feat(kegiatan-desa): add full CRUD frontend + public detail page - bump to 0.1.47

- API: add GET /:id endpoint (findUnique) for KegiatanDesa
- Admin CMS: add pages for list-kegiatan-desa and kategori-kegiatan-desa (list, create, detail, edit)
- Public: add detail page at /desa/kegiatan-desa/[kategori]/[id]
- Refactor: move KegiatanCard to _com to fix Next.js page export constraint
- Nav: register kegiatan-desa in navbar and admin page list

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "desa-darmasaba",
-  "version": "0.1.46",
+  "version": "0.1.47",
   "private": true,
   "scripts": {
     "dev": "next dev",