style(app): mobile-native layout with safe areas and grouped list

index.html

@@ -7,7 +7,7 @@
       name="description"
       content="Application web SPA PWA installable et utilisable hors connexion."
     />
-    <meta name="theme-color" content="#0f172a" />
+    <meta name="theme-color" content="#f8fafc" />
     <meta name="color-scheme" content="dark light" />
     <meta name="robots" content="index, follow" />
     <title>new</title>