Add shared Manifest UI for delivery, quote, and order.

Wire quote/order API clients and routes, then unify list/create/edit behind ManifestList/Form tiles so Lieferungen and Auftrag share one stack.

src/components/manifest/withManifestId.jsx

@@ -0,0 +1,20 @@
+import { useParams } from 'react-router-dom';
+
+/**
+ * Router glue only: maps a path param to `docId` (integer or null).
+ * Function component is intentional — useParams has no class equivalent.
+ */
+export function withManifestId(paramName, Wrapped) {
+  function ManifestIdWrapper(props) {
+    const params = useParams();
+    const raw = params[paramName];
+    const docId = Number(raw);
+    return (
+      <Wrapped
+        {...props}
+        docId={Number.isInteger(docId) ? docId : null}
+      />
+    );
+  }
+  return ManifestIdWrapper;
+}