fix: restore translucent dashboard styling (#6664)

* fix: restore translucent dashboard styling

* fix: restore dashboard widget transparency

* fix: address dashboard review feedback

* fix: apply board opacity to containers

* fix: flatten demo board container

* fix: default board roundness to sm

* fix: restore assistant widget transparency

* Revert "fix: default board roundness to sm"

This reverts commit c235cbdf2b.

* fix: address remaining dashboard review comments

* test: align grid geometry expectations

packages/widgets/src/rssFeed/component.module.scss

@@ -2,11 +2,16 @@
   min-width: 0;
   color: inherit;
   text-decoration: none;
-  transition: background-color 120ms ease;
+  background-color: transparent;
+  border: 1px solid rgb(from var(--mantine-color-secondaryColor-filled) r g b / calc(var(--opacity, 1) * 0.38));
+  transition:
+    background-color 120ms ease,
+    border-color 120ms ease;
 
   &:hover,
   &:focus-visible {
-    background-color: var(--mantine-color-default-hover);
+    background-color: transparent;
+    border-color: rgb(from var(--mantine-color-secondaryColor-filled) r g b / calc(var(--opacity, 1) * 0.62));
   }
 
   &:focus-visible {
@@ -24,3 +29,9 @@
     transition: none;
   }
 }
+
+@media (forced-colors: active) {
+  .entry {
+    border-color: CanvasText;
+  }
+}