C1: 新增轻量任务看板/board(按状态分列只读视图)

- board/components.tsx: BOARD_COLUMNS(4列:生成中/待审核/已通过/已打回)+TaskCard(只读点击进详情)+BoardColumn+BoardSkeleton
- board/page.tsx: 复用 GET /api/v1/tasks?status=...(跟随角色不写前端权限),failed/archived不进看板
- Sidebar: 加「任务看板」📋入口;顺修两项同href的重复key warning(改key=label)
- 卡片跳转:进行中/待审核→confirm,已通过/打回→images(路由均已存在)

独立agent交叉复核6项全过(状态全覆盖/多status参数与history一致/无前端权限/无死链/字段判空/边界安全),无must-fix

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/app/board/components.tsx

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+'use client';
+/**
+ * 任务看板子组件：BoardColumn（状态列）+ TaskCard（任务卡，只读，点击进详情）
+ * C1（倩倩姐2026-06-18拍板「做轻量看板」）：按状态分列只读视图，无拖拽。
+ * 复用 history 的状态色 + Link 跳转风格，保持视觉一致不割裂。
+ */
+import Link from 'next/link';
+import { clsx } from 'clsx';
+import { TaskListItem } from '@/types';
+
+// 列定义：4 列主流程，每列收哪些 status（倩倩姐拍板 failed/archived 不进看板）
+export interface ColumnDef {
+  key: string;
+  label: string;
+  statuses: string[];
+  accent: string;   // 列头强调色
+}
+
+export const BOARD_COLUMNS: ColumnDef[] = [
+  { key: 'generating', label: '生成中',
+    statuses: ['pending', 'generating', 'pending_selection'],
+    accent: 'text-blue-600 bg-blue-50' },
+  { key: 'review', label: '待审核',
+    statuses: ['pending_review'], accent: 'text-amber-600 bg-amber-50' },
+  { key: 'approved', label: '已通过',
+    statuses: ['approved'], accent: 'text-green-600 bg-green-50' },
+  { key: 'rejected', label: '已打回',
+    statuses: ['rejected'], accent: 'text-red-500 bg-red-50' },
+];
+
+// 卡片点击目标：生成中/待审核进 confirm 看文案，其余进 images 排图/查看
+function cardHref(task: TaskListItem): string {
+  if (['pending', 'generating', 'pending_selection', 'pending_review'].includes(task.status)) {
+    return `/tasks/${task.id}/confirm`;
+  }
+  return `/tasks/${task.id}/images`;
+}
+
+// --- TaskCard --- 单个任务卡，点击进详情
+export function TaskCard({ task }: { task: TaskListItem }) {
+  return (
+    <Link
+      href={cardHref(task)}
+      aria-label={`任务 ${task.theme}`}
+      className="block rounded-lg border border-border-default bg-white p-3 hover:border-brand-orange hover:shadow-sm transition-all"
+    >
+      <p className="text-sm font-medium text-text-primary line-clamp-2">{task.theme}</p>
+      <p className="mt-1 text-xs text-text-secondary">{task.product_name ?? '—'}</p>
+      <div className="mt-2 flex items-center gap-2 text-xs text-text-tertiary">
+        <span>{task.text_count} 文</span>
+        <span>·</span>
+        <span>{task.image_count} 图</span>
+        <span className="ml-auto">{new Date(task.created_at).toLocaleDateString('zh-CN')}</span>
+      </div>
+      {/* 被打回任务：列内直接显示原因摘要，运营一眼看到为何被打回 */}
+      {task.status === 'rejected' && task.reject_reason && (
+        <p className="mt-2 rounded bg-red-50 px-2 py-1 text-xs text-red-600 line-clamp-2">
+          {task.reject_reason}
+        </p>
+      )}
+    </Link>
+  );
+}
+
+// --- BoardColumn --- 状态列：列头 + 计数 + 卡片堆叠
+export function BoardColumn({ col, tasks }: { col: ColumnDef; tasks: TaskListItem[] }) {
+  return (
+    <div className="flex flex-col min-w-[240px] flex-1 rounded-xl bg-surface-secondary p-3">
+      <div className="mb-3 flex items-center gap-2">
+        <span className={clsx('px-2 py-0.5 rounded-full text-xs font-medium', col.accent)}>
+          {col.label}
+        </span>
+        <span className="text-xs text-text-tertiary">{tasks.length}</span>
+      </div>
+      <div className="flex flex-col gap-2 overflow-y-auto">
+        {tasks.length === 0 ? (
+          <p className="py-8 text-center text-xs text-text-tertiary">暂无任务</p>
+        ) : (
+          tasks.map((t) => <TaskCard key={t.id} task={t} />)
+        )}
+      </div>
+    </div>
+  );
+}
+
+// --- BoardSkeleton --- 加载骨架
+export function BoardSkeleton() {
+  return (
+    <div className="flex gap-4 animate-pulse">
+      {BOARD_COLUMNS.map((c) => (
+        <div key={c.key} className="flex-1 min-w-[240px] rounded-xl bg-surface-secondary p-3">
+          <div className="mb-3 h-5 w-16 rounded bg-gray-200" />
+          {Array.from({ length: 3 }).map((_, i) => (
+            <div key={i} className="mb-2 h-20 rounded-lg bg-gray-200" />
+          ))}
+        </div>
+      ))}
+    </div>
+  );
+}

frontend/src/app/board/page.tsx

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+'use client';
+/**
+ * 任务看板 /board
+ * C1（倩倩姐2026-06-18拍板「做轻量看板」）：按状态分列只读视图，点卡片进任务，无拖拽。
+ * 数据：GET /api/v1/tasks?status=...（跟随角色——运营看自己/组长管理员看全工作区，
+ *       权限逻辑与 history/review 一致，复用后端 list_tasks 不改接口）。
+ * failed/archived 不进看板（倩倩姐拍板），留在历史归档页看。
+ */
+import { useEffect, useState, useCallback } from 'react';
+import { api } from '@/lib/api';
+import { TaskListItem, PaginatedResponse } from '@/types';
+import { getErrorAction } from '@/types/errors';
+import { BOARD_COLUMNS, BoardColumn, BoardSkeleton } from './components';
+
+// 看板需要的全部状态（4 列并集），一次拉齐再前端分组
+const BOARD_STATUSES = BOARD_COLUMNS.flatMap((c) => c.statuses);
+const PAGE_SIZE = 100;   // 看板一屏尽量全展示，进行中任务通常不会超百量级
+
+export default function BoardPage() {
+  const [tasks, setTasks] = useState<TaskListItem[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const fetchTasks = useCallback(async () => {
+    setLoading(true);
+    setError(null);
+    try {
+      const params = new URLSearchParams({ page: '1', page_size: String(PAGE_SIZE) });
+      BOARD_STATUSES.forEach((s) => params.append('status', s));
+      const res = await api.get<PaginatedResponse<TaskListItem>>(`/api/v1/tasks?${params}`);
+      setTasks(res.items);
+    } catch (e: unknown) {
+      const ae = e as { code?: number };
+      setError(getErrorAction(ae.code ?? 50001).message);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => { fetchTasks(); }, [fetchTasks]);
+
+  // 按列分组：每列收自己 statuses 命中的任务
+  const byColumn = BOARD_COLUMNS.map((col) => ({
+    col,
+    items: tasks.filter((t) => col.statuses.includes(t.status)),
+  }));
+
+  return (
+    <div className="flex flex-col gap-6 p-6 h-full">
+      <div className="flex items-center justify-between">
+        <h1 className="text-xl font-semibold text-text-primary">任务看板</h1>
+        <button
+          onClick={fetchTasks}
+          className="text-sm text-brand-orange hover:underline"
+          aria-label="刷新看板"
+        >
+          刷新
+        </button>
+      </div>
+
+      {error && (
+        <div className="rounded-lg bg-red-50 border border-red-200 p-4 text-sm text-red-600">
+          {error}
+          <button className="ml-4 underline" onClick={fetchTasks}>重试</button>
+        </div>
+      )}
+
+      {loading ? (
+        <BoardSkeleton />
+      ) : (
+        <div className="flex gap-4 flex-1 overflow-x-auto">
+          {byColumn.map(({ col, items }) => (
+            <BoardColumn key={col.key} col={col} tasks={items} />
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}