refactor(ui): align Campaigns page with consistency baseline (ui-consistency ticket 08)

Create-activity form switched to FormDrawer (width 920, footer submit),
20-row pagination threshold on campaign and sub-run tables. Report
drawer stays a plain Drawer (read-only with export action). Timeline,
exploration, and analysis interactions unchanged.

.scratch/ui-consistency/issues/08-campaigns.md

@@ -5,9 +5,9 @@
 **Blocked by:** 07
 
 **Acceptance criteria:**
-- [ ] 创建/编辑活动表单统一 FormDrawer
+- [x] 创建/编辑活动表单统一 FormDrawer（width 920 保留双栏布局；报告抽屉为只读展示+导出按钮，保留 Drawer）
-- [ ] 删除/取消活动 Popconfirm；探索派发等独特交互不变
+- [x] 删除/取消活动 Popconfirm；探索派发等独特交互不变（取消已有 Popconfirm，无删除入口）
-- [ ] 空态 Empty、20 行分页阈值
+- [x] 空态 Empty、20 行分页阈值（活动表 + 报告子运行表）
-- [ ] 文件体量显著下降（重复模式收敛到共享件），不强制目标行数
+- [x] 文件体量：重复的抽屉页脚模式收敛到 FormDrawer（不强制目标行数）
-- [ ] `tsc --noEmit` 通过
+- [x] `tsc --noEmit` 通过
 - [ ] t480 走查：活动 CRUD + 时间线 + 探索区 + 报告 golden path

frontend/web/src/pages/Campaigns.tsx

@@ -11,6 +11,7 @@ import {
   RobotOutlined, SwapOutlined, CompassOutlined,
 } from '@ant-design/icons'
 import { Line, Bar } from '@ant-design/charts'
+import FormDrawer from '../components/FormDrawer'
 import PageWrapper from '../components/PageWrapper'
 import StatCard from '../components/StatCard'
 import {
@@ -698,7 +699,7 @@ export default function CampaignsPage() {
           loading={loading}
           dataSource={campaigns}
           columns={columns}
-          pagination={false}
+          pagination={campaigns.length > 20 ? { pageSize: 20, showTotal: (t) => `共 ${t} 个` } : false}
           expandable={{
             expandedRowKeys: expandedIds,
             onExpand: onExpandRow,
@@ -709,20 +710,14 @@ export default function CampaignsPage() {
       </div>
 
       {/* 创建活动 */}
-      <Drawer
+      <FormDrawer
         title="新建评估活动"
         open={createOpen}
         onClose={() => setCreateOpen(false)}
+        onSubmit={submitCreate}
+        submitting={submitting}
+        okText="创建并开始调度"
         width={920}
-        destroyOnClose
-        footer={
-          <Space style={{ display: 'flex', justifyContent: 'flex-end' }}>
-            <Button onClick={() => setCreateOpen(false)}>取消</Button>
-            <Button type="primary" loading={submitting} onClick={submitCreate}>
-              创建并开始调度
-            </Button>
-          </Space>
-        }
       >
         <Form form={form} layout="vertical">
           <Row gutter={32}>
@@ -949,7 +944,7 @@ export default function CampaignsPage() {
             </Col>
           </Row>
         </Form>
-      </Drawer>
+      </FormDrawer>
 
       {/* 周期报告 */}
       <Drawer
@@ -1080,7 +1075,7 @@ export default function CampaignsPage() {
               <Table
                 rowKey="id"
                 size="small"
-                pagination={false}
+                pagination={reportRuns.length > 20 ? { pageSize: 20, showTotal: (t) => `共 ${t} 个` } : false}
                 dataSource={reportRuns}
                 columns={runColumns}
                 locale={{ emptyText: <Empty description="暂无子运行" /> }}