feat(admin): archive tabs for business inquiries and reviews

Inquiries: completed and rejected inquiries move to an "Archiv" tab;
resetting the status brings them back. Reviews: new "Ablehnen" action
(Review.rejectedAt) instead of only deleting; the archive shows decided
reviews in two columns, accepted and rejected, and either decision can
be reversed. Pending counters in the sidebar and dashboard exclude
rejected reviews, and the product page tells the author their review was
not published instead of "still being checked".

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

src/app/admin/actions/reviews.ts

@@ -12,7 +12,7 @@ export async function approveReviewAction(formData: FormData): Promise<void> {
 
   const review = await prisma.review.update({
     where: { id },
-    data: { isApproved: true },
+    data: { isApproved: true, rejectedAt: null },
     select: { product: { select: { slug: true, name: true } } },
   });
 
@@ -28,6 +28,33 @@ export async function approveReviewAction(formData: FormData): Promise<void> {
   await setFlash("success", "Bewertung freigegeben — sie ist jetzt im Shop sichtbar.");
 }
 
+/**
+ * Lehnt eine Bewertung ab, statt sie zu loeschen: sie verschwindet aus dem
+ * Shop (falls sie dort war) und steht im Archiv unter "Abgelehnt", damit die
+ * Entscheidung nachvollziehbar bleibt und sich rueckgaengig machen laesst.
+ */
+export async function rejectReviewAction(formData: FormData): Promise<void> {
+  const admin = await requireAdmin();
+  const id = str(formData, "id");
+
+  const review = await prisma.review.update({
+    where: { id },
+    data: { isApproved: false, rejectedAt: new Date() },
+    select: { product: { select: { slug: true, name: true } } },
+  });
+
+  await logAdminAction(admin, {
+    action: "review.reject",
+    entityType: "Review",
+    entityId: id,
+    detail: review.product.name,
+  });
+
+  revalidatePath("/admin/bewertungen");
+  revalidatePath(`/honig/${review.product.slug}`);
+  await setFlash("success", "Bewertung abgelehnt — sie steht jetzt im Archiv.");
+}
+
 export async function deleteReviewAction(formData: FormData): Promise<void> {
   const admin = await requireAdmin();
   const id = str(formData, "id");