                title="下一页"
-              >
-                <ChevronRight size={14} />
-              </button>
-            </div>
-          )}
+        {(totalPages > 1 || showAllLink) && (
+          <div className="flex items-center gap-3">
+            {totalPages > 1 && (
+              <div className="flex items-center gap-2 rounded-xl border border-[var(--app-border)] bg-[var(--app-panel-soft)] px-2 py-1 text-xs">
+                <button
+                  type="button"
+                  onClick={() => setCurrentPage((p) => Math.max(1, p - 1))}
+                  disabled={effectivePage <= 1}
+                  className="rounded-lg p-1 text-[var(--app-muted)] hover:bg-[var(--app-hover)] hover:text-[var(--app-text)] disabled:opacity-30 disabled:hover:bg-transparent disabled:hover:text-[var(--app-muted)] transition-colors"
+                  title="上一页"
+                >
+                  <ChevronLeft size={14} />
+                </button>
+                <span className="font-mono text-xs font-semibold text-[var(--app-subtle)]">
+                  {effectivePage} / {totalPages}
+                </span>
+                <button
+                  type="button"
+                  onClick={() => setCurrentPage((p) => Math.min(totalPages, p + 1))}
+                  disabled={effectivePage >= totalPages}
+                  className="rounded-lg p-1 text-[var(--app-muted)] hover:bg-[var(--app-hover)] hover:text-[var(--app-text)] disabled:opacity-30 disabled:hover:bg-transparent disabled:hover:text-[var(--app-muted)] transition-colors"
+                  title="下一页"
+                >
+                  <ChevronRight size={14} />
+                </button>
+              </div>
+            )}
 
-          <Link
-            to="/libraries"
-            className="group inline-flex items-center gap-1 text-xs font-bold text-[var(--app-subtle)] transition-colors hover:text-brand-500"
-          >
-            <span>全部媒体库</span>
-            <ArrowRight size={14} className="transition-transform group-hover:translate-x-0.5" />
-          </Link>
-        </div>
+            {showAllLink && (
+              <Link
+                to="/libraries"
+                className="group inline-flex items-center gap-1 text-xs font-bold text-[var(--app-subtle)] transition-colors hover:text-brand-500"
+              >
+                <span>全部媒体库</span>
+                <ArrowRight size={14} className="transition-transform group-hover:translate-x-0.5" />
+              </Link>
+            )}
+          </div>
+        )}
       </div>
 
       <div className="grid grid-cols-2 gap-4 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-5 2xl:grid-cols-6">
@@ -440,6 +453,8 @@ export function HomeLibrariesSection({
             library={lib}
             count={libraryCounts[lib.id] ?? 0}
             cards={libraryData?.[lib.id]?.cards ?? []}
+            pinned={pinnedIds.includes(lib.id)}
+            onTogglePin={onTogglePin ? () => onTogglePin(lib.id) : undefined}
             onVisible={() => {
               if (!lib.cover_url) {
                 queuePreview(lib.id)
@@ -452,73 +467,100 @@ export function HomeLibrariesSection({
   )
 }
 
-function HomeLibraryCard({
+export function HomeLibraryCard({
   library,
   count,
   cards,
+  pinned = false,
+  onTogglePin,
   onVisible,
 }: {
   library: Library
   count: number
   cards: SeriesCard[]
+  pinned?: boolean
+  onTogglePin?: () => void
   onVisible: () => void
 }) {
-  const ref = useInViewOnce<HTMLAnchorElement>(onVisible)
+  const ref = useInViewOnce<HTMLDivElement>(onVisible)
   const artwork = getLibraryArtworks(library, cards)
 
   return (
-    <Link
+    <div
       ref={ref}
-      to={`/library/${library.id}`}
-      className="group relative flex flex-col justify-between overflow-hidden rounded-2xl border border-[var(--app-border)] bg-[var(--app-panel)] p-3 transition-all duration-300 hover:-translate-y-1 hover:border-brand-500/50 hover:bg-[var(--app-hover)]/40 hover:shadow-lg hover:shadow-brand-500/10"
-      title={library.name}
+      className={`group relative h-full overflow-hidden rounded-2xl border bg-[var(--app-panel)] transition-all duration-300 hover:-translate-y-1 hover:border-brand-500/50 hover:bg-[var(--app-hover)]/40 hover:shadow-lg hover:shadow-brand-500/10 ${
+        pinned ? 'border-brand-500/60 ring-1 ring-brand-500/20' : 'border-[var(--app-border)]'
+      }`}
     >
-      <div
-        className={`relative h-28 w-full overflow-hidden rounded-xl bg-[linear-gradient(135deg,var(--app-panel-soft),var(--app-panel))] shadow-inner ${
-          artwork.length > 1 ? 'grid grid-cols-2 gap-0.5' : ''
-        }`}
+      <Link
+        to={`/library/${library.id}`}
+        className="flex h-full flex-col justify-between p-3"
+        title={library.name}
       >
-        {artwork.length > 0 ? (
-          artwork.map(({ src, version }, index) => (
-            <img
-              key={`${src}-${index}`}
-              src={imageURL(
-                src,
-                version,
-                library.cover_url ? undefined : { maxWidth: 480, maxHeight: 320, quality: 78 },
-              )}
-              alt=""
-              loading="lazy"
-              referrerPolicy="no-referrer"
-              className="h-full w-full object-cover transition-transform duration-500 group-hover:scale-105"
-              onError={(event) => {
-                event.currentTarget.style.visibility = 'hidden'
-              }}
-            />
-          ))
-        ) : (
-          <div className="flex h-full w-full items-center justify-center text-brand-500">
-            {TYPE_ICONS[library.type] || <FolderOpen size={28} />}
-          </div>
-        )}
-
-        <div className="absolute top-2 right-2 rounded-lg border border-white/20 bg-black/60 px-2 py-0.5 text-[10px] font-bold text-white backdrop-blur-md shadow-sm">
-          {TYPE_LABELS[library.type] || '自定义'}
-        </div>
-      </div>
-
-      <div className="mt-3 flex flex-col justify-between">
-        <h3
-          className="line-clamp-2 break-words font-display text-sm font-bold text-[var(--app-text)] group-hover:text-brand-500"
-          title={library.name}
+        <div
+          className={`relative h-28 w-full overflow-hidden rounded-xl bg-[linear-gradient(135deg,var(--app-panel-soft),var(--app-panel))] shadow-inner ${
+            artwork.length > 1 ? 'grid grid-cols-2 gap-0.5' : ''
+          }`}
         >
-          {library.name}
-        </h3>
-        <p className="mt-0.5 text-xs text-[var(--app-muted)]">
-          {count > 0 ? `${count} 部媒体` : '暂无条目'}
-        </p>
-      </div>
-    </Link>
+          {artwork.length > 0 ? (
+            artwork.map(({ src, version }, index) => (
+              <img
+                key={`${src}-${index}`}
+                src={imageURL(
+                  src,
+                  version,
+                  library.cover_url ? undefined : { maxWidth: 480, maxHeight: 320, quality: 78 },
+                )}
+                alt=""
+                loading="lazy"
+                referrerPolicy="no-referrer"
+                className="h-full w-full object-cover transition-transform duration-500 group-hover:scale-105"
+                onError={(event) => {
+                  event.currentTarget.style.visibility = 'hidden'
+                }}
+              />
+            ))
+          ) : (
+            <div className="flex h-full w-full items-center justify-center text-brand-500">
+              {TYPE_ICONS[library.type] || <FolderOpen size={28} />}
+            </div>
+          )}
+
+          <div className="absolute top-2 right-2 rounded-lg border border-white/20 bg-black/60 px-2 py-0.5 text-[10px] font-bold text-white backdrop-blur-md shadow-sm">
+            {TYPE_LABELS[library.type] || '自定义'}
+          </div>
+        </div>
+
+        <div className="mt-3 flex flex-col justify-between">
+          <h3
+            className="line-clamp-2 break-words font-display text-sm font-bold text-[var(--app-text)] group-hover:text-brand-500"
+            title={library.name}
+          >
+            {library.name}
+          </h3>
+          <p className="mt-0.5 text-xs text-[var(--app-muted)]">
+            {count > 0 ? `${count} 部媒体` : '暂无条目'}
+          </p>
+        </div>
+      </Link>
+
+      {onTogglePin && (
+        <button
+          type="button"
+          onClick={onTogglePin}
+          className={`absolute left-2 top-2 z-10 rounded-lg border p-1.5 shadow-sm backdrop-blur-md transition-all duration-200 opacity-100 sm:pointer-events-none sm:opacity-0 sm:group-hover:pointer-events-auto sm:group-hover:opacity-100 sm:group-focus-within:pointer-events-auto sm:group-focus-within:opacity-100 sm:focus-visible:pointer-events-auto sm:focus-visible:opacity-100 ${
+            pinned
+              ? 'border-brand-400/50 bg-brand-500 text-white'
+              : 'border-white/20 bg-black/60 text-white hover:bg-black/75'
+          }`}
+          title={pinned ? '取消置顶' : '置顶媒体库'}
+          aria-label={pinned ? '取消置顶' : '置顶媒体库'}
+          aria-pressed={pinned}
+        >
+          <Pin size={13} className={pinned ? 'fill-current' : ''} />
+        </button>
+      )}
+    </div>
   )
 }
 

web/src/pages/LibrariesPageSections.tsx

@@ -1,33 +1,10 @@
-import { useEffect, useMemo, useRef, useState, type ReactNode } from 'react'
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { Link } from 'react-router-dom'
-import { ArrowRight, ChevronLeft, ChevronRight, Film, FolderOpen, Library as LibraryIcon, Music, Pin, PlayCircle, RefreshCw, Sparkles, Tv } from 'lucide-react'
+import { Library as LibraryIcon, RefreshCw, Sparkles } from 'lucide-react'
 
-import { imageURL } from '../api/client'
 import { EpisodeArtworkToggle } from '../components/EpisodeArtworkToggle'
-import { MediaCard } from '../components/MediaCard'
-import { useInViewOnce } from '../hooks/useInViewOnce'
-import { useLazyPreviewBatch } from '../hooks/useLazyPreviewBatch'
-import { seriesCardLink } from '../utils/groupSeries'
-import { libraryDisplayPath } from './libraryDisplayModel'
-import { libraryArtworkItems, type LibraryPreview } from './librariesPageModel'
-import { isLibraryPinned } from '../utils/pinnedLibraries'
-
-const TYPE_ICONS: Record<string, ReactNode> = {
-  movie: <Film size={18} />,
-  tv: <Tv size={18} />,
-  anime: <PlayCircle size={18} />,
-  variety: <Tv size={18} />,
-  music: <Music size={18} />,
-  adult: <Film size={18} />,
-}
-const TYPE_LABELS: Record<string, string> = {
-  movie: '电影',
-  tv: '剧集',
-  anime: '动漫',
-  variety: '综艺',
-  music: '音乐',
-  adult: '成人',
-}
+import { HomeLibrariesSection, HomeLibraryRowSection } from './HomePageSections'
+import type { LibraryPreview } from './librariesPageModel'
 
 export function LibrariesHeader({
   previewCount,
@@ -96,9 +73,9 @@ export function LibrariesHeader({
 
 export function LibrariesEmptyState() {
   return (
-    <div className="flex flex-col items-center justify-center rounded-3xl border border-dashed border-sand-200 bg-white py-24 text-center">
-      <LibraryIcon className="mb-4 h-12 w-12 text-gray-400" />
-      <p className="text-sm text-ink-50">暂无媒体库，请到管理后台添加目录。</p>
+    <div className="flex flex-col items-center justify-center rounded-3xl border border-dashed border-[var(--app-border)] bg-[var(--app-panel)] py-24 text-center">
+      <LibraryIcon className="mb-4 h-12 w-12 text-[var(--app-muted)]" />
+      <p className="text-sm text-[var(--app-muted)]">暂无媒体库，请到管理后台添加目录。</p>
     </div>
   )
 }
@@ -114,33 +91,35 @@ export function LibrariesContent({
   onTogglePin: (libraryId: string) => void
   onNeedPreviews?: (ids: string[], limit?: number) => void
 }) {
-  const pinnedCount = previews.filter((preview) => isLibraryPinned(preview.library.id, pinnedIds)).length
-  const queuePreview = useLazyPreviewBatch((ids) => onNeedPreviews?.(ids, 2))
-
-  // 下方媒体库货架支持向下滑动渐进流式加载：默认先展示前 3 个库货架，
-  // 随着用户向下滑动接近底部，通过 IntersectionObserver 动态解锁后续媒体库货架。
+  // 下方媒体库货架继续按需解锁：首屏先展示前 3 个，滚动接近底部再加载 2 个。
   const INITIAL_SHELVES = 3
   const STEP_SHELVES = 2
   const [visibleCount, setVisibleCount] = useState(INITIAL_SHELVES)
-  const sentinelRef = useRef<HTMLDivElement | null>(null)
+  const sentinelRef = useRef<HTMLButtonElement | null>(null)
+  const userScrolledRef = useRef(false)
+
+  const revealMoreShelves = useCallback(() => {
+    setVisibleCount((prev) => {
+      if (prev >= previews.length) return prev
+      return Math.min(prev + STEP_SHELVES, previews.length)
+    })
+  }, [previews.length])
 
   useEffect(() => {
-    const currentTargets = previews.slice(0, visibleCount).map((p) => p.library.id)
+    const currentTargets = previews.slice(0, visibleCount).map((preview) => preview.library.id)
     onNeedPreviews?.(currentTargets, 10)
   }, [previews, visibleCount, onNeedPreviews])
 
-  // 底部哨兵监听与滚动双保险（触底解锁后续媒体库货架）
   useEffect(() => {
     const scrollParent = document.getElementById('app-main-scroll')
     if (!scrollParent) return
 
     const handleCheckBottom = () => {
+      if (scrollParent.scrollTop <= 0) return
+      userScrolledRef.current = true
       const remaining = scrollParent.scrollHeight - scrollParent.scrollTop - scrollParent.clientHeight
       if (remaining < 600) {
-        setVisibleCount((prev) => {
-          if (prev >= previews.length) return prev
-          return Math.min(prev + STEP_SHELVES, previews.length)
-        })
+        revealMoreShelves()
       }
     }
 
@@ -152,11 +131,8 @@ export function LibrariesContent({
       observer = new IntersectionObserver(
         (entries) => {
           const [entry] = entries
-          if (entry?.isIntersecting) {
-            setVisibleCount((prev) => {
-              if (prev >= previews.length) return prev
-              return Math.min(prev + STEP_SHELVES, previews.length)
-            })
+          if (entry?.isIntersecting && userScrolledRef.current) {
+            revealMoreShelves()
           }
         },
         {
@@ -168,286 +144,74 @@ export function LibrariesContent({
       observer.observe(sentinel)
     }
 
-    handleCheckBottom()
-
     return () => {
       scrollParent.removeEventListener('scroll', handleCheckBottom)
-      if (observer) {
-        observer.disconnect()
-      }
+      if (observer) observer.disconnect()
     }
-  }, [visibleCount, previews.length])
-
-  const visiblePreviews = useMemo(() => {
-    return previews.slice(0, visibleCount)
-  }, [previews, visibleCount])
-
-  const ENTRY_PAGE_SIZE = 20
-  const [entryPage, setEntryPage] = useState(1)
-  const totalEntryPages = Math.max(1, Math.ceil(previews.length / ENTRY_PAGE_SIZE))
-  const effectiveEntryPage = Math.min(entryPage, totalEntryPages)
-
-  const pagedPreviews = useMemo<LibraryPreview[]>(() => {
-    const start = (effectiveEntryPage - 1) * ENTRY_PAGE_SIZE
-    return previews.slice(start, start + ENTRY_PAGE_SIZE)
-  }, [previews, effectiveEntryPage])
-
-  // 入口网格首屏展示前 20 个库；没有自定义封面的库需要立即拉预览，否则卡片会先渲染占位图标再补图。
-  useEffect(() => {
-    const ids = pagedPreviews.filter((preview) => !preview.library.cover_url).map((preview) => preview.library.id)
-    if (ids.length > 0) {
-      onNeedPreviews?.(ids, 2)
-    }
-  }, [pagedPreviews, onNeedPreviews])
+  }, [revealMoreShelves, visibleCount, previews.length])
 
+  const visiblePreviews = useMemo(
+    () => previews.slice(0, visibleCount),
+    [previews, visibleCount],
+  )
+  const libraries = useMemo(() => previews.map((preview) => preview.library), [previews])
+  const libraryData = useMemo(
+    () =>
+      Object.fromEntries(
+        previews.map((preview) => [
+          preview.library.id,
+          { cards: preview.cards, items: [], total: preview.total },
+        ]),
+      ),
+    [previews],
+  )
+  const libraryCounts = useMemo(
+    () =>
+      Object.fromEntries(
+        previews.map((preview) => [preview.library.id, preview.total]),
+      ),
+    [previews],
+  )
 
   return (
     <>
-      <section className="space-y-4">
-        <div className="flex flex-wrap items-center justify-between gap-3">
-          <div>
-            <div className="flex items-center gap-2">
-              <h2 className="font-display text-2xl font-bold text-ink-600">媒体库入口</h2>
-              {previews.length > ENTRY_PAGE_SIZE && (
-                <span className="rounded-md border border-sand-200 bg-sand-50 px-2 py-0.5 text-xs font-semibold text-sand-700">
-                  共 {previews.length} 个 · 每页 {ENTRY_PAGE_SIZE} 个
-                </span>
-              )}
-            </div>
-            <p className="text-sm text-ink-50">
-              按目录进入完整媒体库；下方每个目录也会直接展示最新内容。
-              {pinnedCount > 0 ? ` 已置顶 ${pinnedCount} 个媒体库。` : ' 点击卡片右上角图钉可置顶常用媒体库。'}
-            </p>
-          </div>
-
-          {totalEntryPages > 1 && (
-            <div className="flex items-center gap-2 rounded-xl border border-sand-200 bg-white px-2.5 py-1 text-xs shadow-sm">
-              <button
-                type="button"
-                onClick={() => setEntryPage((p) => Math.max(1, p - 1))}
-                disabled={effectiveEntryPage <= 1}
-                className="rounded-lg p-1 text-ink-50 hover:bg-sand-100 hover:text-ink-600 disabled:opacity-30 disabled:hover:bg-transparent disabled:hover:text-ink-50 transition-colors"
-                title="上一页"
-              >
-                <ChevronLeft size={14} />
-              </button>
-              <span className="font-mono text-xs font-semibold text-ink-600">
-                {effectiveEntryPage} / {totalEntryPages}
-              </span>
-              <button
-                type="button"
-                onClick={() => setEntryPage((p) => Math.min(totalEntryPages, p + 1))}
-                disabled={effectiveEntryPage >= totalEntryPages}
-                className="rounded-lg p-1 text-ink-50 hover:bg-sand-100 hover:text-ink-600 disabled:opacity-30 disabled:hover:bg-transparent disabled:hover:text-ink-50 transition-colors"
-                title="下一页"
-              >
-                <ChevronRight size={14} />
-              </button>
-            </div>
-          )}
-        </div>
-        <div className="grid grid-cols-1 gap-3 sm:grid-cols-2 sm:gap-4 xl:grid-cols-3">
-          {pagedPreviews.map((preview) => (
-            <div
-              key={preview.library.id}
-              className="animate-page-in"
-            >
-              <LibraryEntryCard
-                preview={preview}
-                pinned={isLibraryPinned(preview.library.id, pinnedIds)}
-                onTogglePin={() => onTogglePin(preview.library.id)}
-                onVisible={() => {
-                  if (!preview.library.cover_url) {
-                    queuePreview(preview.library.id)
-                  }
-                }}
-              />
-            </div>
-          ))}
-        </div>
-      </section>
+      <HomeLibrariesSection
+        libraries={libraries}
+        libraryData={libraryData}
+        libraryCounts={libraryCounts}
+        onNeedPreviews={onNeedPreviews}
+        pinnedIds={pinnedIds}
+        onTogglePin={onTogglePin}
+        showAllLink={false}
+        title="媒体库入口"
+      />
 
       {visiblePreviews.length > 0 && (
-        <section className="space-y-6">
+        <section className="space-y-10">
           {visiblePreviews.map((preview) => (
-            <div
-              key={preview.library.id}
-              className="animate-page-in"
-            >
-              <LibraryShelf
-                preview={preview}
-                pinned={isLibraryPinned(preview.library.id, pinnedIds)}
+            <div key={preview.library.id} className="animate-page-in">
+              <HomeLibraryRowSection
+                library={preview.library}
+                cards={preview.cards}
               />
             </div>
           ))}
 
           {visibleCount < previews.length && (
-            <div ref={sentinelRef} className="flex h-10 w-full items-center justify-center py-2 opacity-60">
+            <button
+              ref={sentinelRef}
+              type="button"
+              onClick={revealMoreShelves}
+              className="flex h-10 w-full items-center justify-center py-2 opacity-60 transition-opacity hover:opacity-100"
+            >
               <div className="flex items-center gap-2 text-xs text-[var(--app-muted)]">
                 <div className="h-1.5 w-1.5 animate-ping rounded-full bg-brand-500" />
                 <span>加载更多媒体库货架…</span>
               </div>
-            </div>
+            </button>
           )}
         </section>
       )}
     </>
   )
 }
-
-function LibraryEntryCard({
-  preview,
-  pinned,
-  onTogglePin,
-  onVisible,
-}: {
-  preview: LibraryPreview
-  pinned: boolean
-  onTogglePin: () => void
-  onVisible?: () => void
-}) {
-  const library = preview.library
-  const ref = useInViewOnce<HTMLDivElement>(onVisible ?? (() => {}))
-  const artwork = library.cover_url
-    ? [{ src: library.cover_url, version: library.updated_at }]
-    : libraryArtworkItems(preview.cards)
-  const displayPath = libraryDisplayPath(library.path)
-
-  return (
-    <div
-      ref={ref}
-      className={
-        'group relative flex overflow-hidden rounded-2xl sm:rounded-3xl border bg-white p-2.5 sm:p-3 shadow-card transition-all hover:-translate-y-0.5 hover:shadow-card-hover ' +
-        (pinned ? 'border-brand-300 ring-1 ring-brand-100' : 'border-sand-200 hover:border-brand-200')
-      }
-    >
-      <button
-        type="button"
-        onClick={(event) => {
-          event.preventDefault()
-          event.stopPropagation()
-          onTogglePin()
-        }}
-        className={
-          'absolute right-2 top-2 z-10 rounded-full border p-1.5 transition ' +
-          (pinned
-            ? 'border-brand-200 bg-brand-50 text-brand-600 hover:bg-brand-100'
-            : 'border-sand-200 bg-white/95 text-sand-500 opacity-0 hover:bg-gray-50 hover:text-brand-600 group-hover:opacity-100')
-        }
-        title={pinned ? '取消置顶' : '置顶媒体库'}
-        aria-label={pinned ? '取消置顶' : '置顶媒体库'}
-        aria-pressed={pinned}
-      >
-        <Pin size={14} className={pinned ? 'fill-current' : ''} />
-      </button>
-      <Link
-        to={`/library/${library.id}`}
-        className="flex min-w-0 flex-1"
-        title={library.name}
-      >
-      <div className={`grid h-20 w-24 sm:h-24 sm:w-36 shrink-0 gap-1 overflow-hidden rounded-xl sm:rounded-2xl bg-[linear-gradient(135deg,#fff7ed,#f8fafc)] ${artwork.length > 1 ? 'grid-cols-2' : 'grid-cols-1'}`}>
-        {artwork.length > 0 ? (
-          artwork.map(({ src, version }, index) => (
-            <img
-              key={`${src}-${index}`}
-              src={imageURL(
-                src,
-                version,
-                library.cover_url ? undefined : { maxWidth: 400, maxHeight: 300, quality: 78 },
-              )}
-              alt=""
-              loading="lazy"
-              referrerPolicy="no-referrer"
-              className="h-full w-full object-cover"
-              onError={(event) => { event.currentTarget.style.visibility = 'hidden' }}
-            />
-          ))
-        ) : (
-          <div className="col-span-2 flex h-full items-center justify-center text-brand-500">
-            {TYPE_ICONS[library.type] ?? <FolderOpen size={28} className="sm:h-8 sm:w-8" />}
-          </div>
-        )}
-      </div>
-      <div className="flex min-w-0 flex-1 flex-col justify-between px-3 sm:px-4 py-0.5 sm:py-1">
-        <div>
-          <div className="mb-1 flex items-center justify-between gap-1.5 pr-8">
-            <span className="inline-flex rounded-full bg-sand-100 px-2 py-0.5 text-[10px] font-bold text-sand-600">
-              {TYPE_LABELS[library.type] ?? library.type}
-            </span>
-            <span className="text-[11px] font-semibold text-sand-500 sm:hidden">
-              {preview.total.toLocaleString()} 个条目
-            </span>
-          </div>
-          <h2
-            className="line-clamp-2 break-words font-display text-sm font-bold leading-snug text-ink-600 group-hover:text-brand-600 sm:text-base lg:text-lg sm:font-black"
-            title={library.name}
-          >
-            {library.name}
-            {pinned ? <span className="ml-1.5 align-middle text-[10px] font-bold text-brand-600">置顶</span> : null}
-          </h2>
-          <p className="mt-0.5 line-clamp-1 break-all text-[11px] text-ink-50 sm:mt-1 sm:text-xs" title={library.path}>
-            {displayPath}
-          </p>
-        </div>
-        <div className="mt-1 flex items-center justify-between text-xs font-bold sm:mt-0">
-          <span className="hidden text-sand-600 sm:inline">{preview.total.toLocaleString()} 个条目</span>
-          <span className="ml-auto inline-flex items-center gap-0.5 text-[11px] text-brand-600 sm:text-xs">
-            浏览全部 <ArrowRight size={12} />
-          </span>
-        </div>
-      </div>
-      </Link>
-    </div>
-  )
-}
-
-function LibraryShelf({ preview, pinned }: { preview: LibraryPreview; pinned?: boolean }) {
-  const library = preview.library
-  const cards = preview.cards.slice(0, 10)
-  const displayPath = libraryDisplayPath(library.path)
-
-  return (
-    <section className="rounded-2xl sm:rounded-[1.7rem] border border-sand-200 bg-white/75 p-3.5 sm:p-4 shadow-card">
-      <div className="mb-3 sm:mb-4 flex flex-wrap items-end justify-between gap-2 sm:gap-3">
-        <div className="min-w-0">
-          <div className="mb-1 inline-flex items-center gap-1.5 sm:gap-2 rounded-full bg-brand-50 px-2 sm:px-2.5 py-0.5 sm:py-1 text-[10px] sm:text-[11px] font-bold text-brand-700">
-            {TYPE_ICONS[library.type] ?? <LibraryIcon size={14} />}
-            {TYPE_LABELS[library.type] ?? library.type}
-          </div>
-          <h2
-            className="line-clamp-2 break-words font-display text-xl sm:text-2xl font-black text-ink-600"
-            title={library.name}
-          >
-            {library.name}
-            {pinned ? <span className="ml-2 align-middle text-xs font-bold text-brand-600">置顶</span> : null}
-          </h2>
-          <p className="mt-1 line-clamp-1 break-all text-xs text-ink-50">
-            <span title={library.path}>{displayPath}</span> · {preview.total.toLocaleString()} 个条目 · 最新 {cards.length} 部
-          </p>
-        </div>
-        <Link to={`/library/${library.id}`} className="btn-outline !px-3 !py-1.5 text-xs sm:!px-4 sm:!py-2.5 sm:text-sm shrink-0">
-          浏览全部
-          <ArrowRight size={14} />
-        </Link>
-      </div>
-
-      {cards.length > 0 ? (
-        <div className="flex gap-4 overflow-x-auto pb-2 pr-1">
-          {cards.map((card) => (
-            <div key={card.key} className="w-[9.5rem] shrink-0 lg:w-[10rem] 2xl:w-[10.5rem]">
-              <MediaCard
-                media={card.rep}
-                count={card.count}
-                linkTo={seriesCardLink(card)}
-              />
-            </div>
-          ))}
-        </div>
-      ) : (
-        <div className="rounded-2xl border border-dashed border-sand-200 bg-white px-6 py-10 text-center text-sm text-ink-50">
-          该目录暂无可展示内容，扫描媒体库后会出现在这里。
-        </div>
-      )}
-    </section>
-  )
-}

web/src/pages/LibraryPage.tsx

@@ -124,6 +124,7 @@ export function LibraryPage() {
   })
 
   const {
+    resolvingSeries,
     selectedEpisodes,
     visibleEpisodes,
     selectedSeriesEpisodes,
@@ -132,6 +133,7 @@ export function LibraryPage() {
     handleSeriesClick,
     clearSelectedSeries,
   } = useLibrarySeriesSelection({
+    libraryID: id,
     items,
     seriesEpisodeItems,
     isSeriesLibrary,
@@ -209,7 +211,9 @@ export function LibraryPage() {
     return <>{actions}</>
   }, [canFavorite, favouriteBusyID, handleToggleFavourite, isFavourite, movieActions])
 
-  if (loading) {
+  // resolvingSeries：深链目标剧集不在已加载的一页卡片里，正在按 key
+  // 单独解析。此时先显示加载态，避免先渲染整个媒体库列表再跳走。
+  if (loading || resolvingSeries) {
     return (
       <div className="flex items-center justify-center py-32">
         <motion.div animate={{ opacity: [0.4, 1, 0.4] }} transition={{ repeat: Infinity, duration: 2 }} className="flex items-center gap-3">

web/src/pages/PlayerPage.tsx

@@ -4,7 +4,7 @@ import type Hls from 'hls.js'
 import toast from 'react-hot-toast'
 
 import { mediaAPI, libraryAPI } from '../api/library'
-import { hlsURL, postPlaybackProgressKeepalive, stopHLSJob, streamURL } from '../api/client'
+import { cloudHlsURL, hlsURL, postPlaybackProgressKeepalive, stopHLSJob, streamURL } from '../api/client'
 import {
   danmakuAPI,
   type DanmakuAnime,
@@ -17,8 +17,9 @@ import { subtitlesAPI, type SubtitleTrack } from '../api/subtitles'
 import { systemAPI } from '../api/system'
 import { profileAPI } from '../api/profile'
 import { useAuthStore } from '../stores/auth'
-import type { Media } from '../types'
+import type { Media, PlaybackInfo, PlaybackQuality } from '../types'
 import { getSeriesKey, seriesTitleFromPath } from '../utils/groupSeries'
+import { normalizePlaybackRate } from '../utils/playbackRate'
 import { isRemoteEmbyID } from '../utils/remoteEmby'
 import {
   normalizeSubtitleChineseMode,
@@ -109,8 +110,13 @@ export function PlayerPage() {
   const [playerVolume, setPlayerVolume] = useState(() =>
     normalizePlayerVolume(authUser?.player_volume),
   )
+  const [playerPlaybackRate, setPlayerPlaybackRate] = useState(() =>
+    normalizePlaybackRate(authUser?.player_playback_rate),
+  )
   const persistedSubtitleChineseModeRef = useRef(subtitleChineseMode)
   const playerVolumeTouchedRef = useRef(false)
+  const playerPlaybackRateTouchedRef = useRef(false)
+  const playerPlaybackRateSaveSeqRef = useRef(0)
   const subtitlePreferenceTouchedRef = useRef(false)
   const subtitlePreferenceSaveQueueRef = useRef<Promise<void>>(Promise.resolve())
   const [hlsUnavailable, setHlsUnavailable] = useState(false)
@@ -124,6 +130,16 @@ export function PlayerPage() {
   const [initialSeekDone, setInitialSeekDone] = useState(false)
   // HLS session source offset: playlist t=0 maps to this absolute second.
   const [hlsStartSec, setHlsStartSec] = useState(0)
+  // 统一播放能力：115 提供 direct → cloud_hls → local_hls，其它源 direct → local_hls。
+  const [playbackInfo, setPlaybackInfo] = useState<PlaybackInfo | null>(null)
+  const [hlsSource, setHlsSource] = useState<'cloud' | 'local'>('local')
+  const [selectedQuality, setSelectedQuality] = useState('')
+  const [cloudWaiting, setCloudWaiting] = useState(false)
+  const [cloudWaitMessage, setCloudWaitMessage] = useState('')
+  const [cloudWaitStartedAt, setCloudWaitStartedAt] = useState(0)
+  const cloudPollTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
+  const cloudRetryRef = useRef(5)
+  const pendingSeekRef = useRef<number | null>(null)
 
   // 弹幕控制：状态来自 /api/danmaku/config 初始值，用户在面板里实时调整。
   const [danmakuOpen, setDanmakuOpen] = useState(false)
@@ -235,6 +251,10 @@ export function PlayerPage() {
         if (!playerVolumeTouchedRef.current) {
           setPlayerVolume(volume)
         }
+        const playbackRate = normalizePlaybackRate(cfg.playback_rate)
+        if (!playerPlaybackRateTouchedRef.current) {
+          setPlayerPlaybackRate(playbackRate)
+        }
         setDanmakuEnabled(cfg.enabled)
         setDanmakuOpacity(Number(cfg.opacity) || 1)
         setDanmakuFontSize(Number(cfg.font_size) || 24)
@@ -245,6 +265,10 @@ export function PlayerPage() {
           const current = useAuthStore.getState().user
           if (current) setAuthUser({ ...current, player_volume: volume })
         }
+        if (!playerPlaybackRateTouchedRef.current) {
+          const current = useAuthStore.getState().user
+          if (current) setAuthUser({ ...current, player_playback_rate: playbackRate })
+        }
       })
       .catch(() => {
         // 配置读取失败时保持本地默认值，不影响播放。
@@ -279,6 +303,34 @@ export function PlayerPage() {
     [setAuthUser],
   )
 
+  const changePlayerPlaybackRate = useCallback((next: number) => {
+    playerPlaybackRateTouchedRef.current = true
+    setPlayerPlaybackRate(normalizePlaybackRate(next))
+  }, [])
+
+  const commitPlayerPlaybackRate = useCallback(
+    (next: number) => {
+      playerPlaybackRateTouchedRef.current = true
+      const playbackRate = normalizePlaybackRate(next)
+      setPlayerPlaybackRate(playbackRate)
+      const saveSeq = ++playerPlaybackRateSaveSeqRef.current
+      void danmakuAPI
+        .updateSettings({ playback_rate: playbackRate })
+        .then((cfg) => {
+          if (saveSeq !== playerPlaybackRateSaveSeqRef.current) return
+          const saved = normalizePlaybackRate(cfg.playback_rate)
+          setPlayerPlaybackRate(saved)
+          const current = useAuthStore.getState().user
+          if (current) setAuthUser({ ...current, player_playback_rate: saved })
+        })
+        .catch(() => {
+          if (saveSeq !== playerPlaybackRateSaveSeqRef.current) return
+          toast.error('倍速保存失败，请重试')
+        })
+    },
+    [setAuthUser],
+  )
+
   const saveDanmakuAdvanced = useCallback(
     async (values: { source: string; appId: string; appKey: string; clearAppKey: boolean }) => {
       const patch: DanmakuSettingsPatch = {
@@ -407,6 +459,17 @@ export function PlayerPage() {
     setMedia(null)
     setLoadError('')
     setHlsStartSec(0)
+    setPlaybackInfo(null)
+    setHlsSource('local')
+    setSelectedQuality('')
+    setCloudWaiting(false)
+    setCloudWaitMessage('')
+    setCloudWaitStartedAt(0)
+    pendingSeekRef.current = null
+    if (cloudPollTimerRef.current) {
+      clearTimeout(cloudPollTimerRef.current)
+      cloudPollTimerRef.current = null
+    }
     setDanmakuEpisodeId(null)
     setDanmakuCandidates([])
     setDanmakuAlternatives([])
@@ -478,6 +541,117 @@ export function PlayerPage() {
   // Depend on media.id (not the media object): refreshing duration after
   // MANIFEST_PARSED must not remount HLS or it storms EnsureJob / DELETE.
   const mediaId = media?.id
+  const playbackProvider = playbackInfo?.provider
+
+  // 加载统一播放能力：115 云端清晰度 + 本地 HLS 清晰度。
+  useEffect(() => {
+    if (!mediaId) return
+    let cancelled = false
+    mediaAPI
+      .playbackInfo(mediaId)
+      .then((info) => {
+        if (cancelled) return
+        setPlaybackInfo(info)
+        cloudRetryRef.current = Math.max(3, info.transcode.retry_after_sec || 5)
+        setSelectedQuality((prev) => {
+          if (prev && findPlaybackQualityById(info, prev)) return prev
+          return info.default_quality || info.local_qualities?.[0]?.id || ''
+        })
+      })
+      .catch(() => {
+        if (!cancelled) setPlaybackInfo(null)
+      })
+    return () => {
+      cancelled = true
+    }
+  }, [mediaId])
+
+  useEffect(() => {
+    cloudRetryRef.current = Math.max(3, playbackInfo?.transcode.retry_after_sec || 5)
+  }, [playbackInfo])
+
+  const switchToLocalHLS = useCallback(
+    (position = 0) => {
+      setHlsSource('local')
+      setCloudWaiting(false)
+      setSelectedQuality((prev) => {
+        if (playbackInfo?.local_qualities?.some((quality) => quality.id === prev)) return prev
+        return defaultLocalQualityId(playbackInfo)
+      })
+      if (position > 2) setHlsStartSec(position)
+      setPlaybackMode('hls')
+    },
+    [playbackInfo, setPlaybackMode],
+  )
+
+  const startCloudTranscode = useCallback(
+    async (definition: number) => {
+      if (!mediaId) return
+      try {
+        const info = await mediaAPI.startCloudTranscode(mediaId, definition)
+        setPlaybackInfo(info)
+        if (info.transcode.state === 'ready') {
+          setCloudWaiting(false)
+          setCloudWaitMessage('')
+          setHlsSource('cloud')
+          setPlaybackMode('hls')
+          return
+        }
+        setCloudWaiting(true)
+        setCloudWaitMessage(info.transcode.message || '115 正在转码…')
+        setCloudWaitStartedAt(Date.now())
+      } catch {
+        switchToLocalHLS()
+        toast.error('115 云端转码触发失败，已切换本地转码')
+      }
+    },
+    [mediaId, setPlaybackMode, switchToLocalHLS],
+  )
+
+  // 云端转码等待：按后端建议间隔轮询，完成后自动切到云 HLS。
+  useEffect(() => {
+    if (!cloudWaiting || !mediaId) return
+    let cancelled = false
+    const poll = async () => {
+      if (cancelled) return
+      if (cloudWaitStartedAt > 0 && Date.now() - cloudWaitStartedAt > 10 * 60 * 1000) {
+        switchToLocalHLS()
+        toast.error('115 云端转码等待超时，已切换本地转码')
+        return
+      }
+      try {
+        const definition = Number(selectedQuality) || undefined
+        const info = await mediaAPI.playbackInfo(mediaId, definition)
+        if (cancelled) return
+        setPlaybackInfo(info)
+        cloudRetryRef.current = Math.max(3, info.transcode.retry_after_sec || 5)
+        if (info.transcode.state === 'ready') {
+          setCloudWaiting(false)
+          setCloudWaitMessage('')
+          setHlsSource('cloud')
+          setPlaybackMode('hls')
+          return
+        }
+        if (info.transcode.state === 'unavailable') {
+          switchToLocalHLS()
+          toast.error(info.transcode.message || '115 云端转码不可用，已切换本地转码')
+          return
+        }
+        setCloudWaitMessage(info.transcode.message || '115 正在转码…')
+        cloudPollTimerRef.current = setTimeout(poll, cloudRetryRef.current * 1000)
+      } catch {
+        cloudPollTimerRef.current = setTimeout(poll, 5000)
+      }
+    }
+    cloudPollTimerRef.current = setTimeout(poll, cloudRetryRef.current * 1000)
+    return () => {
+      cancelled = true
+      if (cloudPollTimerRef.current) {
+        clearTimeout(cloudPollTimerRef.current)
+        cloudPollTimerRef.current = null
+      }
+    }
+  }, [cloudWaiting, cloudWaitStartedAt, mediaId, selectedQuality, setPlaybackMode, switchToLocalHLS])
 
   // 直连播放只发现外挂字幕；只有 HLS 模式需要探测可烧录的内嵌字幕。
   useEffect(() => {
@@ -524,7 +698,14 @@ export function PlayerPage() {
     const video = ref.current
     const durationSec = currentMedia.duration_sec || 0
     if (mode === 'hls') {
-      const url = hlsURL(mediaId, hlsStartSec, activeBurnedSubtitleStream)
+      if (hlsSource === 'cloud' && cloudWaiting) {
+        teardownHls()
+        return
+      }
+      const url =
+        hlsSource === 'cloud'
+          ? cloudHlsURL(mediaId, selectedQuality)
+          : hlsURL(mediaId, hlsStartSec, activeBurnedSubtitleStream, selectedQuality)
       void import('hls.js').then(({ default: HlsCtor }) => {
         if (cancelled || !ref.current) return
         if (HlsCtor.isSupported()) {
@@ -545,6 +726,15 @@ export function PlayerPage() {
           hls.loadSource(url)
           hls.attachMedia(video)
           hls.on(HlsCtor.Events.MANIFEST_PARSED, () => {
+            if (pendingSeekRef.current !== null) {
+              const target = pendingSeekRef.current
+              pendingSeekRef.current = null
+              try {
+                video.currentTime = target
+              } catch {
+                // ignore
+              }
+            }
             void video.play().catch(() => undefined)
             // .strm 入库时常缺 duration；转码启动时会补探测，这里刷新一次给进度条总时长。
             if (durationSec > 0) return
@@ -558,7 +748,19 @@ export function PlayerPage() {
           })
           hls.on(HlsCtor.Events.ERROR, (_, data) => {
             if (data.fatal) {
+              if (hlsSource === 'cloud') {
+                const position = ref.current?.currentTime || 0
+                setHlsUnavailable(false)
+                switchToLocalHLS(position)
+                toast.error('115 云端播放失败，切换本地转码')
+                return
+              }
               setHlsUnavailable(true)
+              if (playbackProvider === 'cloud115') {
+                setPlayerError('115 云端和本地转码均不可用，请检查账号授权或稍后重试。')
+                toast.error('115 云端和本地转码均不可用')
+                return
+              }
               setPlayerError('HLS 转码不可用，正在尝试直接播放原始文件。若出现有画面无声音，通常是 MKV/AC3/EAC3 音轨需要配置本机 ffmpeg 转码为 AAC。')
               toast.error('HLS 转码失败，尝试切换到直接播放')
               setPlaybackMode('direct')
@@ -614,31 +816,36 @@ export function PlayerPage() {
   }, [
     activeBurnedSubtitleStream,
     clearFallbackTimer,
+    cloudWaiting,
+    hlsSource,
     hlsUnavailable,
     hlsStartSec,
     mediaId,
     mode,
+    playbackProvider,
+    selectedQuality,
     setPlaybackMode,
+    switchToLocalHLS,
     teardownHls,
   ])
 
   // Stop host ffmpeg when leaving this HLS player. The keepalive request also
   // survives route navigation while the component is being torn down.
   useEffect(() => {
-    if (!mediaId || mode !== 'hls') return
+    if (!mediaId || mode !== 'hls' || hlsSource !== 'local') return
     return () => {
       stopHLSJob(mediaId)
     }
-  }, [mediaId, mode])
+  }, [hlsSource, mediaId, mode])
 
   // React cleanup is not guaranteed when a tab/window closes. pagehide fires
   // while the document can still dispatch a keepalive request.
   useEffect(() => {
-    if (!mediaId || mode !== 'hls') return
+    if (!mediaId || mode !== 'hls' || hlsSource !== 'local') return
     const stopOnPageExit = () => stopHLSJob(mediaId)
     window.addEventListener('pagehide', stopOnPageExit)
     return () => window.removeEventListener('pagehide', stopOnPageExit)
-  }, [mediaId, mode])
+  }, [hlsSource, mediaId, mode])
 
   // 自动拉取已有的播放进度并恢复播放位置
   useEffect(() => {
@@ -944,6 +1151,11 @@ export function PlayerPage() {
   }, [goBack, prevEpisode, nextEpisode, handlePrevEpisode, handleNextEpisode, playlistOpen, danmakuOpen])
 
   const isDirectStream = isDirectStreamMedia(media)
+  const qualityOptions =
+    playbackInfo?.provider === 'cloud115'
+      ? [...(playbackInfo.cloud_qualities ?? []), ...(playbackInfo.local_qualities ?? [])]
+      : (playbackInfo?.local_qualities ?? [])
+  const showQuality = mode !== 'direct' && qualityOptions.length > 0
 
   // 没有外挂字幕且第一条内嵌字幕是图片时，默认轨需要通过 HLS 烧录。
   useEffect(() => {
@@ -975,9 +1187,36 @@ export function PlayerPage() {
     const next = mode === 'hls' ? 'direct' : 'hls'
     if (next === 'hls') {
       setHlsStartSec(0)
+      const preferred =
+        playbackInfo?.provider === 'cloud115'
+          ? findPlaybackQualityById(playbackInfo, selectedQuality) ??
+            findPlaybackQualityById(playbackInfo, playbackInfo.default_quality)
+          : undefined
+      if (preferred?.source === 'cloud') {
+        setHlsSource('cloud')
+        if (preferred.available) {
+          setCloudWaiting(false)
+        } else {
+          setCloudWaiting(true)
+          setCloudWaitMessage(preferred.note || `正在等待 115 转码 ${preferred.label}…`)
+          void startCloudTranscode(Number(preferred.id) || 4)
+        }
+      } else {
+        switchToLocalHLS()
+      }
+    } else {
+      setCloudWaiting(false)
     }
     setPlaybackMode(next)
-  }, [isDirectStream, mode, setPlaybackMode])
+  }, [
+    isDirectStream,
+    mode,
+    playbackInfo,
+    selectedQuality,
+    setPlaybackMode,
+    startCloudTranscode,
+    switchToLocalHLS,
+  ])
 
   const handleSeekAbsolute = useCallback(
     (absoluteSec: number) => {
@@ -1019,6 +1258,10 @@ export function PlayerPage() {
       toast.error('图片字幕需要开启 HLS 转码后才能显示')
       return
     }
+    if (nextTrack?.delivery === 'burn') {
+      // PGS 等图片字幕必须走本地 FFmpeg 烧录，不能交给云端 HLS。
+      switchToLocalHLS(ref.current?.currentTime || 0)
+    }
     const burnChanged =
       oldTrack?.delivery === 'burn' || nextTrack?.delivery === 'burn'
     if (burnChanged && mode === 'hls' && ref.current) {
@@ -1029,7 +1272,42 @@ export function PlayerPage() {
       setHlsStartSec(ref.current?.currentTime || 0)
       setPlaybackMode('hls')
     }
-  }, [directOnly, hlsStartSec, isDirectStream, mode, setPlaybackMode, subs, subtitleIndex])
+  }, [directOnly, hlsStartSec, isDirectStream, mode, setPlaybackMode, subs, subtitleIndex, switchToLocalHLS])
+
+  const selectPlaybackQuality = useCallback(
+    (quality: PlaybackQuality) => {
+      const video = ref.current
+      const position = video?.currentTime || 0
+      if (quality.source === 'original') {
+        setCloudWaiting(false)
+        setHlsSource('local')
+        setPlaybackMode('direct')
+        return
+      }
+      if (quality.source === 'cloud') {
+        setSelectedQuality(quality.id)
+        setHlsSource('cloud')
+        if (quality.available) {
+          setCloudWaiting(false)
+          setCloudWaitMessage('')
+          if (position > 2) pendingSeekRef.current = position
+          setPlaybackMode('hls')
+        } else {
+          setCloudWaiting(true)
+          setCloudWaitMessage(quality.note || `正在等待 115 转码 ${quality.label}…`)
+          void startCloudTranscode(Number(quality.id) || 4)
+        }
+        return
+      }
+      setSelectedQuality(quality.id)
+      setHlsSource('local')
+      setCloudWaiting(false)
+      setCloudWaitMessage('')
+      if (position > 2) setHlsStartSec(position)
+      setPlaybackMode('hls')
+    },
+    [setPlaybackMode, startCloudTranscode],
+  )
 
   const changeSubtitleChineseMode = useCallback(
     (nextMode: SubtitleChineseMode) => {
@@ -1097,18 +1375,45 @@ export function PlayerPage() {
       } else if (directOnly) {
         setPlayerError('直接播放失败。当前为「客户端直连解码」模式，宿主机不转码；请使用支持该编码/封装的播放器（如 Infuse / VLC / Emby 客户端）播放，或关闭直连解码模式。')
         toast.error('直接播放失败（客户端直连解码模式）')
+      } else if (playbackInfo?.provider === 'cloud115') {
+        const preferred =
+          findPlaybackQualityById(playbackInfo, selectedQuality) ??
+          findPlaybackQualityById(playbackInfo, playbackInfo.default_quality)
+        if (preferred?.source === 'cloud' && preferred.available) {
+          setCloudWaiting(false)
+          setHlsSource('cloud')
+          setPlaybackMode('hls')
+        } else if (preferred?.source === 'cloud') {
+          setHlsSource('cloud')
+          setCloudWaiting(true)
+          setCloudWaitMessage(preferred.note || `正在等待 115 转码 ${preferred.label}…`)
+          void startCloudTranscode(Number(preferred.id) || 4)
+        } else {
+          switchToLocalHLS(current?.currentTime || 0)
+        }
       } else if (hlsUnavailable) {
         setPlayerError('直接播放失败，且 HLS 转码不可用。请检查文件是否存在，或配置本机 ffmpeg 后使用 HLS 转码播放。')
         toast.error('直接播放失败，HLS 转码不可用')
       } else {
         toast.error('直接播放失败，切换到 HLS 转码')
-        setPlaybackMode('hls')
+        switchToLocalHLS(current?.currentTime || 0)
       }
     }
 
     clearFallbackTimer()
     fallbackTimerRef.current = setTimeout(fallbackDirectPlay, 1500)
-  }, [clearFallbackTimer, directOnly, hlsUnavailable, mediaId, mode, setPlaybackMode])
+  }, [
+    clearFallbackTimer,
+    directOnly,
+    hlsUnavailable,
+    mediaId,
+    mode,
+    playbackInfo,
+    selectedQuality,
+    setPlaybackMode,
+    startCloudTranscode,
+    switchToLocalHLS,
+  ])
 
   const changeSubtitlePosition = useCallback((nextPosition: SubtitlePosition) => {
     setSubtitlePosition(nextPosition)
@@ -1161,6 +1466,9 @@ export function PlayerPage() {
         playerVolume={playerVolume}
         onPlayerVolumeChange={changePlayerVolume}
         onPlayerVolumeCommit={commitPlayerVolume}
+        playerPlaybackRate={playerPlaybackRate}
+        onPlayerPlaybackRateChange={changePlayerPlaybackRate}
+        onPlayerPlaybackRateCommit={commitPlayerPlaybackRate}
         danmakuEnabled={danmakuEnabled}
         danmakuOpacity={danmakuOpacity}
         danmakuFontSize={danmakuFontSize}
@@ -1183,8 +1491,14 @@ export function PlayerPage() {
         hasPlaylist={playlistEpisodes.length > 0}
         onTogglePlaylist={togglePlaylistOpen}
         knownDuration={media?.duration_sec || 0}
-        streamOffset={mode === 'hls' ? hlsStartSec : 0}
-        onSeekAbsolute={mode === 'hls' ? handleSeekAbsolute : undefined}
+        streamOffset={mode === 'hls' && hlsSource === 'local' ? hlsStartSec : 0}
+        onSeekAbsolute={mode === 'hls' && hlsSource === 'local' ? handleSeekAbsolute : undefined}
+        qualities={qualityOptions}
+        selectedQuality={selectedQuality}
+        onSelectQuality={selectPlaybackQuality}
+        showQuality={showQuality}
+        waiting={cloudWaiting}
+        waitingMessage={cloudWaitMessage}
         playlistPanel={
           <PlayerPlaylistPanel
             open={playlistOpen}
@@ -1248,6 +1562,21 @@ function formatEpisodeDisplay(ep: Media, siblings: Media[]): string {
   return ep.episode_num > 0 ? `第 ${ep.episode_num} 集` : mediaTitle || title || '未命名'
 }
 
+function findPlaybackQualityById(info: PlaybackInfo | null, id: string): PlaybackQuality | undefined {
+  if (!info || !id) return undefined
+  return [...(info.cloud_qualities ?? []), ...(info.local_qualities ?? [])].find(
+    (quality) => quality.id === id,
+  )
+}
+
+function defaultLocalQualityId(info: PlaybackInfo | null): string {
+  const qualities = info?.local_qualities ?? []
+  for (const id of ['1080', '720', '480', 'source']) {
+    if (qualities.some((quality) => quality.id === id)) return id
+  }
+  return qualities[0]?.id ?? '720'
+}
+
 function looksLikeSeriesTitle(ep: Media, title: string, siblings: Media[]): boolean {
   const normalized = normalizeEpisodeTitle(title)
   if (!normalized) return true

web/src/pages/PlayerVideoStage.tsx

@@ -1,9 +1,10 @@
 import { useEffect, useRef, useState } from 'react'
 import type { CSSProperties, PointerEvent, ReactNode, RefObject } from 'react'
+import { Loader2 } from 'lucide-react'
 
 import { subtitlesAPI, type SubtitleTrack } from '../api/subtitles'
 import { type DanmakuAnime, type DanmakuLoadedInfo } from '../api/danmaku'
-import type { Media } from '../types'
+import type { Media, PlaybackQuality } from '../types'
 import {
   loadSubtitleChineseConverter,
   type SubtitleChineseMode,
@@ -150,6 +151,9 @@ type PlayerVideoStageProps = {
   playerVolume: number
   onPlayerVolumeChange: (volume: number) => void
   onPlayerVolumeCommit: (volume: number) => void
+  playerPlaybackRate: number
+  onPlayerPlaybackRateChange: (rate: number) => void
+  onPlayerPlaybackRateCommit: (rate: number) => void
   danmakuEnabled: boolean
   danmakuOpacity: number
   danmakuFontSize: number
@@ -178,6 +182,12 @@ type PlayerVideoStageProps = {
   knownDuration?: number
   streamOffset?: number
   onSeekAbsolute?: (seconds: number) => boolean
+  qualities?: PlaybackQuality[]
+  selectedQuality?: string
+  onSelectQuality?: (quality: PlaybackQuality) => void
+  showQuality?: boolean
+  waiting?: boolean
+  waitingMessage?: string
 }
 
 export function PlayerVideoStage({
@@ -198,6 +208,9 @@ export function PlayerVideoStage({
   playerVolume,
   onPlayerVolumeChange,
   onPlayerVolumeCommit,
+  playerPlaybackRate,
+  onPlayerPlaybackRateChange,
+  onPlayerPlaybackRateCommit,
   danmakuEnabled,
   danmakuOpacity,
   danmakuFontSize,
@@ -224,6 +237,12 @@ export function PlayerVideoStage({
   knownDuration,
   streamOffset,
   onSeekAbsolute,
+  qualities = [],
+  selectedQuality = '',
+  onSelectQuality,
+  showQuality = false,
+  waiting = false,
+  waitingMessage = '',
 }: PlayerVideoStageProps) {
   const stageRef = useRef<HTMLDivElement>(null)
   const [videoRatio, setVideoRatio] = useState<number | null>(null)
@@ -640,6 +659,9 @@ export function PlayerVideoStage({
             volume={playerVolume}
             onVolumeChange={onPlayerVolumeChange}
             onVolumeCommit={onPlayerVolumeCommit}
+            playbackRate={playerPlaybackRate}
+            onPlaybackRateChange={onPlayerPlaybackRateChange}
+            onPlaybackRateCommit={onPlayerPlaybackRateCommit}
             uiVisible={controlsVisible}
             onUiVisibleChange={setControlsVisible}
             subs={subs}
@@ -666,6 +688,10 @@ export function PlayerVideoStage({
             knownDuration={knownDuration}
             streamOffset={streamOffset}
             onSeekAbsolute={onSeekAbsolute}
+            qualities={qualities}
+            selectedQuality={selectedQuality}
+            onSelectQuality={onSelectQuality}
+            showQuality={showQuality}
           />
           {danmakuPanel}
           {playlistPanel}
@@ -680,6 +706,15 @@ export function PlayerVideoStage({
           {playerError}
         </div>
       ) : null}
+      {waiting ? (
+        <div className="absolute inset-0 z-40 flex items-center justify-center bg-black/60 px-4 backdrop-blur-sm">
+          <div className="max-w-md rounded-xl border border-white/15 bg-black/85 px-6 py-5 text-center text-white shadow-2xl">
+            <Loader2 className="mx-auto mb-3 animate-spin text-rose-400" size={28} />
+            <p className="text-sm font-medium">{waitingMessage || '115 正在转码…'}</p>
+            <p className="mt-1 text-xs text-white/60">转码完成后会自动播放</p>
+          </div>
+        </div>
+      ) : null}
     </div>
   )
 }

web/src/pages/useLibraryData.ts

@@ -86,7 +86,7 @@ export function useLibraryData(
 
       const seriesMode = isSeriesLibraryType(lib.type)
       modeRef.current = seriesMode ? 'series' : 'media'
-      const pageSize = pageSizeFor(lib, seriesMode)
+      const pageSize = pageSizeFor(lib)
       try {
         if (seriesMode) {
           const data = await libraryAPI.listSeries(libraryID, 1, pageSize, { sort: sortField, order: sortOrder })
@@ -155,7 +155,7 @@ export function useLibraryData(
     try {
       const page = nextPageRef.current
       if (modeRef.current === 'series') {
-        const data = await libraryAPI.listSeries(libraryID, page, pageSizeFor(lib, true), {
+        const data = await libraryAPI.listSeries(libraryID, page, pageSizeFor(lib), {
           sort: sortField,
           order: sortOrder,
         })
@@ -167,7 +167,7 @@ export function useLibraryData(
         nextPageRef.current = page + 1
         hasMoreRef.current = pageItems.length > 0 && loadedCountRef.current < totalRef.current
       } else {
-        const data = await libraryAPI.listMedia(libraryID, page, pageSizeFor(lib, false), {
+        const data = await libraryAPI.listMedia(libraryID, page, pageSizeFor(lib), {
           sort: sortField,
           order: sortOrder,
         })
@@ -238,9 +238,11 @@ function isSeriesLibraryType(type?: string) {
   return type === 'tv' || type === 'anime' || type === 'variety'
 }
 
-function pageSizeFor(lib: Library, seriesMode: boolean): number {
-  if (lib.is_remote_emby) return 100
-  return seriesMode ? 500 : 2000
+function pageSizeFor(lib: Library): number {
+  // 首屏保持一屏多一点，后续统一由底部哨兵按页追加。此前沿用旧的
+  // 500/2000 批量值，会让中小型媒体库在第一次请求时就等于全量加载。
+  if (lib.is_remote_emby) return 50
+  return 60
 }
 
 function yieldToBrowser(): Promise<void> {
@@ -251,4 +253,4 @@ function yieldToBrowser(): Promise<void> {
       setTimeout(resolve, 0)
     }
   })
-}
+}

web/src/pages/useLibrarySeriesSelection.ts

@@ -1,4 +1,4 @@
-import { useEffect, useMemo } from 'react'
+import { useEffect, useMemo, useState } from 'react'
 
 import type { Media } from '../types'
 import {
@@ -9,6 +9,7 @@ import {
   specialSectionForMedia,
   type SeriesCard,
 } from '../utils/groupSeries'
+import { resolveSeriesCardByKey } from '../utils/seriesCardResolve'
 
 type SeasonEpisodes = {
   season: number
@@ -16,6 +17,7 @@ type SeasonEpisodes = {
 }
 
 type UseLibrarySeriesSelectionOptions = {
+  libraryID: string
   items: Media[]
   seriesEpisodeItems: Media[]
   isSeriesLibrary: boolean
@@ -32,6 +34,7 @@ type UseLibrarySeriesSelectionOptions = {
 }
 
 export function useLibrarySeriesSelection({
+  libraryID,
   items,
   seriesEpisodeItems,
   isSeriesLibrary,
@@ -46,6 +49,14 @@ export function useLibrarySeriesSelection({
   setSelectedSeason,
   onClearSeriesState,
 }: UseLibrarySeriesSelectionOptions) {
+  // 深链（首页最新条目 / 海报墙 ?series=<key>）指向的剧集不在已加载的
+  // 一页卡片里时，需要单独按 key 解析；resolvingSeries 让页面在这段时间
+  // 显示加载态，而不是先闪一下整个媒体库列表。
+  const [resolvingSeries, setResolvingSeries] = useState(false)
+  const [pendingSeriesKey, setPendingSeriesKey] = useState('')
+  // 当前 URL 请求的剧集 key（非剧集库 / 加载中 / 没带参数时为空）。
+  const requestedSeriesKey = !loading && isSeries ? (searchParams.get('series') ?? '') : ''
+
   const selectedEpisodes = useMemo(() => {
     const sourceItems = isSeriesLibrary ? seriesEpisodeItems : items
     if (!selectedSeries || sourceItems.length === 0) return []
@@ -92,20 +103,53 @@ export function useLibrarySeriesSelection({
   useEffect(() => {
     if (loading) return
     if (!isSeries) {
+      setPendingSeriesKey('')
       setSelectedSeries(null)
       setSelectedSeason(null)
       return
     }
 
-    const key = searchParams.get('series')
-    if (!key) {
+    if (!requestedSeriesKey) {
+      setPendingSeriesKey('')
       setSelectedSeries(null)
       return
     }
 
-    const next = seriesCards.find((card) => card.key === key)
-    setSelectedSeries(next ?? null)
-  }, [isSeries, loading, searchParams, seriesCards, setSelectedSeason, setSelectedSeries])
+    const next = seriesCards.find((card) => card.key === requestedSeriesKey)
+    if (next) {
+      setPendingSeriesKey('')
+      setSelectedSeries(next)
+      return
+    }
+
+    // 目标剧集尚未加载到（远程库分页 / 大库分页）：登记待解析 key。
+    setPendingSeriesKey((prev) => (prev === requestedSeriesKey ? prev : requestedSeriesKey))
+  }, [isSeries, loading, requestedSeriesKey, seriesCards, setSelectedSeason, setSelectedSeries])
+
+  useEffect(() => {
+    // pendingSeriesKey 必须仍然是 URL 上请求的 key：切换媒体库/清空参数
+    // 时直接丢弃待解析状态，避免把别的库的剧集解析进来。
+    if (!pendingSeriesKey || pendingSeriesKey !== requestedSeriesKey) {
+      setResolvingSeries(false)
+      return
+    }
+    let cancelled = false
+    setResolvingSeries(true)
+    resolveSeriesCardByKey(libraryID, pendingSeriesKey)
+      .then((card) => {
+        if (cancelled) return
+        setResolvingSeries(false)
+        setSelectedSeries(card)
+      })
+      .catch(() => {
+        if (cancelled) return
+        setResolvingSeries(false)
+        setSelectedSeries(null)
+      })
+    return () => {
+      cancelled = true
+    }
+  }, [libraryID, pendingSeriesKey, requestedSeriesKey, setSelectedSeries])
 
   useEffect(() => {
     if (!selectedSeries || selectedEpisodes.length === 0) {
@@ -135,6 +179,7 @@ export function useLibrarySeriesSelection({
   }
 
   return {
+    resolvingSeries,
     selectedEpisodes,
     visibleEpisodes,
     selectedSeriesEpisodes,

web/src/types/auth.ts

@@ -10,6 +10,8 @@ export interface User {
   subtitle_chinese_mode?: 'original' | 'simplified' | 'traditional'
   /** 本地缓存的播放器音量，服务端配置接口会刷新。 */
   player_volume?: number
+  /** 本地缓存的播放倍速，服务端配置接口会刷新。 */
+  player_playback_rate?: number
   force_password_reset: boolean
   is_active: boolean
   allowed_library_ids?: string[]

web/src/types/index.ts

@@ -7,4 +7,5 @@ export * from './history'
 export * from './library'
 export * from './media'
 export * from './notifications'
+export * from './playback'
 export * from './playProfiles'

web/src/types/playback.ts

@@ -0,0 +1,31 @@
+export type PlaybackQualitySource = 'cloud' | 'original' | 'local'
+
+export interface PlaybackQuality {
+  id: string
+  label: string
+  height?: number
+  source: PlaybackQualitySource
+  available: boolean
+  requires_transcode?: boolean
+  requires_vip?: boolean
+  note?: string
+}
+
+export interface PlaybackTranscodeState {
+  state: 'idle' | 'ready' | 'transcoding' | 'unavailable'
+  definition?: string
+  message?: string
+  retry_after_sec?: number
+  started_at?: number
+}
+
+export interface PlaybackInfo {
+  media_id: string
+  provider: string
+  fallback: string[]
+  default_quality: string
+  cloud_qualities?: PlaybackQuality[]
+  local_qualities: PlaybackQuality[]
+  transcode: PlaybackTranscodeState
+}
+

web/src/utils/groupSeries.ts

@@ -36,6 +36,7 @@ export type SeriesCard = {
   linkMedia?: Media
   linkLibraryId?: string
   count: number
+  is_series?: boolean
   last_added_at?: string
 }
 
@@ -223,6 +224,7 @@ export function seasonLabel(season: number): string {
 export function isSeriesCard(card: SeriesCard): boolean {
   const linkMedia = card.linkMedia ?? card.rep
   return (
+    card.is_series === true ||
     card.count > 1 ||
     isEpisodeLike(card.rep) ||
     isEpisodeLike(linkMedia) ||
@@ -458,7 +460,7 @@ export function groupSeries(items: Media[] = []): SeriesCard[] {
             ? compactSeriesKey(externalKey)
             : getSeriesKey(m)
 
-    const mAddedAt = m.created_at || m.updated_at || ''
+    const mAddedAt = m.updated_at || m.created_at || ''
     const g = groups.get(key)
     if (!g) {
       groups.set(key, { key, rep: m, linkMedia: m, count: 1, last_added_at: mAddedAt })

web/src/utils/mediaSort.ts

@@ -114,7 +114,7 @@ export function sortMediaList(
       case 'created_at':
         return compareDates(a.created_at, b.created_at, order) || compareStrings(a.title, b.title, 'asc')
       case 'updated_at':
-        return compareDates(a.created_at || a.updated_at, b.created_at || b.updated_at, order) || compareStrings(a.title, b.title, 'asc')
+        return compareDates(a.updated_at || a.created_at, b.updated_at || b.created_at, order) || compareStrings(a.title, b.title, 'asc')
       case 'rating':
       case 'imdb_rating': {
         const cmp = compareNumbers(a.rating || 0, b.rating || 0, order)

web/src/utils/playbackRate.test.ts

@@ -0,0 +1,22 @@
+import {
+  formatPlaybackRate,
+  normalizePlaybackRate,
+  stepPlaybackRate,
+} from './playbackRate.ts'
+
+function check(name: string, condition: boolean) {
+  if (!condition) throw new Error(`playbackRate: ${name}`)
+}
+
+check('invalid value falls back to 1x', normalizePlaybackRate(undefined) === 1)
+check('value snaps to nearest selectable rate', normalizePlaybackRate(1.2) === 1.25)
+check('value below range clamps to the minimum', normalizePlaybackRate(0.1) === 0.5)
+check('value above range clamps to the maximum', normalizePlaybackRate(9) === 3)
+check('up steps to the next rate', stepPlaybackRate(1, 1) === 1.25)
+check('down steps to the previous rate', stepPlaybackRate(1, -1) === 0.75)
+check('up stops at the maximum', stepPlaybackRate(3, 1) === 3)
+check('down stops at the minimum', stepPlaybackRate(0.5, -1) === 0.5)
+check('integer formatting', formatPlaybackRate(1) === '1x')
+check('decimal formatting', formatPlaybackRate(1.25) === '1.25x')
+
+console.log('playbackRate.test.ts ok')

web/src/utils/playbackRate.ts

@@ -0,0 +1,31 @@
+export const PLAYBACK_RATE_OPTIONS = [0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3] as const
+
+export const MIN_PLAYBACK_RATE = PLAYBACK_RATE_OPTIONS[0]
+export const MAX_PLAYBACK_RATE = PLAYBACK_RATE_OPTIONS[PLAYBACK_RATE_OPTIONS.length - 1]
+
+export function normalizePlaybackRate(value: unknown): number {
+  const parsed = Number(value)
+  if (!Number.isFinite(parsed)) return 1
+  let closest: number = PLAYBACK_RATE_OPTIONS[0]
+  let closestDistance = Number.POSITIVE_INFINITY
+  for (const option of PLAYBACK_RATE_OPTIONS) {
+    const distance = Math.abs(option - parsed)
+    if (distance < closestDistance) {
+      closest = option
+      closestDistance = distance
+    }
+  }
+  return closest
+}
+
+export function stepPlaybackRate(current: unknown, direction: 1 | -1): number {
+  const normalized = normalizePlaybackRate(current)
+  const index = PLAYBACK_RATE_OPTIONS.indexOf(normalized as (typeof PLAYBACK_RATE_OPTIONS)[number])
+  const next = Math.min(PLAYBACK_RATE_OPTIONS.length - 1, Math.max(0, index + direction))
+  return PLAYBACK_RATE_OPTIONS[next]
+}
+
+export function formatPlaybackRate(rate: unknown): string {
+  const normalized = normalizePlaybackRate(rate)
+  return `${Number.isInteger(normalized) ? normalized.toFixed(0) : String(normalized)}x`
+}

web/src/utils/seriesCardResolve.ts

@@ -0,0 +1,59 @@
+import { libraryAPI, mediaAPI } from '../api/library'
+import type { Media } from '../types'
+import { groupSeries, type SeriesCard } from './groupSeries'
+import { isRemoteEmbyID } from './remoteEmby'
+
+/**
+ * 按 series key 反解出剧集卡片。
+ *
+ * 首页「最新条目」、海报墙等入口点击后带 ?series=<key> 深链进媒体库页，
+ * 但媒体库页每次只加载一页剧集卡片（远程 Emby 库 100 条），目标剧集不在
+ * 这一页时列表里找不到对应卡片，页面就退化成整个媒体库列表。这里按 key
+ * 单独解析目标剧集，与分页无关：
+ *
+ * - 远程 Emby 的 key 本身就是（伪装后的）剧集 ID，直接取该条目详情；
+ * - 本地 key 是分组 hash，改取该剧集的集列表，再折叠出代表条目。
+ *
+ * key 失效（剧集已删除等）时返回 null，调用方保持"整库列表"原状态。
+ */
+export async function resolveSeriesCardByKey(libraryID: string, key: string): Promise<SeriesCard | null> {
+  if (!libraryID || !key) return null
+
+  if (isRemoteEmbyID(key)) {
+    const rep = await fetchRemoteSeriesMedia(key)
+    if (rep) {
+      return { key, rep, linkMedia: rep, count: 0, is_series: true }
+    }
+  }
+
+  const episodes = await fetchSeriesEpisodes(libraryID, key)
+  if (episodes.length === 0) return null
+  // 与列表页同一套折叠规则，选出海报/元数据最好的那一集做代表卡片。
+  const [grouped] = groupSeries(episodes)
+  const rep = grouped?.rep ?? episodes[0]
+  return {
+    key,
+    rep,
+    linkMedia: grouped?.linkMedia ?? rep,
+    count: episodes.length,
+    is_series: true,
+  }
+}
+
+async function fetchRemoteSeriesMedia(id: string): Promise<Media | null> {
+  try {
+    const media = await mediaAPI.get(id)
+    return media?.id ? media : null
+  } catch {
+    return null
+  }
+}
+
+async function fetchSeriesEpisodes(libraryID: string, key: string): Promise<Media[]> {
+  try {
+    const page = await libraryAPI.listSeriesEpisodes(libraryID, key)
+    return Array.isArray(page.items) ? page.items : []
+  } catch {
+    return []
+  }
+}