release: v1.2.1 — login captcha, docs site, and bug fixes

Add slider captcha for web login, VitePress documentation on GitHub Pages,
and fixes for gallery delete refresh, pagination jump, and copy-format persistence.

app/pages/stats.vue

@@ -251,6 +251,10 @@ async function confirmDelete() {
         color: 'success'
       })
       await refreshStats()
+      await reloadGallery()
+      if (items.value.length === 0 && galleryPage.value > 1) {
+        await goToPage(galleryPage.value - 1)
+      }
     }
 
     if (failed.length) {