Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/api/guilds/[id]/route.ts

@@ -7,10 +7,7 @@ import { prisma } from "@/lib/prisma";
 
 export const dynamic = "force-dynamic";
 
-export async function GET(
-  _req: Request,
-  { params }: { params: Promise<{ id: string }> },
-) {
+export async function GET(_req: Request, { params }: { params: Promise<{ id: string }> }) {
   const { id } = await params;
 
   if (!/^\d+$/.test(id)) {

src/app/api/guilds/route.ts

@@ -39,9 +39,6 @@ export async function GET(req: Request) {
     });
   } catch {
     // DB unreachable — never 500; return an empty, well-formed payload.
-    return apiJson(
-      { data: [], meta: { page, perPage, total: 0, lastPage: 1 } },
-      { status: 200 },
-    );
+    return apiJson({ data: [], meta: { page, perPage, total: 0, lastPage: 1 } }, { status: 200 });
   }
 }