Add related cases and duplicate review suggestions

src/routes/moderation/cases/[id]/+page.svelte

@@ -32,6 +32,7 @@
     import EvidenceMessages from '$ui/components/moderation/EvidenceMessages.svelte';
     import LinkCaseActionDialog from '$ui/components/moderation/LinkCaseActionDialog.svelte';
     import CaseAssessment from '$ui/components/moderation/CaseAssessment.svelte';
+    import CaseRelationships from '$ui/components/moderation/CaseRelationships.svelte';
     import { preservedConversation } from '$ui/moderation-evidence.js';
 
     let { data }: { data: { moderationCase: ModerationCaseDetail } } = $props();
@@ -395,6 +396,19 @@
         </div>
 
         <aside class="case-sidebar">
+            <CaseRelationships
+                caseId={item.id}
+                revision={item.revision}
+                relationships={report.relatedCases}
+                candidates={report.candidateCases}
+                {permitted}
+                onsubmitted={() => {
+                    notice =
+                        'Case relationship updated. The change is recorded in both case histories.';
+                    cancelRefresh();
+                    void refresh();
+                }}
+            />
             <section class="panel" aria-labelledby="player-title">
                 <h2 id="player-title">Player identity</h2>
                 <a class="player-name" href={contextHref(playerProfileHref(item.guid), $page.url)}