feat(history): add multi-account and WhatsApp foundation

src/pages/risks/RisksPage.tsx

@@ -55,7 +55,7 @@ export function RisksPage() {
     <div className="p-4 md:p-6">
       <PageHeader
         title="风险预警中心"
-        description="智能识别交易风险、客户流失信号与敏感表达，帮助团队主动应对"
+        description="查看交易风险、客户流失信号和敏感表达"
         actions={
           <PermissionGate permission="settings:manage">
             <Button size="sm" variant="outline" onClick={() => navigate('/settings')}><Settings className="h-4 w-4" />风险识别设置</Button>
@@ -116,7 +116,7 @@ export function RisksPage() {
               <span className="text-xs text-muted-foreground">{formatRelative(detail.createdAt)}</span>
             </div>
             <div>
-              <h4 className="text-sm font-semibold mb-1">AI 判断说明</h4>
+              <h4 className="text-sm font-semibold mb-1">判断依据</h4>
               <p className="text-sm text-muted-foreground leading-relaxed">{detail.aiExplanation}</p>
             </div>
             <div>