diff --git a/components/CollectionsPageView.js b/components/CollectionsPageView.js
index 98e7319..7ba1d64 100644
--- a/components/CollectionsPageView.js
+++ b/components/CollectionsPageView.js
@@ -1,4 +1,3 @@
-/* eslint-disable @next/next/no-img-element -- External or generated image URLs; next/image migration is out of scope. */
 import Link from 'next/link';
 import PermissionIndicator from './PermissionIndicator';
 import { VOCAB, collectionDisplayName } from '../lib/collection-vocabulary.js';
diff --git a/lib/use-camera-scanner.js b/lib/use-camera-scanner.js
index 7abfcc8..981dfa4 100644
--- a/lib/use-camera-scanner.js
+++ b/lib/use-camera-scanner.js
@@ -176,6 +176,16 @@ export function useCameraScanner({
     setTrackedCards(next);
   }, []);
 
+  const resetTrackedCard = useCallback((cardId) => {
+    const next = trackedCardsRef.current.map((card) => (
+      card.id === cardId
+        ? { ...card, status: 'detecting', scanAttempts: 0, negativeAt: undefined }
+        : card
+    ));
+    trackedCardsRef.current = next;
+    setTrackedCards(next);
+  }, []);
+
   const resetScanTrackers = useCallback(() => {
     trackedCardsRef.current = [];
     setTrackedCards([]);
@@ -429,6 +439,7 @@ export function useCameraScanner({
     startCamera,
     stopCamera,
     removeTrackedCard,
+    resetTrackedCard,
     resetScanTrackers,
     triggerManualScan,
     streamRef,
diff --git a/lib/use-scanner-identification.js b/lib/use-scanner-identification.js
index 828113d..0609db9 100644
--- a/lib/use-scanner-identification.js
+++ b/lib/use-scanner-identification.js
@@ -46,6 +46,7 @@ export function useScannerIdentification({
   onCardScanned,
   onError,
   onTrackerComplete,
+  onTrackerReset,
   videoRef,
   canvasRef,
   onVerifyCardRef,
@@ -118,10 +119,9 @@ export function useScannerIdentification({
   };
 
   const cancelDisambiguation = () => {
-    if (disambiguation?.cardTracker) {
-      disambiguation.cardTracker.status = 'detecting';
-      disambiguation.cardTracker.scanAttempts = 0;
-      disambiguation.cardTracker.negativeAt = undefined;
+    const { cardTracker } = disambiguation ?? {};
+    if (cardTracker) {
+      onTrackerReset?.(cardTracker.id);
     }
     setDisambiguation(null);
     disambiguationRefineRef.current = null;
diff --git a/pages/scanner.js b/pages/scanner.js
index 093164c..9a8e1f9 100644
--- a/pages/scanner.js
+++ b/pages/scanner.js
@@ -69,6 +69,7 @@ export default function Scanner() {
     onCardScanned: queue.handleCardScanned,
     onError: (msg) => console.error('Identification error:', msg),
     onTrackerComplete: camera.removeTrackedCard,
+    onTrackerReset: camera.resetTrackedCard,
     videoRef: camera.videoRef,
     canvasRef: camera.canvasRef,
     onVerifyCardRef,
diff --git a/test/setup.js b/test/setup.js
index eb1d192..52bd3b3 100644
--- a/test/setup.js
+++ b/test/setup.js
@@ -1,2 +1,10 @@
 process.env.JWT_SECRET = 'test-secret-for-vitest-only-do-not-use-in-prod';
 process.env.NODE_ENV = 'test';
+
+if (!globalThis.ResizeObserver) {
+  globalThis.ResizeObserver = class ResizeObserver {
+    observe() {}
+    unobserve() {}
+    disconnect() {}
+  };
+}