novo fix

frontend/src/routes/AtlasPage.tsx

@@ -1,4 +1,5 @@
-import { useAllStructures } from "../hooks/useStructures.js";
+import { useSystemStructures } from "../hooks/useSystemStructures.js";
+import { useAtlasStore } from "../store/useAtlasStore.js";
 import { Scene } from "../components/viewer/Scene.js";
 import { LayerToggle } from "../components/LayerToggle.js";
 import { ClippingControls } from "../components/ClippingControls.js";
@@ -6,7 +7,8 @@ import { SearchNav } from "../components/SearchNav.js";
 import { StructureInfoPanel } from "../components/StructureInfoPanel.js";
 
 export default function AtlasPage() {
-  const { structures, bySlug } = useAllStructures();
+  const visibleSystems = useAtlasStore((s) => s.visibleSystems);
+  const { bySlug } = useSystemStructures(visibleSystems);
 
   return (
     <div className="h-full grid grid-cols-[280px_1fr_320px]">
@@ -14,7 +16,7 @@ export default function AtlasPage() {
         <LayerToggle />
         <ClippingControls />
         <div className="flex-1 min-h-0 mt-4">
-          <SearchNav structures={structures} />
+          <SearchNav />
         </div>
       </aside>
 

frontend/src/routes/QuizPage.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useRef, useState } from "react";
 import { api, type Structure, type QuizCard } from "../lib/api.js";
-import { useAllStructures } from "../hooks/useStructures.js";
+import { useSystemStructures } from "../hooks/useSystemStructures.js";
 import { Scene } from "../components/viewer/Scene.js";
 import { LayerToggle } from "../components/LayerToggle.js";
 import { useAtlasStore } from "../store/useAtlasStore.js";
@@ -8,7 +8,8 @@ import { useAtlasStore } from "../store/useAtlasStore.js";
 type Deck = (Structure & { quizCard: QuizCard | null })[];
 
 export default function QuizPage() {
-  const { bySlug } = useAllStructures();
+  const visibleSystems = useAtlasStore((s) => s.visibleSystems);
+  const { bySlug } = useSystemStructures(visibleSystems);
   const [deck, setDeck] = useState<Deck>([]);
   const [index, setIndex] = useState(0);
   const [feedback, setFeedback] = useState<"correct" | "wrong" | null>(null);