Can we use `.gjs` for route templates?

My SCSS isn’t loading. Any ideas? I set up my files per the chat plugin in core.

I have in plugins.rb:

register_asset "stylesheets/common/index.scss"

In assets/stylesheets/common/index.scss:

@import "common";

In assets/stylesheets/common/common.scss:

body:has(#print-root) {
  header,
  .avatar,
  .sidebar-wrapper {
    all: unset;  // all: unset might be a bit too aggressive
    display: none !important;
  }
}