fix(admin): use feature interest composite key

apps/admin/src/lib/featureInterests.test.ts

@@ -1,16 +1,20 @@
 import { describe, expect, it } from 'vitest';
-import { formatFeatureName, toRecentFeatureInterest } from './featureInterests';
+import { featureInterestKey, formatFeatureName, toRecentFeatureInterest } from './featureInterests';
 
 describe('toRecentFeatureInterest', () => {
     it('preserves the standalone API feature field for dashboard rendering', () => {
         const interest = toRecentFeatureInterest({
-            id: 'interest-1',
             user_id: 'user-1',
             feature: 'better_chat',
             created_at: '2026-09-05T12:00:00.000Z',
         });
 
-        expect(interest.feature).toBe('better_chat');
+        expect(interest).toEqual({
+            user_id: 'user-1',
+            feature: 'better_chat',
+            created_at: '2026-09-05T12:00:00.000Z',
+        });
         expect(formatFeatureName(interest.feature)).toBe('Better Chat');
+        expect(featureInterestKey(interest)).toBe('user-1:better_chat');
     });
 });

apps/admin/src/lib/featureInterests.ts

@@ -1,5 +1,4 @@
 export interface FeatureInterestRow {
-    id: string;
     user_id: string;
     feature: string;
     created_at: string;
@@ -16,13 +15,16 @@ export interface RecentFeatureInterest extends FeatureInterestRow {
 
 export function toRecentFeatureInterest(row: FeatureInterestRow): RecentFeatureInterest {
     return {
-        id: row.id,
         user_id: row.user_id,
         feature: row.feature,
         created_at: row.created_at,
     };
 }
 
+export function featureInterestKey(row: Pick<FeatureInterestRow, 'user_id' | 'feature'>): string {
+    return `${row.user_id}:${row.feature}`;
+}
+
 export function formatFeatureName(feature: string): string {
     return feature
         .split('_')

apps/admin/src/pages/DashboardPage.tsx

@@ -12,6 +12,7 @@ import { useRealtimeSubscription } from '@/hooks/useRealtimeSubscription';
 import { RealtimeStatusIndicator } from '@/components/RealtimeStatusIndicator';
 import {
     formatFeatureName,
+    featureInterestKey,
     toRecentFeatureInterest,
     type FeatureInterestRow,
     type RecentFeatureInterest,
@@ -80,7 +81,7 @@ export function DashboardPage() {
                     ? adminData.from('feature_interests').select('created_at, user_id').gte('created_at', startDate.toISOString()).lte('created_at', endDate.toISOString())
                     : Promise.resolve({ data: [] }),
                 canViewUsers
-                    ? adminData.from<FeatureInterestRow>('feature_interests').select('id, user_id, feature, created_at').order('created_at', { ascending: false }).limit(10)
+                    ? adminData.from<FeatureInterestRow>('feature_interests').select('user_id, feature, created_at').order('created_at', { ascending: false }).limit(10)
                     : Promise.resolve({ data: [] }),
             ]);
 
@@ -566,7 +567,7 @@ export function DashboardPage() {
                                                         .toUpperCase();
 
                                                     return (
-                                                        <div key={item.id} className="flex items-center justify-between gap-4 rounded-xl bg-white/5 p-3">
+                                                        <div key={featureInterestKey(item)} className="flex items-center justify-between gap-4 rounded-xl bg-white/5 p-3">
                                                             <div className="flex items-center gap-3 min-w-0">
                                                                 <Avatar className="h-8 w-8">
                                                                     <AvatarImage src={item.profile?.avatar_url || undefined} />