fix(ui): contain mobile article fields and stabilize history checks

e2e/ui/fixtures/furniture-jobs-harness.tsx

@@ -18,10 +18,18 @@ export function FurnitureJobsHarness() {
 			>
 				Refresh twice
 			</button>
-			<button type="button" onClick={() => void history.navigate("next")}>
+			<button
+				type="button"
+				disabled={history.loading || !history.nextCursor}
+				onClick={() => void history.navigate("next")}
+			>
 				Next page
 			</button>
-			<button type="button" onClick={() => void history.navigate("previous")}>
+			<button
+				type="button"
+				disabled={history.loading || history.page === 1}
+				onClick={() => void history.navigate("previous")}
+			>
 				Previous page
 			</button>
 			<output aria-label="Page">{history.page}</output>