refactor(ui): restrict external asset overrides to development mode

assets/icons/co-sign.svg

@@ -1,12 +1,6 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48" width="48" height="48">
-  <!-- Folha secundária -->
-  <path d="M 6 10 L 26 10 L 32 16 L 32 40 L 6 40 Z" fill="#ffffff" stroke="#1976d2" stroke-width="2.2" stroke-linejoin="round"/>
-  <!-- Folha primária -->
-  <path d="M 16 4 L 36 4 L 42 10 L 42 34 L 16 34 Z" fill="#e3f2fd" stroke="#0288d1" stroke-width="2.2" stroke-linejoin="round"/>
-  <path d="M 36 4 L 36 10 L 42 10 Z" fill="#bbdefb" stroke="#0288d1" stroke-width="1.8"/>
-  <!-- Ícone de dois usuários / parceiros de assinatura -->
-  <circle cx="16" cy="24" r="4" fill="#0d47a1"/>
-  <path d="M 10 36 C 10 31 13 30 16 30 C 19 30 22 31 22 36 Z" fill="#0d47a1"/>
-  <circle cx="26" cy="22" r="3.5" fill="#0288d1"/>
-  <path d="M 21 34 C 21 30 24 29 26 29 C 29 29 32 30 32 34 Z" fill="#0288d1"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <path d="M 13 3.5 H 5 C 4.4 3.5 4 3.9 4 4.5 V 20.5 C 4 21.1 4.4 21.5 5 21.5 H 17 C 17.6 21.5 18 21.1 18 20.5 V 13" 
+        fill="none" stroke="currentColor" stroke-width="2" stroke-linejoin="round"/>
+  <path d="M 12 18 C 14 18 16 17 18 15" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round"/>
+  <path d="M 18.5 3.5 L 21 6 L 14 13 L 11.5 13.5 L 12 11 Z" fill="none" stroke="#0288d1" stroke-width="1.8" stroke-linejoin="round"/>
 </svg>