refactor(mobile): more look and feel work

lstMobile/src/hooks/useScannerStore.ts

@@ -0,0 +1,31 @@
+import { create } from "zustand";
+
+type LastScan = {
+	action?: string;
+	type?: "success" | "error" | string;
+	prompt?: string;
+	message?: string;
+	timestamp?: number;
+};
+
+type ScannerStore = {
+	lastScan: LastScan | null;
+	setLastScan: (scan: LastScan | null) => void;
+	clearLastScan: () => void;
+};
+
+export const useScannerStore = create<ScannerStore>((set) => ({
+	lastScan: null,
+
+	setLastScan: (scan) =>
+		set({
+			lastScan: scan
+				? {
+						...scan,
+						timestamp: Date.now(),
+					}
+				: null,
+		}),
+
+	clearLastScan: () => set({ lastScan: null }),
+}));