fix: restore admin content scrolling

frontend/src/admin/AdminPanel.svelte

@@ -26,7 +26,6 @@
   import { onMount, setContext } from "svelte";
   import { fade } from "svelte/transition";
   import { Select } from "$components/ui/primitives.js";
-  import { ScrollArea } from "$components/ui/index.js";
   import { AdminBadge, AdminButton } from "$components/patterns/admin/index.js";
 
   import BrandMark from "$lib/webapp/BrandMark.svelte";
@@ -761,7 +760,6 @@
     </header>
 
     <main class="admin-main">
-      <ScrollArea class="admin-main-scroll" maxHeight="none">
       {#key active}
         <div class="admin-section-stage" in:fade={sectionFade} out:fade={sectionFade}>
           {#if active === "stats"}
@@ -844,7 +842,6 @@
           {/if}
         </div>
       {/key}
-      </ScrollArea>
     </main>
   </section>
 </div>

frontend/src/styles/admin.css

@@ -348,7 +348,7 @@
   min-height: 0;
   -webkit-overflow-scrolling: touch;
   overscroll-behavior: contain;
-  overflow: hidden;
+  overflow-y: auto;
   overflow-x: hidden;
   padding: 24px 28px 36px;
   display: flex;
@@ -359,14 +359,7 @@
 /* Flex children must NOT shrink — otherwise they collapse to fit the
    container and the main never overflows, breaking scroll. */
 
-.admin-main-scroll {
-  flex: 1 1 auto;
-  min-height: 0;
-  max-height: none;
-}
-
-.admin-main > *,
-.admin-main-scroll > .scroll-area__viewport > * {
+.admin-main > * {
   flex-shrink: 0;
 }