feat: add QR code for Revolut payment link

- Install react-qr-code package for QR code generation
- Replace placeholder with actual QR code component in ViewLocationCard
- QR code displays Revolut payment URL with amount, currency, and profile
- Center-aligned QR code (200x200px) in white container with border
- Extract revolutPaymentUrl to single variable for reuse in QR code and link

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

package-lock.json

@@ -34,6 +34,7 @@
         "react": "18.2.0",
         "react-dom": "18.2.0",
         "react-infinite-scroll-component": "^6.1.0",
+        "react-qr-code": "^2.0.18",
         "react-toastify": "^10.0.6",
         "tailwindcss": "^3.4.0",
         "typescript": "5.2.2",
@@ -7025,6 +7026,11 @@
         "node": ">=6"
       }
     },
+    "node_modules/qr.js": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/qr.js/-/qr.js-0.0.0.tgz",
+      "integrity": "sha512-c4iYnWb+k2E+vYpRimHqSu575b1/wKl4XFeJGpFmrJQz5I88v9aY2czh7s0w36srfCM1sXgC/xpoJz5dJfq+OQ=="
+    },
     "node_modules/queue-microtask": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
@@ -7083,6 +7089,18 @@
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
       "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ=="
     },
+    "node_modules/react-qr-code": {
+      "version": "2.0.18",
+      "resolved": "https://registry.npmjs.org/react-qr-code/-/react-qr-code-2.0.18.tgz",
+      "integrity": "sha512-v1Jqz7urLMhkO6jkgJuBYhnqvXagzceg3qJUWayuCK/c6LTIonpWbwxR1f1APGd4xrW/QcQEovNrAojbUz65Tg==",
+      "dependencies": {
+        "prop-types": "^15.8.1",
+        "qr.js": "0.0.0"
+      },
+      "peerDependencies": {
+        "react": "*"
+      }
+    },
     "node_modules/react-toastify": {
       "version": "10.0.6",
       "resolved": "https://registry.npmjs.org/react-toastify/-/react-toastify-10.0.6.tgz",