feat:

-Add UI (Health bars, Resources UI, HUD Interface, Weapon U, Zoombie Invasion progress Indicator)

-Refactor code structure for improved readability and maintainability

src/css/main.css

@@ -38,8 +38,11 @@ html {
 }
 
 canvas {
-  width: 100%;
-  height: 100%;
+  /* !important beats the renderer's inline px size so the canvas always fills
+     the layout viewport — needed when we lock the viewport to a 360px min width
+     and let the browser scale the whole page (canvas + HUD) down together. */
+  width: 100% !important;
+  height: 100% !important;
 }
 
 #debug_label {