feat: enhance operations dashboard and reporting controls

src/apps/admin/enterprise-signatures/EnterpriseSignaturesTable.tsx

@@ -71,6 +71,15 @@ export function EnterpriseSignaturesTable({
           : payload.links;
         const cardVisual = signatureCardVisual(signature.auditStatus, signature.carrierReportSummary);
         const expanded = expandedSignatureId === signature.id || Boolean(appliedDrainageKeyword);
+        const signatureTooltip = [
+          `签名：${formatSignatureName(signature.name)}`,
+          `企业：${signature.tenant?.name ?? signature.tenantId}`,
+          `应用：${signature.application?.name ?? '未绑定应用'}`,
+          `用途：${signature.purpose || '未填写'}`,
+          `审核状态：${signature.auditStatus}`,
+          `创建时间：${signature.createdAt ? new Date(signature.createdAt).toLocaleString('zh-CN') : '未知'}`,
+          `更新时间：${signature.updatedAt ? new Date(signature.updatedAt).toLocaleString('zh-CN') : '未知'}`,
+        ].join('\n');
         return (
           <article
             aria-label={`签名总体状态：${cardVisual.label}`}
@@ -86,7 +95,7 @@ export function EnterpriseSignaturesTable({
               >
                 {expanded ? <ChevronDown size={18} /> : <ChevronRight size={18} />}
               </button>
-              <div className="enterprise-signature-table__signature" data-label="签名">
+              <div aria-label={signatureTooltip} className="enterprise-signature-table__signature" data-label="签名" title={signatureTooltip}>
                 <strong>{formatSignatureName(signature.name)}</strong>
               </div>
               <div data-label="企业">