style: align client with NHCarrigan style guide

- Remove shared stylesheet stripping; let headers/index.js apply the
  witch palette, Griffy/Kalam fonts, and mystical backgrounds
- Replace custom CSS vars and Vampyr font with style guide tokens
- Update all component CSS to use witch palette variables
- Fix sanctions sort to descending by case number
- Update Hikari image URLs to cdn.nhcarrigan.com/hikari.png

client/src/index.html

@@ -15,10 +15,4 @@
     <app-root></app-root>
   </body>
   <script src="https://cdn.nhcarrigan.com/headers/index.js"></script>
-  <script>
-    const styleElement = document.getElementById("nhcarrigan-global-styles");
-    if (styleElement) {
-      styleElement.remove();
-    }
-  </script>
 </html>