refactor(nav): replace Storage page with Structures list at /logistics

- Move storage overview from /logistics/storage to /logistics root
- Rename page heading and sidebar label from Storage to Structures
- Update back link on structure detail page
- Remove old /logistics/storage route

src/app/(frontend)/logistics/page.tsx

@@ -2,9 +2,9 @@ import config from "@payload-config";
 import { getPayload } from "payload";
 import { GameStructure, Faction, Structure } from "@/payload-types";
 import { StorageGrid } from "@/components/frontend/storage/StorageGrid";
-import { WarehouseIcon } from "lucide-react";
+import { Building2Icon } from "lucide-react";
 
-export default async function LogisticsStoragePage() {
+export default async function LogisticsPage() {
   const payloadConfig = await config;
   const payload = await getPayload({ config: payloadConfig });
 
@@ -33,8 +33,8 @@ export default async function LogisticsStoragePage() {
     <div className="p-5 flex flex-col gap-6">
       <div className="flex flex-col gap-1">
         <div className="flex items-center gap-2">
-          <WarehouseIcon className="size-5 text-muted-foreground" />
-          <h1 className="text-lg font-semibold">Storage</h1>
+          <Building2Icon className="size-5 text-muted-foreground" />
+          <h1 className="text-lg font-semibold">Structures</h1>
         </div>
         <p className="text-sm text-muted-foreground">
           Overview of all structures and their stored resources across the theater of operations.

src/app/(frontend)/logistics/structures/[id]/page.tsx

@@ -77,11 +77,11 @@ export default async function StructureDetailPage({ params }: StructureDetailPag
     <div className="p-5 flex flex-col gap-6 max-w-4xl">
       <div className="flex flex-col gap-3">
         <Link
-          href="/logistics/storage"
+          href="/logistics"
           className="text-sm text-muted-foreground hover:text-primary transition-colors flex items-center gap-1 w-fit"
         >
           <ArrowLeftIcon className="size-3" />
-          Back to Storage
+          Back to Structures
         </Link>
 
         <div className="flex items-start justify-between gap-4">

src/components/frontend/blocks/AppSidebar.tsx

@@ -57,9 +57,9 @@ const data = {
       icon: Warehouse,
       items: [
         {
-          title: "Storage",
-          url: "/logistics/storage",
-          // icon: Box,
+          title: "Structures",
+          url: "/logistics",
+          // icon: Building2,
         },
         {
           title: "Market",