feat(studio/robot-authors): category filter + display_name & category columns

- searchable CategoryPicker (Popover+Command) reusable across studio pages,
  plus useCategoryOptions hook (shared tree query + id→name resolver)
- filter bar with category + status filters and a reset action
- new columns: account (avatar + display_name + uid), category name; persona
  demoted to a secondary column; display_name/category surfaced in detail sheet

src/api/types.ts

@@ -145,6 +145,9 @@ export interface StudioRobotAuthor {
   kind: 'studio_robot_author'
   id: string
   user_uid: string
+  /** Bound robot account's public name (index listing only). */
+  display_name?: string | null
+  avatar?: string | null
   category_id: string
   subtopic_id: string | null
   persona: string | null

src/features/categories/category-picker.tsx

@@ -0,0 +1,87 @@
+import { useState } from 'react'
+import { Check, ChevronsUpDown } from 'lucide-react'
+import { cn } from '@/lib/utils'
+import { useCategoryOptions } from './use-categories'
+import { Button } from '@/components/ui/button'
+import {
+  Command,
+  CommandEmpty,
+  CommandGroup,
+  CommandInput,
+  CommandItem,
+  CommandList,
+} from '@/components/ui/command'
+import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover'
+
+interface CategoryPickerProps {
+  /** selected category id, or null for "all" */
+  value: string | null
+  onChange: (id: string | null) => void
+  placeholder?: string
+  className?: string
+}
+
+/** Searchable category combobox (name + slug matchable), null = all. */
+export function CategoryPicker({
+  value,
+  onChange,
+  placeholder = '全部分类',
+  className,
+}: CategoryPickerProps) {
+  const [open, setOpen] = useState(false)
+  const { options, nameOf } = useCategoryOptions()
+
+  return (
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <Button
+          variant="outline"
+          size="sm"
+          role="combobox"
+          aria-expanded={open}
+          className={cn('w-56 justify-between font-normal', className)}
+        >
+          <span className="truncate">{value ? nameOf(value) : placeholder}</span>
+          <ChevronsUpDown className="size-4 shrink-0 opacity-50" />
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent className="w-56 p-0" align="start">
+        <Command>
+          <CommandInput placeholder="搜索分类…" />
+          <CommandList>
+            <CommandEmpty>无匹配分类</CommandEmpty>
+            <CommandGroup>
+              <CommandItem
+                value="__all__"
+                onSelect={() => {
+                  onChange(null)
+                  setOpen(false)
+                }}
+              >
+                <Check className={cn('size-4', value === null ? 'opacity-100' : 'opacity-0')} />
+                全部分类
+              </CommandItem>
+              {options.map((category) => (
+                <CommandItem
+                  key={category.id}
+                  value={`${category.name ?? category.slug} ${category.slug}`}
+                  onSelect={() => {
+                    onChange(category.id)
+                    setOpen(false)
+                  }}
+                >
+                  <Check
+                    className={cn('size-4', value === category.id ? 'opacity-100' : 'opacity-0')}
+                  />
+                  <span className="truncate" style={{ paddingLeft: category.depth * 12 }}>
+                    {category.name ?? category.slug}
+                  </span>
+                </CommandItem>
+              ))}
+            </CommandGroup>
+          </CommandList>
+        </Command>
+      </PopoverContent>
+    </Popover>
+  )
+}

src/features/categories/use-categories.ts

@@ -0,0 +1,25 @@
+import { useQuery } from '@tanstack/react-query'
+import { useMemo } from 'react'
+import { fetchCategoryTree, flattenTree } from '@/api/modules/categories'
+
+/**
+ * Flattened category tree for pickers, plus a resolver for showing category
+ * names in tables. The underlying tree query is shared (React Query dedupes),
+ * so calling this in both a picker and a table costs one request.
+ */
+export function useCategoryOptions() {
+  const query = useQuery({
+    queryKey: ['categories', 'tree'],
+    queryFn: () => fetchCategoryTree(true),
+  })
+
+  const options = useMemo(() => flattenTree(query.data?.data ?? []), [query.data])
+
+  const nameOf = useMemo(() => {
+    const map = new Map<string, string>()
+    for (const category of options) map.set(category.id, category.name ?? category.slug)
+    return (id?: string | null) => (id ? (map.get(id) ?? id) : '—')
+  }, [options])
+
+  return { options, nameOf, isLoading: query.isPending }
+}

src/routes/_authed/studio/robot-authors.tsx

@@ -1,18 +1,23 @@
 import { createFileRoute } from '@tanstack/react-router'
 import { useQueryClient } from '@tanstack/react-query'
 import { useState } from 'react'
+import { X } from 'lucide-react'
 import type { ColumnDef } from '@tanstack/react-table'
 import { toast } from 'sonner'
-import type { StudioRobotAuthor } from '@/api/types'
+import type { ListParams, StudioRobotAuthor } from '@/api/types'
 import { fetchRobotAuthors, updateRobotAuthor } from '@/api/modules/studio'
 import { handleApiError } from '@/lib/errors'
 import { useListPage } from '@/lib/list-page'
+import { CategoryPicker } from '@/features/categories/category-picker'
+import { useCategoryOptions } from '@/features/categories/use-categories'
 import { DetailSheet } from '@/features/studio/detail-sheet'
 import { DataTable } from '@/components/data-table/data-table'
 import { PageHeader } from '@/components/page-header'
 import { StatusPill } from '@/components/status-pill'
+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
 import { Badge } from '@/components/ui/badge'
 import { Button } from '@/components/ui/button'
+import { Label } from '@/components/ui/label'
 import {
   Select,
   SelectContent,
@@ -30,12 +35,21 @@ const STATUSES = ['pending', 'profiling', 'ready', 'paused'] as const
 function RobotAuthorsPage() {
   const queryClient = useQueryClient()
   const [status, setStatus] = useState('all')
+  const [categoryId, setCategoryId] = useState<string | null>(null)
   const [detail, setDetail] = useState<StudioRobotAuthor | null>(null)
-  const list = useListPage(
-    'studio-robot-authors',
-    fetchRobotAuthors,
-    status === 'all' ? {} : { status },
-  )
+  const { nameOf } = useCategoryOptions()
+
+  const filters: ListParams = {}
+  if (status !== 'all') filters.status = status
+  if (categoryId) filters.category_id = categoryId
+
+  const list = useListPage('studio-robot-authors', fetchRobotAuthors, filters)
+  const hasFilters = status !== 'all' || categoryId !== null
+
+  const resetFilters = () => {
+    setStatus('all')
+    setCategoryId(null)
+  }
 
   const setAuthorStatus = async (row: StudioRobotAuthor, next: 'ready' | 'paused') => {
     try {
@@ -50,13 +64,33 @@ function RobotAuthorsPage() {
 
   const columns: ColumnDef<StudioRobotAuthor>[] = [
     {
-      header: '作者',
+      header: '账号',
       cell: ({ row }) => (
-        <div>
-          <div className="max-w-72 truncate font-medium">
-            {row.original.persona?.slice(0, 40) || '（人设待补全）'}
+        <div className="flex items-center gap-2.5">
+          <Avatar className="size-8">
+            <AvatarImage src={row.original.avatar ?? undefined} alt="" />
+            <AvatarFallback>
+              {(row.original.display_name ?? 'R').slice(0, 1).toUpperCase()}
+            </AvatarFallback>
+          </Avatar>
+          <div className="min-w-0">
+            <div className="max-w-44 truncate font-medium">
+              {row.original.display_name || '（未命名）'}
+            </div>
+            <code className="font-mono text-xs text-muted-foreground">{row.original.user_uid}</code>
           </div>
-          <code className="font-mono text-xs text-muted-foreground">{row.original.user_uid}</code>
+        </div>
+      ),
+    },
+    {
+      header: '分类',
+      cell: ({ row }) => <span className="text-sm">{nameOf(row.original.category_id)}</span>,
+    },
+    {
+      header: '人设',
+      cell: ({ row }) => (
+        <div className="max-w-64 truncate text-sm text-muted-foreground">
+          {row.original.persona?.slice(0, 40) || '（待补全）'}
         </div>
       ),
     },
@@ -94,10 +128,15 @@ function RobotAuthorsPage() {
 
   return (
     <div>
-      <PageHeader
-        title="机器人作者"
-        description="由 cron 播种、Agent 补全人设；可在此暂停/恢复创作"
-        actions={
+      <PageHeader title="机器人作者" description="由 cron 播种、Agent 补全人设；可在此暂停/恢复创作" />
+
+      <div className="mb-4 flex flex-wrap items-end gap-4 rounded-lg border bg-card p-3">
+        <div className="grid gap-1.5">
+          <Label className="text-xs text-muted-foreground">分类</Label>
+          <CategoryPicker value={categoryId} onChange={setCategoryId} />
+        </div>
+        <div className="grid gap-1.5">
+          <Label className="text-xs text-muted-foreground">状态</Label>
           <Select value={status} onValueChange={setStatus}>
             <SelectTrigger size="sm" className="w-32">
               <SelectValue />
@@ -111,8 +150,15 @@ function RobotAuthorsPage() {
               ))}
             </SelectContent>
           </Select>
-        }
-      />
+        </div>
+        {hasFilters && (
+          <Button variant="ghost" size="sm" onClick={resetFilters}>
+            <X className="size-4" />
+            重置
+          </Button>
+        )}
+      </div>
+
       <DataTable
         columns={columns}
         data={list.rows}
@@ -121,13 +167,17 @@ function RobotAuthorsPage() {
         onPageChange={list.setPage}
         onPageSizeChange={list.setPageSize}
       />
+
       <DetailSheet
         open={detail !== null}
         onOpenChange={(open) => !open && setDetail(null)}
-        title="机器人作者详情"
+        title={detail?.display_name || '机器人作者详情'}
+        description={detail ? nameOf(detail.category_id) : undefined}
         fields={[
           { label: 'ID', value: <code className="font-mono text-xs">{detail?.id}</code> },
+          { label: '账号昵称', value: detail?.display_name },
           { label: '用户 UID', value: <code className="font-mono text-xs">{detail?.user_uid}</code> },
+          { label: '分类', value: detail && nameOf(detail.category_id) },
           { label: '状态', value: detail && <StatusPill status={detail.status} /> },
           { label: '定位', value: detail?.positioning },
           { label: '目标读者', value: detail?.target_readers },