fix: web client styling and nav updates (#21)

## Summary

- Aligns the client with the NHCarrigan style guide (witch palette, Griffy/Kalam fonts, shared stylesheet)
- Fixes sanctions page to sort by case number descending
- Updates all Hikari image URLs to `cdn.nhcarrigan.com/hikari.png`
- Adds Support link to nav (https://support.nhcarrigan.com)
- Fixes Chat nav link to point to https://chat.nhcarrigan.com

✨ This issue was created with help from Hikari~ 🌸

Reviewed-on: #21
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

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>