Add related cases and duplicate review suggestions

src/lib/server/moderation/actions.ts

@@ -3,6 +3,7 @@ import { db } from '../db/index.js';
 import { archivedEvidenceSnapshots } from './evidence.js';
 import { caseActionReference, recordedCaseAction, isCaseActionLinked } from './case-actions.js';
 import { assessmentDraft } from './assessments.js';
+import { linkCases, unlinkCases } from './relationships.js';
 import { AuthError } from '../auth/index.js';
 import { moderatorMaximumRestrictionMs, type AuthUser } from '../../auth.js';
 import {
@@ -473,6 +474,21 @@ export function mutateModeration(actorId: string, input: Record<string, unknown>
         if (input.op === 'action') return liveAction(actor, input, now);
         if (input.op === 'create-case') return createCase(actor, input, now);
         if (input.op === 'update-case') return updateCase(actor, input, now);
+        if (input.op === 'link-case' || input.op === 'unlink-case') {
+            const row = caseRow(input.id);
+            checkCaseRevision(row, input.revision);
+            if (input.op === 'link-case')
+                linkCases(
+                    actor,
+                    row,
+                    caseRow(input.relatedCaseId),
+                    input.relation,
+                    input.reason,
+                    now
+                );
+            else unlinkCases(actor, row, input.relationshipId, input.reason, now);
+            return { id: row.id };
+        }
         if (input.op === 'assess-case') {
             const row = caseRow(input.id);
             checkCaseRevision(row, input.revision);