diff --git a/frontend/registration.html b/frontend/registration.html
index 047a3b79..beb9e865 100644
--- a/frontend/registration.html
+++ b/frontend/registration.html
@@ -191,7 +191,7 @@ <h1 class="page-title">Join the Leaderboard</h1>
         const target = document.getElementById("welcome-message");
         const lines = [
           {
-            text: `> User record authenticated: ${name}`,
+            text: "> User record authenticated: ",
             color: "var(--green-dim)",
           },
           { text: `> Status: RANK_SYNC_PENDING`, color: "var(--amber)" },
@@ -215,7 +215,13 @@ <h1 class="page-title">Join the Leaderboard</h1>
           const div = document.createElement("div");
 
           if (lineData.text.includes("authenticated")) {
-            div.innerHTML = `> User record authenticated: <span style="color: var(--green)">${name}</span>`;
+            div.appendChild(
+              document.createTextNode("> User record authenticated: "),
+            );
+            const span = document.createElement("span");
+            span.style.color = "var(--green)";
+            span.textContent = name;
+            div.appendChild(span);
           } else {
             div.innerText = lineData.text;
             if (lineData.color) div.style.color = lineData.color;
diff --git a/package-lock.json b/package-lock.json
index 0dfeba9c..cb51fe5f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,9 @@
         "axios": "^1.10.0",
         "cors": "^2.8.5",
         "express": "^5.1.0"
+      },
+      "devDependencies": {
+        "prettier": "^3.8.3"
       }
     },
     "node_modules/accepts": {
@@ -756,6 +759,22 @@
         "url": "https://opencollective.com/express"
       }
     },
+    "node_modules/prettier": {
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.3.tgz",
+      "integrity": "sha512-7igPTM53cGHMW8xWuVTydi2KO233VFiTNyF5hLJqpilHfmn8C8gPf+PS7dUT64YcXFbiMGZxS9pCSxL/Dxm/Jw==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
diff --git a/package.json b/package.json
index f27df097..73bfb2c8 100644
--- a/package.json
+++ b/package.json
@@ -22,5 +22,8 @@
     "axios": "^1.10.0",
     "cors": "^2.8.5",
     "express": "^5.1.0"
+  },
+  "devDependencies": {
+    "prettier": "^3.8.3"
   }
 }