feat: 播放页按来源列表切换，新增作者/搜索/hashtag 侧栏

- 播放上下文：作品链接带上来源（搜索、标签、作者、hashtag），上一条/下一条
  在该列表内移动；当前作品不在列表中时退回全部作品的发布时间顺序
- 顶部提示标签显示当前列表与位置，点击打开侧栏列表，✕ 退出
- 侧栏改为「评论 | TA的作品 | 搜索结果/#hashtag」标签页，作品封面网格可就地切换
- 作者模式：打开「TA的作品」进入，关闭侧栏不退出，点提示 ✕ 后回到原来的列表
- 从搜索结果进入或点 hashtag 时自动打开对应列表
- 描述中的 hashtag 可点击，按完整 hashtag 精确匹配（#丰川祥子 不含 #丰川祥子cos）
- 新增 /api/playlist；搜索 SQL 抽到 lib/search-query.ts 与播放页共用，保证顺序一致
- 移动端：底部抽屉、点作品后收起，媒体区支持上下滑切换

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/api/playlist/route.ts

@@ -0,0 +1,21 @@
+import { NextResponse } from "next/server";
+import { json } from "@/lib/json";
+import { parsePlaybackContext } from "@/lib/playback-context";
+import { contextItems } from "@/lib/playback-context.server";
+
+// 按播放上下文的顺序列出作品，供播放页侧栏的网格使用。
+// 参数与 /aweme/<id> 上的上下文参数相同：?ctx=search&q=…、?ctx=hashtag&hashtag=…、?ctx=author&author=… 等。
+export async function GET(req: Request) {
+  const ctx = parsePlaybackContext(new URL(req.url).searchParams);
+  if (!ctx) {
+    return NextResponse.json({ error: "Invalid context" }, { status: 400 });
+  }
+  try {
+    return json(await contextItems(ctx));
+  } catch (err) {
+    console.error("Playlist error:", err);
+    return NextResponse.json({ error: "Playlist failed" }, { status: 500 });
+  }
+}
+
+export const dynamic = "force-dynamic";

app/api/search/route.ts

@@ -2,26 +2,10 @@ import { NextResponse } from "next/server";
 import { json } from "@/lib/json";
 import { getFileUrl } from "@/lib/minio";
 import { prisma } from "@/lib/prisma";
-import {
-  buildSnippet,
-  highlightAll,
-  parseSearchQuery,
-  termToPgPattern,
-} from "@/lib/search";
+import { buildSnippet, highlightAll, parseSearchQuery } from "@/lib/search";
+import { searchRows } from "@/lib/search-query";
 import { isVideoContentTag } from "@/lib/video-tags";
 
-type SearchRow = {
-  awemeId: string;
-  type: "video" | "image";
-  score: number;
-  inDesc: boolean;
-  inTranscript: boolean;
-  rawDesc: string;
-  rawTranscript: string;
-  contentTags: string[];
-  total: number;
-};
-
 export async function GET(req: Request) {
   const { searchParams } = new URL(req.url);
   const q = (searchParams.get("q") || "").trim();
@@ -43,79 +27,12 @@ export async function GET(req: Request) {
     return json({ results: [], total: 0, page, limit, terms });
   }
 
-  // 关键词已在 parseSearchQuery 里转为小写，这里转成正则后与 lower() 后的文本匹配
-  const patterns = terms.map(termToPgPattern);
-  const excludePatterns = excludes.map(termToPgPattern);
-
   try {
-    // 子串匹配：每个关键词都必须出现在「描述 + 语音转写」里（不区分大小写），
-    // 不依赖分词，所以输入任意片段都能搜到。数据量小，全表扫描足够快。
-    // 打分：描述命中权重更高，按出现次数累加（设上限防止长转写刷分）；同分按发布时间倒序。
-    // 没有关键词、只按标签筛选时，score 都是 0，等价于按时间排序。
-    const rows = await prisma.$queryRaw<SearchRow[]>`
-      WITH params AS (
-        SELECT ${patterns}::text[] AS terms, ${excludePatterns}::text[] AS excludes
-      ),
-      docs AS (
-        SELECT
-          v.aweme_id AS "awemeId",
-          'video'::text AS type,
-          v."desc" AS "rawDesc",
-          COALESCE(array_to_string(vt.transcript, E'\n'), '') AS "rawTranscript",
-          v.created_at AS created,
-          v.manual_content_tags AS "contentTags"
-        FROM "Video" v
-        LEFT JOIN "VideoTranscript" vt ON vt."videoId" = v.aweme_id
-        WHERE ${contentTag}::text IS NULL
-           OR v.manual_content_tags @> ARRAY[${contentTag}]::text[]
-
-        UNION ALL
-
-        SELECT
-          ip.aweme_id,
-          'image'::text,
-          ip."desc",
-          '',
-          ip.created_at,
-          ARRAY[]::text[]
-        FROM "ImagePost" ip
-        WHERE ${contentTag}::text IS NULL
-      ),
-      lowered AS (
-        SELECT docs.*, lower(docs."rawDesc") AS d, lower(docs."rawTranscript") AS t
-        FROM docs
-      ),
-      matched AS (
-        SELECT
-          l.*,
-          COALESCE((
-            SELECT SUM(
-              4 * LEAST(regexp_count(l.d, term), 3)
-              + LEAST(regexp_count(l.t, term), 10)
-            )
-            FROM unnest(p.terms) term
-          ), 0)::float8 AS score,
-          EXISTS (SELECT 1 FROM unnest(p.terms) term WHERE l.d ~ term) AS "inDesc",
-          EXISTS (SELECT 1 FROM unnest(p.terms) term WHERE l.t ~ term) AS "inTranscript"
-        FROM lowered l, params p
-        WHERE NOT EXISTS (
-            SELECT 1 FROM unnest(p.terms) term
-            WHERE l.d !~ term AND l.t !~ term
-          )
-          AND NOT EXISTS (
-            SELECT 1 FROM unnest(p.excludes) x
-            WHERE l.d ~ x OR l.t ~ x
-          )
-      )
-      SELECT
-        "awemeId", type, score, "inDesc", "inTranscript",
-        "rawDesc", "rawTranscript", "contentTags",
-        (COUNT(*) OVER ())::int AS total
-      FROM matched
-      ORDER BY score DESC, created DESC, "awemeId"
-      OFFSET ${offset}
-      LIMIT ${limit};
-    `;
+    const rows = await searchRows(
+      { terms, excludes, contentTag },
+      offset,
+      limit,
+    );
 
     const videoIds = rows
       .filter((r) => r.type === "video")

app/author/[secUid]/page.tsx

@@ -1,5 +1,6 @@
 import { prisma } from "@/lib/prisma";
 import { getFileUrl } from "@/lib/minio";
+import { playbackContextQuery } from "@/lib/playback-context";
 import FeedMasonry from "@/app/components/FeedMasonry";
 import BackButton from "@/app/components/BackButton";
 import { FeedItem } from "@/app/types/feed";
@@ -147,6 +148,7 @@ export default async function AuthorPage({
             initialItems={initialItems}
             initialCursor={initialCursor}
             fetchUrl={`/api/author/${secUid}/feed`}
+            linkQuery={playbackContextQuery({ kind: "author", secUid })}
           />
         </div>
       </div>

app/aweme/[awemeId]/Client.tsx

@@ -10,32 +10,49 @@ import {
   useRef,
   useState,
 } from "react";
+import {
+  awemeHref,
+  type PlaylistItem,
+  playbackContextQuery,
+} from "@/lib/playback-context";
+import { AuthorWorksTab } from "./components/AuthorWorksTab";
 import { BackgroundCanvas } from "./components/BackgroundCanvas";
 import { CommentPanel } from "./components/CommentPanel";
+import { ContextChip } from "./components/ContextChip";
+import { ContextListTab } from "./components/ContextListTab";
 import { ImageCarousel } from "./components/ImageCarousel";
 import { ImageNavigationButtons } from "./components/ImageNavigationButtons";
 import { MediaControls } from "./components/MediaControls";
 import { NavigationButtons } from "./components/NavigationButtons";
+import { SidePanel } from "./components/SidePanel";
 import { TranscriptPanel } from "./components/TranscriptPanel";
 import { VideoPlayer } from "./components/VideoPlayer";
 import { VideoTagEditor } from "./components/VideoTagEditor";
 import { useBackgroundCanvas } from "./hooks/useBackgroundCanvas";
-import { useCommentState } from "./hooks/useCommentState";
 import { useImageCarousel } from "./hooks/useImageCarousel";
 import { useNavigation } from "./hooks/useNavigation";
 import { usePlayerState } from "./hooks/usePlayerState";
+import { usePlaylist } from "./hooks/usePlaylist";
+import {
+  isPortraitViewport,
+  useSidePanelState,
+} from "./hooks/useSidePanelState";
 import { useVideoPlayer } from "./hooks/useVideoPlayer";
 import type {
   AbLoop,
   AwemeData,
   ImageData,
   Neighbors,
+  PlaybackContextInfo,
   VideoData,
   VideoTranscript,
 } from "./types.ts";
 
 const SEGMENT_MS = 4000;
 
+// 每个搜索 / hashtag 列表只在第一次进入时自动打开侧栏，之后尊重你自己的开关
+const LIST_AUTO_OPENED_KEY = "aweme_player_list_auto_opened";
+
 type WebkitVideoElement = HTMLVideoElement & {
   webkitEnterFullscreen?: () => void;
 };
@@ -52,13 +69,22 @@ type MediaSessionWithPositionState = MediaSession & {
 
 interface AwemeDetailClientProps {
   data: AwemeData;
+  /** 服务端按 URL 上的播放上下文算出的上一条/下一条 */
   neighbors: Neighbors;
+  /** URL 上的上下文（搜索/标签/作者）生效时的提示信息 */
+  playbackContext: PlaybackContextInfo | null;
+  /** URL 上原本的上下文查询串，作者模式下跳转时原样带上 */
+  contextQuery: string;
+  authorWorksCount: number;
   transcript: VideoTranscript | null;
 }
 
 export default function AwemeDetailClient({
   data,
-  neighbors,
+  neighbors: serverNeighbors,
+  playbackContext,
+  contextQuery,
+  authorWorksCount,
   transcript,
 }: AwemeDetailClientProps): ReactElement {
   const router = useRouter();
@@ -66,7 +92,59 @@ export default function AwemeDetailClient({
 
   // 状态管理
   const playerState = usePlayerState();
-  const commentState = useCommentState();
+  const panel = useSidePanelState(data.author.sec_uid);
+  // 搜索 / hashtag / 标签上下文才有「列表」标签页（作者上下文和「TA的作品」重复）
+  const listContext =
+    playbackContext && playbackContext.kind !== "author"
+      ? playbackContext
+      : null;
+  const activeTab =
+    panel.tab === "list" && !listContext ? "comments" : panel.tab;
+  const authorQuery = data.author.sec_uid
+    ? playbackContextQuery({ kind: "author", secUid: data.author.sec_uid })
+    : "";
+  const authorWorks = usePlaylist(
+    authorQuery,
+    panel.authorMode || (panel.open && activeTab === "works"),
+  );
+  const contextList = usePlaylist(
+    listContext ? contextQuery : "",
+    panel.open && activeTab === "list",
+  );
+
+  // 作者模式（打开「TA的作品」时进入，关掉侧栏不退出）：上下切换在该作者的作品里移动；
+  // 点顶部提示的 ✕ 退出后，回到服务端按 URL 上下文算好的顺序，当前视频不变。
+  const authorPlayback = useMemo(() => {
+    if (!panel.authorMode) return null;
+    const items = authorWorks.items;
+    // 列表还没加载出来时先不让上下切换，避免误按到另一个顺序里
+    if (!items) {
+      return {
+        neighbors: { prev: null, next: null } as Neighbors,
+        position: 0,
+        total: 0,
+      };
+    }
+    const index = items.findIndex((item) => item.aweme_id === data.aweme_id);
+    if (index === -1) return null;
+    const link = (item: PlaylistItem | undefined) =>
+      item
+        ? {
+            aweme_id: item.aweme_id,
+            href: awemeHref(item.aweme_id, contextQuery),
+          }
+        : null;
+    return {
+      neighbors: {
+        prev: link(items[index - 1]),
+        next: link(items[index + 1]),
+      } as Neighbors,
+      position: index + 1,
+      total: items.length,
+    };
+  }, [panel.authorMode, authorWorks.items, data.aweme_id, contextQuery]);
+
+  const neighbors = authorPlayback?.neighbors ?? serverNeighbors;
   const [transcriptOpen, setTranscriptOpen] = useState(false);
   const [isFastForwarding, setIsFastForwarding] = useState(false);
   const [abLoop, setAbLoop] = useState<AbLoop>({ a: null, b: null });
@@ -328,23 +406,106 @@ export default function AwemeDetailClient({
     setTranscriptOpen(false);
   }, []);
 
-  const handleCloseComments = useCallback((): void => {
-    commentState.setOpen(false);
-  }, [commentState.setOpen]);
-
   const handleToggleComments = useCallback((): void => {
-    commentState.setOpen((v) => !v);
-  }, [commentState.setOpen]);
+    panel.toggle("comments");
+  }, [panel.toggle]);
+
+  const handleAuthorClick = useCallback((): void => {
+    panel.toggle("works");
+  }, [panel.toggle]);
+
+  // 竖屏（底部抽屉）点了作品后关掉抽屉露出视频；顺序不受影响，点顶部提示可以再打开
+  const handleWorkSelect = useCallback((): void => {
+    if (isPortraitViewport()) panel.close();
+  }, [panel.close]);
+
+  const handleExitUrlContext = useCallback((): void => {
+    router.replace(awemeHref(data.aweme_id));
+  }, [data.aweme_id, router]);
+
+  const showWorks = useCallback((): void => {
+    panel.show("works");
+  }, [panel.show]);
+
+  // 退出作者模式：回到 URL 上原来的顺序（搜索 / hashtag / 全部作品）；作品网格还开着的话一并关掉
+  const exitAuthorMode = useCallback((): void => {
+    panel.exitAuthorMode();
+    if (panel.open && panel.tab === "works") panel.close();
+  }, [panel.exitAuthorMode, panel.open, panel.tab, panel.close]);
+
+  const showList = useCallback((): void => {
+    panel.show("list");
+  }, [panel.show]);
+
+  // 点描述里的 hashtag：停在当前视频，上下切换改为在带这个 hashtag 的作品里移动，并打开列表
+  const handleHashtagClick = useCallback(
+    (name: string): void => {
+      panel.exitAuthorMode();
+      router.replace(
+        awemeHref(
+          data.aweme_id,
+          playbackContextQuery({ kind: "hashtag", name }),
+        ),
+        { scroll: false },
+      );
+    },
+    [data.aweme_id, router, panel.exitAuthorMode],
+  );
+
+  // 从搜索结果进来、或点了 hashtag 时自动打开列表标签页
+  const listKind = listContext?.kind;
+  useEffect(() => {
+    if (!panel.restored) return;
+    if (listKind !== "search" && listKind !== "hashtag") return;
+    try {
+      if (sessionStorage.getItem(LIST_AUTO_OPENED_KEY) === contextQuery) return;
+      sessionStorage.setItem(LIST_AUTO_OPENED_KEY, contextQuery);
+    } catch {}
+    panel.show("list");
+  }, [panel.restored, panel.show, listKind, contextQuery]);
+
+  const searchPageHref = useMemo(() => {
+    if (listKind !== "search") return null;
+    const params = new URLSearchParams(contextQuery);
+    params.delete("ctx");
+    return `/search?${params.toString()}`;
+  }, [listKind, contextQuery]);
+
+  const listVisible = panel.open && activeTab === "list";
+  const worksVisible = panel.open && activeTab === "works";
+
+  const chip =
+    authorPlayback && authorPlayback.total > 0
+      ? {
+          label: `${data.author.nickname} 的作品`,
+          position: authorPlayback.position,
+          total: authorPlayback.total,
+          // 作品网格没在显示时，点提示可以重新打开
+          onExpand: worksVisible ? undefined : showWorks,
+          expandLabel: "查看TA的作品",
+          onExit: exitAuthorMode,
+          exitLabel: "退出作者模式",
+        }
+      : !panel.authorMode && playbackContext
+        ? {
+            ...playbackContext,
+            // 列表没在显示时，点提示可以打开侧栏里的完整列表
+            onExpand: listContext && !listVisible ? showList : undefined,
+            expandLabel: `查看${playbackContext.listTitle}`,
+            onExit: handleExitUrlContext,
+            exitLabel: "退出当前列表，按全部作品切换",
+          }
+        : null;
 
   const handleNavigatePrev = useCallback((): void => {
     if (neighbors.prev) {
-      router.push(`/aweme/${neighbors.prev.aweme_id}`);
+      router.push(neighbors.prev.href);
     }
   }, [neighbors.prev, router]);
 
   const handleNavigateNext = useCallback((): void => {
     if (neighbors.next) {
-      router.push(`/aweme/${neighbors.next.aweme_id}`);
+      router.push(neighbors.next.href);
     }
   }, [neighbors.next, router]);
 
@@ -586,14 +747,14 @@ export default function AwemeDetailClient({
       if (!isVideo && images?.length > 1) {
         prevImg();
       } else if (neighbors.prev) {
-        router.push(`/aweme/${neighbors.prev.aweme_id}`);
+        router.push(neighbors.prev.href);
       }
     });
     ms.setActionHandler("nexttrack", () => {
       if (!isVideo && images?.length > 1) {
         nextImg();
       } else if (neighbors.next) {
-        router.push(`/aweme/${neighbors.next.aweme_id}`);
+        router.push(neighbors.next.href);
       }
     });
 
@@ -670,9 +831,24 @@ export default function AwemeDetailClient({
               )}
             </div>
 
+            {/* 播放上下文提示：上下切换当前在哪个列表里移动 */}
+            {chip && (
+              <ContextChip
+                label={chip.label}
+                position={chip.position}
+                total={chip.total}
+                onExpand={chip.onExpand}
+                expandLabel={chip.expandLabel}
+                onExit={chip.onExit}
+                exitLabel={chip.exitLabel}
+              />
+            )}
+
             {/* 长按 2x 快进状态指示 */}
             {isFastForwarding && (
-              <div className="pointer-events-none absolute top-4 left-1/2 -translate-x-1/2 z-40">
+              <div
+                className={`pointer-events-none absolute left-1/2 -translate-x-1/2 z-40 ${chip ? "top-24 sm:top-14" : "top-4"}`}
+              >
                 <div className="inline-flex items-center gap-1.5 rounded-full bg-black/65 border border-white/20 px-3.5 py-1.5 text-xs font-medium text-white shadow-lg">
                   <FastForward size={14} className="text-amber-300" />
                   <span>2.0x 快进中</span>
@@ -740,6 +916,8 @@ export default function AwemeDetailClient({
               onLoopModeChange={playerState.setLoopMode}
               onDownload={handleDownload}
               onToggleFullscreen={toggleFullscreen}
+              onAuthorClick={handleAuthorClick}
+              onHashtagClick={handleHashtagClick}
             />
           </div>
 
@@ -754,14 +932,63 @@ export default function AwemeDetailClient({
           />
         </section>
 
-        {/* 评论面板 */}
-        <CommentPanel
-          open={commentState.open}
-          onClose={handleCloseComments}
-          author={data.author}
-          createdAt={data.created_at}
-          awemeId={data.aweme_id}
-          mounted={commentState.mounted}
+        {/* 侧栏：评论 / TA的作品 / 搜索结果（或 hashtag） */}
+        <SidePanel
+          open={panel.open}
+          mounted={panel.mounted}
+          tab={activeTab}
+          onTabChange={panel.selectTab}
+          onClose={panel.close}
+          tabs={[
+            {
+              key: "comments",
+              label: "评论",
+              count: data.commentsCount,
+              content: (
+                <CommentPanel
+                  open={panel.open && activeTab === "comments"}
+                  author={data.author}
+                  createdAt={data.created_at}
+                  awemeId={data.aweme_id}
+                />
+              ),
+            },
+            {
+              key: "works",
+              label: "TA的作品",
+              count: authorWorks.items?.length ?? authorWorksCount,
+              content: (
+                <AuthorWorksTab
+                  active={worksVisible}
+                  author={data.author}
+                  works={authorWorks}
+                  currentId={data.aweme_id}
+                  contextQuery={contextQuery}
+                  onSelect={handleWorkSelect}
+                />
+              ),
+            },
+            ...(listContext
+              ? [
+                  {
+                    key: "list" as const,
+                    label: listContext.listTitle,
+                    count: listContext.total,
+                    content: (
+                      <ContextListTab
+                        active={panel.open && activeTab === "list"}
+                        context={listContext}
+                        list={contextList}
+                        currentId={data.aweme_id}
+                        contextQuery={contextQuery}
+                        searchPageHref={searchPageHref}
+                        onSelect={handleWorkSelect}
+                      />
+                    ),
+                  },
+                ]
+              : []),
+          ]}
         />
 
         {/* 转录面板 */}

app/aweme/[awemeId]/components/AuthorWorksTab.tsx

@@ -0,0 +1,63 @@
+import { ChevronRight } from "lucide-react";
+import Link from "next/link";
+import { memo } from "react";
+import type { PlaylistState } from "../hooks/usePlaylist";
+import type { User } from "../types.ts";
+import { WorksGrid } from "./WorksGrid";
+
+interface AuthorWorksTabProps {
+  /** 侧栏打开且停在「TA的作品」标签页 */
+  active: boolean;
+  author: User;
+  works: PlaylistState;
+  currentId: string;
+  /** 跳转时原样带上的播放上下文查询串 */
+  contextQuery: string;
+  onSelect: () => void;
+}
+
+// 侧栏「TA的作品」：作者在库里的全部作品。点作品就地切换；点作者名字才去独立的作者页。
+export const AuthorWorksTab = memo(function AuthorWorksTab({
+  active,
+  author,
+  works,
+  currentId,
+  contextQuery,
+  onSelect,
+}: AuthorWorksTabProps) {
+  const header = author.sec_uid ? (
+    <Link
+      href={`/author/${author.sec_uid}`}
+      className="group flex min-w-0 flex-1 items-center gap-2.5"
+      title="打开作者主页"
+    >
+      {/* biome-ignore lint/performance/noImgElement: 头像来自对象存储，不走 next/image */}
+      <img
+        src={author.avatar_url ?? ""}
+        alt=""
+        className="h-9 w-9 shrink-0 rounded-full bg-white/10 object-cover"
+      />
+      <span className="truncate font-semibold text-white group-hover:underline">
+        @{author.nickname}
+      </span>
+      <ChevronRight size={16} className="shrink-0 text-white/60" />
+      <span className="ml-auto shrink-0 text-xs text-white/40">作者主页</span>
+    </Link>
+  ) : (
+    <span className="truncate font-semibold text-white">
+      @{author.nickname}
+    </span>
+  );
+
+  return (
+    <WorksGrid
+      active={active}
+      list={works}
+      currentId={currentId}
+      hrefQuery={contextQuery}
+      onSelect={onSelect}
+      singleHint="库里只存了这位作者的这一个作品"
+      header={header}
+    />
+  );
+});

app/aweme/[awemeId]/components/CommentPanel.tsx

@@ -1,15 +1,13 @@
-import { X } from "lucide-react";
 import { memo, useCallback, useEffect, useRef, useState } from "react";
 import type { Comment, User } from "../types.ts";
 import { CommentList } from "./CommentList";
 
 interface CommentPanelProps {
+  /** 侧栏打开且停在「评论」标签页 */
   open: boolean;
-  onClose: () => void;
   author: User;
   createdAt: string | Date;
   awemeId: string;
-  mounted: boolean;
 }
 
 interface CommentsApiResponse {
@@ -21,16 +19,14 @@ interface CommentsApiResponse {
   snapshot?: string | number;
 }
 
+// 侧栏「评论」标签页的内容（外壳与标签切换在 SidePanel 里）
 export const CommentPanel = memo(function CommentPanel({
   open,
-  onClose,
   author,
   createdAt,
   awemeId,
-  mounted,
 }: CommentPanelProps) {
   const [comments, setComments] = useState<Comment[]>([]);
-  const [total, setTotal] = useState(0);
   const [loading, setLoading] = useState(false);
   const [hasMore, setHasMore] = useState(true);
   const [hasOpened, setHasOpened] = useState(open);
@@ -93,7 +89,6 @@ export const CommentPanel = memo(function CommentPanel({
           return deduped;
         });
 
-        setTotal(typeof data.total === "number" ? data.total : 0);
         const nextHasMore = Boolean(data.hasMore);
         hasMoreRef.current = nextHasMore;
         setHasMore(nextHasMore);
@@ -131,7 +126,6 @@ export const CommentPanel = memo(function CommentPanel({
     hasMoreRef.current = true;
     rankParamsRef.current = null;
     setComments([]);
-    setTotal(0);
     setHasMore(true);
     setLoading(false);
 
@@ -174,57 +168,29 @@ export const CommentPanel = memo(function CommentPanel({
   }, [open, hasMore, loadComments]);
 
   return (
-    <aside
-      className={`
-        z-30 flex flex-col bg-[rgba(22,22,22,0.92)] text-white overflow-hidden
-        fixed inset-x-0 bottom-0 w-full h-[min(80vh,88dvh)] border-t border-white/10
-        landscape:relative landscape:inset-auto landscape:h-full landscape:translate-y-0 landscape:border-t-0
-        ${mounted ? "transition-transform landscape:transition-[width] duration-200 ease-out" : ""}
-        ${
-          open
-            ? "translate-y-0 pointer-events-auto landscape:w-[min(420px,36vw)] landscape:border-l landscape:border-white/10"
-            : "translate-y-full pointer-events-none landscape:w-0 landscape:border-l-0"
-        }
-      `}
-    >
-      <div className="flex items-center justify-between landscape:flex-row-reverse px-3 py-3 border-b border-white/10 shrink-0">
-        <div className="text-white font-semibold">
-          评论 {total > 0 ? `(${total})` : ""}
-        </div>
-        <button
-          type="button"
-          className="w-8 h-8 inline-flex items-center justify-center rounded-full bg-white/15 text-white/90 border border-white/20 hover:bg-white/25 transition-colors cursor-pointer"
-          onClick={onClose}
-          aria-label="关闭评论"
-        >
-          <X size={18} />
-        </button>
-      </div>
+    <div ref={scrollRef} className="p-3 overflow-auto comment-scroll flex-1">
+      {(open || hasOpened) && (
+        <>
+          <CommentList
+            author={author}
+            createdAt={createdAt}
+            comments={comments}
+          />
 
-      <div ref={scrollRef} className="p-3 overflow-auto comment-scroll flex-1">
-        {(open || hasOpened) && (
-          <>
-            <CommentList
-              author={author}
-              createdAt={createdAt}
-              comments={comments}
-            />
+          {hasMore && <div ref={sentinelRef} className="h-1 w-full" />}
 
-            {hasMore && <div ref={sentinelRef} className="h-1 w-full" />}
-
-            {loading && (
-              <div className="py-4 text-center text-white/60 text-sm">
-                加载中...
-              </div>
-            )}
-            {!hasMore && comments.length > 0 && (
-              <div className="py-4 text-center text-white/40 text-sm">
-                没有更多评论了
-              </div>
-            )}
-          </>
-        )}
-      </div>
-    </aside>
+          {loading && (
+            <div className="py-4 text-center text-white/60 text-sm">
+              加载中...
+            </div>
+          )}
+          {!hasMore && comments.length > 0 && (
+            <div className="py-4 text-center text-white/40 text-sm">
+              没有更多评论了
+            </div>
+          )}
+        </>
+      )}
+    </div>
   );
 });

app/aweme/[awemeId]/components/ContextChip.tsx

@@ -0,0 +1,64 @@
+import { ChevronUp, ListVideo, X } from "lucide-react";
+import { memo } from "react";
+
+interface ContextChipProps {
+  label: string;
+  position: number;
+  total: number;
+  /** 提供时整个标签可点：展开 / 打开侧栏里的完整列表 */
+  onExpand?: () => void;
+  expandLabel?: string;
+  onExit: () => void;
+  exitLabel: string;
+}
+
+// 顶部的模式提示：说明上下切换当前在哪个列表里移动，避免「为什么跳到这里了」的困惑
+export const ContextChip = memo(function ContextChip({
+  label,
+  position,
+  total,
+  onExpand,
+  expandLabel,
+  onExit,
+  exitLabel,
+}: ContextChipProps) {
+  const content = (
+    <>
+      <ListVideo size={14} className="shrink-0 text-rose-300" />
+      <span className="truncate">{label}</span>
+      <span className="shrink-0 tabular-nums text-white/60">
+        {position}/{total}
+      </span>
+      {onExpand && <ChevronUp size={14} className="shrink-0 text-white/70" />}
+    </>
+  );
+
+  return (
+    <div className="absolute left-1/2 top-14 z-40 flex max-w-[calc(100%-1.5rem)] sm:top-3 sm:max-w-[calc(100%-14rem)] -translate-x-1/2 items-center rounded-full border border-white/20 bg-black/60 text-xs font-medium text-white shadow-lg backdrop-blur">
+      {onExpand ? (
+        <button
+          type="button"
+          onClick={onExpand}
+          className="flex min-w-0 items-center gap-1.5 py-1.5 pl-3 pr-1 cursor-pointer"
+          aria-label={expandLabel}
+          title={expandLabel}
+        >
+          {content}
+        </button>
+      ) : (
+        <div className="flex min-w-0 items-center gap-1.5 py-1.5 pl-3 pr-1">
+          {content}
+        </div>
+      )}
+      <button
+        type="button"
+        onClick={onExit}
+        className="mr-1 grid h-6 w-6 shrink-0 place-items-center rounded-full text-white/70 hover:bg-white/15 hover:text-white cursor-pointer"
+        aria-label={exitLabel}
+        title={exitLabel}
+      >
+        <X size={14} />
+      </button>
+    </div>
+  );
+});

app/aweme/[awemeId]/components/ContextListTab.tsx

@@ -0,0 +1,60 @@
+import { Hash, Search } from "lucide-react";
+import Link from "next/link";
+import { memo } from "react";
+import type { PlaylistState } from "../hooks/usePlaylist";
+import type { PlaybackContextInfo } from "../types.ts";
+import { WorksGrid } from "./WorksGrid";
+
+interface ContextListTabProps {
+  active: boolean;
+  context: PlaybackContextInfo;
+  list: PlaylistState;
+  currentId: string;
+  contextQuery: string;
+  /** 对应的搜索结果页链接（搜索上下文才有） */
+  searchPageHref: string | null;
+  onSelect: () => void;
+}
+
+// 侧栏的「搜索结果 / #hashtag / 标签」列表：和上下切换的顺序完全一致
+export const ContextListTab = memo(function ContextListTab({
+  active,
+  context,
+  list,
+  currentId,
+  contextQuery,
+  searchPageHref,
+  onSelect,
+}: ContextListTabProps) {
+  const Icon = context.kind === "hashtag" ? Hash : Search;
+  const header = (
+    <>
+      <Icon size={18} className="shrink-0 text-rose-300" />
+      <div className="min-w-0 flex-1">
+        <div className="truncate font-semibold text-white">{context.label}</div>
+        <div className="text-xs text-white/50">
+          第 {context.position} 个 · 共 {context.total} 个
+        </div>
+      </div>
+      {searchPageHref && (
+        <Link
+          href={searchPageHref}
+          className="shrink-0 text-xs text-white/50 hover:text-white hover:underline"
+        >
+          在搜索页查看
+        </Link>
+      )}
+    </>
+  );
+
+  return (
+    <WorksGrid
+      active={active}
+      list={list}
+      currentId={currentId}
+      hrefQuery={contextQuery}
+      onSelect={onSelect}
+      header={header}
+    />
+  );
+});

app/aweme/[awemeId]/components/MediaControls.tsx

@@ -16,7 +16,8 @@ import {
   VolumeX,
 } from "lucide-react";
 import Link from "next/link";
-import { memo, type ReactNode, type RefObject } from "react";
+import { memo, type ReactNode, type RefObject, useMemo } from "react";
+import { parseDescHashtags } from "@/lib/hashtag";
 import type { AbLoop, LoopMode, ObjectFit, User } from "../types.ts";
 import { formatAbsoluteUTC, formatRelativeTime, formatTime } from "../utils";
 import { MoreMenu, MoreMenuItem } from "./MoreMenu";
@@ -59,6 +60,10 @@ interface MediaControlsProps {
   onLoopModeChange: (mode: LoopMode) => void;
   onDownload: () => void;
   onToggleFullscreen: () => void;
+  /** 点作者头像/名字：在侧栏打开「TA的作品」 */
+  onAuthorClick?: () => void;
+  /** 点描述里的 hashtag：切到该 hashtag 的作品列表 */
+  onHashtagClick?: (name: string) => void;
 }
 
 const CONTROL_BTN_CLASS =
@@ -96,7 +101,10 @@ export const MediaControls = memo(function MediaControls({
   onLoopModeChange,
   onDownload,
   onToggleFullscreen,
+  onAuthorClick,
+  onHashtagClick,
 }: MediaControlsProps) {
+  const descParts = useMemo(() => parseDescHashtags(desc || ""), [desc]);
   const normalizedLoopMode =
     isVideo && loopMode === "single" ? "loop" : loopMode;
   const loopLabel = isVideo
@@ -129,10 +137,29 @@ export const MediaControls = memo(function MediaControls({
   };
 
   return (
-    <div className="absolute left-0 right-0 bottom-0 z-40 px-3 pb-4 pt-2 bg-gradient-to-b from-black/0 via-black/45 to-black/65 flex flex-col gap-2.5">
+    <div
+      data-no-swipe
+      className="absolute left-0 right-0 bottom-0 z-40 px-3 pb-4 pt-2 bg-gradient-to-b from-black/0 via-black/45 to-black/65 flex flex-col gap-2.5"
+    >
       {/* 描述行 */}
       <div className="flex items-center gap-2.5 mb-1 pointer-events-none">
-        {author.sec_uid ? (
+        {author.sec_uid && onAuthorClick ? (
+          <button
+            type="button"
+            onClick={onAuthorClick}
+            className="flex items-center gap-2.5 pointer-events-auto hover:opacity-80 transition-opacity cursor-pointer"
+            title="查看TA的作品"
+          >
+            <img
+              src={author.avatar_url ?? ""}
+              alt=""
+              className="w-8 h-8 rounded-full"
+            />
+            <span className="text-[15px] leading-tight text-white/95 drop-shadow font-medium">
+              {author.nickname}
+            </span>
+          </button>
+        ) : author.sec_uid ? (
           <Link
             href={`/author/${author.sec_uid}`}
             className="flex items-center gap-2.5 pointer-events-auto hover:opacity-80 transition-opacity"
@@ -172,7 +199,23 @@ export const MediaControls = memo(function MediaControls({
       {desc ? (
         <div className="pointer-events-none">
           <p className="text-[13px] leading-tight text-white/95 max-h-[3.9em] overflow-hidden [display:-webkit-box] [-webkit-line-clamp:3] [-webkit-box-orient:vertical] drop-shadow">
-            {desc}
+            {descParts.map((part, i) =>
+              part.type === "hashtag" && onHashtagClick ? (
+                <button
+                  // biome-ignore lint/suspicious/noArrayIndexKey: 描述片段顺序固定
+                  key={i}
+                  type="button"
+                  onClick={() => onHashtagClick(part.name)}
+                  className="pointer-events-auto font-semibold text-white hover:underline cursor-pointer"
+                  title={`查看所有带 #${part.name} 的作品`}
+                >
+                  {part.text}
+                </button>
+              ) : (
+                // biome-ignore lint/suspicious/noArrayIndexKey: 描述片段顺序固定
+                <span key={i}>{part.text}</span>
+              ),
+            )}
           </p>
         </div>
       ) : null}

app/aweme/[awemeId]/components/SidePanel.tsx

@@ -0,0 +1,97 @@
+import { X } from "lucide-react";
+import { memo, type ReactNode } from "react";
+import type { SidePanelTab } from "../hooks/useSidePanelState";
+
+export type SidePanelTabConfig = {
+  key: SidePanelTab;
+  label: string;
+  count: number;
+  content: ReactNode;
+};
+
+interface SidePanelProps {
+  open: boolean;
+  mounted: boolean;
+  tab: SidePanelTab;
+  tabs: SidePanelTabConfig[];
+  onTabChange: (tab: SidePanelTab) => void;
+  onClose: () => void;
+}
+
+// 右侧（竖屏为底部抽屉）的侧栏外壳：评论 / TA的作品 / 搜索结果（或 hashtag）几个标签页
+export const SidePanel = memo(function SidePanel({
+  open,
+  mounted,
+  tab,
+  tabs,
+  onTabChange,
+  onClose,
+}: SidePanelProps) {
+  const visibility = open
+    ? "translate-y-0 pointer-events-auto landscape:w-[min(420px,36vw)] landscape:border-l landscape:border-white/10"
+    : "translate-y-full pointer-events-none landscape:w-0 landscape:border-l-0";
+  // 竖屏时作品网格不需要那么高，给视频多留点位置
+  const portraitHeight =
+    tab === "comments" ? "h-[min(80vh,88dvh)]" : "h-[min(62vh,64dvh)]";
+
+  return (
+    <aside
+      className={`
+        z-30 flex flex-col bg-[rgba(22,22,22,0.92)] text-white overflow-hidden
+        fixed inset-x-0 bottom-0 w-full ${portraitHeight} border-t border-white/10 rounded-t-2xl
+        landscape:relative landscape:inset-auto landscape:h-full landscape:translate-y-0 landscape:border-t-0 landscape:rounded-none
+        ${mounted ? "transition-transform landscape:transition-[width] duration-200 ease-out" : ""}
+        ${visibility}
+      `}
+    >
+      <div className="flex items-center gap-1 px-3 border-b border-white/10 shrink-0">
+        <div
+          className="flex min-w-0 flex-1 items-center gap-5 overflow-x-auto"
+          role="tablist"
+        >
+          {tabs.map((t) => (
+            <button
+              key={t.key}
+              type="button"
+              role="tab"
+              aria-selected={tab === t.key}
+              onClick={() => onTabChange(t.key)}
+              className={`relative shrink-0 max-w-[10em] truncate py-3 text-[15px] transition-colors cursor-pointer ${
+                tab === t.key
+                  ? "font-semibold text-white"
+                  : "text-white/55 hover:text-white/80"
+              }`}
+            >
+              {t.label}
+              {t.count > 0 && (
+                <span className="ml-1 text-xs font-normal text-white/50">
+                  {t.count}
+                </span>
+              )}
+              {tab === t.key && (
+                <span className="absolute inset-x-0 bottom-0 h-0.5 rounded-full bg-rose-400" />
+              )}
+            </button>
+          ))}
+        </div>
+        <button
+          type="button"
+          className="w-8 h-8 shrink-0 inline-flex items-center justify-center rounded-full bg-white/15 text-white/90 border border-white/20 hover:bg-white/25 transition-colors cursor-pointer"
+          onClick={onClose}
+          aria-label="关闭侧栏"
+        >
+          <X size={18} />
+        </button>
+      </div>
+
+      {tabs.map((t) => (
+        <div
+          key={t.key}
+          className={tab === t.key ? "flex min-h-0 flex-1 flex-col" : "hidden"}
+        >
+          {t.content}
+        </div>
+      ))}
+    </aside>
+  );
+});

app/aweme/[awemeId]/components/VideoTagEditor.tsx

@@ -66,7 +66,10 @@ export const VideoTagEditor = memo(function VideoTagEditor({
   };
 
   return (
-    <div className="absolute right-3 top-3 z-40 flex flex-col items-end gap-2">
+    <div
+      data-no-swipe
+      className="absolute right-3 top-3 z-40 flex flex-col items-end gap-2"
+    >
       <button
         type="button"
         onClick={() => setOpen((value) => !value)}

app/aweme/[awemeId]/components/WorksGrid.tsx

@@ -0,0 +1,149 @@
+import { Heart, Images } from "lucide-react";
+import Link from "next/link";
+import { memo, type ReactNode, useEffect, useRef } from "react";
+import { awemeHref } from "@/lib/playback-context";
+import type { PlaylistState } from "../hooks/usePlaylist";
+
+interface WorksGridProps {
+  /** 所在标签页当前可见 */
+  active: boolean;
+  list: PlaylistState;
+  currentId: string;
+  /** 点击作品跳转时带上的播放上下文查询串 */
+  hrefQuery: string;
+  onSelect: () => void;
+  /** 列表只有当前这一个作品时的提示 */
+  singleHint?: string;
+  /** 网格上方的标题栏 */
+  header: ReactNode;
+}
+
+function formatCount(n: number): string {
+  if (n >= 10000) return `${(n / 10000).toFixed(n >= 100000 ? 0 : 1)}万`;
+  return String(n);
+}
+
+function PlayingBars() {
+  return (
+    <span className="flex h-4 items-end gap-0.5" aria-hidden>
+      {[60, 100, 40].map((height, i) => (
+        <span
+          key={height}
+          className="w-1 rounded-sm bg-white animate-pulse"
+          style={{ height: `${height}%`, animationDelay: `${i * 150}ms` }}
+        />
+      ))}
+    </span>
+  );
+}
+
+// 侧栏里的作品封面网格（TA的作品 / 搜索结果 / hashtag 共用）：当前作品标「播放中」，点作品就地切换
+export const WorksGrid = memo(function WorksGrid({
+  active,
+  list,
+  currentId,
+  hrefQuery,
+  onSelect,
+  singleHint,
+  header,
+}: WorksGridProps) {
+  const scrollRef = useRef<HTMLDivElement>(null);
+  const currentRef = useRef<HTMLAnchorElement>(null);
+  const items = list.items ?? [];
+
+  // 让「播放中」的作品保持在可见区域（切换作品或列表加载完成时重新定位）
+  // biome-ignore lint/correctness/useExhaustiveDependencies: currentId / items.length 只用来触发重新定位
+  useEffect(() => {
+    if (!active) return;
+    const container = scrollRef.current;
+    const el = currentRef.current;
+    if (!container || !el) return;
+    const top = el.offsetTop - container.offsetTop;
+    const bottom = top + el.offsetHeight;
+    if (
+      top < container.scrollTop ||
+      bottom > container.scrollTop + container.clientHeight
+    ) {
+      container.scrollTop =
+        top - (container.clientHeight - el.offsetHeight) / 2;
+    }
+  }, [active, currentId, items.length]);
+
+  return (
+    <div className="flex min-h-0 flex-1 flex-col">
+      <div className="flex items-center gap-3 px-3 py-3 border-b border-white/10 shrink-0">
+        {header}
+      </div>
+
+      <div ref={scrollRef} className="comment-scroll flex-1 overflow-auto p-2">
+        {list.loading && !list.items && (
+          <div className="py-10 text-center text-sm text-white/60">
+            加载中...
+          </div>
+        )}
+        {list.error && !list.items && (
+          <div className="py-10 text-center text-sm text-red-300/80">
+            {list.error}
+          </div>
+        )}
+        <div className="grid grid-cols-3 gap-1.5">
+          {items.map((item) => {
+            const isCurrent = item.aweme_id === currentId;
+            return (
+              <Link
+                key={item.aweme_id}
+                ref={isCurrent ? currentRef : undefined}
+                href={awemeHref(item.aweme_id, hrefQuery)}
+                scroll={false}
+                onClick={onSelect}
+                title={item.desc}
+                aria-current={isCurrent ? "true" : undefined}
+                className={`relative block aspect-[3/4] overflow-hidden rounded-md bg-white/5 ${
+                  isCurrent ? "ring-2 ring-rose-400" : "hover:opacity-90"
+                }`}
+              >
+                {item.cover_url ? (
+                  // biome-ignore lint/performance/noImgElement: 封面来自对象存储，不走 next/image
+                  <img
+                    src={item.cover_url}
+                    alt={item.desc?.slice(0, 20) || ""}
+                    loading="lazy"
+                    className="absolute inset-0 h-full w-full object-cover"
+                  />
+                ) : null}
+                <div className="pointer-events-none absolute inset-0 bg-gradient-to-t from-black/60 via-transparent to-transparent" />
+                {item.type === "image" && (
+                  <span className="absolute right-1 top-1 inline-flex items-center gap-0.5 rounded bg-black/55 px-1 py-0.5 text-[10px] text-white/90">
+                    <Images size={10} />
+                    图文
+                  </span>
+                )}
+                {isCurrent ? (
+                  <div className="absolute inset-0 flex flex-col items-center justify-center gap-1.5 bg-black/55 text-xs text-white">
+                    <PlayingBars />
+                    播放中
+                  </div>
+                ) : (
+                  <span className="absolute bottom-1 left-1 inline-flex items-center gap-0.5 text-[11px] text-white/90 drop-shadow">
+                    <Heart size={11} />
+                    {formatCount(item.likes)}
+                  </span>
+                )}
+              </Link>
+            );
+          })}
+        </div>
+        {list.items && items.length <= 1 && singleHint && (
+          <div className="py-6 text-center text-xs text-white/40">
+            {singleHint}
+          </div>
+        )}
+        {list.items && list.total > items.length && (
+          <div className="py-6 text-center text-xs text-white/40">
+            只列出前 {items.length} 个，共 {list.total} 个
+          </div>
+        )}
+      </div>
+    </div>
+  );
+});

app/aweme/[awemeId]/hooks/index.ts

@@ -1,6 +1,6 @@
 // Hooks 导出
 export { useBackgroundCanvas } from "./useBackgroundCanvas";
-export { useCommentState } from "./useCommentState";
+export { useSidePanelState } from "./useSidePanelState";
 export { useImageCarousel } from "./useImageCarousel";
 export { useNavigation } from "./useNavigation";
 export { usePlayerState } from "./usePlayerState";

app/aweme/[awemeId]/hooks/useCommentState.ts

@@ -1,30 +0,0 @@
-import { useEffect, useState } from "react";
-import { getStringFromStorage, saveToStorage } from "../utils";
-
-export function useCommentState() {
-  const [open, setOpen] = useState(false);
-  const [mounted, setMounted] = useState(false);
-
-  // 从 localStorage 恢复评论区状态
-  useEffect(() => {
-    if (typeof window === "undefined") return;
-    const saved = getStringFromStorage("aweme_player_comments_open", "false");
-    if (saved === "true") {
-      setOpen(true);
-    }
-    // 短暂延迟后标记为已挂载，启用动画
-    requestAnimationFrame(() => {
-      requestAnimationFrame(() => {
-        setMounted(true);
-      });
-    });
-  }, []);
-
-  // 持久化评论区状态
-  useEffect(() => {
-    if (typeof window === "undefined") return;
-    saveToStorage("aweme_player_comments_open", open.toString());
-  }, [open]);
-
-  return { open, setOpen, mounted };
-}

app/aweme/[awemeId]/hooks/useImageCarousel.ts

@@ -197,7 +197,7 @@ export function useImageCarousel({
 
       if (fromIndex >= currentImages.length - 1) {
         if (loopMode === "sequential" && neighbors?.next) {
-          router.push(`/aweme/${neighbors.next.aweme_id}`);
+          router.push(neighbors.next.href);
           return;
         }
         idxRef.current = 0;

app/aweme/[awemeId]/hooks/useNavigation.ts

@@ -50,8 +50,8 @@ export function useNavigation({
   // 预取路由
   useEffect(() => {
     if (!neighbors) return;
-    if (neighbors.next) router.prefetch(`/aweme/${neighbors.next.aweme_id}`);
-    if (neighbors.prev) router.prefetch(`/aweme/${neighbors.prev.aweme_id}`);
+    if (neighbors.next) router.prefetch(neighbors.next.href);
+    if (neighbors.prev) router.prefetch(neighbors.prev.href);
   }, [neighbors, router]);
 
   // 鼠标滚轮切换
@@ -72,10 +72,10 @@ export function useNavigation({
 
       if (dy > 0 && neighbors?.next) {
         wheelCooldownRef.current = now;
-        router.push(`/aweme/${neighbors.next.aweme_id}`);
+        router.push(neighbors.next.href);
       } else if (dy < 0 && neighbors?.prev) {
         wheelCooldownRef.current = now;
-        router.push(`/aweme/${neighbors.prev.aweme_id}`);
+        router.push(neighbors.prev.href);
       }
     };
 
@@ -83,6 +83,90 @@ export function useNavigation({
     return () => el.removeEventListener("wheel", onWheel);
   }, [neighbors, mediaContainerRef, router]);
 
+  // 触屏上下滑切换（上滑下一条，下滑上一条）。只认明显的竖向手势，
+  // 不影响图文的左右滑动；从按钮、链接、控制栏（data-no-swipe）上开始的触摸不处理。
+  useEffect(() => {
+    const el = mediaContainerRef.current;
+    if (!el) return;
+
+    let start: { x: number; y: number; t: number } | null = null;
+    let vertical = false;
+
+    const onTouchStart = (e: TouchEvent): void => {
+      const target = e.target as HTMLElement | null;
+      if (
+        e.touches.length !== 1 ||
+        target?.closest(
+          "button, a, input, textarea, select, [role='slider'], [data-no-swipe]",
+        )
+      ) {
+        start = null;
+        return;
+      }
+      const touch = e.touches[0];
+      start = { x: touch.clientX, y: touch.clientY, t: performance.now() };
+      vertical = false;
+    };
+
+    const onTouchMove = (e: TouchEvent): void => {
+      if (!start) return;
+      if (e.touches.length !== 1) {
+        start = null;
+        return;
+      }
+      const touch = e.touches[0];
+      const dx = touch.clientX - start.x;
+      const dy = touch.clientY - start.y;
+      if (!vertical && Math.abs(dy) > 12 && Math.abs(dy) > Math.abs(dx) * 1.5) {
+        vertical = true;
+      }
+      // 竖向手势由我们处理，阻止浏览器下拉刷新 / 回弹
+      if (vertical && e.cancelable) e.preventDefault();
+    };
+
+    const onTouchEnd = (e: TouchEvent): void => {
+      if (!start) return;
+      const touch = e.changedTouches[0];
+      const dy = touch.clientY - start.y;
+      const elapsed = performance.now() - start.t;
+      const wasVertical = vertical;
+      start = null;
+      vertical = false;
+      if (!wasVertical) return;
+
+      // 快速轻扫，或者慢慢拖过屏幕高度的四分之一
+      const flick = Math.abs(dy) > 60 && elapsed < 800;
+      const longDrag = Math.abs(dy) > window.innerHeight * 0.25;
+      if (!flick && !longDrag) return;
+
+      const now = performance.now();
+      if (now - wheelCooldownRef.current < 500) return;
+      if (dy < 0 && neighbors?.next) {
+        wheelCooldownRef.current = now;
+        router.push(neighbors.next.href);
+      } else if (dy > 0 && neighbors?.prev) {
+        wheelCooldownRef.current = now;
+        router.push(neighbors.prev.href);
+      }
+    };
+
+    const onTouchCancel = (): void => {
+      start = null;
+      vertical = false;
+    };
+
+    el.addEventListener("touchstart", onTouchStart, { passive: true });
+    el.addEventListener("touchmove", onTouchMove, { passive: false });
+    el.addEventListener("touchend", onTouchEnd);
+    el.addEventListener("touchcancel", onTouchCancel);
+    return () => {
+      el.removeEventListener("touchstart", onTouchStart);
+      el.removeEventListener("touchmove", onTouchMove);
+      el.removeEventListener("touchend", onTouchEnd);
+      el.removeEventListener("touchcancel", onTouchCancel);
+    };
+  }, [neighbors, mediaContainerRef, router]);
+
   // 键盘快捷键（支持向右箭头 / D 键区分短按与长按 2 倍速，以及视频 [ ] 设置 AB 循环）
   useEffect(() => {
     const clearLongPressTimer = (): void => {
@@ -124,7 +208,7 @@ export function useNavigation({
         if (now - wheelCooldownRef.current < 700) return;
         if (neighbors?.prev) {
           wheelCooldownRef.current = now;
-          router.push(`/aweme/${neighbors.prev.aweme_id}`);
+          router.push(neighbors.prev.href);
         }
       } else if (key === "arrowdown" || key === "s" || code === "KeyS") {
         e.preventDefault();
@@ -132,7 +216,7 @@ export function useNavigation({
         if (now - wheelCooldownRef.current < 700) return;
         if (neighbors?.next) {
           wheelCooldownRef.current = now;
-          router.push(`/aweme/${neighbors.next.aweme_id}`);
+          router.push(neighbors.next.href);
         }
       } else if (key === "arrowleft" || key === "a" || code === "KeyA") {
         e.preventDefault();

app/aweme/[awemeId]/hooks/usePlaylist.ts

@@ -0,0 +1,87 @@
+import { useEffect, useState } from "react";
+import type { PlaylistItem, PlaylistResponse } from "@/lib/playback-context";
+
+// 侧栏列表（作者作品 / 搜索结果 / hashtag）缓存在模块里：切换作品时播放页会重新挂载，
+// 但客户端导航不会清掉 JS 内存，所以在列表里上下切换时可以立刻拿到列表，不用每次重新请求。
+const STALE_MS = 60_000;
+
+type CacheEntry = PlaylistResponse & { fetchedAt: number };
+const cache = new Map<string, CacheEntry>();
+const inflight = new Map<string, Promise<PlaylistResponse>>();
+
+function loadPlaylist(query: string): Promise<PlaylistResponse> {
+  const pending = inflight.get(query);
+  if (pending) return pending;
+  const promise = fetch(`/api/playlist${query}`)
+    .then(async (res) => {
+      if (!res.ok) throw new Error(`加载列表失败 (${res.status})`);
+      const data = (await res.json()) as PlaylistResponse;
+      cache.set(query, { ...data, fetchedAt: Date.now() });
+      return data;
+    })
+    .finally(() => inflight.delete(query));
+  inflight.set(query, promise);
+  return promise;
+}
+
+export type PlaylistState = {
+  items: PlaylistItem[] | null;
+  /** 列表总数（可能多于 items：侧栏最多列出 500 个） */
+  total: number;
+  loading: boolean;
+  error: string | null;
+};
+
+/**
+ * 按播放上下文（/api/playlist 的查询串，含 ?）取作品列表。
+ * query 为空或 enabled 为 false 时不请求。
+ */
+export function usePlaylist(query: string, enabled: boolean): PlaylistState {
+  const [state, setState] = useState<PlaylistState>(() => {
+    const cached = query ? cache.get(query) : undefined;
+    return {
+      items: cached?.items ?? null,
+      total: cached?.total ?? 0,
+      loading: false,
+      error: null,
+    };
+  });
+
+  useEffect(() => {
+    if (!query || !enabled) return;
+    const cached = cache.get(query);
+    setState({
+      items: cached?.items ?? null,
+      total: cached?.total ?? 0,
+      loading: !cached,
+      error: null,
+    });
+    if (cached && Date.now() - cached.fetchedAt < STALE_MS) return;
+
+    let cancelled = false;
+    loadPlaylist(query)
+      .then((data) => {
+        if (!cancelled) {
+          setState({
+            items: data.items,
+            total: data.total,
+            loading: false,
+            error: null,
+          });
+        }
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        setState((prev) => ({
+          ...prev,
+          loading: false,
+          error: err instanceof Error ? err.message : "加载失败",
+        }));
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [query, enabled]);
+
+  return state;
+}

app/aweme/[awemeId]/hooks/useSidePanelState.ts

@@ -0,0 +1,126 @@
+import { useCallback, useEffect, useState } from "react";
+
+/** comments：评论；works：TA的作品；list：搜索结果 / hashtag / 标签列表 */
+export type SidePanelTab = "comments" | "works" | "list";
+
+// 侧栏开关沿用评论区原来的 localStorage 键；停在哪个标签页、是否处于作者模式只在本次会话内记住，
+// 这样下次从首页点进来不会莫名其妙停在作者模式。
+// 切换作品时播放页会整体重新挂载，靠这些存储把状态带到下一个作品。
+const OPEN_KEY = "aweme_player_comments_open";
+const TAB_KEY = "aweme_player_panel_tab";
+const AUTHOR_MODE_KEY = "aweme_player_author_mode";
+
+function readStorage(storage: () => Storage, key: string): string | null {
+  try {
+    return storage().getItem(key);
+  } catch {
+    return null;
+  }
+}
+
+function writeStorage(
+  storage: () => Storage,
+  key: string,
+  value: string | null,
+) {
+  try {
+    if (value === null) storage().removeItem(key);
+    else storage().setItem(key, value);
+  } catch {}
+}
+
+const local = () => window.localStorage;
+const session = () => window.sessionStorage;
+
+export function isPortraitViewport(): boolean {
+  return (
+    typeof window !== "undefined" &&
+    window.matchMedia("(orientation: portrait)").matches
+  );
+}
+
+/**
+ * 侧栏状态与作者模式。
+ * 作者模式和侧栏开关是分开的：打开「TA的作品」进入作者模式（上下切换在该作者的作品里移动），
+ * 关掉侧栏不会退出，只有点顶部提示的 ✕、或切到「搜索结果 / #hashtag」列表才退出。
+ */
+export function useSidePanelState(authorSecUid: string | undefined) {
+  const [open, setOpen] = useState(false);
+  const [tab, setTab] = useState<SidePanelTab>("comments");
+  // 处于作者模式时记下是哪位作者；切到别的作者的作品（例如浏览器后退）时自动不生效
+  const [authorModeFor, setAuthorModeFor] = useState<string | null>(null);
+  const [restored, setRestored] = useState(false);
+  const [mounted, setMounted] = useState(false);
+
+  useEffect(() => {
+    setOpen(readStorage(local, OPEN_KEY) === "true");
+    const savedTab = readStorage(session, TAB_KEY);
+    setTab(savedTab === "works" || savedTab === "list" ? savedTab : "comments");
+    setAuthorModeFor(readStorage(session, AUTHOR_MODE_KEY));
+    setRestored(true);
+    // 恢复完成后再开启过渡动画，避免进入页面时侧栏滑入
+    requestAnimationFrame(() => {
+      requestAnimationFrame(() => setMounted(true));
+    });
+  }, []);
+
+  useEffect(() => {
+    if (!restored) return;
+    writeStorage(local, OPEN_KEY, String(open));
+    writeStorage(session, TAB_KEY, tab);
+    writeStorage(session, AUTHOR_MODE_KEY, authorModeFor);
+  }, [open, tab, authorModeFor, restored]);
+
+  // 切到哪个列表标签页，上下切换就改用哪个列表的顺序；「评论」不影响顺序
+  const applyTabMode = useCallback(
+    (nextTab: SidePanelTab) => {
+      if (nextTab === "works" && authorSecUid) setAuthorModeFor(authorSecUid);
+      else if (nextTab === "list") setAuthorModeFor(null);
+    },
+    [authorSecUid],
+  );
+
+  const selectTab = useCallback(
+    (nextTab: SidePanelTab) => {
+      setTab(nextTab);
+      applyTabMode(nextTab);
+    },
+    [applyTabMode],
+  );
+
+  const show = useCallback(
+    (nextTab: SidePanelTab) => {
+      selectTab(nextTab);
+      setOpen(true);
+    },
+    [selectTab],
+  );
+
+  const close = useCallback(() => setOpen(false), []);
+
+  /** 打开到指定标签页；已经打开在这个标签页时则关闭（关闭不影响顺序） */
+  const toggle = useCallback(
+    (nextTab: SidePanelTab) => {
+      if (open && tab === nextTab) close();
+      else show(nextTab);
+    },
+    [close, open, show, tab],
+  );
+
+  const exitAuthorMode = useCallback(() => setAuthorModeFor(null), []);
+
+  return {
+    open,
+    tab,
+    mounted,
+    /** 上下切换在当前作者的作品里移动 */
+    authorMode: Boolean(authorSecUid) && authorModeFor === authorSecUid,
+    /** 已从存储里恢复完状态（之后才能安全地自动打开侧栏） */
+    restored,
+    selectTab,
+    show,
+    close,
+    toggle,
+    exitAuthorMode,
+  };
+}

app/aweme/[awemeId]/hooks/useVideoPlayer.ts

@@ -181,7 +181,7 @@ export function useVideoPlayer({
       }
 
       if (loopMode === "sequential" && neighbors?.next) {
-        router.push(`/aweme/${neighbors.next.aweme_id}`);
+        router.push(neighbors.next.href);
       }
     };
 

app/aweme/[awemeId]/page.tsx

@@ -1,6 +1,8 @@
 import type { Metadata } from "next";
 import BackButton from "@/app/components/BackButton";
 import { getFileUrl } from "@/lib/minio";
+import { parsePlaybackContext } from "@/lib/playback-context";
+import { resolvePlayback } from "@/lib/playback-context.server";
 import { prisma } from "@/lib/prisma";
 import AwemeDetailClient from "./Client";
 import type { AwemeData, VideoTranscript } from "./types";
@@ -45,8 +47,10 @@ export async function generateMetadata({
 
 export default async function AwemeDetail({
   params,
+  searchParams,
 }: {
   params: Promise<{ awemeId: string }>;
+  searchParams: Promise<Record<string, string | string[] | undefined>>;
 }) {
   const id = (await params).awemeId;
 
@@ -71,12 +75,10 @@ export default async function AwemeDetail({
   });
 
   let data: AwemeData;
-  let currentCreatedAt: Date;
   let transcript: VideoTranscript | null = null;
 
   if (video) {
     transcript = video.transcript ?? null;
-    currentCreatedAt = video.created_at;
     data = {
       type: "video",
       aweme_id: video.aweme_id,
@@ -100,7 +102,6 @@ export default async function AwemeDetail({
     };
   } else if (post) {
     const coverImage = post.images[0];
-    currentCreatedAt = post.created_at;
     data = {
       type: "image",
       aweme_id: post.aweme_id,
@@ -129,65 +130,16 @@ export default async function AwemeDetail({
     return <main className="p-8">找不到该作品</main>;
   }
 
-  // Compute prev/next neighbors by created_at across videos and image posts
-  const [newerVideo, newerPost, olderVideo, olderPost] = await Promise.all([
-    prisma.video.findFirst({
-      where: { created_at: { gt: currentCreatedAt } },
-      orderBy: { created_at: "asc" },
-      select: { aweme_id: true, created_at: true },
-    }),
-    prisma.imagePost.findFirst({
-      where: { created_at: { gt: currentCreatedAt } },
-      orderBy: { created_at: "asc" },
-      select: { aweme_id: true, created_at: true },
-    }),
-    prisma.video.findFirst({
-      where: { created_at: { lt: currentCreatedAt } },
-      orderBy: { created_at: "desc" },
-      select: { aweme_id: true, created_at: true },
-    }),
-    prisma.imagePost.findFirst({
-      where: { created_at: { lt: currentCreatedAt } },
-      orderBy: { created_at: "desc" },
-      select: { aweme_id: true, created_at: true },
-    }),
+  const authorId = video?.authorId ?? post?.authorId ?? null;
+  const [playback, authorWorksCount] = await Promise.all([
+    resolvePlayback(id, parsePlaybackContext(await searchParams)),
+    authorId
+      ? Promise.all([
+          prisma.video.count({ where: { authorId } }),
+          prisma.imagePost.count({ where: { authorId } }),
+        ]).then(([videos, posts]) => videos + posts)
+      : 0,
   ]);
-  const pickPrev = (() => {
-    const cands: { aweme_id: string; created_at: Date }[] = [];
-    if (newerVideo)
-      cands.push({
-        aweme_id: newerVideo.aweme_id,
-        created_at: newerVideo.created_at,
-      });
-    if (newerPost)
-      cands.push({
-        aweme_id: newerPost.aweme_id,
-        created_at: newerPost.created_at,
-      });
-    if (cands.length === 0) return null;
-    cands.sort((a, b) => +a.created_at - +b.created_at);
-    return { aweme_id: cands[0].aweme_id };
-  })();
-  const pickNext = (() => {
-    const cands: { aweme_id: string; created_at: Date }[] = [];
-    if (olderVideo)
-      cands.push({
-        aweme_id: olderVideo.aweme_id,
-        created_at: olderVideo.created_at,
-      });
-    if (olderPost)
-      cands.push({
-        aweme_id: olderPost.aweme_id,
-        created_at: olderPost.created_at,
-      });
-    if (cands.length === 0) return null;
-    cands.sort((a, b) => +b.created_at - +a.created_at);
-    return { aweme_id: cands[0].aweme_id };
-  })();
-  const neighbors: {
-    prev: { aweme_id: string } | null;
-    next: { aweme_id: string } | null;
-  } = { prev: pickPrev, next: pickNext };
 
   return (
     <main className="min-h-screen w-full">
@@ -200,7 +152,10 @@ export default async function AwemeDetail({
       </div>
       <AwemeDetailClient
         data={data}
-        neighbors={neighbors}
+        neighbors={playback.neighbors}
+        playbackContext={playback.context}
+        contextQuery={playback.contextQuery}
+        authorWorksCount={authorWorksCount}
         transcript={transcript}
       />
     </main>

app/aweme/[awemeId]/types.ts

@@ -58,9 +58,22 @@ export type VideoTranscript = {
   transcript: string[];
 };
 
+export type NeighborLink = { aweme_id: string; href: string };
+
 export type Neighbors = {
-  prev: { aweme_id: string } | null;
-  next: { aweme_id: string } | null;
+  prev: NeighborLink | null;
+  next: NeighborLink | null;
+};
+
+export type PlaybackContextInfo = {
+  kind: "search" | "tag" | "hashtag" | "author";
+  /** 顶部提示里的说明，如「搜索「百姓」」 */
+  label: string;
+  /** 侧栏列表标签页的标题，如「搜索结果」「#丰川祥子」 */
+  listTitle: string;
+  /** 从 1 开始 */
+  position: number;
+  total: number;
 };
 
 export type LoopMode = "loop" | "single" | "sequential";

app/components/FeedMasonry.tsx

@@ -17,6 +17,8 @@ type Props = {
   initialItems: FeedItem[];
   initialCursor: string | null;
   fetchUrl?: string;
+  /** 附加在作品链接上的播放上下文查询串（含 ?），决定播放页上下切换的列表 */
+  linkQuery?: string;
 };
 
 type TagUpdateResponse = {
@@ -30,6 +32,7 @@ export default function FeedMasonry({
   initialItems,
   initialCursor,
   fetchUrl = "/api/feed",
+  linkQuery = "",
 }: Props) {
   // 哨兵与容器
   const [cursor, setCursor] = useState<string | null>(initialCursor);
@@ -264,7 +267,7 @@ export default function FeedMasonry({
             </button>
           )}
           <Link
-            href={`/aweme/${item.aweme_id}`}
+            href={`/aweme/${item.aweme_id}${linkQuery}`}
             target="_blank"
             className="block relative w-full"
           >

app/page.tsx

@@ -1,8 +1,9 @@
 import type { Metadata } from "next";
 import Link from "next/link";
-import { VIDEO_CONTENT_TAGS, isVideoContentTag } from "@/lib/video-tags";
 import { getFileUrl } from "@/lib/minio";
+import { playbackContextQuery } from "@/lib/playback-context";
 import { prisma } from "@/lib/prisma";
+import { isVideoContentTag, VIDEO_CONTENT_TAGS } from "@/lib/video-tags";
 import FeedMasonry from "./components/FeedMasonry";
 import SearchBox from "./components/SearchBox";
 import type { FeedItem } from "./types/feed";
@@ -142,6 +143,9 @@ export default async function Home({
                 key={selectedTag ?? "all"}
                 initialItems={initial}
                 initialCursor={cursor}
+                linkQuery={playbackContextQuery(
+                  selectedTag ? { kind: "tag", tag: selectedTag } : null,
+                )}
                 fetchUrl={
                   selectedTag
                     ? `/api/feed?tag=${encodeURIComponent(selectedTag)}`

app/search/SearchClient.tsx

@@ -8,9 +8,11 @@ import {
   type FormEvent,
   useCallback,
   useEffect,
+  useMemo,
   useRef,
   useState,
 } from "react";
+import { playbackContextQuery } from "@/lib/playback-context";
 import type { SnippetPart } from "@/lib/search";
 import { isVideoContentTag, VIDEO_CONTENT_TAGS } from "@/lib/video-tags";
 
@@ -209,6 +211,15 @@ export default function SearchClient({
     router.push("/search");
   };
 
+  // 从搜索结果进入播放页时，上下切换在这次的搜索结果里移动（与当前 URL 上的搜索条件一致）
+  const resultLinkQuery = useMemo(() => {
+    const q = (searchParams.get("q") || "").trim();
+    const tagParam = searchParams.get("tag") || "";
+    const tag = tagParam && isVideoContentTag(tagParam) ? tagParam : null;
+    if (!q && !tag) return "";
+    return playbackContextQuery({ kind: "search", q, tag });
+  }, [searchParams]);
+
   return (
     <div className="min-h-screen bg-zinc-950 text-white">
       {/* 顶部搜索栏 */}
@@ -333,7 +344,7 @@ export default function SearchClient({
                     <div className="flex gap-4 p-4">
                       {/* 左侧：封面预览 */}
                       <Link
-                        href={`/aweme/${content.aweme_id}`}
+                        href={`/aweme/${content.aweme_id}${resultLinkQuery}`}
                         target="_blank"
                         className="flex-shrink-0 w-64 h-80 sm:w-70 sm:h-96 rounded-xl overflow-hidden bg-zinc-900 group"
                       >
@@ -388,7 +399,7 @@ export default function SearchClient({
 
                         {/* 描述 */}
                         <Link
-                          href={`/aweme/${content.aweme_id}`}
+                          href={`/aweme/${content.aweme_id}${resultLinkQuery}`}
                           target="_blank"
                         >
                           <p className="text-white/90 text-sm sm:text-base line-clamp-3 mb-3 hover:text-white transition-colors">

lib/hashtag.ts

@@ -0,0 +1,49 @@
+// 从作品描述里解析抖音 hashtag（#xxx）。
+// 前端渲染可点击的 hashtag 与后端按 hashtag 精确筛选作品共用这里的边界规则，
+// 保证「点了 #丰川祥子 看到的列表」不会混进 #丰川祥子cos。
+
+// hashtag 在遇到空白、下一个 #、或这些标点时结束
+const STOP_CHARS =
+  "#，。！？、；：,.!?;:()（）【】\\[\\]《》<>\"'“”‘’…~～|/\\\\@";
+const MAX_HASHTAG_LENGTH = 50;
+
+const HASHTAG_RE = new RegExp(`#([^\\s${STOP_CHARS}]+)`, "gu");
+
+export type DescPart =
+  | { type: "text"; text: string }
+  | { type: "hashtag"; text: string; name: string };
+
+/** 把描述切成普通文字与 hashtag 片段。 */
+export function parseDescHashtags(desc: string): DescPart[] {
+  const parts: DescPart[] = [];
+  let cursor = 0;
+  for (const m of desc.matchAll(HASHTAG_RE)) {
+    const start = m.index ?? 0;
+    if (start > cursor) {
+      parts.push({ type: "text", text: desc.slice(cursor, start) });
+    }
+    parts.push({ type: "hashtag", text: m[0], name: m[1] });
+    cursor = start + m[0].length;
+  }
+  if (cursor < desc.length) {
+    parts.push({ type: "text", text: desc.slice(cursor) });
+  }
+  return parts;
+}
+
+/** 规范化 hashtag 名（去掉开头的 #、首尾空白，限制长度）；不合法时返回 null。 */
+export function normalizeHashtag(raw: string): string | null {
+  const name = raw.trim().replace(/^#+/, "").slice(0, MAX_HASHTAG_LENGTH);
+  if (!name) return null;
+  if (new RegExp(`[\\s${STOP_CHARS}]`, "u").test(name)) return null;
+  return name;
+}
+
+/**
+ * 匹配 lower() 后描述文本的 Postgres 正则（ARE）：#名字 之后必须是结束符或文本末尾。
+ * 名字里的正则特殊字符会被转义。
+ */
+export function hashtagToPgPattern(name: string): string {
+  const escaped = name.toLowerCase().replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+  return `#${escaped}([\\s${STOP_CHARS}]|$)`;
+}

lib/playback-context.server.ts

@@ -0,0 +1,199 @@
+import { Prisma } from "@prisma/client";
+import { hashtagToPgPattern } from "@/lib/hashtag";
+import { getFileUrl } from "@/lib/minio";
+import {
+  awemeHref,
+  type PlaybackContext,
+  type PlaylistItem,
+  playbackContextQuery,
+} from "@/lib/playback-context";
+import { prisma } from "@/lib/prisma";
+import { parseSearchQuery } from "@/lib/search";
+import { searchIds } from "@/lib/search-query";
+
+export type NeighborLink = { aweme_id: string; href: string };
+
+export type PlaybackNeighbors = {
+  prev: NeighborLink | null;
+  next: NeighborLink | null;
+};
+
+export type PlaybackContextInfo = {
+  kind: PlaybackContext["kind"];
+  /** 顶部提示里的说明，如「搜索「百姓」」 */
+  label: string;
+  /** 侧栏列表标签页的标题，如「搜索结果」「#丰川祥子」 */
+  listTitle: string;
+  /** 从 1 开始 */
+  position: number;
+  total: number;
+};
+
+export type ResolvedPlayback = {
+  neighbors: PlaybackNeighbors;
+  /** 当前生效的上下文（URL 里的上下文不包含当前作品时为 null，退回全部作品） */
+  context: PlaybackContextInfo | null;
+  /** URL 里原本的上下文查询串，侧栏里跳转时原样带上 */
+  contextQuery: string;
+};
+
+/** 侧栏一次最多列出的作品数（搜索词很宽泛时避免一次塞几千张封面） */
+export const PLAYLIST_LIMIT = 500;
+
+// 全部作品 / 某作者的作品 / 带某个 hashtag 的作品：视频与图文合并，按发布时间倒序（与首页、作者页一致）
+async function timelineIds(filter: Prisma.Sql = Prisma.empty) {
+  const rows = await prisma.$queryRaw<{ id: string }[]>`
+    SELECT aweme_id AS id FROM (
+      SELECT aweme_id, created_at, "authorId", "desc" FROM "Video"
+      UNION ALL
+      SELECT aweme_id, created_at, "authorId", "desc" FROM "ImagePost"
+    ) works
+    ${filter}
+    ORDER BY created_at DESC, aweme_id DESC
+  `;
+  return rows.map((r) => r.id);
+}
+
+// 数据量小（全库约两千个作品），直接取完整的有序 ID 列表再定位当前作品，
+// 比为每种上下文分别写游标查询简单得多。数据量大了再换成游标查询，前端不用动。
+export async function contextIds(
+  ctx: PlaybackContext | null,
+): Promise<string[]> {
+  if (!ctx) return timelineIds();
+  switch (ctx.kind) {
+    case "author":
+      return timelineIds(Prisma.sql`WHERE "authorId" = ${ctx.secUid}`);
+    case "hashtag":
+      return timelineIds(
+        Prisma.sql`WHERE lower("desc") ~ ${hashtagToPgPattern(ctx.name)}`,
+      );
+    case "tag":
+      return searchIds({ terms: [], excludes: [], contentTag: ctx.tag });
+    case "search": {
+      const { terms, excludes } = parseSearchQuery(ctx.q);
+      if (terms.length === 0 && !ctx.tag) return [];
+      return searchIds({ terms, excludes, contentTag: ctx.tag });
+    }
+  }
+}
+
+async function contextLabels(
+  ctx: PlaybackContext,
+): Promise<{ label: string; listTitle: string }> {
+  switch (ctx.kind) {
+    case "search":
+      if (!ctx.q) return { label: `标签「${ctx.tag}」`, listTitle: "搜索结果" };
+      return {
+        label: ctx.tag ? `搜索「${ctx.q}」· ${ctx.tag}` : `搜索「${ctx.q}」`,
+        listTitle: "搜索结果",
+      };
+    case "tag":
+      return { label: `标签「${ctx.tag}」`, listTitle: ctx.tag };
+    case "hashtag":
+      return { label: `#${ctx.name}`, listTitle: `#${ctx.name}` };
+    case "author": {
+      const author = await prisma.author.findUnique({
+        where: { sec_uid: ctx.secUid },
+        select: { nickname: true },
+      });
+      const label = `${author?.nickname ?? "作者"} 的作品`;
+      return { label, listTitle: label };
+    }
+  }
+}
+
+function neighborsAt(
+  ids: string[],
+  index: number,
+  query: string,
+): PlaybackNeighbors {
+  const link = (id: string | undefined) =>
+    id ? { aweme_id: id, href: awemeHref(id, query) } : null;
+  return { prev: link(ids[index - 1]), next: link(ids[index + 1]) };
+}
+
+export async function resolvePlayback(
+  awemeId: string,
+  ctx: PlaybackContext | null,
+): Promise<ResolvedPlayback> {
+  const contextQuery = playbackContextQuery(ctx);
+
+  if (ctx) {
+    const [ids, labels] = await Promise.all([
+      contextIds(ctx),
+      contextLabels(ctx),
+    ]);
+    const index = ids.indexOf(awemeId);
+    if (index !== -1) {
+      return {
+        neighbors: neighborsAt(ids, index, contextQuery),
+        context: {
+          kind: ctx.kind,
+          ...labels,
+          position: index + 1,
+          total: ids.length,
+        },
+        contextQuery,
+      };
+    }
+    // 当前作品不在这个列表里（例如在作者模式里切到了不在搜索结果中的作品），
+    // 退回全部作品的顺序；继续往下切时不再带上原来的上下文。
+  }
+
+  const ids = await timelineIds();
+  const index = ids.indexOf(awemeId);
+  return {
+    neighbors:
+      index === -1 ? { prev: null, next: null } : neighborsAt(ids, index, ""),
+    context: null,
+    contextQuery,
+  };
+}
+
+/** 按上下文顺序列出作品（供侧栏网格使用），最多 PLAYLIST_LIMIT 个。 */
+export async function contextItems(
+  ctx: PlaybackContext,
+): Promise<{ items: PlaylistItem[]; total: number }> {
+  const allIds = await contextIds(ctx);
+  const ids = allIds.slice(0, PLAYLIST_LIMIT);
+  const [videos, posts] = await Promise.all([
+    prisma.video.findMany({
+      where: { aweme_id: { in: ids } },
+      select: { aweme_id: true, desc: true, cover_url: true, digg_count: true },
+    }),
+    prisma.imagePost.findMany({
+      where: { aweme_id: { in: ids } },
+      select: {
+        aweme_id: true,
+        desc: true,
+        digg_count: true,
+        images: { orderBy: { order: "asc" }, take: 1, select: { url: true } },
+      },
+    }),
+  ]);
+
+  const byId = new Map<string, PlaylistItem>();
+  for (const v of videos) {
+    byId.set(v.aweme_id, {
+      aweme_id: v.aweme_id,
+      type: "video",
+      desc: v.desc,
+      cover_url: v.cover_url ? getFileUrl(v.cover_url) : null,
+      likes: Number(v.digg_count),
+    });
+  }
+  for (const p of posts) {
+    byId.set(p.aweme_id, {
+      aweme_id: p.aweme_id,
+      type: "image",
+      desc: p.desc,
+      cover_url: p.images[0] ? getFileUrl(p.images[0].url) : null,
+      likes: Number(p.digg_count),
+    });
+  }
+
+  const items = ids
+    .map((id) => byId.get(id))
+    .filter((item): item is PlaylistItem => Boolean(item));
+  return { items, total: allIds.length };
+}

lib/playback-context.ts

@@ -0,0 +1,82 @@
+// 播放上下文：播放页「上一条 / 下一条」在哪个列表里移动。
+// 它放在 /aweme/<id> 的查询参数里，刷新、新标签页打开、后退都不会丢：
+//   （无）                          全部作品，按发布时间倒序（和首页一致）
+//   ?ctx=tag&tag=美女               某个标签
+//   ?ctx=author&author=<secUid>     某个作者的作品
+//   ?ctx=search&q=百姓&tag=…        某次搜索的结果
+//   ?ctx=hashtag&hashtag=丰川祥子    描述里带某个 hashtag 的作品
+// 这个文件只放纯函数，客户端组件也可以引用；查数据库的部分在 playback-context.server.ts。
+import { normalizeHashtag } from "@/lib/hashtag";
+import { isVideoContentTag } from "@/lib/video-tags";
+
+export type PlaybackContext =
+  | { kind: "search"; q: string; tag: string | null }
+  | { kind: "tag"; tag: string }
+  | { kind: "hashtag"; name: string }
+  | { kind: "author"; secUid: string };
+
+/** 播放页侧栏网格里的一项（/api/playlist 的返回） */
+export type PlaylistItem = {
+  aweme_id: string;
+  type: "video" | "image";
+  desc: string;
+  cover_url: string | null;
+  likes: number;
+};
+
+export type PlaylistResponse = { items: PlaylistItem[]; total: number };
+
+type ParamSource =
+  | URLSearchParams
+  | Record<string, string | string[] | undefined>;
+
+function readParam(source: ParamSource, key: string): string {
+  const value =
+    source instanceof URLSearchParams ? source.get(key) : source[key];
+  return (Array.isArray(value) ? value[0] : value)?.trim() ?? "";
+}
+
+export function parsePlaybackContext(
+  source: ParamSource,
+): PlaybackContext | null {
+  const kind = readParam(source, "ctx");
+  const tag = readParam(source, "tag");
+  const validTag = tag && isVideoContentTag(tag) ? tag : null;
+
+  if (kind === "search") {
+    const q = readParam(source, "q");
+    if (!q && !validTag) return null;
+    return { kind: "search", q, tag: validTag };
+  }
+  if (kind === "tag" && validTag) return { kind: "tag", tag: validTag };
+  if (kind === "hashtag") {
+    const name = normalizeHashtag(readParam(source, "hashtag"));
+    if (name) return { kind: "hashtag", name };
+  }
+  if (kind === "author") {
+    const secUid = readParam(source, "author");
+    if (secUid) return { kind: "author", secUid };
+  }
+  return null;
+}
+
+/** 生成带上下文的查询串（含开头的 ?）；没有上下文时返回空串。 */
+export function playbackContextQuery(ctx: PlaybackContext | null): string {
+  if (!ctx) return "";
+  const params = new URLSearchParams({ ctx: ctx.kind });
+  if (ctx.kind === "search") {
+    if (ctx.q) params.set("q", ctx.q);
+    if (ctx.tag) params.set("tag", ctx.tag);
+  } else if (ctx.kind === "tag") {
+    params.set("tag", ctx.tag);
+  } else if (ctx.kind === "hashtag") {
+    params.set("hashtag", ctx.name);
+  } else {
+    params.set("author", ctx.secUid);
+  }
+  return `?${params.toString()}`;
+}
+
+export function awemeHref(awemeId: string, query = ""): string {
+  return `/aweme/${awemeId}${query}`;
+}

lib/search-query.ts

@@ -0,0 +1,115 @@
+// 搜索的 SQL 部分：搜索接口（分页取结果）和播放页（取完整的有序 ID 列表算上一条/下一条）
+// 共用同一段匹配与排序逻辑，保证两边顺序完全一致。
+import { Prisma } from "@prisma/client";
+import { prisma } from "@/lib/prisma";
+import { termToPgPattern } from "@/lib/search";
+
+export type SearchInput = {
+  /** 已转小写的关键词（parseSearchQuery 的结果） */
+  terms: string[];
+  excludes: string[];
+  contentTag: string | null;
+};
+
+export type SearchRow = {
+  awemeId: string;
+  type: "video" | "image";
+  score: number;
+  inDesc: boolean;
+  inTranscript: boolean;
+  rawDesc: string;
+  rawTranscript: string;
+  contentTags: string[];
+  total: number;
+};
+
+// 子串匹配：每个关键词都必须出现在「描述 + 语音转写」里（不区分大小写），
+// 不依赖分词，所以输入任意片段都能搜到。数据量小，全表扫描足够快。
+// 打分：描述命中权重更高，按出现次数累加（设上限防止长转写刷分）；同分按发布时间倒序。
+// 没有关键词、只按标签筛选时，score 都是 0，等价于按时间排序。
+function matchedCte({ terms, excludes, contentTag }: SearchInput) {
+  const patterns = terms.map(termToPgPattern);
+  const excludePatterns = excludes.map(termToPgPattern);
+  return Prisma.sql`
+    WITH params AS (
+      SELECT ${patterns}::text[] AS terms, ${excludePatterns}::text[] AS excludes
+    ),
+    docs AS (
+      SELECT
+        v.aweme_id AS "awemeId",
+        'video'::text AS type,
+        v."desc" AS "rawDesc",
+        COALESCE(array_to_string(vt.transcript, E'\n'), '') AS "rawTranscript",
+        v.created_at AS created,
+        v.manual_content_tags AS "contentTags"
+      FROM "Video" v
+      LEFT JOIN "VideoTranscript" vt ON vt."videoId" = v.aweme_id
+      WHERE ${contentTag}::text IS NULL
+         OR v.manual_content_tags @> ARRAY[${contentTag}]::text[]
+
+      UNION ALL
+
+      SELECT
+        ip.aweme_id,
+        'image'::text,
+        ip."desc",
+        '',
+        ip.created_at,
+        ARRAY[]::text[]
+      FROM "ImagePost" ip
+      WHERE ${contentTag}::text IS NULL
+    ),
+    lowered AS (
+      SELECT docs.*, lower(docs."rawDesc") AS d, lower(docs."rawTranscript") AS t
+      FROM docs
+    ),
+    matched AS (
+      SELECT
+        l.*,
+        COALESCE((
+          SELECT SUM(
+            4 * LEAST(regexp_count(l.d, term), 3)
+            + LEAST(regexp_count(l.t, term), 10)
+          )
+          FROM unnest(p.terms) term
+        ), 0)::float8 AS score,
+        EXISTS (SELECT 1 FROM unnest(p.terms) term WHERE l.d ~ term) AS "inDesc",
+        EXISTS (SELECT 1 FROM unnest(p.terms) term WHERE l.t ~ term) AS "inTranscript"
+      FROM lowered l, params p
+      WHERE NOT EXISTS (
+          SELECT 1 FROM unnest(p.terms) term
+          WHERE l.d !~ term AND l.t !~ term
+        )
+        AND NOT EXISTS (
+          SELECT 1 FROM unnest(p.excludes) x
+          WHERE l.d ~ x OR l.t ~ x
+        )
+    )
+  `;
+}
+
+const ORDER_BY = Prisma.sql`ORDER BY score DESC, created DESC, "awemeId"`;
+
+export function searchRows(input: SearchInput, offset: number, limit: number) {
+  return prisma.$queryRaw<SearchRow[]>`
+    ${matchedCte(input)}
+    SELECT
+      "awemeId", type, score, "inDesc", "inTranscript",
+      "rawDesc", "rawTranscript", "contentTags",
+      (COUNT(*) OVER ())::int AS total
+    FROM matched
+    ${ORDER_BY}
+    OFFSET ${offset}
+    LIMIT ${limit};
+  `;
+}
+
+/** 按搜索结果顺序返回全部命中作品的 ID。 */
+export async function searchIds(input: SearchInput): Promise<string[]> {
+  const rows = await prisma.$queryRaw<{ awemeId: string }[]>`
+    ${matchedCte(input)}
+    SELECT "awemeId" FROM matched
+    ${ORDER_BY};
+  `;
+  return rows.map((r) => r.awemeId);
+}