Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/manifest.ts

@@ -16,8 +16,6 @@ export default async function manifest(): Promise<MetadataRoute.Manifest> {
     display: "standalone",
     background_color: "#0f1117",
     theme_color: theme,
-    icons: [
-      { src: "/assets/images/home_icon.gif", sizes: "any", type: "image/gif", purpose: "any" },
-    ],
+    icons: [{ src: "/assets/images/home_icon.gif", sizes: "any", type: "image/gif", purpose: "any" }],
   };
 }