fix(scanner): satisfy react-hooks/immutability and jsdom ResizeObserver in tests

- Move disambiguation-cancel tracker reset into useCameraScanner's new
  resetTrackedCard(cardId) (immutable map + setTrackedCards), wired via
  onTrackerReset — the identification hook no longer mutates state-derived
  objects, clearing the blocking react-hooks/immutability lint error.
- Stub ResizeObserver in test/setup.js so ScannerCamera's workstation
  tests render under jsdom.
- Drop unused eslint-disable directive in CollectionsPageView.

npm run lint: 0 problems; vitest 231/231.

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';

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,

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;

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,

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() {}
+  };
+}