FEAT-12a: ForSale scaffolding — status+ForSale, abgabe strings, /abgabe route+nav, sale-ad API stub, detail action, jszip

gerbil-manager-web/src/pages/AbgabePage.tsx

@@ -0,0 +1,11 @@
+import { de } from '../strings/de'
+
+export default function AbgabePage() {
+  // Fleshed out in the next FEAT-12a increments (grouping + listing composer + export).
+  return (
+    <section className="page">
+      <h2>{de.pages.abgabe.title}</h2>
+      <p className="muted">{de.pages.abgabe.subtitle}</p>
+    </section>
+  )
+}