Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/photos/page.tsx

@@ -16,10 +16,7 @@ type Photo = {
 };
 
 function formatDate(timestamp: number): string {
-  return new Date(timestamp * 1000)
-    .toISOString()
-    .slice(0, 16)
-    .replace("T", " ");
+  return new Date(timestamp * 1000).toISOString().slice(0, 16).replace("T", " ");
 }
 
 export default async function PhotosPage() {
@@ -47,11 +44,7 @@ export default async function PhotosPage() {
 
   return (
     <main style={{ display: "grid", gap: "1.5rem" }}>
-      <ContentCard
-        icon="📸"
-        title={t("title")}
-        subtitle={t("subtitle")}
-      />
+      <ContentCard icon="📸" title={t("title")} subtitle={t("subtitle")} />
 
       <ContentCard padded={items.length === 0}>
         {items.length === 0 ? (