feat: The Other Dude v9.0.1 — full-featured email system

ci: add GitHub Pages deployment workflow for docs site

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

frontend/src/test/setup.ts

@@ -0,0 +1 @@
+import '@testing-library/jest-dom/vitest'

frontend/src/test/test-utils.tsx

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+import React from 'react'
+import { render, type RenderOptions } from '@testing-library/react'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+
+function createTestQueryClient() {
+  return new QueryClient({
+    defaultOptions: {
+      queries: { retry: false, gcTime: 0, staleTime: 0 },
+      mutations: { retry: false },
+    },
+  })
+}
+
+interface WrapperProps {
+  children: React.ReactNode
+}
+
+export function renderWithProviders(
+  ui: React.ReactElement,
+  options?: Omit<RenderOptions, 'wrapper'>
+) {
+  const queryClient = createTestQueryClient()
+
+  function Wrapper({ children }: WrapperProps) {
+    return (
+      <QueryClientProvider client={queryClient}>
+        {children}
+      </QueryClientProvider>
+    )
+  }
+
+  return {
+    ...render(ui, { wrapper: Wrapper, ...options }),
+    queryClient,
+  }
+}
+
+export * from '@testing-library/react'
+export { renderWithProviders as render }