fix: only reorganize items already in the Imported Furniture section

organizeCatalogAll no longer pulls every items_base row into the catalog.
It now touches only items whose catalog entry lives on a page under the
Imported Furniture parent (re-homing/re-pricing onto line/category
sub-pages). Items are never newly added. Button renamed to 'Organiseer
import'.

src/components/admin/studio/studio-client.tsx

@@ -881,14 +881,14 @@ export function StudioClient({
 					className="gap-1.5"
 					disabled={organizing || !!batchProgress}
 					onClick={organizeAll}
-					title="Alle meubels automatisch in catalogus-pagina's ordenen (pagina's worden aangemaakt indien nodig)"
+					title="Alle meubels uit de Import-sectie automatisch ordenen in catalogus-pagina's (pagina's worden aangemaakt indien nodig)"
 				>
 					{organizing ? (
 						<Loader2 size={14} className="animate-spin" />
 					) : (
 						<WandSparkles size={14} />
 					)}
-					Organiseer alles
+					Organiseer import
 				</Button>
 
 				{selectedNonImported > 0 && (