Initial kitchen scaffold — Phase 1 kitchen port (build-verified 2026-07-11)

FastAPI backend (Python 3.11, MSSQL ODBC for SambaPOS, Azure DI OCR),
kitchen_db on central PG. React/TS/Vite frontend with navy sidebar layout.

Backend: auth.py (APP_SLUG=kitchen, SimpleNamespace — archive routes use
.kitchen_id/.is_admin without modification), main.py (51 migrations, scheduler,
internal router for KDS bookings feed), api/internal.py, full archive API
(31 routers: invoices, recipes, menus, sambapos, resos, newbook, disputes,
purchase_orders, etc.), models, migrations, OCR pipeline.
kitchen_id pinned to 1 (B1 — single hotel).

Frontend: AuthGate (app=kitchen, token shim for archive compat — B5b pending),
Layout (navy sidebar, 6 sections, Lucide icons, teal --app-primary),
App.tsx (Outlet pattern, UploadApp outside Layout), index.css (full :root block).
strict: false — archive components have type issues; build clean.

Note: 45 archive components call fetch('/api/...') without /kitchen/ prefix
(B5b). Runtime 404s; deferred until after initial testing.

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

frontend/node_modules/@tanstack/react-query/src/errorBoundaryUtils.ts

@@ -0,0 +1,82 @@
+'use client'
+import * as React from 'react'
+import { shouldThrowError } from '@tanstack/query-core'
+import type {
+  DefaultedQueryObserverOptions,
+  Query,
+  QueryKey,
+  QueryObserverResult,
+  ThrowOnError,
+} from '@tanstack/query-core'
+import type { QueryErrorResetBoundaryValue } from './QueryErrorResetBoundary'
+
+export const ensurePreventErrorBoundaryRetry = <
+  TQueryFnData,
+  TError,
+  TData,
+  TQueryData,
+  TQueryKey extends QueryKey,
+>(
+  options: DefaultedQueryObserverOptions<
+    TQueryFnData,
+    TError,
+    TData,
+    TQueryData,
+    TQueryKey
+  >,
+  errorResetBoundary: QueryErrorResetBoundaryValue,
+  query: Query<TQueryFnData, TError, TQueryData, TQueryKey> | undefined,
+) => {
+  const throwOnError =
+    query?.state.error && typeof options.throwOnError === 'function'
+      ? shouldThrowError(options.throwOnError, [query.state.error, query])
+      : options.throwOnError
+
+  if (
+    options.suspense ||
+    options.experimental_prefetchInRender ||
+    throwOnError
+  ) {
+    // Prevent retrying failed query if the error boundary has not been reset yet
+    if (!errorResetBoundary.isReset()) {
+      options.retryOnMount = false
+    }
+  }
+}
+
+export const useClearResetErrorBoundary = (
+  errorResetBoundary: QueryErrorResetBoundaryValue,
+) => {
+  React.useEffect(() => {
+    errorResetBoundary.clearReset()
+  }, [errorResetBoundary])
+}
+
+export const getHasError = <
+  TData,
+  TError,
+  TQueryFnData,
+  TQueryData,
+  TQueryKey extends QueryKey,
+>({
+  result,
+  errorResetBoundary,
+  throwOnError,
+  query,
+  suspense,
+}: {
+  result: QueryObserverResult<TData, TError>
+  errorResetBoundary: QueryErrorResetBoundaryValue
+  throwOnError: ThrowOnError<TQueryFnData, TError, TQueryData, TQueryKey>
+  query: Query<TQueryFnData, TError, TQueryData, TQueryKey> | undefined
+  suspense: boolean | undefined
+}) => {
+  return (
+    result.isError &&
+    !errorResetBoundary.isReset() &&
+    !result.isFetching &&
+    query &&
+    ((suspense && result.data === undefined) ||
+      shouldThrowError(throwOnError, [result.error, query]))
+  )
+}