Add public curator notes and U-shaped hall wall hang.

Paintings get editable curator notes with brass plates in the 3D hall, and visit order now uses the far/end wall between left and right.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/pages/HomePage.tsx

@@ -444,6 +444,58 @@ export default function HomePage() {
     []
   );
 
+  const handleCuratorNotesUpdated = useCallback((paintingId: number, curatorNotes: string) => {
+    const patch: Partial<Painting> = { curator_notes: curatorNotes };
+
+    setView((current) => {
+      if (current.type !== 'painting' || current.paintingId !== paintingId) return current;
+      let returnTo = current.returnTo;
+      if (returnTo.type === 'gallery') {
+        returnTo = {
+          ...returnTo,
+          data: patchPaintingInArtistDetail(returnTo.data, paintingId, patch),
+        };
+      }
+      if (returnTo.type === 'movement-gallery') {
+        returnTo = {
+          ...returnTo,
+          data: patchPaintingInMovementDetail(returnTo.data, paintingId, patch),
+        };
+      }
+      if (returnTo.type === 'tour-gallery') {
+        returnTo = {
+          ...returnTo,
+          data: patchPaintingInTourDetail(returnTo.data, paintingId, patch),
+        };
+      }
+      return {
+        ...current,
+        data: {
+          ...current.data,
+          painting: { ...current.data.painting, ...patch },
+        },
+        returnTo,
+      };
+    });
+
+    setDetailArtistPaintings((list) =>
+      list.map((p) => (p.id === paintingId ? { ...p, ...patch } : p))
+    );
+
+    setGallerySession((session) => {
+      if (session?.kind === 'artist') {
+        return { ...session, data: patchPaintingInArtistDetail(session.data, paintingId, patch) };
+      }
+      if (session?.kind === 'movement') {
+        return { ...session, data: patchPaintingInMovementDetail(session.data, paintingId, patch) };
+      }
+      if (session?.kind === 'tour') {
+        return { ...session, data: patchPaintingInTourDetail(session.data, paintingId, patch) };
+      }
+      return session;
+    });
+  }, []);
+
   const applyArtistPatch = useCallback((artistId: number, patch: Partial<Artist>) => {
     setArtists((list) => list.map((a) => (a.id === artistId ? { ...a, ...patch } : a)));
 
@@ -900,11 +952,13 @@ export default function HomePage() {
               setView({ type: 'bio', artistId: artistData.artist.id, data: artistData, returnTo: view });
             }}
             onInfluenceArtistClick={handleArtistClick}
+            isCurator={isCurator}
             debugMode={effectiveDebugMode}
             debugShowMore={debugShowMore && isCurator}
             onPaintingImageFixed={handlePaintingImageFixed}
             onPaintingCheckupFlagsUpdated={handlePaintingCheckupFlagsUpdated}
             onPaintingRemoved={handlePaintingRemoved}
+            onCuratorNotesUpdated={handleCuratorNotesUpdated}
           />
         </div>
       )}