feat: wire admin workflows to real APIs

src/apps/admin/AdminEnterpriseSignaturesPage.tsx

@@ -380,7 +380,7 @@ export function AdminEnterpriseSignaturesPage() {
   const [activeTab, setActiveTab] = useState<SignatureKind>('sms');
   const [smsSignatures, setSmsSignatures] = useState(initialSmsSignatures);
   const [mmsSignatures, setMmsSignatures] = useState(initialMmsSignatures);
-  const [expandedSignatureId, setExpandedSignatureId] = useState('sig-1');
+  const [expandedSignatureId, setExpandedSignatureId] = useState('');
   const [enterpriseKeyword, setEnterpriseKeyword] = useState('');
   const [signatureKeyword, setSignatureKeyword] = useState('');
   const [page, setPage] = useState(1);
@@ -491,7 +491,7 @@ export function AdminEnterpriseSignaturesPage() {
                 <div className="signature-actions">
                   <Button icon={<FileText size={16} />} onClick={() => setSignatureReport(signature)} size="sm" variant="ghost">报备详情</Button>
                   <Button icon={<Edit3 size={16} />} onClick={() => setSignatureModal({ kind: 'sms', item: signature })} size="sm" variant="ghost">编辑</Button>
-                  <Button icon={<Trash2 size={16} />} onClick={() => setDeleteTarget({ kind: 'signature', signatureKind: 'sms', id: signature.id, name: signature.name })} size="sm" variant="ghost">删除</Button>
+                  <Button icon={<Trash2 size={16} />} onClick={() => setDeleteTarget({ kind: 'signature', signatureKind: 'sms', id: signature.id, name: signature.name })} size="sm" variant="danger">删除</Button>
                 </div>
               </div>
 
@@ -518,9 +518,9 @@ export function AdminEnterpriseSignaturesPage() {
                           <StatusTag status={item.telecom} />
                           <span className="muted">{item.submittedAt}</span>
                           <span className="drainage-row-actions">
-                            <button onClick={() => setDrainageReport(item)} type="button">报备详情</button>
-                            <button onClick={() => setDrainageModal({ signatureId: signature.id, item })} type="button">编辑</button>
-                            <button onClick={() => setDeleteTarget({ kind: 'drainage', signatureId: signature.id, id: item.id, name: item.siteName })} type="button">删除</button>
+                            <Button onClick={() => setDrainageReport(item)} size="sm" variant="ghost">报备详情</Button>
+                            <Button onClick={() => setDrainageModal({ signatureId: signature.id, item })} size="sm" variant="ghost">编辑</Button>
+                            <Button onClick={() => setDeleteTarget({ kind: 'drainage', signatureId: signature.id, id: item.id, name: item.siteName })} size="sm" variant="danger">删除</Button>
                           </span>
                         </div>
                       ))}