feat(studio/articles): Dimzou draft preview

Adds a 预览 action (enabled once an article has a Dimzou document) opening a
sheet that fetches and renders the draft — cover, title, summary, and body HTML
(typography/prose). Re-enables the @tailwindcss/typography plugin for prose.

src/api/modules/studio.ts

@@ -36,6 +36,20 @@ export const fetchStylePresets = (params: ListParams) =>
 export const updateRobotAuthor = (id: string, payload: Partial<StudioRobotAuthor>) =>
   api.put<ApiResponse<StudioRobotAuthor>>(`${BASE}/robot-authors/${id}`, payload)
 
+export interface ArticlePreview {
+  kind: 'studio_article_preview'
+  article_id: string
+  version_status: 'draft' | 'published' | null
+  title: string | null
+  summary: string | null
+  cover_image: { url: string; alt?: string | null } | null
+  body_html: string
+  has_content: boolean
+}
+
+export const fetchArticlePreview = (id: string) =>
+  api.get<ApiResponse<ArticlePreview>>(`${BASE}/articles/${id}/preview`)
+
 // ---- agent tokens (show-once) ----
 
 export const fetchAgentTokens = () =>

src/features/studio/article-preview-sheet.tsx

@@ -0,0 +1,94 @@
+import { useQuery } from '@tanstack/react-query'
+import { fetchArticlePreview } from '@/api/modules/studio'
+import type { StudioArticle } from '@/api/types'
+import { StatusPill } from '@/components/status-pill'
+import { Badge } from '@/components/ui/badge'
+import { Skeleton } from '@/components/ui/skeleton'
+import {
+  Sheet,
+  SheetContent,
+  SheetDescription,
+  SheetHeader,
+  SheetTitle,
+} from '@/components/ui/sheet'
+
+interface ArticlePreviewSheetProps {
+  article: StudioArticle | null
+  onOpenChange: (open: boolean) => void
+}
+
+/** Renders the article's Dimzou draft (title/summary/cover + body HTML). */
+export function ArticlePreviewSheet({ article, onOpenChange }: ArticlePreviewSheetProps) {
+  const preview = useQuery({
+    queryKey: ['studio-article-preview', article?.id],
+    queryFn: () => fetchArticlePreview(article!.id),
+    enabled: article !== null,
+  })
+
+  const data = preview.data?.data
+
+  return (
+    <Sheet open={article !== null} onOpenChange={onOpenChange}>
+      <SheetContent className="w-full overflow-y-auto sm:max-w-2xl">
+        <SheetHeader>
+          <SheetTitle className="flex items-center gap-2">
+            草稿预览
+            {data?.version_status && (
+              <Badge variant={data.version_status === 'draft' ? 'secondary' : 'default'}>
+                {data.version_status === 'draft' ? '草稿版本' : '已发布版本'}
+              </Badge>
+            )}
+            {article && <StatusPill status={article.status} />}
+          </SheetTitle>
+          <SheetDescription className="break-all">
+            {article?.dimzou_document_id
+              ? `Dimzou 文档 #${article.dimzou_document_id}`
+              : '尚未建稿'}
+          </SheetDescription>
+        </SheetHeader>
+
+        <div className="px-4 pb-10">
+          {preview.isPending ? (
+            <div className="flex flex-col gap-3">
+              <Skeleton className="h-40 w-full" />
+              <Skeleton className="h-6 w-2/3" />
+              <Skeleton className="h-4 w-full" />
+              <Skeleton className="h-4 w-full" />
+              <Skeleton className="h-4 w-5/6" />
+            </div>
+          ) : !data || (!data.has_content && !data.title) ? (
+            <p className="py-16 text-center text-sm text-muted-foreground">该文章尚无正文内容</p>
+          ) : (
+            <article>
+              {data.cover_image?.url && (
+                <img
+                  src={data.cover_image.url}
+                  alt={data.cover_image.alt ?? data.title ?? ''}
+                  className="mb-5 aspect-video w-full rounded-lg border object-cover"
+                />
+              )}
+              {data.title && (
+                <h1 className="mb-2 text-2xl font-semibold tracking-tight text-foreground">
+                  {data.title}
+                </h1>
+              )}
+              {data.summary && (
+                <p className="mb-6 border-l-2 pl-3 text-sm text-muted-foreground">{data.summary}</p>
+              )}
+              {data.has_content ? (
+                <div
+                  className="prose prose-sm max-w-none dark:prose-invert prose-headings:font-semibold prose-img:rounded-lg"
+                  // Body is our own agent-authored content rendered by the Dimzou
+                  // ProseMirror serializer (structured nodes, not arbitrary HTML).
+                  dangerouslySetInnerHTML={{ __html: data.body_html }}
+                />
+              ) : (
+                <p className="text-sm text-muted-foreground">（仅有标题/摘要，正文为空）</p>
+              )}
+            </article>
+          )}
+        </div>
+      </SheetContent>
+    </Sheet>
+  )
+}

src/routes/_authed/studio/articles.tsx

@@ -4,6 +4,7 @@ import type { ColumnDef } from '@tanstack/react-table'
 import type { StudioArticle } from '@/api/types'
 import { fetchArticles } from '@/api/modules/studio'
 import { useListPage } from '@/lib/list-page'
+import { ArticlePreviewSheet } from '@/features/studio/article-preview-sheet'
 import { DetailSheet } from '@/features/studio/detail-sheet'
 import { DataTable } from '@/components/data-table/data-table'
 import { PageHeader } from '@/components/page-header'
@@ -26,6 +27,7 @@ const STATUSES = ['planned', 'drafting', 'drafted', 'published', 'scheduled'] as
 function ArticlesPage() {
   const [status, setStatus] = useState('all')
   const [detail, setDetail] = useState<StudioArticle | null>(null)
+  const [preview, setPreview] = useState<StudioArticle | null>(null)
   const list = useListPage(
     'studio-articles',
     fetchArticles,
@@ -67,9 +69,19 @@ function ArticlesPage() {
     {
       header: '操作',
       cell: ({ row }) => (
-        <Button size="sm" variant="ghost" onClick={() => setDetail(row.original)}>
-          详情
-        </Button>
+        <div className="flex gap-1.5">
+          <Button
+            size="sm"
+            variant="outline"
+            disabled={!row.original.dimzou_document_id}
+            onClick={() => setPreview(row.original)}
+          >
+            预览
+          </Button>
+          <Button size="sm" variant="ghost" onClick={() => setDetail(row.original)}>
+            详情
+          </Button>
+        </div>
       ),
     },
   ]
@@ -132,6 +144,8 @@ function ArticlesPage() {
           { label: '发布排期', value: detail?.publish_schedule },
         ]}
       />
+
+      <ArticlePreviewSheet article={preview} onOpenChange={(open) => !open && setPreview(null)} />
     </div>
   )
 }

src/styles.css

@@ -1,5 +1,6 @@
 @import 'tailwindcss';
 @import 'tw-animate-css';
+@plugin "@tailwindcss/typography";
 
 @custom-variant dark (&:is(.dark *));