Add export buttons to all admin panel screens

Backend export endpoints return DB data in seed JSON format
(games, routes+encounters, pokemon, evolutions). Frontend
downloads the JSON via new Export buttons on each admin page.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/admin/AdminGameDetail.tsx

@@ -1,5 +1,4 @@
 import { useState } from 'react'
-import { toast } from 'sonner'
 import { useParams, useNavigate, Link } from 'react-router-dom'
 import {
   DndContext,
@@ -26,6 +25,8 @@ import {
   useDeleteRoute,
   useReorderRoutes,
 } from '../../hooks/useAdmin'
+import { exportGameRoutes } from '../../api/admin'
+import { downloadJson } from '../../utils/download'
 import type { Route as GameRoute, CreateRouteInput, UpdateRouteInput } from '../../types'
 
 function SortableRouteRow({
@@ -161,14 +162,13 @@ export function AdminGameDetail() {
         <h3 className="text-lg font-medium">Routes ({routes.length})</h3>
         <div className="flex gap-2">
           <button
-            onClick={() => {
-              const names = routes.map((r) => r.name)
-              navigator.clipboard.writeText(JSON.stringify(names, null, 2))
-              toast.success('Route order copied to clipboard')
+            onClick={async () => {
+              const result = await exportGameRoutes(id)
+              downloadJson(result.data, result.filename)
             }}
             className="px-4 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-800"
           >
-            Export Order
+            Export
           </button>
           <button
             onClick={() => setShowCreate(true)}