fix(theme): align reference layouts and restore passing contracts

Align homepage and category discovery, modern widgets, admin controls, quotes, and comments with the reference theme. Remove superseded paths and add rendering and behavior coverage. Update stale asset and finance contracts; all 760 Node tests and 139 widget assertions pass.

assets/css/frontend/base.css

@@ -49,6 +49,12 @@ a[href] {
   font-weight: 400;
 }
 
+/* FA5's later .fa rule sets 900; keep outline glyphs at their regular weight. */
+.fa.far {
+  font-family: "Font Awesome 5 Free";
+  font-weight: 400;
+}
+
 .skip-link {
   position: absolute;
   left: 16px;