add: Vercel SpeedInsights

package-lock.json

@@ -10,6 +10,7 @@
       "dependencies": {
         "@tailwindcss/postcss": "^4.1.7",
         "@types/qrcode": "^1.5.5",
+        "@vercel/speed-insights": "^1.2.0",
         "next": "^14.0.0",
         "qrcode": "^1.5.4",
         "react": "^18.2.0",
@@ -1060,6 +1061,41 @@
         "@types/react": "^18.0.0"
       }
     },
+    "node_modules/@vercel/speed-insights": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@vercel/speed-insights/-/speed-insights-1.2.0.tgz",
+      "integrity": "sha512-y9GVzrUJ2xmgtQlzFP2KhVRoCglwfRQgjyfY607aU0hh0Un6d0OUyrJkjuAlsV18qR4zfoFPs/BiIj9YDS6Wzw==",
+      "hasInstallScript": true,
+      "license": "Apache-2.0",
+      "peerDependencies": {
+        "@sveltejs/kit": "^1 || ^2",
+        "next": ">= 13",
+        "react": "^18 || ^19 || ^19.0.0-rc",
+        "svelte": ">= 4",
+        "vue": "^3",
+        "vue-router": "^4"
+      },
+      "peerDependenciesMeta": {
+        "@sveltejs/kit": {
+          "optional": true
+        },
+        "next": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        },
+        "svelte": {
+          "optional": true
+        },
+        "vue": {
+          "optional": true
+        },
+        "vue-router": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/ansi-regex": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.1.0.tgz",