fix(configurator): hide brand-colors card in Advanced mode (filter bypass)

The Brand & Status Colors section (Colors domain) and the Essentials
card (other domains) were rendered unconditionally in Advanced mode,
bypassing the Modified-only and Internal filters. When a user checked
either filter, those rows stayed on screen, making it appear as though
the filters had no effect on most of the visible tokens.

Both sections are now gated behind `!advanced`. The Advanced full
catalogue already contains every token (brand colors included), so
no information is lost, and filters now work as expected on every
visible row.

https://claude.ai/code/session_01MAgtQ7JY16X2TqZZyGfkuu

Author: claude

configurator/src/components/DomainPanel.svelte

@@ -228,8 +228,11 @@
         />
       {/if}
 
-      <!-- Essentials (Basic mode only) -->
-      {#if domain.brandColors}
+      <!-- Basic-mode curated surfaces (brand colors, basic groups, essentials).
+           All three are hidden in Advanced mode — the full filtered catalogue
+           below covers every token, so duplicating them here would bypass the
+           Modified-only and Internal filters and confuse the user. -->
+      {#if domain.brandColors && !advanced}
         <!-- Brand colors domain: light/dark pair rows for every brand color -->
         <section class="cfg-card panel__card">
           {@render cardHead(