diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index aac3b93..6871c1b 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -29,22 +29,28 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
+
       - name: Setup Pages
         uses: actions/configure-pages@v5
+
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
-          node-version: '22'
+          node-version: '24'
+
       - name: Install dependencies
         run: npm ci
+
       - name: Build app
         run: npm run build
+
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:
           # Upload the build output
           path: 'dist'
+
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..4bdf9a7
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,23 @@
+name: Check lint, format & types
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: '24'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
diff --git a/package-lock.json b/package-lock.json
index cc3fadb..09eed6a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -52,7 +52,6 @@
       "integrity": "sha512-CGOfOJqWjg2qW/Mb6zNsDm+u5vFQ8DxXfbM09z69p5Z6+mE1ikP2jUXw+j42Pf1XTYED2Rni5f95npYeuwMDQA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.29.0",
         "@babel/generator": "^7.29.0",
@@ -1512,7 +1511,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
@@ -1965,7 +1963,6 @@
       "resolved": "https://registry.npmjs.org/preact/-/preact-10.28.4.tgz",
       "integrity": "sha512-uKFfOHWuSNpRFVTnljsCluEFq57OKT+0QdOiQo8XWnQ/pSvg7OpX5eNOejELXJMWy+BwM2nobz0FkvzmnpCNsQ==",
       "license": "MIT",
-      "peer": true,
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/preact"
@@ -1986,7 +1983,6 @@
       "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-6.6.6.tgz",
       "integrity": "sha512-EfqZJytnjJldV+YaaqhthU2oXsEf5e+6rDv957p+zxAvNfFLQOPfvBOTncscQ+akzu6Wrl7s3Pa0LjUQmWJsGQ==",
       "license": "MIT",
-      "peer": true,
       "peerDependencies": {
         "preact": ">=10 || >= 11.0.0-0"
       }
@@ -1997,7 +1993,6 @@
       "integrity": "sha512-2oMpl67a3zCH9H79LeMcbDhXW/UmWG/y2zuqnF2jQq5uq9TbM9TVyXvA4+t+ne2IIkBdrLpAaRQAvo7YI/Yyeg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/estree": "1.0.8"
       },
@@ -2155,7 +2150,6 @@
       "integrity": "sha512-w+N7Hifpc3gRjZ63vYBXA56dvvRlNWRczTdmCBBa+CotUzAPf5b7YMdMR/8CQoeYE5LX3W4wj6RYTgonm1b9DA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "esbuild": "^0.27.0",
         "fdir": "^6.5.0",
diff --git a/package.json b/package.json
index 8321f41..424a8e3 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "vite build",
     "preview": "vite preview",
     "lint": "biome check",
-    "format": "biome format"
+    "format": "biome format",
+    "typecheck": "tsc --noEmit",
+    "test": "npm run lint && npm run typecheck"
   },
   "keywords": [],
   "author": "",
diff --git a/src/i18n/context.tsx b/src/i18n/context.tsx
index ecd0f6b..4a8cfa7 100644
--- a/src/i18n/context.tsx
+++ b/src/i18n/context.tsx
@@ -25,20 +25,12 @@ const I18nContext = createContext<I18nContextValue | null>(null)
  * Each locale is a separate chunk loaded on demand
  */
 async function loadLocale(locale: Locale): Promise<Translations> {
-  switch (locale) {
-    case 'es':
-      return (await import('./locales/es')).default
-    case 'fr':
-      return (await import('./locales/fr')).default
-    case 'de':
-      return (await import('./locales/de')).default
-    case 'sv':
-      return (await import('./locales/sv')).default
-    case 'pt':
-      return (await import('./locales/pt')).default
-    default:
-      return en
-  }
+  if (locale === DEFAULT_LOCALE) return en
+  if (!SUPPORTED_LOCALES.includes(locale)) return en
+  const module: { default: Translations } = await import(
+    `./locales/${locale}.ts`
+  )
+  return module.default
 }
 
 /**
diff --git a/src/i18n/locales/pt.ts b/src/i18n/locales/pt.ts
index 398ce26..5a7c8d7 100644
--- a/src/i18n/locales/pt.ts
+++ b/src/i18n/locales/pt.ts
@@ -64,4 +64,4 @@ const pt: Translations = {
   toggleTheme: 'Alternar tema',
 }
 
-export default pt
\ No newline at end of file
+export default pt