feat: 优化交互

docs/design-system.md

@@ -195,6 +195,8 @@ div.flex.h-dvh.flex-col                 ← (app)/layout.tsx
 | 登录页入场 | 点阵场淡入 → 卡片上浮 → 标语逐字打出 | variants `delayChildren / staggerChildren`、`TypeText` |
 | 资源卡片 | 角标准星：悬停出现，移到下一张时滑过去（120ms 内穿过间隙不隐藏），离开消失；键盘聚焦同样跟随；虚拟列表重新测量后自动贴回 | `useFollowHighlight` + `Reticle`（`bg-corner-brackets`） |
 | 视频封面 | 光标附近的点阵亮成翠绿 | `useSpotlight`（`useMotionTemplate` 径向遮罩）+ `bg-dot-grid` 的 `--dot-color / --dot-size` |
+| 上次播放 | 打开过的视频封面底色染成翠绿、点阵常亮并标「上次播放」；关掉弹窗后仍保留，换看另一个时转移过去（只标一个，刷新页面后清除） | `LibraryList` 持有 `lastPlayed`，经行 prop `playedFileId` 传给 `FileCard`；封面用 `data-played` 切换样式 |
+| 图片封面加载 | 图片就绪前，翠绿点阵被一道光带反复扫亮并显示「加载中」；加载超过 0.15s 才出现，缓存命中不闪；就绪后图片淡入、覆盖层淡出；减弱动态效果时只留静态点阵与转圈 | `ImageCover` + `IMAGE_LOADING`（`animate` 驱动 MotionValue 生成遮罩，不触发 React 渲染） |
 | 卡片行 | 行挂载时（首屏、筛选、展开）按列依次浮现 | `FileGrid animated` + `FileGridItem` |
 | 工具栏数字 | 资源数、文件数、总大小、来源计数滚动到新值 | `AnimatedNumber` |
 | 分组标题 | 24 小时内加入的资源显示呼吸的 NEW | `NewBadge`，以数据拉取时间为「现在」 |

src/app/(app)/components/file-card.tsx

@@ -9,6 +9,7 @@ import {
   DownloadIcon,
   EyeIcon,
   FileIcon,
+  HistoryIcon,
   HourglassIcon,
   ImageOffIcon,
   MonitorPlayIcon,
@@ -24,7 +25,9 @@ import {
   TooltipContent,
   TooltipTrigger
 } from "@/components/ui/tooltip";
+import { preloadVideoPlayer } from "@/components/video-player-loader";
 import { SPOTLIGHT } from "@/constants/motion";
+import { BROWSER_VIDEO_EXT } from "@/constants/torbox";
 import { useCopy } from "@/hooks/use-copy";
 import type { LibraryFileView } from "@/hooks/use-library";
 import { useOrigin } from "@/hooks/use-origin";
@@ -34,6 +37,7 @@ import { formatBytes } from "@/utils/format";
 import type { DownloadStatus } from "@/types/torbox";
 import { buildStreamUrl, toPotPlayerUrl, type MediaKind } from "@/utils/media";
 
+import { ImageCover } from "./image-cover";
 import { CARD_FOCUS_PROPS } from "./library-dom";
 
 const ExtLabel = ({ ext }: { ext: string }) => (
@@ -57,18 +61,40 @@ const PlaceholderCover = ({
 /**
  * 视频封面：点击在网页内播放。点阵底纹上叠一层翠绿点阵，用跟随鼠标的径向遮罩只露出光标附近的部分。
  * 两层同格叠放、内边距放在内容层，保证点阵对齐；按钮内只能放行内元素，层都用 span。
+ * played：刚看过的那个视频，底色染上翠绿并标出「上次播放」，关掉弹窗后一眼能找回。
  */
-const VideoCover = ({ ext, onPlay }: { ext: string; onPlay: () => void }) => {
+const VideoCover = ({
+  ext,
+  played,
+  onPlay
+}: {
+  ext: string;
+  played: boolean;
+  onPlay: () => void;
+}) => {
   const { maskImage, opacity, handlers } = useSpotlight(SPOTLIGHT);
+  // 指向或聚焦时提前下载播放器；浏览器解不了的格式会走 HLS，一并预热引擎
+  const preload = () => preloadVideoPlayer(!BROWSER_VIDEO_EXT.has(ext));
 
   return (
     <button
       type="button"
       title="播放"
-      className="group/cover grid aspect-video bg-muted bg-dot-grid *:col-start-1 *:row-start-1"
+      className="group/cover grid aspect-video bg-muted bg-dot-grid transition-colors duration-300 *:col-start-1 *:row-start-1 data-[played]:bg-[color-mix(in_oklab,var(--primary)_16%,var(--muted))]"
+      data-played={played ? "" : undefined}
       onClick={onPlay}
       {...handlers}
+      onPointerEnter={(event) => {
+        handlers.onPointerEnter(event);
+        preload();
+      }}
+      onFocus={preload}
     >
+      {/* 看过的封面：整片点阵常亮为翠绿 */}
+      <span
+        aria-hidden="true"
+        className="bg-dot-grid opacity-0 transition-opacity duration-300 [--dot-color:var(--primary)] [--dot-size:1.5px] group-data-[played]/cover:opacity-45"
+      />
       <motion.span
         aria-hidden="true"
         className="bg-dot-grid [--dot-color:var(--primary)] [--dot-size:1.5px]"
@@ -81,7 +107,18 @@ const VideoCover = ({ ext, onPlay }: { ext: string; onPlay: () => void }) => {
         <span className="flex size-11 items-center justify-center self-center rounded-full bg-primary text-primary-foreground transition-[scale,box-shadow] group-hover/cover:scale-110 group-hover/cover:shadow-[0_0_0_6px] group-hover/cover:shadow-primary/20">
           <PlayIcon className="size-5 fill-current" aria-hidden="true" />
         </span>
-        <span className="h-5" aria-hidden="true" />
+        {played ? (
+          <motion.span
+            className="flex h-5 items-center gap-1 font-mono text-xs text-primary"
+            initial={{ opacity: 0, y: 4 }}
+            animate={{ opacity: 1, y: 0 }}
+          >
+            <HistoryIcon className="size-3.5" aria-hidden="true" />
+            上次播放
+          </motion.span>
+        ) : (
+          <span className="h-5" aria-hidden="true" />
+        )}
       </span>
     </button>
   );
@@ -155,9 +192,17 @@ type FileCardProps = {
   status: DownloadStatus;
   /** 打开文件：视频进入网页播放器，图片进入预览灯箱；两者都由列表统一渲染 */
   onOpen: () => void;
+  /** 这是最近播放的视频，封面高亮 */
+  played?: boolean;
 };
 
-export const FileCard = ({ file, token, status, onOpen }: FileCardProps) => {
+export const FileCard = ({
+  file,
+  token,
+  status,
+  onOpen,
+  played = false
+}: FileCardProps) => {
   const origin = useOrigin();
   const copy = useCopy();
   const [imageFailed, setImageFailed] = useState(false);
@@ -182,24 +227,15 @@ export const FileCard = ({ file, token, status, onOpen }: FileCardProps) => {
       />
     );
   } else if (file.kind === "video") {
-    cover = <VideoCover ext={file.ext} onPlay={onOpen} />;
+    cover = <VideoCover ext={file.ext} played={played} onPlay={onOpen} />;
   } else if (file.kind === "image" && !imageFailed) {
     cover = (
-      <button
-        type="button"
-        title="预览图片"
-        className="flex aspect-video overflow-hidden bg-muted"
-        onClick={onOpen}
-      >
-        {/* eslint-disable-next-line @next/next/no-img-element */}
-        <img
-          src={streamUrl}
-          alt={file.displayName}
-          loading="lazy"
-          className="size-full object-cover transition-transform hover:scale-105"
-          onError={() => setImageFailed(true)}
-        />
-      </button>
+      <ImageCover
+        src={streamUrl}
+        alt={file.displayName}
+        onOpen={onOpen}
+        onError={() => setImageFailed(true)}
+      />
     );
   } else {
     cover = (

src/app/(app)/components/image-cover.tsx

@@ -0,0 +1,88 @@
+// 图片封面：加载中用点阵扫光 + 转圈提示，加载完成后淡入
+"use client";
+
+import { useEffect, useState } from "react";
+import {
+  AnimatePresence,
+  animate,
+  motion,
+  useMotionValue,
+  useReducedMotion,
+  useTransform
+} from "motion/react";
+
+import { Spinner } from "@/components/ui/spinner";
+import { IMAGE_LOADING } from "@/constants/motion";
+
+/** 加载中的覆盖层：翠绿点阵上有一道光带从左扫到右，中间是转圈与文字 */
+const LoadingOverlay = () => {
+  const reduced = useReducedMotion();
+  const progress = useMotionValue(0);
+  // 光带在 -40% ~ 140% 之间移动，起止都在封面之外
+  const maskImage = useTransform(progress, (value) => {
+    const head = value * 180 - 40;
+    return `linear-gradient(100deg, transparent ${head - 40}%, #000 ${head - 15}%, transparent ${head}%)`;
+  });
+
+  useEffect(() => {
+    if (reduced) return;
+    const controls = animate(progress, 1, IMAGE_LOADING.sweep);
+    return () => controls.stop();
+  }, [reduced, progress]);
+
+  return (
+    <motion.span
+      aria-hidden="true"
+      className="grid grid-cols-1 grid-rows-1 *:col-start-1 *:row-start-1"
+      initial={{ opacity: 0 }}
+      animate={{ opacity: 1, transition: { delay: IMAGE_LOADING.showDelay } }}
+      exit={{ opacity: 0, transition: IMAGE_LOADING.fade }}
+    >
+      <span className="bg-dot-grid opacity-60 [--dot-color:var(--primary)] [--dot-size:1px]" />
+      <motion.span
+        className="bg-dot-grid [--dot-color:var(--primary)] [--dot-size:1.8px]"
+        style={{ maskImage: reduced ? undefined : maskImage }}
+      />
+      <span className="flex items-center justify-center">
+        <span className="flex items-center gap-1.5 rounded-full bg-background/70 py-1 pr-2.5 pl-2 font-mono text-xs text-primary backdrop-blur-sm">
+          <Spinner className="size-3.5" />
+          加载中
+        </span>
+      </span>
+    </motion.span>
+  );
+};
+
+type ImageCoverProps = {
+  src: string;
+  alt: string;
+  onOpen: () => void;
+  onError: () => void;
+};
+
+/** 图片封面：点击打开预览灯箱；图片就绪前显示加载状态，就绪后淡入 */
+export const ImageCover = ({ src, alt, onOpen, onError }: ImageCoverProps) => {
+  const [loaded, setLoaded] = useState(false);
+
+  return (
+    <button
+      type="button"
+      title="预览图片"
+      className="grid aspect-video grid-cols-1 grid-rows-1 overflow-hidden bg-muted *:col-start-1 *:row-start-1"
+      aria-busy={!loaded}
+      onClick={onOpen}
+    >
+      <AnimatePresence>{!loaded && <LoadingOverlay />}</AnimatePresence>
+      {/* eslint-disable-next-line @next/next/no-img-element */}
+      <img
+        src={src}
+        alt={alt}
+        loading="lazy"
+        className="size-full object-cover opacity-0 transition-[opacity,scale] duration-300 hover:scale-105 data-[loaded]:opacity-100"
+        data-loaded={loaded ? "" : undefined}
+        onLoad={() => setLoaded(true)}
+        onError={onError}
+      />
+    </button>
+  );
+};

src/app/(app)/components/item-download-status.tsx

@@ -35,7 +35,7 @@ export const ItemDownloadStatus = ({ item }: { item: LibraryItemView }) => {
         className="hidden w-20 sm:flex"
       />
       <span className="font-mono tabular-nums min-w-8">{percent}%</span>
-      <span>{label}</span>
+      <span className="max-sm:hidden">{label}</span>
     </span>
   );
 };

src/app/(app)/components/library-image-preview.tsx

@@ -1,15 +1,22 @@
 // 资源库图片预览：一个资源分组（抽屉）内的图片为一组，只在组内切换
 "use client";
 
-import { useMemo } from "react";
+import { useMemo, useState } from "react";
+import dynamic from "next/dynamic";
 
-import { ImageLightbox, type LightboxImage } from "@/components/image-lightbox";
+import type { LightboxImage } from "@/components/image-lightbox";
 import type { LibraryItemView } from "@/hooks/use-library";
 import { useOrigin } from "@/hooks/use-origin";
 import { buildStreamUrl } from "@/utils/media";
 
 import { findLibraryItem, type LibraryFileTarget } from "./library-rows";
 
+/** 灯箱连同样式较大，第一次预览图片时才加载 */
+const ImageLightbox = dynamic(
+  () => import("@/components/image-lightbox").then((mod) => mod.ImageLightbox),
+  { ssr: false }
+);
+
 type LibraryImagePreviewProps = {
   /** 列表当前展示的资源（已筛选、排序），组内图片顺序与抽屉中一致 */
   items: LibraryItemView[];
@@ -51,6 +58,11 @@ export const LibraryImagePreview = ({
     ? files.findIndex((file) => file.id === target.fileId)
     : -1;
 
+  // 首次打开后保持挂载，关闭时才有退场动画
+  const [activated, setActivated] = useState(false);
+  if (index >= 0 && !activated) setActivated(true);
+  if (!activated) return null;
+
   return (
     <ImageLightbox
       images={images}

src/app/(app)/components/library-list.tsx

@@ -145,6 +145,8 @@ type RowViewProps = {
   index: number;
   columns: number;
   token: string;
+  /** 本行里最近播放的视频（文件 id），没有则为 null */
+  playedFileId: number | null;
   scrollRef: React.RefObject<HTMLDivElement | null>;
   measure: (element: HTMLDivElement | null) => void;
   onToggle: (row: HeaderRow, index: number) => void;
@@ -157,6 +159,7 @@ const RowView = memo(function RowView({
   index,
   columns,
   token,
+  playedFileId,
   scrollRef,
   measure,
   onToggle,
@@ -202,6 +205,7 @@ const RowView = memo(function RowView({
                 file={file}
                 token={token}
                 status={row.status}
+                played={file.id === playedFileId}
                 onOpen={() =>
                   onOpen({
                     itemKey: row.itemKey,
@@ -376,6 +380,13 @@ const VirtualRows = ({
   // 全屏、缩放窗口会改变列数并重建卡片行，放在卡片里会被卸载、中断播放
   const [opened, setOpened] = useState<OpenedFile | null>(null);
   const closeOpened = useCallback(() => setOpened(null), []);
+  // 最近播放的视频：关掉弹窗后封面保持高亮，方便找回刚看的是哪个；换一个视频后转移过去
+  const [lastPlayed, setLastPlayed] = useState<LibraryFileTarget | null>(null);
+  const openFile = useCallback((file: OpenedFile) => {
+    setOpened(file);
+    if (file.kind === "video")
+      setLastPlayed({ itemKey: file.itemKey, fileId: file.fileId });
+  }, []);
   const changePreview = useCallback(
     (target: LibraryFileTarget | null) =>
       setOpened(target && { ...target, kind: "image" }),
@@ -424,19 +435,27 @@ const VirtualRows = ({
     virtualizer.measurementsCache,
     virtualizer.getTotalSize()
   );
-  const renderRow = (item: VirtualItem) => (
-    <RowView
-      key={item.key}
-      row={rows[item.index]}
-      index={item.index}
-      columns={columns}
-      token={token}
-      scrollRef={scrollRef}
-      measure={virtualizer.measureElement}
-      onToggle={onToggleHeader}
-      onOpen={setOpened}
-    />
-  );
+  const renderRow = (item: VirtualItem) => {
+    const row = rows[item.index];
+    return (
+      <RowView
+        key={item.key}
+        row={row}
+        index={item.index}
+        columns={columns}
+        token={token}
+        playedFileId={
+          row.type === "cards" && row.itemKey === lastPlayed?.itemKey
+            ? lastPlayed.fileId
+            : null
+        }
+        scrollRef={scrollRef}
+        measure={virtualizer.measureElement}
+        onToggle={onToggleHeader}
+        onOpen={openFile}
+      />
+    );
+  };
   const renderPiece = (piece: RowPiece) =>
     piece.type === "row" ? (
       renderRow(piece.item)

src/app/(app)/components/library-video-dialog.tsx

@@ -1,7 +1,7 @@
 // 资源库视频网页播放弹窗
 "use client";
 
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import dynamic from "next/dynamic";
 import { DownloadIcon, MonitorPlayIcon } from "lucide-react";
 
@@ -15,6 +15,10 @@ import {
   DialogTitle
 } from "@/components/ui/dialog";
 import { Skeleton } from "@/components/ui/skeleton";
+import {
+  importVideoPlayer,
+  preloadVideoPlayer
+} from "@/components/video-player-loader";
 import { BROWSER_VIDEO_EXT } from "@/constants/torbox";
 import type { LibraryItemView } from "@/hooks/use-library";
 import { useOrigin } from "@/hooks/use-origin";
@@ -27,13 +31,10 @@ import { findLibraryItem, type LibraryFileTarget } from "./library-rows";
 const PLAYER_CLASS = "aspect-video max-h-[calc(100dvh-13rem)] w-full";
 
 /** 播放器较大，打开弹窗时才加载 */
-const VideoPlayer = dynamic(
-  () => import("@/components/video-player").then((mod) => mod.VideoPlayer),
-  {
-    ssr: false,
-    loading: () => <Skeleton className={PLAYER_CLASS} />
-  }
-);
+const VideoPlayer = dynamic(importVideoPlayer, {
+  ssr: false,
+  loading: () => <Skeleton className={PLAYER_CLASS} />
+});
 
 type LibraryVideoDialogProps = {
   items: LibraryItemView[];
@@ -72,6 +73,13 @@ export const LibraryVideoDialog = ({
       ? buildHlsUrl(origin, item.source, item.id, file.id, token)
       : null;
 
+  // 播放器与 HLS 引擎并行下载，不等播放器渲染出来再请求引擎
+  const ready = streamUrl !== null;
+  const needsHls = hlsUrl !== null;
+  useEffect(() => {
+    if (ready) preloadVideoPlayer(needsHls);
+  }, [ready, needsHls]);
+
   return (
     <Dialog
       open={target !== null && streamUrl !== null}

src/app/login/components/login-form.tsx

@@ -2,7 +2,6 @@
 "use client";
 
 import { useState } from "react";
-import { isAxiosError } from "axios";
 import { useAnimate } from "motion/react";
 import { EyeIcon, EyeOffIcon, KeyRoundIcon, LogInIcon } from "lucide-react";
 
@@ -31,12 +30,10 @@ import {
 import { Spinner } from "@/components/ui/spinner";
 import { SCRAMBLE, SHAKE } from "@/constants/motion";
 import { useLogin } from "@/hooks/use-auth";
+import { isUnauthorized } from "@/lib/axios";
 
 const FORM_ID = "login-form";
 
-const isUnauthorized = (error: unknown) =>
-  isAxiosError(error) && error.response?.status === 401;
-
 /** 表单只通过回调对外通知，不关心外部如何呈现（如背景点阵场） */
 type LoginFormProps = {
   /** 演示模式的访问密钥，传入时在输入框下方提示 */

src/components/video-player-loader.ts

@@ -0,0 +1,14 @@
+// 视频播放器的按需加载入口：播放器与 hls.js 引擎都是独立 chunk，这里统一加载并支持提前预热
+// 同一个 import() 只会请求一次 chunk，预热后 next/dynamic 直接命中缓存
+
+export const importVideoPlayer = () =>
+  import("@/components/video-player").then((mod) => mod.VideoPlayer);
+
+export const importHlsJsVideo = () =>
+  import("@videojs/react/media/hlsjs-video").then((mod) => mod.HlsJsVideo);
+
+/** 提前下载播放器 chunk；需要 HLS 时并行下载引擎，避免点开后串行等待 */
+export const preloadVideoPlayer = (hls: boolean) => {
+  void importVideoPlayer();
+  if (hls) void importHlsJsVideo();
+};

src/components/video-player.tsx

@@ -7,17 +7,14 @@ import { I18nProvider } from "@videojs/react";
 import zhCN from "@videojs/react/i18n/locales/zh-CN";
 import { Video, VideoPlayer as Player } from "@videojs/react/video";
 
+import { importHlsJsVideo } from "@/components/video-player-loader";
 import { VideoSkin } from "@/components/videojs/video/skin";
 
 /**
  * HLS 播放用 hls.js 引擎：Video.js 自带的 HlsVideo 不支持 MPEG-TS 分片。
  * hls.js 体积较大，只在播放 HLS 时加载。
  */
-const HlsJsVideo = dynamic(
-  () =>
-    import("@videojs/react/media/hlsjs-video").then((mod) => mod.HlsJsVideo),
-  { ssr: false }
-);
+const HlsJsVideo = dynamic(importHlsJsVideo, { ssr: false });
 
 type VideoPlayerProps = {
   src: string;

src/constants/motion.ts

@@ -140,3 +140,11 @@ export const RIPPLES = {
 } as const satisfies Record<string, RipplePreset>;
 
 export type RippleName = keyof typeof RIPPLES;
+
+/** 图片封面加载中：点阵被一道光带扫亮 */
+export const IMAGE_LOADING = {
+  /** 加载超过这个时间（秒）才出现，缓存命中时不闪一下 */
+  showDelay: 0.15,
+  fade: { duration: 0.3 },
+  sweep: { duration: 1.4, ease: "linear", repeat: Infinity, repeatDelay: 0.2 }
+} as const;

src/lib/axios.ts

@@ -29,4 +29,8 @@ BaseClientService.interceptors.response.use(
   }
 );
 
+/** 请求是否因登录态无效（401）失败 */
+export const isUnauthorized = (error: unknown) =>
+  axios.isAxiosError(error) && error.response?.status === 401;
+
 export default BaseClientService;