Adopt shared WebUI layout primitives

webui/src/features/campaigns/CampaignReportPage.tsx

@@ -14,7 +14,7 @@ import {
   type CampaignJobsResponse,
   type CampaignRetentionReport } from
 "../../api/campaigns";
-import { Card } from "@govoplan/core-webui";
+import { ContentGrid, Card } from "@govoplan/core-webui";
 import { Button } from "@govoplan/core-webui";
 import { ConfirmDialog } from "@govoplan/core-webui";
 import { DataGrid, type DataGridColumn, type DataGridListOption, type DataGridQueryState } from "@govoplan/core-webui";
@@ -461,7 +461,7 @@ export default function CampaignReportPage({ settings, campaignId }: {settings:
       }
     >
       <LoadingFrame loading={loading} label="i18n:govoplan-campaign.loading_report_data.0908ade5">
-        <div className="dashboard-grid">
+        <ContentGrid columns={2} collapseAt="workspace" className="">
           <Card title="i18n:govoplan-campaign.delivery_outcome.f9d7c085">
             <dl className="detail-list">
               <div><dt>i18n:govoplan-campaign.generated.8eefdd52</dt><dd>{formatDateTime(data.summary?.generated_at)}</dd></div>
@@ -536,7 +536,7 @@ export default function CampaignReportPage({ settings, campaignId }: {settings:
               <Button onClick={() => void runExplicitAction("unattempted")} disabled={!version || Boolean(busyAction)}>i18n:govoplan-campaign.send_unattempted_jobs.db7acc9f</Button>
             </div>
           </Card>
-        </div>
+        </ContentGrid>
 
         <Card title="i18n:govoplan-campaign.recipient_delivery_jobs.52492608">
           <p className="muted small-note">