feat(distribution): 分站发布群只使用自己的二维码池

主站单独维护分站码池，池空时不再借用主站或其他分站，并去掉已停用的固定二维码入口。

Co-authored-by: Cursor <cursoragent@cursor.com>

distribution-admin/src/pages/SiteSettings.tsx

@@ -149,7 +149,6 @@ export default function SiteSettings() {
   const [awEntry, setAwEntry] = useState<HomeEntryConfig>(defaultAWEntry)
   const [coopUseMain, setCoopUseMain] = useState(true)
   const [coopEntry, setCoopEntry] = useState<HomeEntryConfig>(defaultCoopEntry)
-  const [listingQrcode, setListingQrcode] = useState('')
   const [savingRatio, setSavingRatio] = useState(false)
 
   // SMS config state
@@ -226,7 +225,6 @@ export default function SiteSettings() {
         const coop = parseHomeEntry(found.cooperation_feedback_json, defaultCoopEntry)
         setCoopUseMain(coop.useMain)
         setCoopEntry(coop.value)
-        setListingQrcode(found.listing_qrcode_url || '')
 
         try {
           const sms = await fetchSiteSMSConfig(id)
@@ -524,7 +522,6 @@ export default function SiteSettings() {
         aw_recycle_json: awUseMain ? '' : JSON.stringify(awEntry),
         cooperation_feedback_json: coopUseMain ? '' : JSON.stringify(coopEntry),
         storefront_text_json: storefrontTextFilled(storefrontText),
-        listing_qrcode_url: listingQrcode.trim(),
       }
       const updated = await updateSiteBranding(siteID, payload)
       setCurrentSite(updated)
@@ -994,13 +991,13 @@ export default function SiteSettings() {
                 },
                 {
                   key: 'entries',
-                  label: '首页入口与客服二维码',
+                  label: '首页入口',
                   children: (
                     <Space direction="vertical" style={{ width: '100%' }} size="large">
                       <Alert
                         type="info"
                         showIcon
-                        message="回收和合作入口默认继承主站。关掉继承后，只影响当前分销站首页。客服二维码用于号主发布后进群；留空时先用本站二维码池，没有再使用主站二维码池。"
+                        message="回收和合作入口默认继承主站。关掉继承后，只影响当前分销站首页。发布群进群码由主站在分站二维码池维护。"
                       />
                       <div>
                         <Typography.Text strong>AW炫彩回收</Typography.Text>
@@ -1020,28 +1017,6 @@ export default function SiteSettings() {
                           )}
                         </div>
                       </div>
-                      <div>
-                        <Typography.Text strong>客服二维码</Typography.Text>
-                        <Space direction="vertical" style={{ width: '100%', marginTop: 8 }} size="small">
-                          {listingQrcode ? (
-                            <Image src={listingQrcode} width={160} style={{ objectFit: 'contain' }} />
-                          ) : (
-                            <Typography.Text type="secondary">未配置，发布群使用主站二维码池。</Typography.Text>
-                          )}
-                          <Space>
-                            <Upload
-                              accept="image/*"
-                              showUploadList={false}
-                              beforeUpload={(file) => uploadEntryImage(file, 'support-qrcode', setListingQrcode)}
-                            >
-                              <Button icon={<PictureOutlined />}>上传二维码</Button>
-                            </Upload>
-                            <Button disabled={!listingQrcode} onClick={() => setListingQrcode('')}>
-                              恢复主站
-                            </Button>
-                          </Space>
-                        </Space>
-                      </div>
                     </Space>
                   ),
                 },