fix(web): remove TanStack devtools palm icon; restore user profile on dashboard

- Drop ReactQueryDevtools floating button (the "palm tree" in corner)
- Dashboard now shows: greeting with user name, stat cards, user profile
  (name/email/roles/orgId), and roadmap
- Add amber banner when API calls fail (typical cause: API not restarted
  after pulling new catalog code) with explicit fix instructions

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/food-market.web/src/App.tsx

@@ -1,6 +1,5 @@
 import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
-import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
 import { LoginPage } from '@/pages/LoginPage'
 import { DashboardPage } from '@/pages/DashboardPage'
 import { CountriesPage } from '@/pages/CountriesPage'
@@ -49,7 +48,6 @@ export default function App() {
           <Route path="*" element={<Navigate to="/" replace />} />
         </Routes>
       </BrowserRouter>
-      <ReactQueryDevtools initialIsOpen={false} />
     </QueryClientProvider>
   )
 }

src/food-market.web/src/pages/DashboardPage.tsx

@@ -4,6 +4,14 @@ import { PageHeader } from '@/components/PageHeader'
 import { api } from '@/lib/api'
 import type { PagedResult } from '@/lib/types'
 
+interface MeResponse {
+  sub: string
+  name: string
+  email: string
+  roles: string[]
+  orgId: string
+}
+
 function useCount(url: string) {
   return useQuery({
     queryKey: [url, 'count'],
@@ -33,18 +41,33 @@ function StatCard({ icon: Icon, label, value, isLoading }: StatCardProps) {
 }
 
 export function DashboardPage() {
+  const me = useQuery({
+    queryKey: ['me'],
+    queryFn: async () => (await api.get<MeResponse>('/api/me')).data,
+  })
   const products = useCount('/api/catalog/products')
   const counterparties = useCount('/api/catalog/counterparties')
   const stores = useCount('/api/catalog/stores')
   const retailPoints = useCount('/api/catalog/retail-points')
 
+  const anyError = [products, counterparties, stores, retailPoints].find(q => q.error)?.error as Error | undefined
+
   return (
     <div className="p-6">
       <PageHeader
         title="Dashboard"
-        description="Общие показатели системы. Детальные отчёты появятся после Phase 2."
+        description={me.data ? `Добро пожаловать, ${me.data.name}` : 'Общие показатели системы'}
       />
 
+      {anyError && (
+        <div className="mb-4 rounded-lg border border-amber-200 bg-amber-50 dark:bg-amber-950/20 dark:border-amber-900/50 p-3 text-sm text-amber-800 dark:text-amber-200">
+          <div className="font-medium">API недоступен или ещё не обновился</div>
+          <div className="text-amber-700 dark:text-amber-300 text-xs mt-0.5">
+            Перезапусти API после git pull: <code className="font-mono">Ctrl+C → dotnet run --project src/food-market.api</code>
+          </div>
+        </div>
+      )}
+
       <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
         <StatCard icon={Package} label="Товаров" value={products.data} isLoading={products.isLoading} />
         <StatCard icon={Users} label="Контрагентов" value={counterparties.data} isLoading={counterparties.isLoading} />
@@ -52,7 +75,19 @@ export function DashboardPage() {
         <StatCard icon={Store} label="Точек продаж" value={retailPoints.data} isLoading={retailPoints.isLoading} />
       </div>
 
-      <section className="mt-8 bg-white dark:bg-slate-900 rounded-xl border border-slate-200 dark:border-slate-800 p-6">
+      {me.data && (
+        <section className="mt-6 bg-white dark:bg-slate-900 rounded-xl border border-slate-200 dark:border-slate-800 p-5">
+          <h2 className="text-sm font-semibold text-slate-900 dark:text-slate-100 mb-2.5">Текущий пользователь</h2>
+          <dl className="grid grid-cols-1 md:grid-cols-2 gap-2 text-sm">
+            <div><dt className="text-slate-500 inline">Имя: </dt><dd className="inline text-slate-900 dark:text-slate-100 font-medium">{me.data.name}</dd></div>
+            <div><dt className="text-slate-500 inline">Email: </dt><dd className="inline">{me.data.email}</dd></div>
+            <div><dt className="text-slate-500 inline">Роли: </dt><dd className="inline">{me.data.roles.join(', ')}</dd></div>
+            <div><dt className="text-slate-500 inline">Организация: </dt><dd className="inline font-mono text-xs">{me.data.orgId}</dd></div>
+          </dl>
+        </section>
+      )}
+
+      <section className="mt-6 bg-white dark:bg-slate-900 rounded-xl border border-slate-200 dark:border-slate-800 p-6">
         <h2 className="text-base font-semibold text-slate-900 dark:text-slate-100 mb-2">Что дальше</h2>
         <ul className="text-sm text-slate-600 dark:text-slate-300 space-y-1.5 list-disc list-inside">
           <li>Phase 2: приёмка товара, розничные продажи, складские остатки</li>