first

2025-11-12 22:53:17 +08:00
commit da700721fa
130 changed files with 23393 additions and 0 deletions
--- a/frontend/.gitignore
+++ b/frontend/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
--- a/frontend/README.md
+++ b/frontend/README.md
@@ -0,0 +1,73 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) (or [oxc](https://oxc.rs) when used in [rolldown-vite](https://vite.dev/guide/rolldown)) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
+
+```js
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+
+      // Remove tseslint.configs.recommended and replace with this
+      tseslint.configs.recommendedTypeChecked,
+      // Alternatively, use this for stricter rules
+      tseslint.configs.strictTypeChecked,
+      // Optionally, add this for stylistic rules
+      tseslint.configs.stylisticTypeChecked,
+
+      // Other configs...
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
+
+You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+
+```js
+// eslint.config.js
+import reactX from 'eslint-plugin-react-x'
+import reactDom from 'eslint-plugin-react-dom'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+      // Enable lint rules for React
+      reactX.configs['recommended-typescript'],
+      // Enable lint rules for React DOM
+      reactDom.configs.recommended,
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
--- a/frontend/eslint.config.js
+++ b/frontend/eslint.config.js
@@ -0,0 +1,23 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      js.configs.recommended,
+      tseslint.configs.recommended,
+      reactHooks.configs['recommended-latest'],
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+  },
+])
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>frontend</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -0,0 +1,43 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tanstack/react-query": "^5.90.7",
+    "axios": "^1.13.2",
+    "clsx": "^2.1.1",
+    "i18next": "^25.6.2",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
+    "react-dropzone": "^14.3.8",
+    "react-i18next": "^16.3.0",
+    "react-router-dom": "^7.9.5",
+    "tailwind-merge": "^3.4.0",
+    "zustand": "^5.0.8"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.39.1",
+    "@tailwindcss/postcss": "^4.1.17",
+    "@types/node": "^24.10.0",
+    "@types/react": "^19.2.2",
+    "@types/react-dom": "^19.2.2",
+    "@vitejs/plugin-react": "^5.1.0",
+    "autoprefixer": "^10.4.22",
+    "eslint": "^9.39.1",
+    "eslint-plugin-react-hooks": "^5.2.0",
+    "eslint-plugin-react-refresh": "^0.4.24",
+    "globals": "^16.5.0",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^4.1.17",
+    "typescript": "~5.9.3",
+    "typescript-eslint": "^8.46.3",
+    "vite": "^7.2.2"
+  }
+}
--- a/frontend/postcss.config.js
+++ b/frontend/postcss.config.js
@@ -0,0 +1,5 @@
+export default {
+  plugins: {
+    '@tailwindcss/postcss': {},
+  },
+}
--- a/frontend/public/vite.svg
+++ b/frontend/public/vite.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -0,0 +1,42 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -0,0 +1,53 @@
+import { Routes, Route, Navigate } from 'react-router-dom'
+import { useAuthStore } from '@/store/authStore'
+import LoginPage from '@/pages/LoginPage'
+import UploadPage from '@/pages/UploadPage'
+import ProcessingPage from '@/pages/ProcessingPage'
+import ResultsPage from '@/pages/ResultsPage'
+import ExportPage from '@/pages/ExportPage'
+import SettingsPage from '@/pages/SettingsPage'
+import Layout from '@/components/Layout'
+
+/**
+ * Protected Route Component
+ */
+function ProtectedRoute({ children }: { children: React.ReactNode }) {
+  const isAuthenticated = useAuthStore((state) => state.isAuthenticated)
+
+  if (!isAuthenticated) {
+    return <Navigate to="/login" replace />
+  }
+
+  return <>{children}</>
+}
+
+function App() {
+  return (
+    <Routes>
+      {/* Public routes */}
+      <Route path="/login" element={<LoginPage />} />
+
+      {/* Protected routes with layout */}
+      <Route
+        path="/"
+        element={
+          <ProtectedRoute>
+            <Layout />
+          </ProtectedRoute>
+        }
+      >
+        <Route index element={<Navigate to="/upload" replace />} />
+        <Route path="upload" element={<UploadPage />} />
+        <Route path="processing" element={<ProcessingPage />} />
+        <Route path="results" element={<ResultsPage />} />
+        <Route path="export" element={<ExportPage />} />
+        <Route path="settings" element={<SettingsPage />} />
+      </Route>
+
+      {/* Catch all */}
+      <Route path="*" element={<Navigate to="/" replace />} />
+    </Routes>
+  )
+}
+
+export default App
--- a/frontend/src/assets/react.svg
+++ b/frontend/src/assets/react.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
--- a/frontend/src/components/FileUpload.tsx
+++ b/frontend/src/components/FileUpload.tsx
@@ -0,0 +1,120 @@
+import { useCallback } from 'react'
+import { useDropzone } from 'react-dropzone'
+import { useTranslation } from 'react-i18next'
+import { cn } from '@/lib/utils'
+import { Card } from '@/components/ui/card'
+
+interface FileUploadProps {
+  onFilesSelected: (files: File[]) => void
+  accept?: Record<string, string[]>
+  maxSize?: number
+  maxFiles?: number
+  disabled?: boolean
+}
+
+export default function FileUpload({
+  onFilesSelected,
+  accept = {
+    'image/*': ['.png', '.jpg', '.jpeg'],
+    'application/pdf': ['.pdf'],
+    'application/vnd.openxmlformats-officedocument.wordprocessingml.document': ['.docx'],
+    'application/msword': ['.doc'],
+    'application/vnd.openxmlformats-officedocument.presentationml.presentation': ['.pptx'],
+    'application/vnd.ms-powerpoint': ['.ppt'],
+  },
+  maxSize = 50 * 1024 * 1024, // 50MB
+  maxFiles = 100,
+  disabled = false,
+}: FileUploadProps) {
+  const { t } = useTranslation()
+
+  const onDrop = useCallback(
+    (acceptedFiles: File[]) => {
+      if (acceptedFiles.length > 0) {
+        onFilesSelected(acceptedFiles)
+      }
+    },
+    [onFilesSelected]
+  )
+
+  const { getRootProps, getInputProps, isDragActive, isDragReject, fileRejections } = useDropzone({
+    onDrop,
+    accept,
+    maxSize,
+    maxFiles,
+    disabled,
+  })
+
+  return (
+    <div>
+      <Card
+        {...getRootProps()}
+        className={cn(
+          'border-2 border-dashed transition-colors cursor-pointer hover:border-primary/50',
+          {
+            'border-primary bg-primary/5': isDragActive && !isDragReject,
+            'border-destructive bg-destructive/5': isDragReject,
+            'opacity-50 cursor-not-allowed': disabled,
+          }
+        )}
+      >
+        <div className="p-12 text-center">
+          <input {...getInputProps()} />
+
+          <div className="mb-4">
+            <svg
+              className="mx-auto h-12 w-12 text-muted-foreground"
+              stroke="currentColor"
+              fill="none"
+              viewBox="0 0 48 48"
+              aria-hidden="true"
+            >
+              <path
+                d="M28 8H12a4 4 0 00-4 4v20m32-12v8m0 0v8a4 4 0 01-4 4H12a4 4 0 01-4-4v-4m32-4l-3.172-3.172a4 4 0 00-5.656 0L28 28M8 32l9.172-9.172a4 4 0 015.656 0L28 28m0 0l4 4m4-24h8m-4-4v8m-12 4h.02"
+                strokeWidth={2}
+                strokeLinecap="round"
+                strokeLinejoin="round"
+              />
+            </svg>
+          </div>
+
+          <div className="space-y-2">
+            {isDragActive ? (
+              <p className="text-lg font-medium text-primary">
+                {isDragReject ? t('upload.invalidFiles') : t('upload.dropFilesHere')}
+              </p>
+            ) : (
+              <>
+                <p className="text-lg font-medium text-foreground">
+                  {t('upload.dragAndDrop')}
+                </p>
+                <p className="text-sm text-muted-foreground">{t('upload.supportedFormats')}</p>
+                <p className="text-sm text-muted-foreground">{t('upload.maxFileSize')}</p>
+              </>
+            )}
+          </div>
+        </div>
+      </Card>
+
+      {fileRejections.length > 0 && (
+        <div className="mt-4 p-4 bg-destructive/10 border border-destructive rounded-md">
+          <p className="text-sm font-medium text-destructive mb-2">
+            {t('errors.uploadFailed')}
+          </p>
+          <ul className="text-sm text-destructive space-y-1">
+            {fileRejections.map(({ file, errors }) => (
+              <li key={file.name}>
+                {file.name}:{' '}
+                {errors.map((e) => {
+                  if (e.code === 'file-too-large') return t('errors.fileTooBig')
+                  if (e.code === 'file-invalid-type') return t('errors.unsupportedFormat')
+                  return e.message
+                })}
+              </li>
+            ))}
+          </ul>
+        </div>
+      )}
+    </div>
+  )
+}
--- a/frontend/src/components/Layout.tsx
+++ b/frontend/src/components/Layout.tsx
@@ -0,0 +1,71 @@
+import { Outlet, NavLink } from 'react-router-dom'
+import { useTranslation } from 'react-i18next'
+import { useAuthStore } from '@/store/authStore'
+import { apiClient } from '@/services/api'
+
+export default function Layout() {
+  const { t } = useTranslation()
+  const logout = useAuthStore((state) => state.logout)
+
+  const handleLogout = () => {
+    apiClient.logout()
+    logout()
+  }
+
+  const navLinks = [
+    { to: '/upload', label: t('nav.upload') },
+    { to: '/processing', label: t('nav.processing') },
+    { to: '/results', label: t('nav.results') },
+    { to: '/export', label: t('nav.export') },
+    { to: '/settings', label: t('nav.settings') },
+  ]
+
+  return (
+    <div className="min-h-screen bg-background">
+      {/* Header */}
+      <header className="border-b bg-card">
+        <div className="container mx-auto px-4 py-4 flex items-center justify-between">
+          <div>
+            <h1 className="text-2xl font-bold text-foreground">{t('app.title')}</h1>
+            <p className="text-sm text-muted-foreground">{t('app.subtitle')}</p>
+          </div>
+          <button
+            onClick={handleLogout}
+            className="px-4 py-2 text-sm font-medium text-foreground hover:text-primary transition-colors"
+          >
+            {t('nav.logout')}
+          </button>
+        </div>
+      </header>
+
+      {/* Navigation */}
+      <nav className="border-b bg-card">
+        <div className="container mx-auto px-4">
+          <ul className="flex space-x-1">
+            {navLinks.map((link) => (
+              <li key={link.to}>
+                <NavLink
+                  to={link.to}
+                  className={({ isActive }) =>
+                    `block px-4 py-3 text-sm font-medium transition-colors ${
+                      isActive
+                        ? 'text-primary border-b-2 border-primary'
+                        : 'text-muted-foreground hover:text-foreground'
+                    }`
+                  }
+                >
+                  {link.label}
+                </NavLink>
+              </li>
+            ))}
+          </ul>
+        </div>
+      </nav>
+
+      {/* Main Content */}
+      <main className="container mx-auto px-4 py-8">
+        <Outlet />
+      </main>
+    </div>
+  )
+}
--- a/frontend/src/components/MarkdownPreview.tsx
+++ b/frontend/src/components/MarkdownPreview.tsx
@@ -0,0 +1,26 @@
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+
+interface MarkdownPreviewProps {
+  title?: string
+  content: string
+  className?: string
+}
+
+export default function MarkdownPreview({ title, content, className }: MarkdownPreviewProps) {
+  return (
+    <Card className={className}>
+      {title && (
+        <CardHeader>
+          <CardTitle>{title}</CardTitle>
+        </CardHeader>
+      )}
+      <CardContent>
+        <div className="prose prose-sm max-w-none dark:prose-invert">
+          <pre className="whitespace-pre-wrap break-words bg-muted p-4 rounded-md overflow-auto max-h-[600px]">
+            {content}
+          </pre>
+        </div>
+      </CardContent>
+    </Card>
+  )
+}
--- a/frontend/src/components/ResultsTable.tsx
+++ b/frontend/src/components/ResultsTable.tsx
@@ -0,0 +1,90 @@
+import { useTranslation } from 'react-i18next'
+import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from '@/components/ui/table'
+import { Badge } from '@/components/ui/badge'
+import { Button } from '@/components/ui/button'
+import type { FileResult } from '@/types/api'
+
+interface ResultsTableProps {
+  files: FileResult[]
+  onViewResult?: (fileId: number) => void
+  onDownloadPDF?: (fileId: number) => void
+}
+
+export default function ResultsTable({ files, onViewResult, onDownloadPDF }: ResultsTableProps) {
+  const { t } = useTranslation()
+
+  const getStatusBadge = (status: FileResult['status']) => {
+    switch (status) {
+      case 'completed':
+        return <Badge variant="success">{t('processing.completed')}</Badge>
+      case 'processing':
+        return <Badge variant="default">{t('processing.processing')}</Badge>
+      case 'failed':
+        return <Badge variant="destructive">{t('processing.failed')}</Badge>
+      default:
+        return <Badge variant="secondary">{t('processing.pending')}</Badge>
+    }
+  }
+
+  const formatTime = (seconds?: number) => {
+    if (!seconds) return 'N/A'
+    return `${seconds.toFixed(2)}s`
+  }
+
+  return (
+    <div className="rounded-md border">
+      <Table>
+        <TableHeader>
+          <TableRow>
+            <TableHead>{t('results.filename')}</TableHead>
+            <TableHead>{t('results.status')}</TableHead>
+            <TableHead>{t('results.processingTime')}</TableHead>
+            <TableHead className="text-right">{t('results.actions')}</TableHead>
+          </TableRow>
+        </TableHeader>
+        <TableBody>
+          {files.length === 0 ? (
+            <TableRow>
+              <TableCell colSpan={4} className="text-center text-muted-foreground">
+                {t('results.noResults')}
+              </TableCell>
+            </TableRow>
+          ) : (
+            files.map((file) => (
+              <TableRow key={file.id}>
+                <TableCell className="font-medium">{file.filename}</TableCell>
+                <TableCell>{getStatusBadge(file.status)}</TableCell>
+                <TableCell>{formatTime(file.processing_time)}</TableCell>
+                <TableCell className="text-right">
+                  <div className="flex justify-end gap-2">
+                    {file.status === 'completed' && (
+                      <>
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          onClick={() => onViewResult?.(file.id)}
+                        >
+                          {t('results.viewMarkdown')}
+                        </Button>
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          onClick={() => onDownloadPDF?.(file.id)}
+                        >
+                          {t('results.downloadPDF')}
+                        </Button>
+                      </>
+                    )}
+                    {file.status === 'failed' && file.error && (
+                      <span className="text-sm text-destructive">{file.error}</span>
+                    )}
+                  </div>
+                </TableCell>
+              </TableRow>
+            ))
+          )}
+        </TableBody>
+      </Table>
+    </div>
+  )
+}
--- a/frontend/src/components/ui/badge.tsx
+++ b/frontend/src/components/ui/badge.tsx
@@ -0,0 +1,30 @@
+import * as React from 'react'
+import { cn } from '@/lib/utils'
+
+export interface BadgeProps extends React.HTMLAttributes<HTMLDivElement> {
+  variant?: 'default' | 'secondary' | 'destructive' | 'outline' | 'success'
+}
+
+function Badge({ className, variant = 'default', ...props }: BadgeProps) {
+  return (
+    <div
+      className={cn(
+        'inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2',
+        {
+          'border-transparent bg-primary text-primary-foreground hover:bg-primary/80':
+            variant === 'default',
+          'border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80':
+            variant === 'secondary',
+          'border-transparent bg-destructive text-destructive-foreground hover:bg-destructive/80':
+            variant === 'destructive',
+          'border-transparent bg-green-500 text-white hover:bg-green-600': variant === 'success',
+          'text-foreground': variant === 'outline',
+        },
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Badge }
--- a/frontend/src/components/ui/button.tsx
+++ b/frontend/src/components/ui/button.tsx
@@ -0,0 +1,42 @@
+import * as React from 'react'
+import { cn } from '@/lib/utils'
+
+export interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
+  variant?: 'default' | 'destructive' | 'outline' | 'secondary' | 'ghost' | 'link'
+  size?: 'default' | 'sm' | 'lg' | 'icon'
+}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant = 'default', size = 'default', ...props }, ref) => {
+    return (
+      <button
+        className={cn(
+          'inline-flex items-center justify-center rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:opacity-50 disabled:pointer-events-none ring-offset-background',
+          {
+            'bg-primary text-primary-foreground hover:bg-primary/90': variant === 'default',
+            'bg-destructive text-destructive-foreground hover:bg-destructive/90':
+              variant === 'destructive',
+            'border border-input hover:bg-accent hover:text-accent-foreground':
+              variant === 'outline',
+            'bg-secondary text-secondary-foreground hover:bg-secondary/80':
+              variant === 'secondary',
+            'hover:bg-accent hover:text-accent-foreground': variant === 'ghost',
+            'underline-offset-4 hover:underline text-primary': variant === 'link',
+          },
+          {
+            'h-10 py-2 px-4': size === 'default',
+            'h-9 px-3 rounded-md': size === 'sm',
+            'h-11 px-8 rounded-md': size === 'lg',
+            'h-10 w-10': size === 'icon',
+          },
+          className
+        )}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Button.displayName = 'Button'
+
+export { Button }
--- a/frontend/src/components/ui/card.tsx
+++ b/frontend/src/components/ui/card.tsx
@@ -0,0 +1,55 @@
+import * as React from 'react'
+import { cn } from '@/lib/utils'
+
+const Card = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn('rounded-lg border bg-card text-card-foreground shadow-sm', className)}
+      {...props}
+    />
+  )
+)
+Card.displayName = 'Card'
+
+const CardHeader = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn('flex flex-col space-y-1.5 p-6', className)} {...props} />
+  )
+)
+CardHeader.displayName = 'CardHeader'
+
+const CardTitle = React.forwardRef<HTMLParagraphElement, React.HTMLAttributes<HTMLHeadingElement>>(
+  ({ className, ...props }, ref) => (
+    <h3
+      ref={ref}
+      className={cn('text-2xl font-semibold leading-none tracking-tight', className)}
+      {...props}
+    />
+  )
+)
+CardTitle.displayName = 'CardTitle'
+
+const CardDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <p ref={ref} className={cn('text-sm text-muted-foreground', className)} {...props} />
+))
+CardDescription.displayName = 'CardDescription'
+
+const CardContent = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn('p-6 pt-0', className)} {...props} />
+  )
+)
+CardContent.displayName = 'CardContent'
+
+const CardFooter = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn('flex items-center p-6 pt-0', className)} {...props} />
+  )
+)
+CardFooter.displayName = 'CardFooter'
+
+export { Card, CardHeader, CardFooter, CardTitle, CardDescription, CardContent }
--- a/frontend/src/components/ui/progress.tsx
+++ b/frontend/src/components/ui/progress.tsx
@@ -0,0 +1,29 @@
+import * as React from 'react'
+import { cn } from '@/lib/utils'
+
+export interface ProgressProps extends React.HTMLAttributes<HTMLDivElement> {
+  value?: number
+  max?: number
+}
+
+const Progress = React.forwardRef<HTMLDivElement, ProgressProps>(
+  ({ className, value = 0, max = 100, ...props }, ref) => {
+    const percentage = Math.min(Math.max((value / max) * 100, 0), 100)
+
+    return (
+      <div
+        ref={ref}
+        className={cn('relative h-4 w-full overflow-hidden rounded-full bg-secondary', className)}
+        {...props}
+      >
+        <div
+          className="h-full w-full flex-1 bg-primary transition-all duration-300 ease-in-out"
+          style={{ transform: `translateX(-${100 - percentage}%)` }}
+        />
+      </div>
+    )
+  }
+)
+Progress.displayName = 'Progress'
+
+export { Progress }
--- a/frontend/src/components/ui/table.tsx
+++ b/frontend/src/components/ui/table.tsx
@@ -0,0 +1,70 @@
+import * as React from 'react'
+import { cn } from '@/lib/utils'
+
+const Table = React.forwardRef<HTMLTableElement, React.HTMLAttributes<HTMLTableElement>>(
+  ({ className, ...props }, ref) => (
+    <div className="w-full overflow-auto">
+      <table ref={ref} className={cn('w-full caption-bottom text-sm', className)} {...props} />
+    </div>
+  )
+)
+Table.displayName = 'Table'
+
+const TableHeader = React.forwardRef<
+  HTMLTableSectionElement,
+  React.HTMLAttributes<HTMLTableSectionElement>
+>(({ className, ...props }, ref) => (
+  <thead ref={ref} className={cn('[&_tr]:border-b', className)} {...props} />
+))
+TableHeader.displayName = 'TableHeader'
+
+const TableBody = React.forwardRef<
+  HTMLTableSectionElement,
+  React.HTMLAttributes<HTMLTableSectionElement>
+>(({ className, ...props }, ref) => (
+  <tbody ref={ref} className={cn('[&_tr:last-child]:border-0', className)} {...props} />
+))
+TableBody.displayName = 'TableBody'
+
+const TableRow = React.forwardRef<HTMLTableRowElement, React.HTMLAttributes<HTMLTableRowElement>>(
+  ({ className, ...props }, ref) => (
+    <tr
+      ref={ref}
+      className={cn(
+        'border-b transition-colors hover:bg-muted/50 data-[state=selected]:bg-muted',
+        className
+      )}
+      {...props}
+    />
+  )
+)
+TableRow.displayName = 'TableRow'
+
+const TableHead = React.forwardRef<
+  HTMLTableCellElement,
+  React.ThHTMLAttributes<HTMLTableCellElement>
+>(({ className, ...props }, ref) => (
+  <th
+    ref={ref}
+    className={cn(
+      'h-12 px-4 text-left align-middle font-medium text-muted-foreground [&:has([role=checkbox])]:pr-0',
+      className
+    )}
+    {...props}
+  />
+))
+TableHead.displayName = 'TableHead'
+
+const TableCell = React.forwardRef<
+  HTMLTableCellElement,
+  React.TdHTMLAttributes<HTMLTableCellElement>
+>(({ className, ...props }, ref) => (
+  <td
+    ref={ref}
+    className={cn('p-4 align-middle [&:has([role=checkbox])]:pr-0', className)}
+    {...props}
+  />
+))
+TableCell.displayName = 'TableCell'
+
+export { Table, TableHeader, TableBody, TableRow, TableHead, TableCell }
--- a/frontend/src/components/ui/toast.tsx
+++ b/frontend/src/components/ui/toast.tsx
@@ -0,0 +1,116 @@
+import * as React from 'react'
+import { cn } from '@/lib/utils'
+
+export type ToastProps = {
+  id: string
+  title?: string
+  description?: string
+  variant?: 'default' | 'destructive' | 'success'
+  duration?: number
+}
+
+type ToastContextType = {
+  toasts: ToastProps[]
+  toast: (props: Omit<ToastProps, 'id'>) => void
+  dismiss: (id: string) => void
+}
+
+const ToastContext = React.createContext<ToastContextType | undefined>(undefined)
+
+export function ToastProvider({ children }: { children: React.ReactNode }) {
+  const [toasts, setToasts] = React.useState<ToastProps[]>([])
+
+  const toast = React.useCallback((props: Omit<ToastProps, 'id'>) => {
+    const id = Math.random().toString(36).substr(2, 9)
+    const duration = props.duration ?? 3000
+
+    setToasts((prev) => [...prev, { ...props, id }])
+
+    if (duration > 0) {
+      setTimeout(() => {
+        setToasts((prev) => prev.filter((t) => t.id !== id))
+      }, duration)
+    }
+  }, [])
+
+  const dismiss = React.useCallback((id: string) => {
+    setToasts((prev) => prev.filter((t) => t.id !== id))
+  }, [])
+
+  return (
+    <ToastContext.Provider value={{ toasts, toast, dismiss }}>
+      {children}
+      <ToastViewport toasts={toasts} dismiss={dismiss} />
+    </ToastContext.Provider>
+  )
+}
+
+export function useToast() {
+  const context = React.useContext(ToastContext)
+  if (!context) {
+    throw new Error('useToast must be used within ToastProvider')
+  }
+  return context
+}
+
+function ToastViewport({
+  toasts,
+  dismiss,
+}: {
+  toasts: ToastProps[]
+  dismiss: (id: string) => void
+}) {
+  return (
+    <div className="fixed top-0 right-0 z-50 w-full max-w-md p-4 space-y-4 pointer-events-none">
+      {toasts.map((toast) => (
+        <Toast key={toast.id} {...toast} onDismiss={() => dismiss(toast.id)} />
+      ))}
+    </div>
+  )
+}
+
+function Toast({
+  title,
+  description,
+  variant = 'default',
+  onDismiss,
+}: ToastProps & { onDismiss: () => void }) {
+  return (
+    <div
+      className={cn(
+        'pointer-events-auto w-full rounded-lg border p-4 shadow-lg transition-all',
+        'bg-background text-foreground',
+        {
+          'border-destructive': variant === 'destructive',
+          'border-green-500': variant === 'success',
+        }
+      )}
+    >
+      <div className="flex items-start gap-3">
+        <div className="flex-1 space-y-1">
+          {title && <div className="text-sm font-semibold">{title}</div>}
+          {description && <div className="text-sm text-muted-foreground">{description}</div>}
+        </div>
+        <button
+          onClick={onDismiss}
+          className="text-foreground/50 hover:text-foreground transition-colors"
+        >
+          <svg
+            xmlns="http://www.w3.org/2000/svg"
+            width="16"
+            height="16"
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            strokeWidth="2"
+            strokeLinecap="round"
+            strokeLinejoin="round"
+          >
+            <line x1="18" y1="6" x2="6" y2="18"></line>
+            <line x1="6" y1="6" x2="18" y2="18"></line>
+          </svg>
+        </button>
+      </div>
+    </div>
+  )
+}
--- a/frontend/src/i18n/index.ts
+++ b/frontend/src/i18n/index.ts
@@ -0,0 +1,22 @@
+import i18n from 'i18next'
+import { initReactI18next } from 'react-i18next'
+import zhTW from './locales/zh-TW.json'
+
+/**
+ * i18n Configuration
+ * Default language: Traditional Chinese (zh-TW)
+ */
+i18n.use(initReactI18next).init({
+  resources: {
+    'zh-TW': {
+      translation: zhTW,
+    },
+  },
+  lng: 'zh-TW',
+  fallbackLng: 'zh-TW',
+  interpolation: {
+    escapeValue: false,
+  },
+})
+
+export default i18n
--- a/frontend/src/i18n/locales/zh-TW.json
+++ b/frontend/src/i18n/locales/zh-TW.json
@@ -0,0 +1,153 @@
+{
+  "app": {
+    "title": "OCR 批次處理系統",
+    "subtitle": "智能文字識別與轉換平台"
+  },
+  "nav": {
+    "upload": "上傳檔案",
+    "processing": "處理中",
+    "results": "結果檢視",
+    "export": "匯出",
+    "settings": "設定",
+    "logout": "登出"
+  },
+  "auth": {
+    "login": "登入",
+    "username": "使用者名稱",
+    "password": "密碼",
+    "loginButton": "登入",
+    "loginError": "登入失敗，請檢查帳號密碼",
+    "welcomeBack": "歡迎回來"
+  },
+  "upload": {
+    "title": "上傳檔案",
+    "dragAndDrop": "拖曳檔案至此，或點擊選擇檔案",
+    "dropFilesHere": "放開以上傳檔案",
+    "invalidFiles": "部分檔案格式不支援",
+    "supportedFormats": "支援格式：PNG, JPG, JPEG, PDF, DOC, DOCX, PPT, PPTX",
+    "maxFileSize": "單檔最大 50MB",
+    "uploadButton": "開始上傳",
+    "uploading": "上傳中...",
+    "uploadSuccess": "上傳成功",
+    "uploadError": "上傳失敗",
+    "fileCount": "已選擇 {{count}} 個檔案",
+    "clearAll": "清除全部",
+    "removeFile": "移除",
+    "selectedFiles": "已選擇的檔案"
+  },
+  "processing": {
+    "title": "OCR 處理中",
+    "status": "狀態",
+    "progress": "進度",
+    "currentFile": "目前處理",
+    "filesProcessed": "已處理 {{processed}} / {{total}} 個檔案",
+    "startProcessing": "開始處理",
+    "processing": "處理中...",
+    "completed": "處理完成",
+    "failed": "處理失敗",
+    "pending": "等待中",
+    "estimatedTime": "預計剩餘時間",
+    "settings": {
+      "title": "處理設定",
+      "language": "識別語言",
+      "threshold": "信心度閾值",
+      "layoutDetection": "版面偵測"
+    }
+  },
+  "results": {
+    "title": "OCR 結果",
+    "filename": "檔案名稱",
+    "status": "狀態",
+    "confidence": "信心度",
+    "processingTime": "處理時間",
+    "actions": "操作",
+    "viewMarkdown": "檢視 Markdown",
+    "viewJSON": "檢視 JSON",
+    "downloadPDF": "下載 PDF",
+    "preview": "預覽",
+    "noResults": "尚無處理結果",
+    "textBlocks": "文字區塊",
+    "layoutInfo": "版面資訊"
+  },
+  "export": {
+    "title": "匯出結果",
+    "format": "匯出格式",
+    "formats": {
+      "txt": "純文字 (.txt)",
+      "json": "JSON (.json)",
+      "excel": "Excel (.xlsx)",
+      "markdown": "Markdown (.md)",
+      "pdf": "PDF (.pdf)"
+    },
+    "options": {
+      "title": "匯出選項",
+      "confidenceThreshold": "信心度閾值",
+      "includeMetadata": "包含元資料",
+      "filenamePattern": "檔案名稱模式",
+      "cssTemplate": "CSS 樣板"
+    },
+    "rules": {
+      "title": "匯出規則",
+      "selectRule": "選擇規則",
+      "saveRule": "儲存規則",
+      "newRule": "新增規則",
+      "ruleName": "規則名稱",
+      "deleteRule": "刪除規則"
+    },
+    "cssTemplates": {
+      "default": "預設",
+      "academic": "學術",
+      "business": "商務",
+      "report": "報告"
+    },
+    "exportButton": "匯出",
+    "exporting": "匯出中...",
+    "exportSuccess": "匯出成功",
+    "exportError": "匯出失敗"
+  },
+  "settings": {
+    "title": "設定",
+    "exportRules": "匯出規則管理",
+    "language": "語言",
+    "theme": "主題",
+    "about": "關於"
+  },
+  "common": {
+    "confirm": "確認",
+    "cancel": "取消",
+    "save": "儲存",
+    "delete": "刪除",
+    "edit": "編輯",
+    "close": "關閉",
+    "loading": "載入中...",
+    "error": "錯誤",
+    "success": "成功",
+    "warning": "警告",
+    "info": "資訊",
+    "search": "搜尋",
+    "filter": "篩選",
+    "sort": "排序",
+    "refresh": "重新整理",
+    "back": "返回",
+    "next": "下一步",
+    "previous": "上一步",
+    "submit": "提交"
+  },
+  "errors": {
+    "networkError": "網路錯誤，請稍後再試",
+    "unauthorized": "未授權，請重新登入",
+    "notFound": "找不到資源",
+    "serverError": "伺服器錯誤",
+    "validationError": "驗證錯誤",
+    "fileTooBig": "檔案過大",
+    "unsupportedFormat": "不支援的格式",
+    "uploadFailed": "上傳失敗",
+    "processingFailed": "處理失敗",
+    "exportFailed": "匯出失敗"
+  },
+  "translation": {
+    "title": "翻譯功能",
+    "comingSoon": "即將推出",
+    "description": "文件翻譯功能正在開發中，敬請期待"
+  }
+}
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -0,0 +1,57 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+@layer base {
+  :root {
+    --background: 0 0% 100%;
+    --foreground: 222.2 84% 4.9%;
+    --card: 0 0% 100%;
+    --card-foreground: 222.2 84% 4.9%;
+    --popover: 0 0% 100%;
+    --popover-foreground: 222.2 84% 4.9%;
+    --primary: 221.2 83.2% 53.3%;
+    --primary-foreground: 210 40% 98%;
+    --secondary: 210 40% 96.1%;
+    --secondary-foreground: 222.2 47.4% 11.2%;
+    --muted: 210 40% 96.1%;
+    --muted-foreground: 215.4 16.3% 46.9%;
+    --accent: 210 40% 96.1%;
+    --accent-foreground: 222.2 47.4% 11.2%;
+    --destructive: 0 84.2% 60.2%;
+    --destructive-foreground: 210 40% 98%;
+    --border: 214.3 31.8% 91.4%;
+    --input: 214.3 31.8% 91.4%;
+    --ring: 221.2 83.2% 53.3%;
+    --radius: 0.5rem;
+  }
+
+  .dark {
+    --background: 222.2 84% 4.9%;
+    --foreground: 210 40% 98%;
+    --card: 222.2 84% 4.9%;
+    --card-foreground: 210 40% 98%;
+    --popover: 222.2 84% 4.9%;
+    --popover-foreground: 210 40% 98%;
+    --primary: 217.2 91.2% 59.8%;
+    --primary-foreground: 222.2 47.4% 11.2%;
+    --secondary: 217.2 32.6% 17.5%;
+    --secondary-foreground: 210 40% 98%;
+    --muted: 217.2 32.6% 17.5%;
+    --muted-foreground: 215 20.2% 65.1%;
+    --accent: 217.2 32.6% 17.5%;
+    --accent-foreground: 210 40% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 210 40% 98%;
+    --border: 217.2 32.6% 17.5%;
+    --input: 217.2 32.6% 17.5%;
+    --ring: 224.3 76.3% 48%;
+  }
+}
+
+@layer base {
+  body {
+    background-color: hsl(var(--background));
+    color: hsl(var(--foreground));
+  }
+}
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -0,0 +1,34 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import { BrowserRouter } from 'react-router-dom'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import { I18nextProvider } from 'react-i18next'
+import { ToastProvider } from './components/ui/toast'
+import i18n from './i18n'
+import './index.css'
+import App from './App.tsx'
+
+// Create React Query client
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      retry: 1,
+      refetchOnWindowFocus: false,
+      staleTime: 1000 * 60 * 5, // 5 minutes
+    },
+  },
+})
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <QueryClientProvider client={queryClient}>
+      <I18nextProvider i18n={i18n}>
+        <ToastProvider>
+          <BrowserRouter>
+            <App />
+          </BrowserRouter>
+        </ToastProvider>
+      </I18nextProvider>
+    </QueryClientProvider>
+  </StrictMode>,
+)
--- a/frontend/src/pages/ExportPage.tsx
+++ b/frontend/src/pages/ExportPage.tsx
@@ -0,0 +1,321 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useTranslation } from 'react-i18next'
+import { useMutation, useQuery } from '@tanstack/react-query'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { useToast } from '@/components/ui/toast'
+import { useUploadStore } from '@/store/uploadStore'
+import { apiClient } from '@/services/api'
+import type { ExportRequest, ExportOptions } from '@/types/api'
+
+type ExportFormat = 'txt' | 'json' | 'excel' | 'markdown' | 'pdf'
+
+export default function ExportPage() {
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+  const { toast } = useToast()
+  const { batchId } = useUploadStore()
+
+  const [format, setFormat] = useState<ExportFormat>('txt')
+  const [selectedRuleId, setSelectedRuleId] = useState<number | undefined>()
+  const [options, setOptions] = useState<ExportOptions>({
+    confidence_threshold: 0.5,
+    include_metadata: true,
+    filename_pattern: '{filename}_ocr',
+    css_template: 'default',
+  })
+
+  // Fetch export rules
+  const { data: exportRules } = useQuery({
+    queryKey: ['exportRules'],
+    queryFn: () => apiClient.getExportRules(),
+    enabled: true,
+  })
+
+  // Fetch CSS templates
+  const { data: cssTemplates } = useQuery({
+    queryKey: ['cssTemplates'],
+    queryFn: () => apiClient.getCSSTemplates(),
+    enabled: format === 'pdf',
+  })
+
+  // Export mutation
+  const exportMutation = useMutation({
+    mutationFn: async (data: ExportRequest) => {
+      const blob = await apiClient.exportResults(data)
+      return { blob, format: data.format }
+    },
+    onSuccess: ({ blob, format: exportFormat }) => {
+      // Create download link
+      const url = window.URL.createObjectURL(blob)
+      const a = document.createElement('a')
+      a.href = url
+
+      // Determine file extension
+      const extensions: Record<ExportFormat, string> = {
+        txt: 'txt',
+        json: 'json',
+        excel: 'xlsx',
+        markdown: 'md',
+        pdf: 'pdf',
+      }
+
+      a.download = `batch_${batchId}_export.${extensions[exportFormat]}`
+      document.body.appendChild(a)
+      a.click()
+      window.URL.revokeObjectURL(url)
+      document.body.removeChild(a)
+
+      toast({
+        title: t('export.exportSuccess'),
+        description: `已成功匯出為 ${exportFormat.toUpperCase()} 格式`,
+        variant: 'success',
+      })
+    },
+    onError: (error: any) => {
+      toast({
+        title: t('export.exportError'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    },
+  })
+
+  const handleExport = () => {
+    if (!batchId) {
+      toast({
+        title: t('errors.validationError'),
+        description: '請先上傳並處理檔案',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    const exportRequest: ExportRequest = {
+      batch_id: batchId,
+      format,
+      rule_id: selectedRuleId,
+      options,
+    }
+
+    exportMutation.mutate(exportRequest)
+  }
+
+  const handleFormatChange = (newFormat: ExportFormat) => {
+    setFormat(newFormat)
+    // Reset CSS template if switching away from PDF
+    if (newFormat !== 'pdf') {
+      setOptions((prev) => ({ ...prev, css_template: undefined }))
+    } else {
+      setOptions((prev) => ({ ...prev, css_template: 'default' }))
+    }
+  }
+
+  const handleRuleChange = (ruleId: number | undefined) => {
+    setSelectedRuleId(ruleId)
+    if (ruleId && exportRules) {
+      const rule = exportRules.find((r) => r.id === ruleId)
+      if (rule && rule.config_json) {
+        // Apply rule configuration
+        setOptions((prev) => ({
+          ...prev,
+          ...rule.config_json,
+          css_template: rule.css_template || prev.css_template,
+        }))
+      }
+    }
+  }
+
+  // Show helpful message when no batch is selected
+  if (!batchId) {
+    return (
+      <div className="max-w-2xl mx-auto mt-12">
+        <Card>
+          <CardHeader>
+            <CardTitle>{t('export.title')}</CardTitle>
+          </CardHeader>
+          <CardContent className="text-center space-y-4">
+            <p className="text-muted-foreground">
+              {t('export.noBatchMessage', { defaultValue: '尚未選擇任何批次。請先上傳並完成處理檔案。' })}
+            </p>
+            <Button onClick={() => navigate('/upload')}>
+              {t('export.goToUpload', { defaultValue: '前往上傳頁面' })}
+            </Button>
+          </CardContent>
+        </Card>
+      </div>
+    )
+  }
+
+  return (
+    <div className="max-w-4xl mx-auto space-y-6">
+      <div>
+        <h1 className="text-3xl font-bold text-foreground mb-2">{t('export.title')}</h1>
+        <p className="text-muted-foreground">批次 ID: {batchId}</p>
+      </div>
+
+      {/* Format Selection */}
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('export.format')}</CardTitle>
+        </CardHeader>
+        <CardContent>
+          <div className="grid grid-cols-2 md:grid-cols-5 gap-3">
+            {(['txt', 'json', 'excel', 'markdown', 'pdf'] as ExportFormat[]).map((fmt) => (
+              <button
+                key={fmt}
+                onClick={() => handleFormatChange(fmt)}
+                className={`p-4 border rounded-lg text-center transition-colors ${
+                  format === fmt
+                    ? 'border-primary bg-primary/10 text-primary font-semibold'
+                    : 'border-gray-200 hover:border-primary/50'
+                }`}
+              >
+                <div className="text-sm">{t(`export.formats.${fmt}`)}</div>
+              </button>
+            ))}
+          </div>
+        </CardContent>
+      </Card>
+
+      {/* Export Rules */}
+      {exportRules && exportRules.length > 0 && (
+        <Card>
+          <CardHeader>
+            <CardTitle>{t('export.rules.title')}</CardTitle>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-3">
+              <label className="block text-sm font-medium text-foreground">
+                {t('export.rules.selectRule')}
+              </label>
+              <select
+                value={selectedRuleId || ''}
+                onChange={(e) => handleRuleChange(e.target.value ? Number(e.target.value) : undefined)}
+                className="w-full px-3 py-2 border border-gray-200 rounded-md bg-background text-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+              >
+                <option value="">無 (使用預設設定)</option>
+                {exportRules.map((rule) => (
+                  <option key={rule.id} value={rule.id}>
+                    {rule.rule_name}
+                  </option>
+                ))}
+              </select>
+            </div>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* Export Options */}
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('export.options.title')}</CardTitle>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          {/* Confidence Threshold */}
+          <div>
+            <label className="block text-sm font-medium text-foreground mb-2">
+              {t('export.options.confidenceThreshold')}: {options.confidence_threshold}
+            </label>
+            <input
+              type="range"
+              min="0"
+              max="1"
+              step="0.05"
+              value={options.confidence_threshold}
+              onChange={(e) =>
+                setOptions((prev) => ({
+                  ...prev,
+                  confidence_threshold: Number(e.target.value),
+                }))
+              }
+              className="w-full"
+            />
+            <div className="flex justify-between text-xs text-muted-foreground mt-1">
+              <span>0</span>
+              <span>0.5</span>
+              <span>1.0</span>
+            </div>
+          </div>
+
+          {/* Include Metadata */}
+          <div className="flex items-center space-x-2">
+            <input
+              type="checkbox"
+              id="include-metadata"
+              checked={options.include_metadata}
+              onChange={(e) =>
+                setOptions((prev) => ({
+                  ...prev,
+                  include_metadata: e.target.checked,
+                }))
+              }
+              className="w-4 h-4 border border-gray-200 rounded"
+            />
+            <label htmlFor="include-metadata" className="text-sm font-medium text-foreground">
+              {t('export.options.includeMetadata')}
+            </label>
+          </div>
+
+          {/* Filename Pattern */}
+          <div>
+            <label className="block text-sm font-medium text-foreground mb-2">
+              {t('export.options.filenamePattern')}
+            </label>
+            <input
+              type="text"
+              value={options.filename_pattern}
+              onChange={(e) =>
+                setOptions((prev) => ({
+                  ...prev,
+                  filename_pattern: e.target.value,
+                }))
+              }
+              className="w-full px-3 py-2 border border-gray-200 rounded-md bg-background text-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+              placeholder="{filename}_ocr"
+            />
+            <p className="text-xs text-muted-foreground mt-1">
+              可用變數: {'{filename}'}, {'{batch_id}'}, {'{date}'}
+            </p>
+          </div>
+
+          {/* CSS Template (PDF only) */}
+          {format === 'pdf' && cssTemplates && cssTemplates.length > 0 && (
+            <div>
+              <label className="block text-sm font-medium text-foreground mb-2">
+                {t('export.options.cssTemplate')}
+              </label>
+              <select
+                value={options.css_template || 'default'}
+                onChange={(e) =>
+                  setOptions((prev) => ({
+                    ...prev,
+                    css_template: e.target.value,
+                  }))
+                }
+                className="w-full px-3 py-2 border border-gray-200 rounded-md bg-background text-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+              >
+                {cssTemplates.map((template) => (
+                  <option key={template.filename} value={template.filename}>
+                    {template.name} - {template.description}
+                  </option>
+                ))}
+              </select>
+            </div>
+          )}
+        </CardContent>
+      </Card>
+
+      {/* Export Button */}
+      <div className="flex justify-end gap-3">
+        <Button variant="outline" onClick={() => navigate('/results')}>
+          {t('common.back')}
+        </Button>
+        <Button onClick={handleExport} disabled={exportMutation.isPending}>
+          {exportMutation.isPending ? t('export.exporting') : t('export.exportButton')}
+        </Button>
+      </div>
+    </div>
+  )
+}
--- a/frontend/src/pages/LoginPage.tsx
+++ b/frontend/src/pages/LoginPage.tsx
@@ -0,0 +1,97 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useTranslation } from 'react-i18next'
+import { useAuthStore } from '@/store/authStore'
+import { apiClient } from '@/services/api'
+
+export default function LoginPage() {
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+  const setUser = useAuthStore((state) => state.setUser)
+  const [username, setUsername] = useState('')
+  const [password, setPassword] = useState('')
+  const [error, setError] = useState('')
+  const [loading, setLoading] = useState(false)
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault()
+    setError('')
+    setLoading(true)
+
+    try {
+      await apiClient.login({ username, password })
+      // For now, just set a basic user object (backend doesn't return user info)
+      setUser({ id: 1, username })
+      navigate('/upload')
+    } catch (err: any) {
+      const errorDetail = err.response?.data?.detail
+      if (Array.isArray(errorDetail)) {
+        // Handle validation error array from backend
+        setError(errorDetail.map((e: any) => e.msg || e.message || String(e)).join(', '))
+      } else if (typeof errorDetail === 'string') {
+        setError(errorDetail)
+      } else {
+        setError(t('auth.loginError'))
+      }
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  return (
+    <div className="min-h-screen bg-background flex items-center justify-center">
+      <div className="w-full max-w-md">
+        <div className="bg-card rounded-lg shadow-lg p-8 border">
+          <div className="text-center mb-8">
+            <h1 className="text-3xl font-bold text-foreground mb-2">{t('app.title')}</h1>
+            <p className="text-muted-foreground">{t('app.subtitle')}</p>
+          </div>
+
+          <form onSubmit={handleSubmit} className="space-y-6">
+            <div>
+              <label htmlFor="username" className="block text-sm font-medium text-foreground mb-2">
+                {t('auth.username')}
+              </label>
+              <input
+                id="username"
+                type="text"
+                value={username}
+                onChange={(e) => setUsername(e.target.value)}
+                className="w-full px-3 py-2 border border-input bg-background rounded-md focus:outline-none focus:ring-2 focus:ring-ring"
+                required
+              />
+            </div>
+
+            <div>
+              <label htmlFor="password" className="block text-sm font-medium text-foreground mb-2">
+                {t('auth.password')}
+              </label>
+              <input
+                id="password"
+                type="password"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                className="w-full px-3 py-2 border border-input bg-background rounded-md focus:outline-none focus:ring-2 focus:ring-ring"
+                required
+              />
+            </div>
+
+            {error && (
+              <div className="p-3 bg-destructive/10 border border-destructive rounded-md text-sm text-destructive">
+                {error}
+              </div>
+            )}
+
+            <button
+              type="submit"
+              disabled={loading}
+              className="w-full py-2 px-4 bg-primary text-primary-foreground rounded-md font-medium hover:bg-primary/90 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              {loading ? t('common.loading') : t('auth.loginButton')}
+            </button>
+          </form>
+        </div>
+      </div>
+    </div>
+  )
+}
--- a/frontend/src/pages/ProcessingPage.tsx
+++ b/frontend/src/pages/ProcessingPage.tsx
@@ -0,0 +1,200 @@
+import { useEffect } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useTranslation } from 'react-i18next'
+import { useQuery, useMutation } from '@tanstack/react-query'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Progress } from '@/components/ui/progress'
+import { Button } from '@/components/ui/button'
+import { Badge } from '@/components/ui/badge'
+import { useToast } from '@/components/ui/toast'
+import { useUploadStore } from '@/store/uploadStore'
+import { apiClient } from '@/services/api'
+
+export default function ProcessingPage() {
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+  const { toast } = useToast()
+  const { batchId, files } = useUploadStore()
+
+  // Start OCR processing
+  const processOCRMutation = useMutation({
+    mutationFn: () => apiClient.processOCR({ batch_id: batchId! }),
+    onSuccess: () => {
+      toast({
+        title: '開始處理',
+        description: 'OCR 處理已開始',
+        variant: 'success',
+      })
+    },
+    onError: (error: any) => {
+      toast({
+        title: t('errors.processingFailed'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    },
+  })
+
+  // Poll batch status
+  const { data: batchStatus } = useQuery({
+    queryKey: ['batchStatus', batchId],
+    queryFn: () => apiClient.getBatchStatus(batchId!),
+    enabled: !!batchId,
+    refetchInterval: (query) => {
+      const data = query.state.data
+      if (!data) return 2000
+      // Stop polling if completed or failed
+      if (data.batch.status === 'completed' || data.batch.status === 'failed') {
+        return false
+      }
+      return 2000 // Poll every 2 seconds
+    },
+  })
+
+  // Auto-redirect when completed
+  useEffect(() => {
+    if (batchStatus?.batch.status === 'completed') {
+      setTimeout(() => {
+        navigate('/results')
+      }, 1000)
+    }
+  }, [batchStatus?.batch.status, navigate])
+
+  const handleStartProcessing = () => {
+    processOCRMutation.mutate()
+  }
+
+  const handleViewResults = () => {
+    navigate('/results')
+  }
+
+  const getStatusBadge = (status: string) => {
+    switch (status) {
+      case 'completed':
+        return <Badge variant="success">{t('processing.completed')}</Badge>
+      case 'processing':
+        return <Badge variant="default">{t('processing.processing')}</Badge>
+      case 'failed':
+        return <Badge variant="destructive">{t('processing.failed')}</Badge>
+      default:
+        return <Badge variant="secondary">{t('processing.pending')}</Badge>
+    }
+  }
+
+  // Show helpful message when no batch is selected
+  if (!batchId) {
+    return (
+      <div className="max-w-2xl mx-auto mt-12">
+        <Card>
+          <CardHeader>
+            <CardTitle>{t('processing.title')}</CardTitle>
+          </CardHeader>
+          <CardContent className="text-center space-y-4">
+            <p className="text-muted-foreground">
+              {t('processing.noBatchMessage', { defaultValue: '尚未選擇任何批次。請先上傳檔案以建立批次。' })}
+            </p>
+            <Button onClick={() => navigate('/upload')}>
+              {t('processing.goToUpload', { defaultValue: '前往上傳頁面' })}
+            </Button>
+          </CardContent>
+        </Card>
+      </div>
+    )
+  }
+
+  const isProcessing = batchStatus?.batch.status === 'processing'
+  const isCompleted = batchStatus?.batch.status === 'completed'
+  const isPending = !batchStatus || batchStatus.batch.status === 'pending'
+
+  return (
+    <div className="max-w-4xl mx-auto space-y-6">
+      <div>
+        <h1 className="text-3xl font-bold text-foreground mb-2">{t('processing.title')}</h1>
+        <p className="text-muted-foreground">
+          批次 ID: {batchId} - 共 {files.length} 個檔案
+        </p>
+      </div>
+
+      {/* Overall Progress */}
+      <Card>
+        <CardHeader>
+          <div className="flex items-center justify-between">
+            <CardTitle>{t('processing.progress')}</CardTitle>
+            {batchStatus && getStatusBadge(batchStatus.batch.status)}
+          </div>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          <div>
+            <div className="flex justify-between text-sm mb-2">
+              <span className="text-muted-foreground">{t('processing.status')}</span>
+              <span className="font-medium">
+                {batchStatus?.batch.progress_percentage || 0}%
+              </span>
+            </div>
+            <Progress value={batchStatus?.batch.progress_percentage || 0} max={100} />
+          </div>
+
+          {batchStatus && (
+            <div className="text-sm text-muted-foreground">
+              {t('processing.filesProcessed', {
+                processed: batchStatus.files.filter((f) => f.status === 'completed').length,
+                total: batchStatus.files.length,
+              })}
+            </div>
+          )}
+
+          <div className="flex gap-3">
+            {isPending && (
+              <Button
+                onClick={handleStartProcessing}
+                disabled={processOCRMutation.isPending}
+              >
+                {processOCRMutation.isPending
+                  ? t('processing.processing')
+                  : t('processing.startProcessing')}
+              </Button>
+            )}
+
+            {isCompleted && (
+              <Button onClick={handleViewResults}>{t('common.next')}</Button>
+            )}
+          </div>
+        </CardContent>
+      </Card>
+
+      {/* File List */}
+      {batchStatus && (
+        <Card>
+          <CardHeader>
+            <CardTitle>檔案處理狀態</CardTitle>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-2">
+              {batchStatus.files.map((file) => (
+                <div
+                  key={file.id}
+                  className="flex items-center justify-between p-3 bg-muted rounded-md"
+                >
+                  <div className="flex-1 min-w-0">
+                    <p className="text-sm font-medium text-foreground truncate">
+                      {file.filename}
+                    </p>
+                    {file.processing_time && (
+                      <p className="text-xs text-muted-foreground">
+                        處理時間: {file.processing_time.toFixed(2)}s
+                      </p>
+                    )}
+                    {file.error && (
+                      <p className="text-xs text-destructive">{file.error}</p>
+                    )}
+                  </div>
+                  {getStatusBadge(file.status)}
+                </div>
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+      )}
+    </div>
+  )
+}
--- a/frontend/src/pages/ResultsPage.tsx
+++ b/frontend/src/pages/ResultsPage.tsx
@@ -0,0 +1,157 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useTranslation } from 'react-i18next'
+import { useQuery } from '@tanstack/react-query'
+import { Button } from '@/components/ui/button'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import ResultsTable from '@/components/ResultsTable'
+import MarkdownPreview from '@/components/MarkdownPreview'
+import { useToast } from '@/components/ui/toast'
+import { useUploadStore } from '@/store/uploadStore'
+import { apiClient } from '@/services/api'
+
+export default function ResultsPage() {
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+  const { toast } = useToast()
+  const { batchId } = useUploadStore()
+  const [selectedFileId, setSelectedFileId] = useState<number | null>(null)
+
+  // Get batch status to show results
+  const { data: batchStatus, isLoading } = useQuery({
+    queryKey: ['batchStatus', batchId],
+    queryFn: () => apiClient.getBatchStatus(batchId!),
+    enabled: !!batchId,
+  })
+
+  // Get OCR result for selected file
+  const { data: ocrResult, isLoading: isLoadingResult } = useQuery({
+    queryKey: ['ocrResult', selectedFileId],
+    queryFn: () => apiClient.getOCRResult(selectedFileId!.toString()),
+    enabled: !!selectedFileId,
+  })
+
+  const handleViewResult = (fileId: number) => {
+    setSelectedFileId(fileId)
+  }
+
+  const handleDownloadPDF = async (fileId: number) => {
+    try {
+      const blob = await apiClient.exportPDF(fileId)
+      const url = window.URL.createObjectURL(blob)
+      const a = document.createElement('a')
+      a.href = url
+      a.download = `ocr-result-${fileId}.pdf`
+      document.body.appendChild(a)
+      a.click()
+      window.URL.revokeObjectURL(url)
+      document.body.removeChild(a)
+
+      toast({
+        title: t('export.exportSuccess'),
+        description: 'PDF 已下載',
+        variant: 'success',
+      })
+    } catch (error: any) {
+      toast({
+        title: t('export.exportError'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    }
+  }
+
+  const handleExport = () => {
+    navigate('/export')
+  }
+
+  // Show helpful message when no batch is selected
+  if (!batchId) {
+    return (
+      <div className="max-w-2xl mx-auto mt-12">
+        <Card>
+          <CardHeader>
+            <CardTitle>{t('results.title')}</CardTitle>
+          </CardHeader>
+          <CardContent className="text-center space-y-4">
+            <p className="text-muted-foreground">
+              {t('results.noBatchMessage', { defaultValue: '尚未選擇任何批次。請先上傳並處理檔案。' })}
+            </p>
+            <Button onClick={() => navigate('/upload')}>
+              {t('results.goToUpload', { defaultValue: '前往上傳頁面' })}
+            </Button>
+          </CardContent>
+        </Card>
+      </div>
+    )
+  }
+
+  const completedFiles = batchStatus?.files.filter((f) => f.status === 'completed') || []
+
+  return (
+    <div className="max-w-6xl mx-auto space-y-6">
+      <div className="flex items-center justify-between">
+        <div>
+          <h1 className="text-3xl font-bold text-foreground mb-2">{t('results.title')}</h1>
+          <p className="text-muted-foreground">
+            批次 ID: {batchId} - 已完成 {completedFiles.length} 個檔案
+          </p>
+        </div>
+        <div className="flex gap-2">
+          <Button onClick={handleExport}>{t('nav.export')}</Button>
+          <Button
+            variant="outline"
+            disabled
+            title={t('translation.comingSoon')}
+            className="relative"
+          >
+            {t('translation.title')}
+            <span className="ml-2 text-xs bg-yellow-100 text-yellow-800 px-2 py-0.5 rounded">
+              {t('translation.comingSoon')}
+            </span>
+          </Button>
+        </div>
+      </div>
+
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+        {/* Results Table */}
+        <div>
+          <ResultsTable
+            files={batchStatus?.files || []}
+            onViewResult={handleViewResult}
+            onDownloadPDF={handleDownloadPDF}
+          />
+        </div>
+
+        {/* Preview Panel */}
+        <div>
+          {selectedFileId && ocrResult ? (
+            <div className="space-y-4">
+              <MarkdownPreview
+                title={`${t('results.viewMarkdown')} - ${ocrResult.filename}`}
+                content={ocrResult.markdown_content}
+              />
+              <div className="text-sm text-muted-foreground space-y-1">
+                <p>
+                  {t('results.confidence')}: {((ocrResult.confidence || 0) * 100).toFixed(2)}%
+                </p>
+                <p>
+                  {t('results.processingTime')}: {(ocrResult.processing_time || 0).toFixed(2)}s
+                </p>
+                <p>
+                  {t('results.textBlocks')}: {ocrResult.json_data?.total_text_regions || 0}
+                </p>
+              </div>
+            </div>
+          ) : (
+            <div className="h-full flex items-center justify-center border rounded-lg bg-muted/50">
+              <p className="text-muted-foreground">
+                {isLoadingResult ? t('common.loading') : '選擇檔案以查看結果'}
+              </p>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  )
+}
--- a/frontend/src/pages/SettingsPage.tsx
+++ b/frontend/src/pages/SettingsPage.tsx
@@ -0,0 +1,325 @@
+import { useState } from 'react'
+import { useTranslation } from 'react-i18next'
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { useToast } from '@/components/ui/toast'
+import { apiClient } from '@/services/api'
+import type { ExportRule } from '@/types/api'
+
+export default function SettingsPage() {
+  const { t } = useTranslation()
+  const { toast } = useToast()
+  const queryClient = useQueryClient()
+
+  const [isCreating, setIsCreating] = useState(false)
+  const [editingRule, setEditingRule] = useState<ExportRule | null>(null)
+  const [formData, setFormData] = useState({
+    rule_name: '',
+    confidence_threshold: 0.5,
+    include_metadata: true,
+    filename_pattern: '{filename}_ocr',
+    css_template: 'default',
+  })
+
+  // Fetch export rules
+  const { data: exportRules, isLoading } = useQuery({
+    queryKey: ['exportRules'],
+    queryFn: () => apiClient.getExportRules(),
+  })
+
+  // Create rule mutation
+  const createRuleMutation = useMutation({
+    mutationFn: (rule: any) => apiClient.createExportRule(rule),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['exportRules'] })
+      setIsCreating(false)
+      resetForm()
+      toast({
+        title: t('common.success'),
+        description: '規則已建立',
+        variant: 'success',
+      })
+    },
+    onError: (error: any) => {
+      toast({
+        title: t('common.error'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    },
+  })
+
+  // Update rule mutation
+  const updateRuleMutation = useMutation({
+    mutationFn: ({ ruleId, rule }: { ruleId: number; rule: any }) =>
+      apiClient.updateExportRule(ruleId, rule),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['exportRules'] })
+      setEditingRule(null)
+      resetForm()
+      toast({
+        title: t('common.success'),
+        description: '規則已更新',
+        variant: 'success',
+      })
+    },
+    onError: (error: any) => {
+      toast({
+        title: t('common.error'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    },
+  })
+
+  // Delete rule mutation
+  const deleteRuleMutation = useMutation({
+    mutationFn: (ruleId: number) => apiClient.deleteExportRule(ruleId),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['exportRules'] })
+      toast({
+        title: t('common.success'),
+        description: '規則已刪除',
+        variant: 'success',
+      })
+    },
+    onError: (error: any) => {
+      toast({
+        title: t('common.error'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    },
+  })
+
+  const resetForm = () => {
+    setFormData({
+      rule_name: '',
+      confidence_threshold: 0.5,
+      include_metadata: true,
+      filename_pattern: '{filename}_ocr',
+      css_template: 'default',
+    })
+  }
+
+  const handleCreate = () => {
+    setIsCreating(true)
+    setEditingRule(null)
+    resetForm()
+  }
+
+  const handleEdit = (rule: ExportRule) => {
+    setEditingRule(rule)
+    setIsCreating(false)
+    setFormData({
+      rule_name: rule.rule_name,
+      confidence_threshold: rule.config_json.confidence_threshold || 0.5,
+      include_metadata: rule.config_json.include_metadata || true,
+      filename_pattern: rule.config_json.filename_pattern || '{filename}_ocr',
+      css_template: rule.css_template || 'default',
+    })
+  }
+
+  const handleSave = () => {
+    const ruleData = {
+      rule_name: formData.rule_name,
+      config_json: {
+        confidence_threshold: formData.confidence_threshold,
+        include_metadata: formData.include_metadata,
+        filename_pattern: formData.filename_pattern,
+      },
+      css_template: formData.css_template,
+    }
+
+    if (editingRule) {
+      updateRuleMutation.mutate({ ruleId: editingRule.id, rule: ruleData })
+    } else {
+      createRuleMutation.mutate(ruleData)
+    }
+  }
+
+  const handleCancel = () => {
+    setIsCreating(false)
+    setEditingRule(null)
+    resetForm()
+  }
+
+  const handleDelete = (ruleId: number) => {
+    if (window.confirm('確定要刪除此規則嗎？')) {
+      deleteRuleMutation.mutate(ruleId)
+    }
+  }
+
+  return (
+    <div className="max-w-4xl mx-auto space-y-6">
+      <div className="flex items-center justify-between">
+        <h1 className="text-3xl font-bold text-foreground">{t('settings.title')}</h1>
+        {!isCreating && !editingRule && (
+          <Button onClick={handleCreate}>{t('export.rules.newRule')}</Button>
+        )}
+      </div>
+
+      {/* Create/Edit Form */}
+      {(isCreating || editingRule) && (
+        <Card>
+          <CardHeader>
+            <CardTitle>
+              {editingRule ? t('common.edit') + ' ' + t('export.rules.title') : t('export.rules.newRule')}
+            </CardTitle>
+          </CardHeader>
+          <CardContent className="space-y-4">
+            {/* Rule Name */}
+            <div>
+              <label className="block text-sm font-medium text-foreground mb-2">
+                {t('export.rules.ruleName')}
+              </label>
+              <input
+                type="text"
+                value={formData.rule_name}
+                onChange={(e) => setFormData((prev) => ({ ...prev, rule_name: e.target.value }))}
+                className="w-full px-3 py-2 border border-gray-200 rounded-md bg-background text-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+                placeholder="例如：高信心度匯出"
+              />
+            </div>
+
+            {/* Confidence Threshold */}
+            <div>
+              <label className="block text-sm font-medium text-foreground mb-2">
+                {t('export.options.confidenceThreshold')}: {formData.confidence_threshold}
+              </label>
+              <input
+                type="range"
+                min="0"
+                max="1"
+                step="0.05"
+                value={formData.confidence_threshold}
+                onChange={(e) =>
+                  setFormData((prev) => ({
+                    ...prev,
+                    confidence_threshold: Number(e.target.value),
+                  }))
+                }
+                className="w-full"
+              />
+            </div>
+
+            {/* Include Metadata */}
+            <div className="flex items-center space-x-2">
+              <input
+                type="checkbox"
+                id="include-metadata-form"
+                checked={formData.include_metadata}
+                onChange={(e) =>
+                  setFormData((prev) => ({
+                    ...prev,
+                    include_metadata: e.target.checked,
+                  }))
+                }
+                className="w-4 h-4 border border-gray-200 rounded"
+              />
+              <label htmlFor="include-metadata-form" className="text-sm font-medium text-foreground">
+                {t('export.options.includeMetadata')}
+              </label>
+            </div>
+
+            {/* Filename Pattern */}
+            <div>
+              <label className="block text-sm font-medium text-foreground mb-2">
+                {t('export.options.filenamePattern')}
+              </label>
+              <input
+                type="text"
+                value={formData.filename_pattern}
+                onChange={(e) =>
+                  setFormData((prev) => ({
+                    ...prev,
+                    filename_pattern: e.target.value,
+                  }))
+                }
+                className="w-full px-3 py-2 border border-gray-200 rounded-md bg-background text-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+                placeholder="{filename}_ocr"
+              />
+            </div>
+
+            {/* CSS Template */}
+            <div>
+              <label className="block text-sm font-medium text-foreground mb-2">
+                {t('export.options.cssTemplate')}
+              </label>
+              <select
+                value={formData.css_template}
+                onChange={(e) => setFormData((prev) => ({ ...prev, css_template: e.target.value }))}
+                className="w-full px-3 py-2 border border-gray-200 rounded-md bg-background text-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+              >
+                <option value="default">預設</option>
+                <option value="academic">學術</option>
+                <option value="business">商務</option>
+                <option value="report">報告</option>
+              </select>
+            </div>
+
+            {/* Actions */}
+            <div className="flex justify-end gap-3 pt-4">
+              <Button variant="outline" onClick={handleCancel}>
+                {t('common.cancel')}
+              </Button>
+              <Button
+                onClick={handleSave}
+                disabled={!formData.rule_name || createRuleMutation.isPending || updateRuleMutation.isPending}
+              >
+                {createRuleMutation.isPending || updateRuleMutation.isPending
+                  ? t('common.loading')
+                  : t('common.save')}
+              </Button>
+            </div>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* Rules List */}
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('export.rules.title')}</CardTitle>
+        </CardHeader>
+        <CardContent>
+          {isLoading ? (
+            <p className="text-center text-muted-foreground py-8">{t('common.loading')}</p>
+          ) : exportRules && exportRules.length > 0 ? (
+            <div className="space-y-3">
+              {exportRules.map((rule) => (
+                <div
+                  key={rule.id}
+                  className="flex items-center justify-between p-4 border border-gray-200 rounded-lg"
+                >
+                  <div>
+                    <h3 className="font-medium text-foreground">{rule.rule_name}</h3>
+                    <p className="text-sm text-muted-foreground">
+                      信心度閾值: {rule.config_json.confidence_threshold || 0.5} | CSS 樣板:{' '}
+                      {rule.css_template || 'default'}
+                    </p>
+                  </div>
+                  <div className="flex gap-2">
+                    <Button variant="outline" size="sm" onClick={() => handleEdit(rule)}>
+                      {t('common.edit')}
+                    </Button>
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      onClick={() => handleDelete(rule.id)}
+                      disabled={deleteRuleMutation.isPending}
+                    >
+                      {t('common.delete')}
+                    </Button>
+                  </div>
+                </div>
+              ))}
+            </div>
+          ) : (
+            <p className="text-center text-muted-foreground py-8">尚無匯出規則</p>
+          )}
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
--- a/frontend/src/pages/UploadPage.tsx
+++ b/frontend/src/pages/UploadPage.tsx
@@ -0,0 +1,140 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useTranslation } from 'react-i18next'
+import { useMutation } from '@tanstack/react-query'
+import FileUpload from '@/components/FileUpload'
+import { Button } from '@/components/ui/button'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { useToast } from '@/components/ui/toast'
+import { useUploadStore } from '@/store/uploadStore'
+import { apiClient } from '@/services/api'
+
+export default function UploadPage() {
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+  const { toast } = useToast()
+  const [selectedFiles, setSelectedFiles] = useState<File[]>([])
+  const { setBatchId, setFiles, setUploadProgress } = useUploadStore()
+
+  const uploadMutation = useMutation({
+    mutationFn: (files: File[]) => apiClient.uploadFiles(files),
+    onSuccess: (data) => {
+      setBatchId(data.batch_id)
+      setFiles(data.files)
+      toast({
+        title: t('upload.uploadSuccess'),
+        description: t('upload.fileCount', { count: data.files.length }),
+        variant: 'success',
+      })
+      navigate('/processing')
+    },
+    onError: (error: any) => {
+      toast({
+        title: t('upload.uploadError'),
+        description: error.response?.data?.detail || t('errors.networkError'),
+        variant: 'destructive',
+      })
+    },
+  })
+
+  const handleFilesSelected = (files: File[]) => {
+    setSelectedFiles((prev) => [...prev, ...files])
+  }
+
+  const handleRemoveFile = (index: number) => {
+    setSelectedFiles((prev) => prev.filter((_, i) => i !== index))
+  }
+
+  const handleClearAll = () => {
+    setSelectedFiles([])
+    setUploadProgress(0)
+  }
+
+  const handleUpload = () => {
+    if (selectedFiles.length === 0) {
+      toast({
+        title: t('errors.validationError'),
+        description: '請選擇至少一個檔案',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    uploadMutation.mutate(selectedFiles)
+  }
+
+  const formatFileSize = (bytes: number) => {
+    if (bytes === 0) return '0 Bytes'
+    const k = 1024
+    const sizes = ['Bytes', 'KB', 'MB', 'GB']
+    const i = Math.floor(Math.log(bytes) / Math.log(k))
+    return Math.round(bytes / Math.pow(k, i) * 100) / 100 + ' ' + sizes[i]
+  }
+
+  return (
+    <div className="max-w-4xl mx-auto space-y-6">
+      <div>
+        <h1 className="text-3xl font-bold text-foreground mb-2">{t('upload.title')}</h1>
+        <p className="text-muted-foreground">
+          選擇要進行 OCR 處理的檔案，支援圖片、PDF 和 Office 文件
+        </p>
+      </div>
+
+      <FileUpload
+        onFilesSelected={handleFilesSelected}
+        disabled={uploadMutation.isPending}
+      />
+
+      {selectedFiles.length > 0 && (
+        <Card>
+          <CardHeader>
+            <div className="flex items-center justify-between">
+              <CardTitle className="text-lg">
+                {t('upload.selectedFiles')} ({selectedFiles.length})
+              </CardTitle>
+              <Button variant="outline" size="sm" onClick={handleClearAll}>
+                {t('upload.clearAll')}
+              </Button>
+            </div>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-2">
+              {selectedFiles.map((file, index) => (
+                <div
+                  key={index}
+                  className="flex items-center justify-between p-3 bg-muted rounded-md"
+                >
+                  <div className="flex-1 min-w-0">
+                    <p className="text-sm font-medium text-foreground truncate">{file.name}</p>
+                    <p className="text-xs text-muted-foreground">{formatFileSize(file.size)}</p>
+                  </div>
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    onClick={() => handleRemoveFile(index)}
+                    disabled={uploadMutation.isPending}
+                  >
+                    {t('upload.removeFile')}
+                  </Button>
+                </div>
+              ))}
+            </div>
+
+            <div className="mt-6 flex justify-end gap-3">
+              <Button
+                variant="outline"
+                onClick={handleClearAll}
+                disabled={uploadMutation.isPending}
+              >
+                {t('common.cancel')}
+              </Button>
+              <Button onClick={handleUpload} disabled={uploadMutation.isPending}>
+                {uploadMutation.isPending ? t('upload.uploading') : t('upload.uploadButton')}
+              </Button>
+            </div>
+          </CardContent>
+        </Card>
+      )}
+    </div>
+  )
+}
--- a/frontend/src/services/api.ts
+++ b/frontend/src/services/api.ts
@@ -0,0 +1,279 @@
+import axios, { AxiosError } from 'axios'
+import type { AxiosInstance } from 'axios'
+import type {
+  LoginRequest,
+  LoginResponse,
+  UploadResponse,
+  ProcessRequest,
+  ProcessResponse,
+  TaskStatus,
+  BatchStatus,
+  OCRResult,
+  ExportRequest,
+  ExportRule,
+  CSSTemplate,
+  TranslateRequest,
+  TranslateResponse,
+  TranslationConfig,
+  ApiError,
+} from '@/types/api'
+
+/**
+ * API Client Configuration
+ */
+const API_BASE_URL = import.meta.env.VITE_API_BASE_URL || 'http://localhost:12010'
+const API_VERSION = 'v1'
+
+class ApiClient {
+  private client: AxiosInstance
+  private token: string | null = null
+
+  constructor() {
+    this.client = axios.create({
+      baseURL: `${API_BASE_URL}/api/${API_VERSION}`,
+      timeout: 30000,
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    })
+
+    // Request interceptor to add auth token
+    this.client.interceptors.request.use(
+      (config) => {
+        if (this.token) {
+          config.headers.Authorization = `Bearer ${this.token}`
+        }
+        return config
+      },
+      (error) => Promise.reject(error)
+    )
+
+    // Response interceptor for error handling
+    this.client.interceptors.response.use(
+      (response) => response,
+      (error: AxiosError<ApiError>) => {
+        if (error.response?.status === 401) {
+          // Token expired or invalid
+          this.clearToken()
+          window.location.href = '/login'
+        }
+        return Promise.reject(error)
+      }
+    )
+
+    // Load token from localStorage
+    this.loadToken()
+  }
+
+  /**
+   * Set authentication token
+   */
+  setToken(token: string) {
+    this.token = token
+    localStorage.setItem('auth_token', token)
+  }
+
+  /**
+   * Clear authentication token
+   */
+  clearToken() {
+    this.token = null
+    localStorage.removeItem('auth_token')
+  }
+
+  /**
+   * Load token from localStorage
+   */
+  private loadToken() {
+    const token = localStorage.getItem('auth_token')
+    if (token) {
+      this.token = token
+    }
+  }
+
+  /**
+   * Check if user is authenticated
+   */
+  isAuthenticated(): boolean {
+    return this.token !== null
+  }
+
+  // ==================== Authentication ====================
+
+  /**
+   * Login
+   */
+  async login(data: LoginRequest): Promise<LoginResponse> {
+    const response = await this.client.post<LoginResponse>('/auth/login', {
+      username: data.username,
+      password: data.password,
+    })
+
+    this.setToken(response.data.access_token)
+    return response.data
+  }
+
+  /**
+   * Logout
+   */
+  logout() {
+    this.clearToken()
+  }
+
+  // ==================== File Upload ====================
+
+  /**
+   * Upload files
+   */
+  async uploadFiles(files: File[]): Promise<UploadResponse> {
+    const formData = new FormData()
+    files.forEach((file) => {
+      formData.append('files', file)
+    })
+
+    const response = await this.client.post<UploadResponse>('/upload', formData, {
+      headers: {
+        'Content-Type': 'multipart/form-data',
+      },
+    })
+
+    return response.data
+  }
+
+  // ==================== OCR Processing ====================
+
+  /**
+   * Process OCR
+   */
+  async processOCR(data: ProcessRequest): Promise<ProcessResponse> {
+    const response = await this.client.post<ProcessResponse>('/ocr/process', data)
+    return response.data
+  }
+
+  /**
+   * Get task status
+   */
+  async getTaskStatus(taskId: string): Promise<TaskStatus> {
+    const response = await this.client.get<TaskStatus>(`/ocr/status/${taskId}`)
+    return response.data
+  }
+
+  /**
+   * Get OCR result
+   */
+  async getOCRResult(taskId: string): Promise<OCRResult> {
+    const response = await this.client.get<OCRResult>(`/ocr/result/${taskId}`)
+    return response.data
+  }
+
+  /**
+   * Get batch status
+   */
+  async getBatchStatus(batchId: number): Promise<BatchStatus> {
+    const response = await this.client.get<BatchStatus>(`/batch/${batchId}/status`)
+    return response.data
+  }
+
+  // ==================== Export ====================
+
+  /**
+   * Export results
+   */
+  async exportResults(data: ExportRequest): Promise<Blob> {
+    const response = await this.client.post('/export', data, {
+      responseType: 'blob',
+    })
+    return response.data
+  }
+
+  /**
+   * Generate and download PDF
+   */
+  async exportPDF(fileId: number, cssTemplate?: string): Promise<Blob> {
+    const params = cssTemplate ? { css_template: cssTemplate } : {}
+    const response = await this.client.get(`/export/pdf/${fileId}`, {
+      params,
+      responseType: 'blob',
+    })
+    return response.data
+  }
+
+  /**
+   * Get export rules
+   */
+  async getExportRules(): Promise<ExportRule[]> {
+    const response = await this.client.get<ExportRule[]>('/export/rules')
+    return response.data
+  }
+
+  /**
+   * Create export rule
+   */
+  async createExportRule(rule: Omit<ExportRule, 'id' | 'created_at'>): Promise<ExportRule> {
+    const response = await this.client.post<ExportRule>('/export/rules', rule)
+    return response.data
+  }
+
+  /**
+   * Update export rule
+   */
+  async updateExportRule(ruleId: number, rule: Partial<ExportRule>): Promise<ExportRule> {
+    const response = await this.client.put<ExportRule>(`/export/rules/${ruleId}`, rule)
+    return response.data
+  }
+
+  /**
+   * Delete export rule
+   */
+  async deleteExportRule(ruleId: number): Promise<void> {
+    await this.client.delete(`/export/rules/${ruleId}`)
+  }
+
+  /**
+   * Get CSS templates
+   */
+  async getCSSTemplates(): Promise<CSSTemplate[]> {
+    const response = await this.client.get<CSSTemplate[]>('/export/css-templates')
+    return response.data
+  }
+
+  // ==================== Translation (FUTURE FEATURE - STUB) ====================
+
+  /**
+   * Translate document (STUB - Not yet implemented)
+   * This is a placeholder for future translation functionality
+   * @throws Will throw error with status 501 (Not Implemented)
+   */
+  async translateDocument(data: TranslateRequest): Promise<TranslateResponse> {
+    // This endpoint is expected to return 501 Not Implemented until Phase 5
+    const response = await this.client.post<TranslateResponse>('/translate/document', data)
+    return response.data
+  }
+
+  /**
+   * Get translation configs (STUB - Not yet implemented)
+   * This is a placeholder for future translation functionality
+   * @throws Will throw error with status 501 (Not Implemented)
+   */
+  async getTranslationConfigs(): Promise<TranslationConfig[]> {
+    // This endpoint is expected to return 501 Not Implemented until Phase 5
+    const response = await this.client.get<TranslationConfig[]>('/translate/configs')
+    return response.data
+  }
+
+  /**
+   * Create translation config (STUB - Not yet implemented)
+   * This is a placeholder for future translation functionality
+   * @throws Will throw error with status 501 (Not Implemented)
+   */
+  async createTranslationConfig(
+    config: Omit<TranslationConfig, 'id' | 'created_at'>
+  ): Promise<TranslationConfig> {
+    // This endpoint is expected to return 501 Not Implemented until Phase 5
+    const response = await this.client.post<TranslationConfig>('/translate/configs', config)
+    return response.data
+  }
+}
+
+// Export singleton instance
+export const apiClient = new ApiClient()
--- a/frontend/src/store/authStore.ts
+++ b/frontend/src/store/authStore.ts
@@ -0,0 +1,36 @@
+import { create } from 'zustand'
+import { persist } from 'zustand/middleware'
+import type { User } from '@/types/api'
+
+interface AuthState {
+  user: User | null
+  isAuthenticated: boolean
+  setUser: (user: User | null) => void
+  logout: () => void
+}
+
+/**
+ * Authentication Store
+ * Persisted to localStorage
+ */
+export const useAuthStore = create<AuthState>()(
+  persist(
+    (set) => ({
+      user: null,
+      isAuthenticated: false,
+      setUser: (user) =>
+        set({
+          user,
+          isAuthenticated: user !== null,
+        }),
+      logout: () =>
+        set({
+          user: null,
+          isAuthenticated: false,
+        }),
+    }),
+    {
+      name: 'auth-storage',
+    }
+  )
+)
--- a/frontend/src/store/uploadStore.ts
+++ b/frontend/src/store/uploadStore.ts
@@ -0,0 +1,53 @@
+import { create } from 'zustand'
+import { persist } from 'zustand/middleware'
+import type { FileInfo } from '@/types/api'
+
+interface UploadState {
+  batchId: number | null
+  files: FileInfo[]
+  uploadProgress: number
+  setBatchId: (id: number) => void
+  setFiles: (files: FileInfo[]) => void
+  setUploadProgress: (progress: number) => void
+  updateFileStatus: (fileId: number, status: FileInfo['status']) => void
+  clearUpload: () => void
+}
+
+/**
+ * Upload Store
+ * Manages file upload state with localStorage persistence
+ */
+export const useUploadStore = create<UploadState>()(
+  persist(
+    (set) => ({
+      batchId: null,
+      files: [],
+      uploadProgress: 0,
+      setBatchId: (id) => {
+        set({ batchId: id })
+      },
+      setFiles: (files) => set({ files }),
+      setUploadProgress: (progress) => set({ uploadProgress: progress }),
+      updateFileStatus: (fileId, status) =>
+        set((state) => ({
+          files: state.files.map((file) =>
+            file.id === fileId ? { ...file, status } : file
+          ),
+        })),
+      clearUpload: () =>
+        set({
+          batchId: null,
+          files: [],
+          uploadProgress: 0,
+        }),
+    }),
+    {
+      name: 'tool-ocr-upload-store',
+      // Only persist batchId and files, not upload progress
+      partialize: (state) => ({
+        batchId: state.batchId,
+        files: state.files,
+      }),
+    }
+  )
+)
--- a/frontend/src/types/api.ts
+++ b/frontend/src/types/api.ts
@@ -0,0 +1,174 @@
+/**
+ * API Type Definitions
+ * Based on backend OpenAPI specification
+ */
+
+// Authentication
+export interface LoginRequest {
+  username: string
+  password: string
+}
+
+export interface LoginResponse {
+  access_token: string
+  token_type: string
+}
+
+export interface User {
+  id: number
+  username: string
+}
+
+// File Upload
+export interface UploadResponse {
+  batch_id: number
+  files: FileInfo[]
+}
+
+export interface FileInfo {
+  id: number
+  filename: string
+  file_size: number
+  format: string
+  status: 'pending' | 'processing' | 'completed' | 'failed'
+}
+
+// OCR Processing
+export interface ProcessRequest {
+  batch_id: number
+  lang?: string
+  confidence_threshold?: number
+}
+
+export interface ProcessResponse {
+  task_id: string
+  batch_id: number
+  status: string
+}
+
+export interface TaskStatus {
+  task_id: string
+  status: 'pending' | 'processing' | 'completed' | 'failed'
+  progress_percentage: number
+  current_file?: string
+  files_processed: number
+  total_files: number
+  error?: string
+}
+
+export interface BatchStatus {
+  batch: {
+    id: number
+    status: 'pending' | 'processing' | 'completed' | 'failed'
+    progress_percentage: number
+    created_at: string
+    completed_at?: string
+  }
+  files: FileResult[]
+}
+
+export interface FileResult {
+  id: number
+  filename: string
+  status: 'pending' | 'processing' | 'completed' | 'failed'
+  processing_time?: number
+  error?: string
+}
+
+// OCR Results
+export interface OCRResult {
+  file_id: number
+  filename: string
+  status: string
+  markdown_content: string
+  json_data: OCRJsonData
+  confidence: number
+  processing_time: number
+}
+
+export interface OCRJsonData {
+  total_text_regions: number
+  average_confidence: number
+  text_blocks: TextBlock[]
+  layout_info?: LayoutInfo
+}
+
+export interface TextBlock {
+  text: string
+  confidence: number
+  bbox: [number, number, number, number]
+  position: number
+}
+
+export interface LayoutInfo {
+  tables_detected: number
+  images_detected: number
+  structure: string
+}
+
+// Export
+export interface ExportRequest {
+  batch_id: number
+  format: 'txt' | 'json' | 'excel' | 'markdown' | 'pdf'
+  rule_id?: number
+  options?: ExportOptions
+}
+
+export interface ExportOptions {
+  confidence_threshold?: number
+  include_metadata?: boolean
+  filename_pattern?: string
+  css_template?: string
+}
+
+export interface ExportRule {
+  id: number
+  rule_name: string
+  config_json: Record<string, any>
+  css_template?: string
+  created_at: string
+}
+
+export interface CSSTemplate {
+  name: string
+  description: string
+  filename: string
+}
+
+// Translation (FUTURE FEATURE)
+export interface TranslateRequest {
+  file_id: number
+  source_lang: string
+  target_lang: string
+  engine_type?: 'argos' | 'ernie' | 'google'
+}
+
+export interface TranslateResponse {
+  task_id: string
+  file_id: number
+  status: 'pending' | 'processing' | 'completed' | 'failed'
+  translated_content?: string
+}
+
+export interface TranslationConfig {
+  id: number
+  source_lang: string
+  target_lang: string
+  engine_type: 'argos' | 'ernie' | 'google'
+  engine_config: Record<string, any>
+  created_at: string
+}
+
+// API Response
+export interface ApiResponse<T = any> {
+  success: boolean
+  data?: T
+  error?: string
+  message?: string
+}
+
+// Error Response
+export interface ApiError {
+  detail: string
+  status_code: number
+}
--- a/frontend/tailwind.config.js
+++ b/frontend/tailwind.config.js
@@ -0,0 +1,52 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    "./index.html",
+    "./src/**/*.{js,ts,jsx,tsx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        border: "hsl(var(--border))",
+        input: "hsl(var(--input))",
+        ring: "hsl(var(--ring))",
+        background: "hsl(var(--background))",
+        foreground: "hsl(var(--foreground))",
+        primary: {
+          DEFAULT: "hsl(var(--primary))",
+          foreground: "hsl(var(--primary-foreground))",
+        },
+        secondary: {
+          DEFAULT: "hsl(var(--secondary))",
+          foreground: "hsl(var(--secondary-foreground))",
+        },
+        destructive: {
+          DEFAULT: "hsl(var(--destructive))",
+          foreground: "hsl(var(--destructive-foreground))",
+        },
+        muted: {
+          DEFAULT: "hsl(var(--muted))",
+          foreground: "hsl(var(--muted-foreground))",
+        },
+        accent: {
+          DEFAULT: "hsl(var(--accent))",
+          foreground: "hsl(var(--accent-foreground))",
+        },
+        popover: {
+          DEFAULT: "hsl(var(--popover))",
+          foreground: "hsl(var(--popover-foreground))",
+        },
+        card: {
+          DEFAULT: "hsl(var(--card))",
+          foreground: "hsl(var(--card-foreground))",
+        },
+      },
+      borderRadius: {
+        lg: "var(--radius)",
+        md: "calc(var(--radius) - 2px)",
+        sm: "calc(var(--radius) - 4px)",
+      },
+    },
+  },
+  plugins: [],
+}
--- a/frontend/tsconfig.app.json
+++ b/frontend/tsconfig.app.json
@@ -0,0 +1,34 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2022",
+    "useDefineForClassFields": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "types": ["vite/client"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true,
+
+    /* Path Mapping */
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": ["src"]
+}
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}
--- a/frontend/tsconfig.node.json
+++ b/frontend/tsconfig.node.json
@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ES2023",
+    "lib": ["ES2023"],
+    "module": "ESNext",
+    "types": ["node"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["vite.config.ts"]
+}
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -0,0 +1,22 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import path from 'path'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 12011,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:12010',
+        changeOrigin: true,
+      },
+    },
+  },
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
+})
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