fix(ui): 竞品分析素材流程改 Drawer、日期筛选取 DatePicker、选择素材按钮降级并区分已选中态（走查 P2-#13）

web/src/pages/creator/competitors/index.tsx

@@ -1,9 +1,10 @@
 // 竞品分析：作品列表对齐 ant-design-pro card-list——antd Row/Col 响应式栅格 + Card 原样组合；
-// 作品详情改走 Drawer；素材三步处理与仿写流程内联卡片原样保留；筛选自动刷新、手动翻页不变。
+// 作品详情与素材处理均走 Drawer；日期筛选用 antd DatePicker；筛选自动刷新、手动翻页不变。
 // 平台筛选已随 migration 038（platform 收敛 douyin）移除。
 import { useEffect, useState } from 'react';
 import { CommentOutlined, LikeOutlined, ShareAltOutlined } from '@ant-design/icons';
-import { Alert, App, Button, Card, Col, Drawer, Empty, Flex, Input, InputNumber, Modal, Row, Select, Space, Spin, Table, Tag, Typography } from 'antd';
+import { Alert, App, Button, Card, Col, DatePicker, Drawer, Empty, Flex, Input, InputNumber, Modal, Row, Select, Space, Spin, Table, Tag, Typography } from 'antd';
+import type { Dayjs } from 'dayjs';
 import { creatorAction, creatorGet, creatorUpdate, getList } from '@/services/api';
 import { conflictMessage, dateTime } from '@/utils/helpers';
 
@@ -25,8 +26,8 @@ interface Filters {
   minComments?: number;
   minShares?: number;
   publishedAtStatus?: string;
-  publishedAfter?: string;
-  publishedBefore?: string;
+  publishedAfter?: Dayjs;
+  publishedBefore?: Dayjs;
 }
 
 function statusTag(status?: string) {
@@ -224,8 +225,20 @@ export default function Page() {
               onChange={(value) => setFilters((f) => ({ ...f, publishedAtStatus: value }))}
               options={publishedAtStatusOptions}
             />
-            <Input type="date" style={{ width: 160 }} value={filters.publishedAfter} onChange={(e) => setFilters((f) => ({ ...f, publishedAfter: e.target.value }))} />
-            <Input type="date" style={{ width: 160 }} value={filters.publishedBefore} onChange={(e) => setFilters((f) => ({ ...f, publishedBefore: e.target.value }))} />
+            <DatePicker
+              style={{ width: 160 }}
+              placeholder="发布开始日期"
+              value={filters.publishedAfter}
+              onChange={(value) => setFilters((f) => ({ ...f, publishedAfter: value ?? undefined }))}
+              allowClear
+            />
+            <DatePicker
+              style={{ width: 160 }}
+              placeholder="发布结束日期"
+              value={filters.publishedBefore}
+              onChange={(value) => setFilters((f) => ({ ...f, publishedBefore: value ?? undefined }))}
+              allowClear
+            />
           </Space>
         </Card>
         <Card title="作品与指标">
@@ -255,8 +268,13 @@ export default function Page() {
                         <Button key="detail" type="link" size="small" onClick={() => openWorkDetail(work.id)} disabled={workDetailPending}>
                           详情
                         </Button>,
-                        <Button key="select" type="primary" size="small" onClick={() => selectMaterial(work.id)}>
-                          选择素材
+                        <Button
+                          key="select"
+                          type={material?.work_id === work.id ? 'primary' : 'default'}
+                          size="small"
+                          onClick={() => selectMaterial(work.id)}
+                        >
+                          {material?.work_id === work.id ? '编辑素材' : '选择素材'}
                         </Button>,
                         ...(work.original_url ? [<Typography.Link key="origin" href={work.original_url} target="_blank">原文</Typography.Link>] : []),
                       ]}
@@ -306,65 +324,73 @@ export default function Page() {
             </Flex>
           ) : null}
         </Card>
+      <Drawer
+        open={Boolean(material)}
+        onClose={() => setMaterial(null)}
+        size="large"
+        title="素材处理"
+        destroyOnHidden
+      >
         {material ? (
-          <Card size="small" title="素材处理">
-            <Typography.Paragraph type="secondary" style={{ marginTop: 0 }}>每一步都保留真实状态；失败不会被显示为成功。</Typography.Paragraph>
-            <Flex vertical gap={12}>
-              <div>
-                <Button type="primary" onClick={processMaterial} loading={materialPending || material.download_status === 'running'}>
-                  开始处理素材
-                </Button>
-              </div>
-              <Space wrap>
-                {stepTag(material.download_status, `下载：${material.download_status}`)}
-                {stepTag(material.audio_status, `音轨：${material.audio_status}`)}
-                {stepTag(material.transcription_status, `转写：${material.transcription_status}`)}
-              </Space>
-              {material.failure_reason ? (
-                <Alert type="error" showIcon title={`失败步骤：${material.failed_step || '未记录'}；${material.failure_reason}`} />
-              ) : null}
-              <div>
-                <Typography.Text strong>仿写要求</Typography.Text>
-                <Typography.Paragraph type="secondary" style={{ fontSize: 12, marginBottom: 4 }}>必须先确认要求，才允许保存可编辑结果。</Typography.Paragraph>
-                <Input.TextArea
-                  rows={3}
-                  value={rewriteRequirement}
-                  onChange={(event) => setRewriteRequirement(event.target.value)}
-                  disabled={Boolean(material.rewrite_confirmed_at) || materialPending}
-                />
-              </div>
-              {material.rewrite_confirmed_at ? (
-                <>
-                  <Flex gap={8} align="center">
-                    <Button onClick={generateRewrite} disabled={materialPending}>
-                      生成仿写草稿
-                    </Button>
-                    <Typography.Text type="secondary" style={{ fontSize: 12 }}>生成结果不会自动发布，保存前必须人工复核。</Typography.Text>
-                  </Flex>
-                  <div>
-                    <Typography.Text>可编辑标题</Typography.Text>
-                    <Input value={rewriteTitle} onChange={(event) => setRewriteTitle(event.target.value)} style={{ marginTop: 4 }} />
-                  </div>
-                  <div>
-                    <Typography.Text>可编辑口播</Typography.Text>
-                    <Input.TextArea rows={5} value={rewriteScript} onChange={(event) => setRewriteScript(event.target.value)} style={{ marginTop: 4 }} />
-                  </div>
-                  <div>
-                    <Button type="primary" onClick={saveRewrite} disabled={materialPending}>
-                      保存仿写结果
-                    </Button>
-                  </div>
-                </>
-              ) : (
-                <div>
-                  <Button type="primary" onClick={confirmRewrite} disabled={materialPending || !materialReadyForConfirm}>
-                    确认仿写要求
-                  </Button>
-                </div>
-              )}
-            </Flex>
-          </Card>
+          <Flex vertical gap={12}>
+  <Typography.Paragraph type="secondary" style={{ marginTop: 0 }}>每一步都保留真实状态；失败不会被显示为成功。</Typography.Paragraph>
+  <Flex vertical gap={12}>
+    <div>
+      <Button type="primary" onClick={processMaterial} loading={materialPending || material.download_status === 'running'}>
+        开始处理素材
+      </Button>
+    </div>
+    <Space wrap>
+      {stepTag(material.download_status, `下载：${material.download_status}`)}
+      {stepTag(material.audio_status, `音轨：${material.audio_status}`)}
+      {stepTag(material.transcription_status, `转写：${material.transcription_status}`)}
+    </Space>
+    {material.failure_reason ? (
+      <Alert type="error" showIcon title={`失败步骤：${material.failed_step || '未记录'}；${material.failure_reason}`} />
+    ) : null}
+    <div>
+      <Typography.Text strong>仿写要求</Typography.Text>
+      <Typography.Paragraph type="secondary" style={{ fontSize: 12, marginBottom: 4 }}>必须先确认要求，才允许保存可编辑结果。</Typography.Paragraph>
+      <Input.TextArea
+        rows={3}
+        value={rewriteRequirement}
+        onChange={(event) => setRewriteRequirement(event.target.value)}
+        disabled={Boolean(material.rewrite_confirmed_at) || materialPending}
+      />
+    </div>
+    {material.rewrite_confirmed_at ? (
+      <>
+        <Flex gap={8} align="center">
+          <Button onClick={generateRewrite} disabled={materialPending}>
+            生成仿写草稿
+          </Button>
+          <Typography.Text type="secondary" style={{ fontSize: 12 }}>生成结果不会自动发布，保存前必须人工复核。</Typography.Text>
+        </Flex>
+        <div>
+          <Typography.Text>可编辑标题</Typography.Text>
+          <Input value={rewriteTitle} onChange={(event) => setRewriteTitle(event.target.value)} style={{ marginTop: 4 }} />
+        </div>
+        <div>
+          <Typography.Text>可编辑口播</Typography.Text>
+          <Input.TextArea rows={5} value={rewriteScript} onChange={(event) => setRewriteScript(event.target.value)} style={{ marginTop: 4 }} />
+        </div>
+        <div>
+          <Button type="primary" onClick={saveRewrite} disabled={materialPending}>
+            保存仿写结果
+          </Button>
+        </div>
+      </>
+    ) : (
+      <div>
+        <Button type="primary" onClick={confirmRewrite} disabled={materialPending || !materialReadyForConfirm}>
+          确认仿写要求
+        </Button>
+      </div>
+    )}
+  </Flex>
+          </Flex>
         ) : null}
+      </Drawer>
       </Flex>
       <Drawer open={Boolean(workDetail)} onClose={() => setWorkDetail(null)} size="large" title="作品详情">
         {workDetail ? (