Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/api/health/route.ts

@@ -12,9 +12,7 @@ export const dynamic = "force-dynamic";
  * about reachability.
  */
 export async function GET() {
-  const database = await prisma
-    .$queryRaw`SELECT 1`.then(() => true)
-    .catch(() => false);
+  const database = await prisma.$queryRaw`SELECT 1`.then(() => true).catch(() => false);
 
   const emulator = await rcon.send("ping", null).catch(() => false);
 
@@ -25,11 +23,12 @@ export async function GET() {
       host: env.SMTP_HOST,
       port: env.SMTP_PORT,
       secure: env.SMTP_SECURE,
-      auth: env.SMTP_USER
-        ? { user: env.SMTP_USER, pass: env.SMTP_PASSWORD ?? "" }
-        : undefined,
+      auth: env.SMTP_USER ? { user: env.SMTP_USER, pass: env.SMTP_PASSWORD ?? "" } : undefined,
     });
-    smtp = await test.verify().then(() => true).catch(() => false);
+    smtp = await test
+      .verify()
+      .then(() => true)
+      .catch(() => false);
   }
 
   return apiJson({