new PO testing

src/app/(main)/po/workbench/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import Box from "@mui/material/Box";
+import Typography from "@mui/material/Typography";
+
+/**
+ * Dev / R&D sandbox for Purchase Order. Not listed in NavigationContent — open via /po/workbench only.
+ * Later: call APIs with clientAuthFetch + NEXT_PUBLIC_API_URL like src/app/(main)/testing/page.tsx.
+ */
+export default function PoWorkbenchPage() {
+  return (
+    <Box sx={{ p: 4 }}>
+      <Typography variant="h5" gutterBottom fontWeight="bold">
+        PO Workbench
+      </Typography>
+      <Typography color="text.secondary">
+        Empty page. This route is intentionally omitted from the navigation bar.
+      </Typography>
+    </Box>
+  );
+}
+

src/components/Breadcrumb/Breadcrumb.tsx

@@ -38,6 +38,7 @@ const pathToLabelMap: { [path: string]: string } = {
   "/do": "Delivery Order",
   "/pickOrder": "Pick Order",
   "/po": "Purchase Order",
+  "/po/workbench": "PO Workbench",
   "/dashboard": "dashboard",
   "/jo": "Job Order",
   "/jo/edit": "Edit Job Order",

src/routes.ts

@@ -3,6 +3,7 @@ export const PRIVATE_ROUTES = [
   "/dashboard",
   "/testing",
   "/jo/testing",
+  "/po/workbench",
   "/ps",
   "/bagPrint",
   "/report",