diff --git a/website/public/debug/lang/colon.html b/website/public/debug/lang/colon.html
index c836a7d..8bfa303 100644
--- a/website/public/debug/lang/colon.html
+++ b/website/public/debug/lang/colon.html
@@ -1,15 +1,15 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>OpenFreeMap Debug</title>
     <script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
     <link href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css" rel="stylesheet" />
-</head>
-<body>
+  </head>
+  <body>
     <div id="map" class="w-full h-screen"></div>
     <script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
     <script src="colon.js"></script>
-</body>
+  </body>
 </html>
diff --git a/website/public/debug/lang/mix.html b/website/public/debug/lang/mix.html
index 2680a69..008c12f 100644
--- a/website/public/debug/lang/mix.html
+++ b/website/public/debug/lang/mix.html
@@ -1,106 +1,97 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>OpenFreeMap Debug</title>
     <script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
     <link href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css" rel="stylesheet" />
-</head>
-<body class="flex flex-col h-screen">
+  </head>
+  <body class="flex flex-col h-screen">
     <!-- UI Panel -->
     <div class="bg-gray-900 border-b border-gray-700 shadow-md">
-        <div class="max-w-7xl mx-auto px-4 py-2">
-            <div class="flex items-center gap-3">
-                <div class="flex-1">
-                    <label for="line1" class="block text-xs font-medium text-gray-400 mb-1">
-                        Line 1
-                    </label>
-                    <input
-                        type="text"
-                        id="line1"
-                        class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono"
-                    />
-                    <input
-                        type="text"
-                        id="line1-expr"
-                        readonly
-                        class="w-full px-3 py-1 text-xs border border-gray-700 rounded bg-gray-950 text-gray-500 font-mono mt-1"
+      <div class="max-w-7xl mx-auto px-4 py-2">
+        <div class="flex items-center gap-3">
+          <div class="flex-1">
+            <label for="line1" class="block text-xs font-medium text-gray-400 mb-1"> Line 1 </label>
+            <input
+              type="text"
+              id="line1"
+              class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono"
+            />
+            <input
+              type="text"
+              id="line1-expr"
+              readonly
+              class="w-full px-3 py-1 text-xs border border-gray-700 rounded bg-gray-900 text-gray-400 font-mono mt-1 cursor-default focus:outline-none focus:ring-0 focus:border-gray-700"
+            />
+          </div>
 
-                    />
-                </div>
+          <div class="flex-1">
+            <label for="line2" class="block text-xs font-medium text-gray-400 mb-1"> Line 2 </label>
+            <input
+              type="text"
+              id="line2"
+              class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono"
+            />
+            <input
+              type="text"
+              id="line2-expr"
+              readonly
+              class="w-full px-3 py-1 text-xs border border-gray-700 rounded bg-gray-900 text-gray-400 font-mono mt-1 cursor-default focus:outline-none focus:ring-0 focus:border-gray-700"
+            />
+          </div>
 
-                <div class="flex-1">
-                    <label for="line2" class="block text-xs font-medium text-gray-400 mb-1">
-                        Line 2
-                    </label>
-                    <input
-                        type="text"
-                        id="line2"
-                        class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono"
-                    />
-                    <input
-                        type="text"
-                        id="line2-expr"
-                        readonly
-                        class="w-full px-3 py-1 text-xs border border-gray-700 rounded bg-gray-950 text-gray-500 font-mono mt-1"
+          <div class="w-24">
+            <label for="lang" class="block text-xs font-medium text-gray-400 mb-1"> Lang </label>
+            <input
+              type="text"
+              id="lang"
+              class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono text-center"
+              maxlength="5"
+            />
+          </div>
 
-                    />
-                </div>
-
-                <div class="w-24">
-                    <label for="lang" class="block text-xs font-medium text-gray-400 mb-1">
-                        Lang
-                    </label>
-                    <input
-                        type="text"
-                        id="lang"
-                        class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono text-center"
-                        maxlength="5"
-                    />
-                </div>
-
-                <div class="pt-5 flex gap-2">
-
-                    <button
-                        id="shareBtn"
-                        class="px-4 py-1.5 text-sm font-medium text-white bg-blue-600 rounded hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 focus:ring-offset-gray-900 transition-all"
-                    >
-                        Share
-                    </button>
-                    <button
-                        id="resetBtn"
-                        class="px-4 py-1.5 text-sm font-medium text-white bg-gray-700 rounded hover:bg-gray-600 focus:outline-none focus:ring-2 focus:ring-gray-500 focus:ring-offset-2 focus:ring-offset-gray-900 transition-all"
-                    >
-                        Reset
-                    </button>
-                </div>
-            </div>
+          <div class="pt-5 flex gap-2">
+            <button
+              id="shareBtn"
+              class="px-4 py-1.5 text-sm font-medium text-white bg-blue-600 rounded hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 focus:ring-offset-gray-900 transition-all"
+            >
+              Share
+            </button>
+            <button
+              id="resetBtn"
+              class="px-4 py-1.5 text-sm font-medium text-white bg-gray-700 rounded hover:bg-gray-600 focus:outline-none focus:ring-2 focus:ring-gray-500 focus:ring-offset-2 focus:ring-offset-gray-900 transition-all"
+            >
+              Reset
+            </button>
+          </div>
         </div>
+      </div>
     </div>
 
     <div id="map" class="flex-1"></div>
 
     <!-- Modal Dialog -->
     <div id="shareModal" class="hidden fixed inset-0 z-50">
-        <div id="modalOverlay" class="fixed inset-0 bg-black/50"></div>
-        <div class="fixed inset-0 flex items-center justify-center p-4">
-            <div class="relative bg-gray-800 rounded-lg p-8 max-w-md shadow-2xl">
-                <p class="text-gray-300 text-center leading-relaxed mb-6">
-                    Your settings have been saved to the URL.<br>
-                    Copy the address bar to share this map.
-                </p>
-                <button
-                    id="closeModalBtn"
-                    class="w-full py-2.5 text-sm text-white bg-gray-700 rounded hover:bg-gray-600 transition-all"
-                >
-                    Close
-                </button>
-            </div>
+      <div id="modalOverlay" class="fixed inset-0 bg-black/50"></div>
+      <div class="fixed inset-0 flex items-center justify-center p-4">
+        <div class="relative bg-gray-800 rounded-lg p-8 max-w-md shadow-2xl">
+          <p class="text-gray-300 text-center leading-relaxed mb-6">
+            Your settings have been saved to the URL.<br />
+            Copy the address bar to share this map.
+          </p>
+          <button
+            id="closeModalBtn"
+            class="w-full py-2.5 text-sm text-white bg-gray-700 rounded hover:bg-gray-600 transition-all"
+          >
+            Close
+          </button>
         </div>
+      </div>
     </div>
 
     <script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
     <script src="mix.js"></script>
-</body>
-</html>
\ No newline at end of file
+  </body>
+</html>
diff --git a/website/public/debug/lang/mix.js b/website/public/debug/lang/mix.js
index 6da0edd..ed98463 100644
--- a/website/public/debug/lang/mix.js
+++ b/website/public/debug/lang/mix.js
@@ -63,7 +63,7 @@ function initializeModal() {
     modal.classList.add('hidden')
   })
 
-  document.addEventListener('keydown', (e) => {
+  document.addEventListener('keydown', e => {
     if (e.key === 'Escape' && !modal.classList.contains('hidden')) {
       modal.classList.add('hidden')
     }
@@ -190,8 +190,8 @@ function buildFieldAccessor(config, langCode) {
   const parts = []
   const fields = config
     .split(',')
-    .map((f) => f.trim())
-    .filter((f) => f)
+    .map(f => f.trim())
+    .filter(f => f)
 
   for (const field of fields) {
     if (field === 'underscore') {
@@ -210,4 +210,4 @@ function buildFieldAccessor(config, langCode) {
   }
 
   return parts.length > 0 ? ['coalesce', ...parts] : null
-}
\ No newline at end of file
+}
diff --git a/website/public/debug/lang/params.html b/website/public/debug/lang/params.html
index 29c0763..3ac5430 100644
--- a/website/public/debug/lang/params.html
+++ b/website/public/debug/lang/params.html
@@ -1,15 +1,15 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>OpenFreeMap Debug</title>
     <script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
     <link href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css" rel="stylesheet" />
-</head>
-<body>
+  </head>
+  <body>
     <div id="map" class="w-full h-screen"></div>
     <script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
     <script src="params.js"></script>
-</body>
+  </body>
 </html>
diff --git a/website/public/debug/lang/params.js b/website/public/debug/lang/params.js
index 673f13f..255091b 100644
--- a/website/public/debug/lang/params.js
+++ b/website/public/debug/lang/params.js
@@ -52,23 +52,23 @@ function applyLanguage() {
 }
 
 map.on('load', () => {
-  let langCode = getLanguageParam()
-  
+  const langCode = getLanguageParam()
+
   // Alert the URL param value on first load
   alert(
     `Language parameter: ${langCode || 'not set (defaulting to en)'}\n\n` +
-    'To change the map language, modify the ?lang= parameter in the URL.\n' +
-    'Labels will be RED when different.\n' +
-    'name_xx on line 1, name:xx on line 2'
+      'To change the map language, modify the ?lang= parameter in the URL.\n' +
+      'Labels will be RED when different.\n' +
+      'name_xx on line 1, name:xx on line 2',
   )
-  
+
   // Add default param if not present
   if (!langCode) {
     const url = new URL(window.location)
     url.searchParams.set('lang', 'en')
     window.history.replaceState({}, '', url)
   }
-  
+
   applyLanguage()
 })
 
diff --git a/website/public/debug/lang/switch.html b/website/public/debug/lang/switch.html
index 20e7fbb..d9798b2 100644
--- a/website/public/debug/lang/switch.html
+++ b/website/public/debug/lang/switch.html
@@ -1,15 +1,15 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>OpenFreeMap Debug</title>
     <script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
     <link href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css" rel="stylesheet" />
-</head>
-<body>
+  </head>
+  <body>
     <div id="map" class="w-full h-screen"></div>
     <script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
     <script src="switch.js"></script>
-</body>
+  </body>
 </html>
diff --git a/website/public/debug/terrain/terrain.js b/website/public/debug/terrain/terrain.js
index dbeda94..f25ee75 100644
--- a/website/public/debug/terrain/terrain.js
+++ b/website/public/debug/terrain/terrain.js
@@ -23,4 +23,4 @@ const map = new maplibregl.Map({
 
 map.on('load', () => {
   console.log('Terrain map loaded')
-})
\ No newline at end of file
+})
