feat(ssr): 帖子页全量 SSR——作者卡/目录首帧服务端渲染，消除冗余首屏请求

- 帖子快照携带作者主页资料与统计（authorProfile/authorStats）， SSR 端与客户端预热均取 /api/users/:id；PostAuthorCard 首帧直接渲染，不再挂载后请求，统计数字不再显示 — 占位 - MainLayout 首帧从已 seed 的帖子快照派生右栏 outline（作者卡+文章目录），修复 outline 仅靠 effect 上报导致 SSR 不渲染右栏的问题 - 壳层首屏请求门控：useAuth 有种子跳过 /api/me、branding 缓存命中不重拉、侧栏三个区块首屏用 seed 缓存、未读数首屏跳过即时请求（轮询/事件刷新保留） - serverDom(linkedom) 修复：DOMParser 片段包裹、属性顺序、SVG 自闭合展开 - 验证：首页与帖子页 hydration 后仅剩 pageview 上报，0 hydration 错误
2026-09-10 05:04:31 +08:00
parent 2392768868
commit 3c6d8cb891
13 changed files with 322 additions and 87 deletions
--- a/frontend/renderer/+onRenderHtml.tsx
+++ b/frontend/renderer/+onRenderHtml.tsx
@@ -36,10 +36,10 @@ async function onRenderHtml(pageContext: PageContextServer) {
  let pageHtml = '';
  if (Page) {
    // SSR feed 页：per-request 作用域 + hydrate 同构变体；渲染失败降级空壳（客户端自行接管），不 500
-    const scope = createRequestScope(createHomeStore());
-    scope.hydrating = true;
    const { pathname, searchOriginal } = pageContext.urlParsed;
    const url = pathname + (searchOriginal ?? '');
+    const scope = createRequestScope(createHomeStore(), url);
+    scope.hydrating = true;
    try {
      pageHtml = await runWithScope(scope, async () => {
        // 渲染前把 +data 取回的数据 seed 进请求作用域（缓存层按 scope 隔离）
--- a/frontend/src/components/PostAuthorCard.tsx
+++ b/frontend/src/components/PostAuthorCard.tsx
@@ -15,6 +15,9 @@ interface Props {
  author?: User | null;
  publishedAt?: string;
  viewCount?: number;
+  /** SSR/预热快照携带的作者主页资料与统计：首帧直接渲染，避免挂载后再拉 /api/users/:id */
+  initialProfile?: UserPublic | null;
+  initialStats?: UserActivityStats | null;
 }

 /** 帖子详情右栏：作者信息卡（私信 / 主页 / 统计） */
@@ -22,11 +25,13 @@ export default function PostAuthorCard({
  author,
  publishedAt,
  viewCount,
+  initialProfile = null,
+  initialStats = null,
 }: Props) {
  const nav = useNavigate();
  const { user: me } = useAuth();
-  const [profile, setProfile] = useState<UserPublic | null>(null);
-  const [stats, setStats] = useState<UserActivityStats | null>(null);
+  const [profile, setProfile] = useState<UserPublic | null>(initialProfile);
+  const [stats, setStats] = useState<UserActivityStats | null>(initialStats);

  useEffect(() => {
    if (!author?.id) {
@@ -34,6 +39,12 @@ export default function PostAuthorCard({
      setStats(null);
      return;
    }
+    // 快照（SSR / 客户端预热 / 换帖）已带完整资料：同步即可，不再发请求
+    if (initialProfile && initialStats) {
+      setProfile(initialProfile);
+      setStats(initialStats);
+      return;
+    }
    let cancelled = false;
    api.userProfile(author.id)
      .then((r) => {
@@ -48,7 +59,7 @@ export default function PostAuthorCard({
        setStats(null);
      });
    return () => { cancelled = true; };
-  }, [author?.id]);
+  }, [author?.id, initialProfile, initialStats]);

  if (!author?.id) {
    return (
--- a/frontend/src/components/RightPanel.tsx
+++ b/frontend/src/components/RightPanel.tsx
@@ -1,7 +1,7 @@
 import { useMemo } from 'react';
 import { ListTree, MessageCircle, Tags, Link2, UserPlus } from 'lucide-react';
 import { useLocation, useSearchParams, useNavigate } from 'react-router';
-import type { AsideWidget, RecentComment, RecentUser, TagCount, User, ForumStats, FriendLink } from '../api/types';
+import type { AsideWidget, RecentComment, RecentUser, TagCount, User, UserActivityStats, UserPublic, ForumStats, FriendLink } from '../api/types';
 import type { PostHeading } from '../utils/postHeadings';
 import { useSiteBranding } from '../hooks/useSiteBranding';
 import { formatShortDateTime, formatTime } from '../utils/content';
@@ -20,6 +20,9 @@ export type PostDetailAside = {
  headings: PostHeading[];
  scrollRoot?: HTMLElement | null;
  outlineTitle?: string;
+  /** SSR/预热快照携带的作者主页资料与统计（首帧直接渲染，缺省卡片自行拉取） */
+  authorProfile?: UserPublic | null;
+  authorStats?: UserActivityStats | null;
 };

 interface Props {
@@ -237,6 +240,8 @@ export default function RightPanel({
              author={postDetail.author}
              publishedAt={postDetail.publishedAt}
              viewCount={postDetail.viewCount}
+              initialProfile={postDetail.authorProfile ?? null}
+              initialStats={postDetail.authorStats ?? null}
            />
          ) : null}
          <div className="widget-card widget-card--outline">
--- a/frontend/src/hooks/useAuth.tsx
+++ b/frontend/src/hooks/useAuth.tsx
@@ -36,9 +36,13 @@ export function AuthProvider({ children }: { children: ReactNode }) {
    }
  }, []);

-  // 有 SSR 种子时仍后台校验；无种子则首屏拉取
+  // SSR +data / 冷启动预热已注入登录态种子（含已确认访客 null）时首屏不重复请求；
+  // 无种子（纯 SPA 且未预热）才首屏拉取。登录/退出均显式更新状态，不依赖 mount 校验。
  // 不清空 auth 种子：StrictMode 重挂会再次跑 useState initializer，破坏性 clear 会导致 user 空窗闪动
-  useEffect(() => { void refresh(); }, [refresh]);
+  useEffect(() => {
+    if (peekAuthSeed().hasSeed) return;
+    void refresh();
+  }, [refresh]);

  const prevUserId = useRef<number | null | 'init'>('init');
  useEffect(() => {
--- a/frontend/src/hooks/useSiteBranding.ts
+++ b/frontend/src/hooks/useSiteBranding.ts
@@ -61,8 +61,10 @@ function fetchBranding(): Promise<SiteBranding> {
    preferCacheOnce = false;
    return Promise.resolve(cached);
  }
+  // SSR +data / 冷启动预热已 seed 品牌配置时首屏直接复用，不重复请求；
+  // 最新配置同步由显式刷新（refetchSiteBranding / ensureSiteBrandingLoaded force）触发
+  if (cached) return Promise.resolve(cached);
  if (inflight) return inflight;
-  // 有 boot/缓存时首屏已可用；仍请求 API 以同步最新配置
  inflight = api.siteBranding()
    .then(b => {
      cached = { ...DEFAULT_BRANDING, ...b };
@@ -137,6 +139,7 @@ export function useSiteBranding() {

 /** 保留当前画面，后台重拉品牌配置（下拉刷新等） */
 export function refetchSiteBranding() {
+  cached = null;
  inflight = null;
  cacheEpoch += 1;
  listeners.forEach(fn => fn());
@@ -146,6 +149,7 @@ export function refetchSiteBranding() {
 export async function ensureSiteBrandingLoaded(opts?: { force?: boolean }): Promise<SiteBranding> {
  if (!opts?.force && cached) return cached;
  if (opts?.force) {
+    cached = null;
    inflight = null;
    preferCacheOnce = false;
  }
--- a/frontend/src/layouts/MainLayout.tsx
+++ b/frontend/src/layouts/MainLayout.tsx
@@ -12,13 +12,16 @@ import { useAuth } from '../hooks/useAuth';
 import { useTheme, useMediaQuery } from '../hooks/useTheme';
 import { useOverlayA11y, moveTabIndex } from '../hooks/useOverlayA11y';
 import { api } from '../api/client';
-import type { Board, RecentComment, RecentUser, ForumStats, TagCount, User } from '../api/types';
-import type { PostHeading } from '../utils/postHeadings';
+import type { Board, RecentComment, RecentUser, ForumStats, TagCount, User, UserActivityStats, UserPublic } from '../api/types';
+import { extractHeadingsFromHtml, type PostHeading } from '../utils/postHeadings';
+import { renderPostContentHtml } from '../utils/postContent';
+import { getSessionSnapshot } from '../utils/sessionPageCache';
+import { postDetailCacheKey, type PostDetailSnapshot } from '../utils/homeBoot';
 import { getCachedBoards, getCachedStats, getCachedRecentComments, getCachedRecentUsers, getCachedTags, hasCachedAside, setCachedBoards, setCachedStats, setCachedRecentComments, setCachedRecentUsers, setCachedTags } from '../utils/layoutCache';
 import Sidebar, { isNeutralSidebarRoute } from '../components/Sidebar';
 import RightPanel from '../components/RightPanel';
 import BackToTop from '../components/BackToTop';
-import { useForumLimits } from '../hooks/useForumLimits';
+import { getCachedForumLimits, useForumLimits } from '../hooks/useForumLimits';
 import { resolveAsideWidgets } from '../utils/asideWidgets';
 import { buildHomeUrl, parseFeedSort } from '../components/FeedSortBar';
 import { navigateFeed, PAGE_FORCE_REFRESH_EVENT } from '../utils/feedCache';
@@ -44,7 +47,7 @@ import { userPath } from '../utils/userPath';
 import { parsePermalinkID } from '../utils/permalink';
 import { ensureSitePagesLoaded } from '../hooks/useSitePages';
 import { endHomeHydrate, isHomeHydrating } from '../utils/homeHydrate';
-import { getBootUnread } from '../utils/authBoot';
+import { getBootUnread, peekAuthSeed } from '../utils/authBoot';

 export default function MainLayout() {
  const { user, loading: authLoading, logout } = useAuth();
@@ -73,14 +76,33 @@ export default function MainLayout() {
  const [notifyUnread, setNotifyUnread] = useState(0);
  const [tags, setTags] = useState<TagCount[]>(() => getCachedTags());
  const [tagsLoading, setTagsLoading] = useState(() => getCachedTags().length === 0);
-  const [postOutline, setPostOutline] = useState<{
-    headings: PostHeading[];
-    scrollRoot: HTMLElement | null;
-    title?: string;
-    author?: User | null;
-    publishedAt?: string;
-    viewCount?: number;
-  } | null>(null);
+  // SSR / hydrate 首帧：详情页快照已在渲染前 seed（onRenderHtml / onRenderClient），
+  // 直接从中派生右栏作者与目录——子组件的 setPostOutline 在 effect 中，SSR 不执行，
+  // 不走这一步作者卡/目录会整体退化为客户端挂载。首帧后的 SPA 导航仍由 effect 上报。
+  const [postOutline, setPostOutline] = useState<PostOutlineState>(() => {
+    const m = loc.pathname.match(/^\/post\/(\d+)/);
+    if (!m || /\/edit$/.test(loc.pathname)) return null;
+    const id = Number(m[1]);
+    if (!id) return null;
+    const snap = getSessionSnapshot<PostDetailSnapshot>(postDetailCacheKey(id));
+    if (!snap?.post) return null;
+    const content = snap.post.content ?? '';
+    const rendered = content.trim()
+      ? renderPostContentHtml(content, !!user, {
+          openLinksInNewTab: getCachedForumLimits()?.open_content_links_in_new_tab,
+        })
+      : '';
+    return {
+      headings: extractHeadingsFromHtml(rendered),
+      scrollRoot: null,
+      title: '文章目录',
+      author: snap.post.user ?? null,
+      publishedAt: snap.post.created_at,
+      viewCount: snap.post.view_count,
+      authorProfile: snap.authorProfile ?? null,
+      authorStats: snap.authorStats ?? null,
+    };
+  });
  const [asideOpen, setAsideOpen] = useState(false);
  const [sidebarOpen, setSidebarOpen] = useState(false);
  const [searchPanelOpen, setSearchPanelOpen] = useState(false);
@@ -335,8 +357,15 @@ export default function MainLayout() {
    void transitionTo(nav, path);
  }, [nav, notifyUnread, dmUnread]);

+  // 仅首屏跳过一次：SSR/冷启动种子已带未读数（state 从 getBootUnread 初始化），不重复请求；
+  // 之后 user 变化（登录/退出）、事件刷新与 60s 轮询照常
+  const unreadImmediateSkipped = useRef(false);
  useEffect(() => {
+    if (!unreadImmediateSkipped.current && peekAuthSeed().hasSeed) {
+      unreadImmediateSkipped.current = true;
+    } else {
      refreshUnreadMessages();
+    }
    const onRefresh = () => refreshUnreadMessages();
    window.addEventListener('messages-unread-refresh', onRefresh);
    const timer = window.setInterval(refreshUnreadMessages, 60_000);
@@ -387,6 +416,13 @@ export default function MainLayout() {
  // 标签云：进页/离开发帖页时拉取；不跟 posts-refresh 联动（置顶/推荐等不改标签）
  useEffect(() => {
    if (isCompose || !showTagCloud) return;
+    // SSR +data / 冷启动预热已 seed 侧栏数据（含空数组）时首屏直接复用，不重复请求；
+    // 下拉强制刷新（layoutRefreshTick 递增）时仍重拉最新
+    if (layoutRefreshTick === 0 && hasCachedAside()) {
+      setTags(getCachedTags());
+      setTagsLoading(false);
+      return;
+    }
    let cancelled = false;
    // 有 session 缓存则静默刷新（软刷新不卸空白）
    if (getCachedTags().length === 0) setTagsLoading(true);
@@ -407,6 +443,14 @@ export default function MainLayout() {
  const needRecentComments = needAsideData && showRecentComments;
  useEffect(() => {
    if (!needRecentComments) return;
+    // SSR +data / 冷启动预热已 seed：首屏同步缓存进 state，不重复请求；
+    // 下拉强制刷新（layoutRefreshTick 递增）时仍重拉最新
+    if (layoutRefreshTick === 0 && hasCachedAside()) {
+      setRecentComments(getCachedRecentComments());
+      asideEverLoaded.current = true;
+      setAsideLoading(false);
+      return;
+    }
    let cancelled = false;
    // 无缓存时才显示加载态，有缓存则静默刷新，避免抽屉高度跳动
    if (!asideEverLoaded.current && !hasCachedAside()) {
@@ -433,6 +477,12 @@ export default function MainLayout() {
  const needRecentUsers = needAsideData && showRecentUsers;
  useEffect(() => {
    if (!needRecentUsers) return;
+    if (layoutRefreshTick === 0 && hasCachedAside()) {
+      setRecentUsers(getCachedRecentUsers());
+      asideEverLoaded.current = true;
+      setAsideLoading(false);
+      return;
+    }
    let cancelled = false;
    if (!asideEverLoaded.current && !hasCachedAside()) {
      setAsideLoading(true);
@@ -503,14 +553,7 @@ export default function MainLayout() {
  const isArticleAside = isPostDetail || isSitePage;
  // 帖子有作者 →「作者与目录」；单页仅目录
  const articleAsideLabel = isPostDetail ? '作者与目录' : '文章目录';
-  const setPostOutlineSafe = useCallback((outline: {
-    headings: PostHeading[];
-    scrollRoot: HTMLElement | null;
-    title?: string;
-    author?: User | null;
-    publishedAt?: string;
-    viewCount?: number;
-  } | null) => {
+  const setPostOutlineSafe = useCallback((outline: PostOutlineState) => {
    setPostOutline(outline);
  }, []);
  const layoutCtx = useMemo<LayoutCtx>(() => ({
@@ -848,6 +891,8 @@ export default function MainLayout() {
              headings: postOutline?.headings ?? [],
              scrollRoot: postOutline?.scrollRoot ?? null,
              outlineTitle: postOutline?.title,
+              authorProfile: postOutline?.authorProfile ?? null,
+              authorStats: postOutline?.authorStats ?? null,
            } : null}
          />
          )}
@@ -967,6 +1012,8 @@ export default function MainLayout() {
                  headings: postOutline?.headings ?? [],
                  scrollRoot: postOutline?.scrollRoot ?? null,
                  outlineTitle: postOutline?.title,
+                  authorProfile: postOutline?.authorProfile ?? null,
+                  authorStats: postOutline?.authorStats ?? null,
                } : null}
              />
            </div>
@@ -979,6 +1026,19 @@ export default function MainLayout() {
  );
 }

+/** 详情页/单页上报到右栏的文章目录与作者信息 */
+export type PostOutlineState = {
+  headings: PostHeading[];
+  scrollRoot: HTMLElement | null;
+  title?: string;
+  author?: User | null;
+  publishedAt?: string;
+  viewCount?: number;
+  /** SSR/预热快照携带的作者主页资料与统计（作者卡首帧直接渲染，缺省由卡片自行拉取） */
+  authorProfile?: UserPublic | null;
+  authorStats?: UserActivityStats | null;
+} | null;
+
 export type LayoutCtx = {
  boardId: number;
  keyword: string;
@@ -989,12 +1049,5 @@ export type LayoutCtx = {
  refreshBoards: () => void;
  isMobile: boolean;
  /** 详情页上报作者与目录，供右侧栏展示 */
-  setPostOutline: (outline: {
-    headings: PostHeading[];
-    scrollRoot: HTMLElement | null;
-    title?: string;
-    author?: User | null;
-    publishedAt?: string;
-    viewCount?: number;
-  } | null) => void;
+  setPostOutline: (outline: PostOutlineState) => void;
 };
--- a/frontend/src/pages/PostDetailPage.tsx
+++ b/frontend/src/pages/PostDetailPage.tsx
@@ -33,7 +33,7 @@ import {
 } from '@/components/ui/dialog';
 import { notify } from '@/lib/notify';
 import { api } from '../api/client';
-import type { PostItem, Comment, ReportReason, PollView, PostLotteryView } from '../api/types';
+import type { PostItem, Comment, PollView, PostLotteryView, ReportReason } from '../api/types';
 import { REPORT_REASON_OPTIONS } from '../utils/report';
 import CommentThreadList from '../components/CommentThreadList';
 import CommentBox, { type CommentSubmitData } from '../components/CommentBox';
@@ -48,7 +48,7 @@ import ArticleOutline from '../components/ArticleOutline';
 import { useAuth } from '../hooks/useAuth';
 import { joinSEOKeywords, usePageSEO } from '../hooks/usePageSEO';
 import { getCachedSiteBranding } from '../hooks/useSiteBranding';
-import { formatDateTime, isTimeDiffSignificant } from '../utils/content';
+import { formatDateTime } from '../utils/content';
 import { collectCommentSubtreeIds } from '../utils/comment';
 import { loadMyCommentIds } from '../utils/guest';
 import { clearAllFeedCache, PAGE_FORCE_REFRESH_EVENT } from '../utils/feedCache';
@@ -56,6 +56,7 @@ import { PAGE_SOFT_REFRESH_COMMIT_EVENT } from '../utils/softRefresh';
 import { deleteSessionSnapshot, getSessionSnapshot, setSessionSnapshot } from '../utils/sessionPageCache';
 import { loginPath } from '../utils/authRedirect';
 import { excerptFromHTML, firstImageFromHTML } from '../utils/seoText';
+import { buildPostDetailSnapshot, postDetailCacheKey, type PostDetailSnapshot } from '../utils/homeBoot';
 import { canonicalRedirectPath, parsePermalinkID, postPath } from '../utils/permalink';
 import { useForumLimits } from '../hooks/useForumLimits';
 import type { LayoutCtx } from '../layouts/MainLayout';
@@ -64,26 +65,6 @@ import { renderPostContentHtml } from '../utils/postContent';
 import { InFlowSiteFooter } from '../components/SiteFooter';
 import NotFoundPage from './NotFoundPage';

-type PostDetailSnapshot = {
-  post: PostItem;
-  comments: Comment[];
-  poll: PollView | null;
-  lottery: PostLotteryView | null;
-  liked: boolean;
-  favorited: boolean;
-  canEdit: boolean;
-  isEdited: boolean;
-  editBlockReason: string;
-  editWindowHours: number;
-  bountyCanRefund: boolean;
-  bountyRefundBlockReason: string;
-  bountyEligibleReplyCount: number;
-};
-
-function postDetailCacheKey(id: number) {
-  return `post:${id}`;
-}
-
 /** 格式化剩余可编辑时间 */
 function formatEditRemaining(createdAt: string, windowHours: number): string {
  if (windowHours <= 0) return '';
@@ -143,6 +124,8 @@ export default function PostDetailPage() {
  const [bountyCanRefund, setBountyCanRefund] = useState(initialSnap?.bountyCanRefund ?? true);
  const [bountyRefundBlockReason, setBountyRefundBlockReason] = useState(initialSnap?.bountyRefundBlockReason ?? '');
  const [bountyEligibleReplyCount, setBountyEligibleReplyCount] = useState(initialSnap?.bountyEligibleReplyCount ?? 0);
+  const [authorProfile, setAuthorProfile] = useState<PostDetailSnapshot['authorProfile']>(initialSnap?.authorProfile ?? null);
+  const [authorStats, setAuthorStats] = useState<PostDetailSnapshot['authorStats']>(initialSnap?.authorStats ?? null);

  const commentSectionRef = useRef<HTMLDivElement>(null);
  const commentBoxRef = useRef<HTMLDivElement>(null);
@@ -206,9 +189,11 @@ export default function PostDetailPage() {
      author: post.user ?? null,
      publishedAt: post.created_at,
      viewCount: post.view_count,
+      authorProfile,
+      authorStats,
    });
    return () => setPostOutline(null);
-  }, [headings, loading, post, setPostOutline]);
+  }, [headings, loading, post, authorProfile, authorStats, setPostOutline]);

  const loadSeq = useRef(0);
  const detailPath = postPath(postId, limits);
@@ -226,6 +211,8 @@ export default function PostDetailPage() {
    setBountyCanRefund(snap.bountyCanRefund);
    setBountyRefundBlockReason(snap.bountyRefundBlockReason);
    setBountyEligibleReplyCount(snap.bountyEligibleReplyCount);
+    setAuthorProfile(snap.authorProfile ?? null);
+    setAuthorStats(snap.authorStats ?? null);
    setComments(snap.comments);
    // POP（后退/前进）不干预，交给浏览器原生恢复；
    // PUSH 换帖 / 强制刷新是「换新内容」场景，文档滚动置顶
@@ -273,21 +260,11 @@ export default function PostDetailPage() {
        ]);
        if (seq !== loadSeq.current) return;
        const commentsList = Array.isArray(comm.comments) ? comm.comments : [];
-        const snap: PostDetailSnapshot = {
-          post: detail.post,
-          comments: commentsList,
-          poll: detail.poll ?? null,
-          lottery: detail.lottery ?? null,
-          liked: detail.liked,
-          favorited: detail.favorited,
-          canEdit: detail.can_edit ?? false,
-          isEdited: detail.is_edited ?? isTimeDiffSignificant(detail.post.created_at, detail.post.updated_at ?? detail.post.created_at),
-          editBlockReason: detail.edit_block_reason ?? '',
-          editWindowHours: detail.post_edit_window_hours ?? 0,
-          bountyCanRefund: detail.bounty_can_refund ?? true,
-          bountyRefundBlockReason: detail.bounty_refund_block_reason ?? '',
-          bountyEligibleReplyCount: detail.bounty_eligible_reply_count ?? 0,
-        };
+        // 作者主页资料一并拉取（右栏作者卡首帧完整；失败降级为卡片自行拉取）
+        const authorResp = detail.post.user_id
+          ? await api.userProfile(detail.post.user_id).catch(() => null)
+          : null;
+        const snap = buildPostDetailSnapshot(detail, commentsList, authorResp);
        setSessionSnapshot(postDetailCacheKey(postId), snap);
        applySnapshot(snap, { restoreScroll: false });
        void refresh();
@@ -335,11 +312,14 @@ export default function PostDetailPage() {
      bountyCanRefund,
      bountyRefundBlockReason,
      bountyEligibleReplyCount,
+      authorProfile,
+      authorStats,
+      scrollTop: 0,
    });
  }, [
    post, comments, poll, lottery, liked, favorited, canEdit, isEdited,
    editBlockReason, editWindowHours, bountyCanRefund, bountyRefundBlockReason,
-    bountyEligibleReplyCount, postId, loading,
+    bountyEligibleReplyCount, authorProfile, authorStats, postId, loading,
  ]);

  const reloadComments = useCallback(async () => {
--- a/frontend/src/ssr/feedData.ts
+++ b/frontend/src/ssr/feedData.ts
@@ -10,7 +10,7 @@
 import { redirect, render } from 'vike/abort';
 import type { PageContextServer } from 'vike/types';
 import { serverApi } from '../api/serverClient';
-import type { Comment, PostDetailResponse } from '../api/types';
+import type { Comment, PostDetailResponse, UserActivityStats, UserPublic } from '../api/types';
 import type { HomeBootPayload } from '../utils/homeBoot';
 import { buildPostDetailSnapshot } from '../utils/homeBoot';
 import { matchFeedSsrPath } from './feedPaths';
@@ -70,8 +70,14 @@ async function loadPostData(id: string, pathname: string, api: ApiCtx): Promise<
    });
  }

+  // 作者主页资料（右栏作者卡首帧 SSR；失败降级为卡片自行拉取，不阻断渲染）
+  const authorId = detail.post.user_id;
+  const authorResp = authorId
+    ? await serverApi<{ user: UserPublic; stats: UserActivityStats }>(`/api/users/${authorId}`, api)
+    : null;
+
  const comments = Array.isArray(commentsResp?.comments) ? commentsResp.comments : [];
-  const snapshot = buildPostDetailSnapshot(detail, comments);
+  const snapshot = buildPostDetailSnapshot(detail, comments, authorResp);
  const head = buildPostHead(detail.post, brand, boot?.limits ?? null, base);
  return { kind: 'post', boot: boot ?? undefined, snapshot, head };
 }
--- a/frontend/src/ssr/scopeTypes.ts
+++ b/frontend/src/ssr/scopeTypes.ts
@@ -10,6 +10,8 @@ import type { User, SiteBranding, ForumLimitsPublic, SitePageSummary } from '../
 import type { HomeStoreState } from '../store/homeStore';

 export type RequestScope = {
+  /** 本请求的路径 + 查询串（不含 hash，服务端不可见），供双端共享模块读取「当前 URL」 */
+  url: string;
  /** layoutCache / sessionPageCache 等统一 KV（键与 sessionStorage 键一致） */
  kv: Map<string, unknown>;
  /** 本请求独立的 feed store（zustand 实例） */
@@ -24,8 +26,9 @@ export type RequestScope = {
  hydrating: boolean;
 };

-export function createRequestScope(homeStore: HomeStoreState): RequestScope {
+export function createRequestScope(homeStore: HomeStoreState, url: string): RequestScope {
  return {
+    url,
    kv: new Map(),
    homeStore,
    auth: { hasSeed: false, user: null, unread: 0 },
--- a/frontend/src/ssr/serverDom.ts
+++ b/frontend/src/ssr/serverDom.ts
@@ -10,8 +10,106 @@
 *
 * DOMPurify 在无 window 环境 isSupported=false，sanitize 原样返回——
 * SSR 内容均来自 Go API（服务端已消毒），跳过浏览器端二次消毒是安全的。
+ *
+ * 注意 1：linkedom 的 DOMParser 解析「片段 HTML」时不会构造 <html>/<body>，
+ * 首枚元素会被当作 documentElement、其余内容挂在文档根上，doc.body 恒为空；
+ * 而内容处理工具统一读 doc.body / 在文档内 querySelectorAll，SSR 会渲染出空正文。
+ * ServerDOMParser 统一把片段包成完整文档，行为与浏览器 DOMParser 对齐。
+ *
+ * 注意 2：linkedom 对运行时「新增」的属性采用头插（setAttribute 新属性、
+ * classList.add 首次创建 class 时插到属性列表最前），浏览器是尾插；
+ * 而解析得到的属性两端都按源码顺序、已存在属性原地改值，行为一致。
+ * 属性顺序差异会使 dangerouslySetInnerHTML 的 SSR/客户端字符串不一致，
+ * 触发 hydration mismatch（#418/#425）。这里在两个新增入口记录属性的调用
+ * 顺序，并在 innerHTML/outerHTML 序列化读取前把「后加的属性」移回尾部，
+ * 使 linkedom 序列化结果与浏览器逐属性一致（重排幂等，可安全多次读取）。
+ *
+ * 注意 3：linkedom 序列化时对无子节点的 SVG/MathML 外发内容元素输出
+ * 自闭合（<path …/>），而浏览器的 HTML 片段序列化一律输出显式闭合
+ * （<path …></path>，仅 img/br 等 HTML void 元素省略尾标签）。序列化后
+ * 把这类自闭合展开为显式闭合（文本节点已转义，裸 <tag/> 只可能是真实标签）。
+ * 已知限制：linkedom 解析 HTML 时外发内容标签名也会被小写化（linearGradient
+ * → lineargradient）；门控图标与现有数据仅使用全小写 SVG 标签，暂不处理。
 */
-import { DOMParser as LinkedomDOMParser, HTMLElement as LinkedomHTMLElement, NodeFilter as LinkedomNodeFilter } from 'linkedom';
+import {
+  DOMParser as LinkedomDOMParser,
+  Element as LinkedomElement,
+  HTMLElement as LinkedomHTMLElement,
+  NodeFilter as LinkedomNodeFilter,
+} from 'linkedom';
+
+class ServerDOMParser {
+  parseFromString(markup: string, mimeType: string = 'text/html'): Document {
+    if (mimeType === 'text/html' && typeof markup === 'string' && !/<html[\s>]/i.test(markup)) {
+      markup = `<!DOCTYPE html><html><head></head><body>${markup}</body></html>`;
+    }
+    return new LinkedomDOMParser().parseFromString(markup, mimeType as 'text/html') as unknown as Document;
+  }
+}
+
+/** 元素上记录「运行时新增」属性名的 expando 键（按调用顺序） */
+const ADDED_ATTRS = Symbol('ssrAddedAttrs');
+/** 重排期间抑制记录，避免 remove + setAttribute 重写产生重复登记 */
+let reordering = false;
+
+function recordAddedAttribute(el: Element, name: string): void {
+  const store = el as unknown as Record<symbol, string[] | undefined>;
+  const list = store[ADDED_ATTRS];
+  if (list) {
+    if (!list.includes(name)) list.push(name);
+  } else {
+    store[ADDED_ATTRS] = [name];
+  }
+}
+
+/**
+ * 序列化前归一化属性顺序：解析属性（源码顺序）在前、运行时新增属性按调用
+ * 顺序在后——与浏览器尾插语义一致。linkedom 头插，重写时按期望顺序逆序写入。
+ */
+function normalizeAttributeOrder(root: Element): void {
+  const elements: Element[] = [root, ...Array.from(root.querySelectorAll('*'))];
+  for (const el of elements) {
+    const store = el as unknown as Record<symbol, string[] | undefined>;
+    const added = store[ADDED_ATTRS];
+    if (!added || added.length === 0) continue;
+    const current = el.getAttributeNames();
+    if (current.length === 0) continue;
+
+    const addedSet = new Set(added);
+    const kept = current.filter(n => !addedSet.has(n));
+    const presentAdded = added.filter(n => current.includes(n));
+    const desired = [...kept, ...presentAdded];
+    if (desired.length === current.length && desired.every((n, i) => n === current[i])) {
+      continue; // 已是浏览器顺序（首次或重复读取）
+    }
+
+    const values = new Map(current.map(n => [n, el.getAttribute(n) ?? '']));
+    reordering = true;
+    try {
+      for (const n of current) el.removeAttribute(n);
+      for (let i = desired.length - 1; i >= 0; i--) {
+        el.setAttribute(desired[i], values.get(desired[i]) ?? '');
+      }
+    } finally {
+      reordering = false;
+    }
+  }
+}
+
+/**
+ * linkedom 对无子节点的外发内容（SVG/MathML）元素序列化为自闭合 <tag …/>，
+ * 浏览器的 HTML 片段序列化一律输出显式闭合 <tag …></tag>。读取 innerHTML/
+ * outerHTML 后展开（文本节点中 < 已转义为 &lt;，裸 <tag/> 只可能是真实标签）。
+ */
+const FOREIGN_SELF_CLOSE = /<([a-zA-Z][\w:-]*)((?:\s[^<>"']*(?:"[^"]*"|'[^']*')[^<>"']*)*)?\s*\/>/g;
+
+function expandForeignSelfClose(html: string): string {
+  return html.replace(
+    FOREIGN_SELF_CLOSE,
+    (_match, name: string, attrs: string | undefined) =>
+      `<${name}${(attrs ?? '').replace(/\s+$/, '')}></${name}>`,
+  );
+}

 let installed = false;

@@ -20,14 +118,65 @@ export function installServerDom(): void {
  installed = true;

  const g = globalThis as unknown as Record<string, unknown>;
-  const parser = new LinkedomDOMParser();
-  const doc = parser.parseFromString('...', 'text/html');
+  const parser = new ServerDOMParser();
+  const doc = parser.parseFromString('<!DOCTYPE html><html><head></head><body></body></html>', 'text/html');

-  g.DOMParser ??= LinkedomDOMParser;
+  g.DOMParser ??= ServerDOMParser;
  g.NodeFilter ??= LinkedomNodeFilter;
  g.HTMLElement ??= LinkedomHTMLElement;
  // linkedom HTML 元素（含 unknown/custom 元素）统一继承 HTMLElement，
  // 可同时充当 instanceof Element / instanceof HTMLElement 的判定目标
  g.Element ??= LinkedomHTMLElement;
  g.document ??= doc;
+
+  installAttributeOrderPatch(doc);
+}
+
+/**
+ * 补丁 linkedom 属性插入顺序（仅原型方法，安装一次即对所有解析文档生效）。
+ */
+function installAttributeOrderPatch(doc: Document): void {
+  const elementProto = LinkedomElement.prototype as unknown as {
+    setAttribute(name: string, value: string): void;
+  };
+
+  // 1) setAttribute：新增属性登记调用顺序（已存在属性 linkedom/浏览器均原地改值）
+  const origSetAttribute = elementProto.setAttribute;
+  elementProto.setAttribute = function (this: Element, name: string, value: string): void {
+    if (!reordering && !this.hasAttribute(name)) recordAddedAttribute(this, name);
+    origSetAttribute.call(this, name, value);
+  };
+
+  // 2) DOMTokenList.add：class 属性的首次创建由此进入（className setter 也走 classList.add）
+  const probeEl = doc.createElement('div');
+  const tokenList = probeEl.classList as unknown as Record<symbol, unknown>;
+  const tokenProto = Object.getPrototypeOf(probeEl.classList) as {
+    add(this: unknown, ...tokens: string[]): void;
+  };
+  const ownerSymbol = Object.getOwnPropertySymbols(tokenList).find(
+    s => tokenList[s] === probeEl,
+  );
+  const origTokenAdd = tokenProto.add;
+  tokenProto.add = function (this: Record<symbol, Element | undefined>, ...tokens: string[]): void {
+    const owner = ownerSymbol ? this[ownerSymbol] : undefined;
+    if (!reordering && owner && !owner.hasAttribute('class')) recordAddedAttribute(owner, 'class');
+    origTokenAdd.apply(this, tokens);
+  };
+
+  // 3) innerHTML / outerHTML 读取（序列化）前，把属性顺序归一为浏览器顺序
+  const protoForDescriptors = LinkedomElement.prototype as unknown as Record<string, unknown>;
+  (['innerHTML', 'outerHTML'] as const).forEach(key => {
+    const desc = Object.getOwnPropertyDescriptor(protoForDescriptors, key);
+    if (!desc?.get) return;
+    const origGet = desc.get as (this: Element) => string;
+    Object.defineProperty(protoForDescriptors, key, {
+      configurable: true,
+      enumerable: desc.enumerable,
+      get(this: Element) {
+        normalizeAttributeOrder(this);
+        return expandForeignSelfClose(origGet.call(this));
+      },
+      set: desc.set as ((this: Element, html: string) => void) | undefined,
+    });
+  });
 }
--- a/frontend/src/utils/authRedirect.ts
+++ b/frontend/src/utils/authRedirect.ts
@@ -1,3 +1,5 @@
+import { getScope } from '../ssr/scope';
+
 /** 构造带回跳的登录路径 */
 export function loginPath(from?: string): string {
  const path = sanitizeReturnPath(from ?? currentPath());
@@ -36,7 +38,10 @@ export function navigateAfterAuth(
 }

 function currentPath(): string {
-  if (typeof window === 'undefined') return '/';
+  if (typeof window === 'undefined') {
+    // SSR：hash 不随请求上送，取请求作用域中的 pathname + search
+    return getScope()?.url ?? '/';
+  }
  return `${window.location.pathname}${window.location.search}${window.location.hash}`;
 }

--- a/frontend/src/utils/homeBoot.ts
+++ b/frontend/src/utils/homeBoot.ts
@@ -15,6 +15,8 @@ import type {
  SitePageSummary,
  TagCount,
  User,
+  UserActivityStats,
+  UserPublic,
 } from '../api/types';
 import { seedSiteBrandingCache } from '../hooks/useSiteBranding';
 import { seedForumLimitsCache } from '../hooks/useForumLimits';
@@ -117,6 +119,9 @@ export type PostDetailSnapshot = {
  bountyCanRefund: boolean;
  bountyRefundBlockReason: string;
  bountyEligibleReplyCount: number;
+  /** 作者主页资料（右栏作者卡 SSR/预热首帧直接渲染，缺省由卡片自行拉取） */
+  authorProfile: UserPublic | null;
+  authorStats: UserActivityStats | null;
  scrollTop: number;
 };

@@ -125,7 +130,11 @@ export function postDetailCacheKey(id: number): string {
 }

 /** 由帖子详情 API 响应构建会话快照（客户端 prefetch 与服务端 +data 共用） */
-export function buildPostDetailSnapshot(detail: PostDetailResponse, comments: Comment[]): PostDetailSnapshot {
+export function buildPostDetailSnapshot(
+  detail: PostDetailResponse,
+  comments: Comment[],
+  author?: { user: UserPublic; stats?: UserActivityStats | null } | null,
+): PostDetailSnapshot {
  return {
    post: detail.post,
    comments: Array.isArray(comments) ? comments : [],
@@ -141,6 +150,8 @@ export function buildPostDetailSnapshot(detail: PostDetailResponse, comments: Co
    bountyCanRefund: detail.bounty_can_refund ?? true,
    bountyRefundBlockReason: detail.bounty_refund_block_reason ?? '',
    bountyEligibleReplyCount: detail.bounty_eligible_reply_count ?? 0,
+    authorProfile: author?.user ?? null,
+    authorStats: author?.stats ?? null,
    scrollTop: 0,
  };
 }
--- a/frontend/src/utils/prefetchRoute.ts
+++ b/frontend/src/utils/prefetchRoute.ts
@@ -127,7 +127,11 @@ async function prefetchPost(id: number, force: boolean): Promise<void> {
    api.post(id),
    api.comments(id, myIds),
  ]);
-  const snap = buildPostDetailSnapshot(detail, comm.comments);
+  // 作者主页资料一并预热（右栏作者卡首帧直接渲染；失败降级为卡片自行拉取）
+  const author = detail.post.user_id
+    ? await api.userProfile(detail.post.user_id).catch(() => null)
+    : null;
+  const snap = buildPostDetailSnapshot(detail, comm.comments, author);
  setSessionSnapshot(key, snap);
 }