Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/api/tickets/route.ts

@@ -46,8 +46,12 @@ export async function POST(req: Request) {
     categoryId?: unknown;
   };
 
-  const title = String(body.title ?? "").trim().slice(0, 255);
-  const content = String(body.content ?? "").trim().slice(0, 5000);
+  const title = String(body.title ?? "")
+    .trim()
+    .slice(0, 255);
+  const content = String(body.content ?? "")
+    .trim()
+    .slice(0, 5000);
   if (!title) return apiError("Title is required");
   if (!content) return apiError("Content is required");