feat: replace barcode-detector polyfill with local @zxing/browser for cross-browser barcode scanning

- Remove barcode-detector polyfill (made remote CDN calls to download zxing-wasm)
- Use @zxing/library@0.22.0 + @zxing/browser@0.2.0 locally
- Support PDF417, Code128, Code39, Code93, QR, EAN, UPC, ITF formats
- Clean special characters from scanned results before CIP validation
- Fix video ref timing issue with waitForVideo loop

frontend/package.json

@@ -18,7 +18,8 @@
     "@grafana/faro-transport-otlp-http": "^1.7.0",
     "@grafana/faro-web-sdk": "^1.7.0",
     "@grafana/faro-web-tracing": "^1.7.0",
-    "barcode-detector": "^3.2.0",
+    "@zxing/browser": "^0.2.0",
+    "@zxing/library": "^0.22.0",
     "leaflet": "^1.9.4",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",