Initial commit with Phase 0 Scaffolding

2026-06-10 18:28:17 -07:00 · 2026-06-10 18:28:17 -07:00 · c545d4b17d
commit c545d4b17d
parent b393607602
51 changed files with 7064 additions and 4 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/Dockerfile
+++ b/frontend/Dockerfile
@ -0,0 +1,24 @@
+# Stage 1: Build the SPA
+FROM node:22-alpine AS build
+
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+# Stage 2: Serve via nginx
+FROM nginx:alpine
+
+# Remove default nginx config
+RUN rm /etc/nginx/conf.d/default.conf
+
+# Copy our nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Copy built SPA from build stage
+COPY --from=build /app/dist /usr/share/nginx/html
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]
--- 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 [Oxc](https://oxc.rs)
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
+
+## 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 +1,22 @@
+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.flat.recommended,
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      globals: globals.browser,
+    },
+  },
+])
--- a/frontend/index.html
+++ b/frontend/index.html
@ -0,0 +1,14 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="description" content="PaperJet — Self-hosted PDF editor. Annotate, sign, and export PDFs from your own server." />
+    <title>PaperJet</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@ -0,0 +1,57 @@
+server {
+    listen 80;
+    server_name _;
+
+    # Match MAX_UPLOAD_MB — raise in both this and the outer reverse proxy
+    client_max_body_size 200m;
+
+    # Security headers
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "DENY" always;
+    add_header Referrer-Policy "no-referrer" always;
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self' blob: 'wasm-unsafe-eval'; worker-src 'self' blob:; style-src 'self' 'unsafe-inline'; img-src 'self' blob: data:; font-src 'self' data:; connect-src 'self';" always;
+
+    # SPA: serve index.html for all non-file routes (history API fallback)
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Proxy /api/ to the backend container
+    location /api/ {
+        proxy_pass http://backend:8000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+
+        # Pass through auth cookies and CSRF header
+        proxy_pass_header Set-Cookie;
+        proxy_set_header Cookie $http_cookie;
+        proxy_set_header X-Requested-With $http_x_requested_with;
+
+        # Timeouts for large uploads/exports
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 120s;
+        proxy_read_timeout 120s;
+
+        # Upload size (must match client_max_body_size)
+        client_max_body_size 200m;
+    }
+
+    # Cache static assets
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+        try_files $uri =404;
+    }
+
+    # Disable access to hidden files
+    location ~ /\. {
+        deny all;
+        access_log off;
+        log_not_found off;
+    }
+}
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
--- a/frontend/package.json
+++ b/frontend/package.json
@ -0,0 +1,44 @@
+{
+  "name": "paperjet",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "typecheck": "tsc -b --noEmit",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tailwindcss/vite": "^4.3.0",
+    "fabric": "^7.4.0",
+    "pdfjs-dist": "^6.0.227",
+    "react": "^19.2.6",
+    "react-dom": "^19.2.6",
+    "react-router-dom": "^7.17.0",
+    "tailwindcss": "^4.3.0",
+    "zustand": "^5.0.14"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@types/fabric": "^5.3.11",
+    "@types/node": "^24.12.3",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.1",
+    "eslint": "^10.3.0",
+    "eslint-plugin-react-hooks": "^7.1.1",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17.6.0",
+    "jsdom": "^29.1.1",
+    "typescript": "~6.0.2",
+    "typescript-eslint": "^8.59.2",
+    "vite": "^8.0.12",
+    "vitest": "^4.1.8"
+  }
+}
--- a/frontend/public/favicon.svg
+++ b/frontend/public/favicon.svg
--- a/frontend/public/icons.svg
+++ b/frontend/public/icons.svg
@ -0,0 +1,24 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+  <symbol id="bluesky-icon" viewBox="0 0 16 17">
+    <g clip-path="url(#bluesky-clip)"><path fill="#08060d" d="M7.75 7.735c-.693-1.348-2.58-3.86-4.334-5.097-1.68-1.187-2.32-.981-2.74-.79C.188 2.065.1 2.812.1 3.251s.241 3.602.398 4.13c.52 1.744 2.367 2.333 4.07 2.145-2.495.37-4.71 1.278-1.805 4.512 3.196 3.309 4.38-.71 4.987-2.746.608 2.036 1.307 5.91 4.93 2.746 2.72-2.746.747-4.143-1.747-4.512 1.702.189 3.55-.4 4.07-2.145.156-.528.397-3.691.397-4.13s-.088-1.186-.575-1.406c-.42-.19-1.06-.395-2.741.79-1.755 1.24-3.64 3.752-4.334 5.099"/></g>
+    <defs><clipPath id="bluesky-clip"><path fill="#fff" d="M.1.85h15.3v15.3H.1z"/></clipPath></defs>
+  </symbol>
+  <symbol id="discord-icon" viewBox="0 0 20 19">
+    <path fill="#08060d" d="M16.224 3.768a14.5 14.5 0 0 0-3.67-1.153c-.158.286-.343.67-.47.976a13.5 13.5 0 0 0-4.067 0c-.128-.306-.317-.69-.476-.976A14.4 14.4 0 0 0 3.868 3.77C1.546 7.28.916 10.703 1.231 14.077a14.7 14.7 0 0 0 4.5 2.306q.545-.748.965-1.587a9.5 9.5 0 0 1-1.518-.74q.191-.14.372-.293c2.927 1.369 6.107 1.369 8.999 0q.183.152.372.294-.723.437-1.52.74.418.838.963 1.588a14.6 14.6 0 0 0 4.504-2.308c.37-3.911-.63-7.302-2.644-10.309m-9.13 8.234c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.894 0 1.614.82 1.599 1.82.001 1-.705 1.82-1.6 1.82m5.91 0c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.893 0 1.614.82 1.599 1.82 0 1-.706 1.82-1.6 1.82"/>
+  </symbol>
+  <symbol id="documentation-icon" viewBox="0 0 21 20">
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="m15.5 13.333 1.533 1.322c.645.555.967.833.967 1.178s-.322.623-.967 1.179L15.5 18.333m-3.333-5-1.534 1.322c-.644.555-.966.833-.966 1.178s.322.623.966 1.179l1.534 1.321"/>
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M17.167 10.836v-4.32c0-1.41 0-2.117-.224-2.68-.359-.906-1.118-1.621-2.08-1.96-.599-.21-1.349-.21-2.848-.21-2.623 0-3.935 0-4.983.369-1.684.591-3.013 1.842-3.641 3.428C3 6.449 3 7.684 3 10.154v2.122c0 2.558 0 3.838.706 4.726q.306.383.713.671c.76.536 1.79.64 3.581.66"/>
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M3 10a2.78 2.78 0 0 1 2.778-2.778c.555 0 1.209.097 1.748-.047.48-.129.854-.503.982-.982.145-.54.048-1.194.048-1.749a2.78 2.78 0 0 1 2.777-2.777"/>
+  </symbol>
+  <symbol id="github-icon" viewBox="0 0 19 19">
+    <path fill="#08060d" fill-rule="evenodd" d="M9.356 1.85C5.05 1.85 1.57 5.356 1.57 9.694a7.84 7.84 0 0 0 5.324 7.44c.387.079.528-.168.528-.376 0-.182-.013-.805-.013-1.454-2.165.467-2.616-.935-2.616-.935-.349-.91-.864-1.143-.864-1.143-.71-.48.051-.48.051-.48.787.051 1.2.805 1.2.805.695 1.194 1.817.857 2.268.649.064-.507.27-.857.49-1.052-1.728-.182-3.545-.857-3.545-3.87 0-.857.31-1.558.8-2.104-.078-.195-.349-1 .077-2.078 0 0 .657-.208 2.14.805a7.5 7.5 0 0 1 1.946-.26c.657 0 1.328.092 1.946.26 1.483-1.013 2.14-.805 2.14-.805.426 1.078.155 1.883.078 2.078.502.546.799 1.247.799 2.104 0 3.013-1.818 3.675-3.558 3.87.284.247.528.714.528 1.454 0 1.052-.012 1.896-.012 2.156 0 .208.142.455.528.377a7.84 7.84 0 0 0 5.324-7.441c.013-4.338-3.48-7.844-7.773-7.844" clip-rule="evenodd"/>
+  </symbol>
+  <symbol id="social-icon" viewBox="0 0 20 20">
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M12.5 6.667a4.167 4.167 0 1 0-8.334 0 4.167 4.167 0 0 0 8.334 0"/>
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+  </symbol>
+  <symbol id="x-icon" viewBox="0 0 19 19">
+    <path fill="#08060d" fill-rule="evenodd" d="M1.893 1.98c.052.072 1.245 1.769 2.653 3.77l2.892 4.114c.183.261.333.48.333.486s-.068.089-.152.183l-.522.593-.765.867-3.597 4.087c-.375.426-.734.834-.798.905a1 1 0 0 0-.118.148c0 .01.236.017.664.017h.663l.729-.83c.4-.457.796-.906.879-.999a692 692 0 0 0 1.794-2.038c.034-.037.301-.34.594-.675l.551-.624.345-.392a7 7 0 0 1 .34-.374c.006 0 .93 1.306 2.052 2.903l2.084 2.965.045.063h2.275c1.87 0 2.273-.003 2.266-.021-.008-.02-1.098-1.572-3.894-5.547-2.013-2.862-2.28-3.246-2.273-3.266.008-.019.282-.332 2.085-2.38l2-2.274 1.567-1.782c.022-.028-.016-.03-.65-.03h-.674l-.3.342a871 871 0 0 1-1.782 2.025c-.067.075-.405.458-.75.852a100 100 0 0 1-.803.91c-.148.172-.299.344-.99 1.127-.304.343-.32.358-.345.327-.015-.019-.904-1.282-1.976-2.808L6.365 1.85H1.8zm1.782.91 8.078 11.294c.772 1.08 1.413 1.973 1.425 1.984.016.017.241.02 1.05.017l1.03-.004-2.694-3.766L7.796 5.75 5.722 2.852l-1.039-.004-1.039-.004z" clip-rule="evenodd"/>
+  </symbol>
+</svg>
--- a/frontend/src/app/App.tsx
+++ b/frontend/src/app/App.tsx
@ -0,0 +1,23 @@
+import { Routes, Route, Navigate } from 'react-router-dom'
+import { LoginPage } from '../pages/LoginPage'
+import { HomePage } from '../pages/HomePage'
+import { EditorPage } from '../pages/EditorPage'
+
+/**
+ * Root application component with route definitions.
+ *
+ * Routes:
+ * - /login — password entry / first-run setup
+ * - / — home page (recently edited, library, trash)
+ * - /editor/:id — PDF editor workspace
+ */
+export function App() {
+  return (
+    <Routes>
+      <Route path="/login" element={<LoginPage />} />
+      <Route path="/" element={<HomePage />} />
+      <Route path="/editor/:id" element={<EditorPage />} />
+      <Route path="*" element={<Navigate to="/" replace />} />
+    </Routes>
+  )
+}
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@ -0,0 +1,106 @@
+@import "tailwindcss";
+
+/*
+ * PaperJet Design Tokens
+ *
+ * Sejda-inspired: bright, airy, light mode with generous whitespace,
+ * a restrained palette (one accent), soft shadows, rounded corners.
+ */
+@theme {
+  /* Accent color — refined blue */
+  --color-accent-50: oklch(0.97 0.02 250);
+  --color-accent-100: oklch(0.93 0.04 250);
+  --color-accent-200: oklch(0.87 0.08 250);
+  --color-accent-300: oklch(0.78 0.12 250);
+  --color-accent-400: oklch(0.68 0.16 250);
+  --color-accent-500: oklch(0.58 0.19 250);
+  --color-accent-600: oklch(0.50 0.19 250);
+  --color-accent-700: oklch(0.43 0.17 250);
+  --color-accent-800: oklch(0.37 0.14 250);
+  --color-accent-900: oklch(0.30 0.10 250);
+
+  /* Neutrals — warm gray */
+  --color-neutral-50: oklch(0.985 0.002 250);
+  --color-neutral-100: oklch(0.965 0.004 250);
+  --color-neutral-200: oklch(0.925 0.006 250);
+  --color-neutral-300: oklch(0.870 0.008 250);
+  --color-neutral-400: oklch(0.700 0.010 250);
+  --color-neutral-500: oklch(0.550 0.012 250);
+  --color-neutral-600: oklch(0.440 0.012 250);
+  --color-neutral-700: oklch(0.370 0.012 250);
+  --color-neutral-800: oklch(0.270 0.010 250);
+  --color-neutral-900: oklch(0.180 0.008 250);
+
+  /* Semantic */
+  --color-success: oklch(0.60 0.16 145);
+  --color-warning: oklch(0.75 0.16 65);
+  --color-error: oklch(0.58 0.20 25);
+
+  /* Spacing scale */
+  --spacing-xs: 0.25rem;
+  --spacing-sm: 0.5rem;
+  --spacing-md: 1rem;
+  --spacing-lg: 1.5rem;
+  --spacing-xl: 2rem;
+  --spacing-2xl: 3rem;
+
+  /* Border radius */
+  --radius-sm: 0.375rem;
+  --radius-md: 0.5rem;
+  --radius-lg: 0.75rem;
+  --radius-xl: 1rem;
+  --radius-full: 9999px;
+
+  /* Shadows */
+  --shadow-sm: 0 1px 2px 0 oklch(0 0 0 / 0.04);
+  --shadow-md: 0 4px 6px -1px oklch(0 0 0 / 0.06), 0 2px 4px -2px oklch(0 0 0 / 0.04);
+  --shadow-lg: 0 10px 15px -3px oklch(0 0 0 / 0.06), 0 4px 6px -4px oklch(0 0 0 / 0.04);
+  --shadow-xl: 0 20px 25px -5px oklch(0 0 0 / 0.08), 0 8px 10px -6px oklch(0 0 0 / 0.04);
+
+  /* Typography */
+  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
+  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
+
+  /* Transitions */
+  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
+  --duration-fast: 150ms;
+  --duration-normal: 250ms;
+}
+
+/* --- Base styles --- */
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+html {
+  font-family: var(--font-sans);
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+body {
+  margin: 0;
+  background-color: var(--color-neutral-50);
+  color: var(--color-neutral-800);
+  line-height: 1.6;
+}
+
+/* Smooth scrolling */
+html {
+  scroll-behavior: smooth;
+}
+
+/* Focus ring utility */
+:focus-visible {
+  outline: 2px solid var(--color-accent-500);
+  outline-offset: 2px;
+}
+
+/* Selection color */
+::selection {
+  background-color: var(--color-accent-200);
+  color: var(--color-accent-900);
+}
--- a/frontend/src/lib/api/client.ts
+++ b/frontend/src/lib/api/client.ts
@ -0,0 +1,159 @@
+/**
+ * Shared API client for PaperJet backend.
+ *
+ * All API calls go through this module. It handles:
+ * - Base URL prefixing (/api/v1)
+ * - CSRF protection (X-Requested-With header on mutating requests)
+ * - Consistent error handling with the { error: { code, message } } envelope
+ * - 401 → redirect to login
+ */
+
+const BASE_URL = '/api/v1'
+
+/** Error shape returned by the backend */
+export interface ApiError {
+  code: string
+  message: string
+  details?: unknown
+}
+
+/** Custom error class for API failures */
+export class ApiRequestError extends Error {
+  status: number
+  error: ApiError
+
+  constructor(status: number, error: ApiError) {
+    super(error.message)
+    this.name = 'ApiRequestError'
+    this.status = status
+    this.error = error
+  }
+}
+
+/**
+ * Internal fetch wrapper with shared behavior.
+ */
+async function apiFetch<T>(
+  path: string,
+  options: RequestInit = {},
+): Promise<T> {
+  const url = `${BASE_URL}${path}`
+
+  const headers = new Headers(options.headers)
+
+  // CSRF: add X-Requested-With on all mutating requests
+  const method = (options.method ?? 'GET').toUpperCase()
+  if (['POST', 'PUT', 'PATCH', 'DELETE'].includes(method)) {
+    headers.set('X-Requested-With', 'XMLHttpRequest')
+  }
+
+  // Default to JSON content type for non-FormData bodies
+  if (options.body && !(options.body instanceof FormData)) {
+    if (!headers.has('Content-Type')) {
+      headers.set('Content-Type', 'application/json')
+    }
+  }
+
+  const response = await fetch(url, {
+    ...options,
+    headers,
+    credentials: 'same-origin',
+  })
+
+  // Handle 401 — redirect to login
+  if (response.status === 401) {
+    window.location.href = '/login'
+    throw new ApiRequestError(401, {
+      code: 'unauthorized',
+      message: 'Session expired',
+    })
+  }
+
+  // Handle 204 No Content
+  if (response.status === 204) {
+    return undefined as T
+  }
+
+  // Parse response
+  const data = await response.json()
+
+  // Handle error responses
+  if (!response.ok) {
+    const error: ApiError = data.error ?? {
+      code: 'unknown',
+      message: response.statusText,
+    }
+    throw new ApiRequestError(response.status, error)
+  }
+
+  return data as T
+}
+
+// --- Convenience methods ---
+
+export const api = {
+  get: <T>(path: string) => apiFetch<T>(path),
+
+  post: <T>(path: string, body?: unknown) =>
+    apiFetch<T>(path, {
+      method: 'POST',
+      body: body ? JSON.stringify(body) : undefined,
+    }),
+
+  put: <T>(path: string, body?: unknown) =>
+    apiFetch<T>(path, {
+      method: 'PUT',
+      body: body ? JSON.stringify(body) : undefined,
+    }),
+
+  patch: <T>(path: string, body?: unknown) =>
+    apiFetch<T>(path, {
+      method: 'PATCH',
+      body: body ? JSON.stringify(body) : undefined,
+    }),
+
+  delete: <T>(path: string) =>
+    apiFetch<T>(path, { method: 'DELETE' }),
+
+  /** POST with FormData (multipart — for file uploads) */
+  upload: <T>(path: string, formData: FormData) =>
+    apiFetch<T>(path, {
+      method: 'POST',
+      body: formData,
+      // Don't set Content-Type — browser sets it with boundary
+    }),
+
+  /**
+   * Fetch a binary response (e.g., PDF export).
+   * Returns the raw Response for streaming.
+   */
+  fetchBlob: async (path: string, options?: RequestInit): Promise<Blob> => {
+    const url = `${BASE_URL}${path}`
+    const headers = new Headers(options?.headers)
+    const method = (options?.method ?? 'GET').toUpperCase()
+    if (['POST', 'PUT', 'PATCH', 'DELETE'].includes(method)) {
+      headers.set('X-Requested-With', 'XMLHttpRequest')
+    }
+    if (options?.body && !(options.body instanceof FormData)) {
+      headers.set('Content-Type', 'application/json')
+    }
+
+    const response = await fetch(url, {
+      ...options,
+      headers,
+      credentials: 'same-origin',
+    })
+
+    if (response.status === 401) {
+      window.location.href = '/login'
+      throw new Error('Unauthorized')
+    }
+
+    if (!response.ok) {
+      const data = await response.json()
+      throw new ApiRequestError(response.status, data.error)
+    }
+
+    return response.blob()
+  },
+}
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@ -0,0 +1,13 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import { BrowserRouter } from 'react-router-dom'
+import { App } from './app/App'
+import './index.css'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <BrowserRouter>
+      <App />
+    </BrowserRouter>
+  </StrictMode>,
+)
--- a/frontend/src/pages/EditorPage.tsx
+++ b/frontend/src/pages/EditorPage.tsx
@ -0,0 +1,49 @@
+import { useParams } from 'react-router-dom'
+
+/**
+ * Editor page — PDF canvas workspace.
+ * Full implementation begins in Phase 2 (rendering) and Phase 3 (annotations).
+ */
+export function EditorPage() {
+  const { id } = useParams<{ id: string }>()
+
+  return (
+    <div className="flex h-screen flex-col bg-neutral-100">
+      {/* Editor toolbar */}
+      <header className="flex items-center justify-between border-b border-neutral-200 bg-white px-4 py-2">
+        <div className="flex items-center gap-3">
+          <a
+            href="/"
+            className="rounded-md p-1.5 text-neutral-500 transition-colors hover:bg-neutral-100
+                       hover:text-neutral-700"
+          >
+            ← Back
+          </a>
+          <span className="text-sm font-medium text-neutral-700">
+            Document {id}
+          </span>
+        </div>
+        <div className="flex items-center gap-2">
+          <span className="flex items-center gap-1.5 text-xs text-neutral-400">
+            <span className="h-1.5 w-1.5 rounded-full bg-success" />
+            Saved
+          </span>
+          <button
+            type="button"
+            className="rounded-lg bg-accent-500 px-3 py-1.5 text-sm font-medium text-white
+                       transition-colors hover:bg-accent-600"
+          >
+            Export PDF
+          </button>
+        </div>
+      </header>
+
+      {/* Canvas area */}
+      <main className="flex flex-1 items-center justify-center overflow-auto">
+        <div className="text-sm text-neutral-400">
+          PDF viewer will render here (Phase 2)
+        </div>
+      </main>
+    </div>
+  )
+}
--- a/frontend/src/pages/HomePage.tsx
+++ b/frontend/src/pages/HomePage.tsx
@ -0,0 +1,61 @@
+/**
+ * Home page — recently edited, library, and trash tabs.
+ * Full implementation in Phase 1.
+ */
+export function HomePage() {
+  return (
+    <div className="min-h-screen bg-neutral-50">
+      {/* Header */}
+      <header className="border-b border-neutral-200 bg-white">
+        <div className="mx-auto flex max-w-7xl items-center justify-between px-6 py-4">
+          <h1 className="text-xl font-semibold text-neutral-900">PaperJet</h1>
+          <button
+            type="button"
+            className="rounded-lg bg-accent-500 px-4 py-2 text-sm font-medium text-white
+                       transition-colors duration-150 hover:bg-accent-600"
+          >
+            Upload PDF
+          </button>
+        </div>
+      </header>
+
+      {/* Main content */}
+      <main className="mx-auto max-w-7xl px-6 py-8">
+        {/* Tab navigation */}
+        <nav className="mb-8 flex gap-1 rounded-lg bg-neutral-100 p-1">
+          <button
+            type="button"
+            className="rounded-md bg-white px-4 py-2 text-sm font-medium text-neutral-900
+                       shadow-sm transition-colors"
+          >
+            Recently Edited
+          </button>
+          <button
+            type="button"
+            className="rounded-md px-4 py-2 text-sm font-medium text-neutral-500
+                       transition-colors hover:text-neutral-700"
+          >
+            Library
+          </button>
+          <button
+            type="button"
+            className="rounded-md px-4 py-2 text-sm font-medium text-neutral-500
+                       transition-colors hover:text-neutral-700"
+          >
+            Trash
+          </button>
+        </nav>
+
+        {/* Empty state placeholder */}
+        <div className="flex flex-col items-center justify-center rounded-xl border-2 border-dashed
+                        border-neutral-300 py-20 text-center">
+          <div className="mb-4 text-5xl">📄</div>
+          <h2 className="text-lg font-medium text-neutral-700">No documents yet</h2>
+          <p className="mt-1 text-sm text-neutral-500">
+            Upload a PDF to get started
+          </p>
+        </div>
+      </main>
+    </div>
+  )
+}
--- a/frontend/src/pages/LoginPage.tsx
+++ b/frontend/src/pages/LoginPage.tsx
@ -0,0 +1,40 @@
+/**
+ * Login page — handles both first-run password setup and normal login.
+ * Full implementation in Phase 1.
+ */
+export function LoginPage() {
+  return (
+    <div className="flex min-h-screen items-center justify-center bg-neutral-50">
+      <div className="w-full max-w-md rounded-xl bg-white p-8 shadow-lg">
+        <div className="mb-6 text-center">
+          <h1 className="text-2xl font-semibold text-neutral-900">PaperJet</h1>
+          <p className="mt-2 text-sm text-neutral-500">
+            Self-hosted PDF editor
+          </p>
+        </div>
+        <div className="space-y-4">
+          <div>
+            <label htmlFor="password" className="block text-sm font-medium text-neutral-700">
+              Password
+            </label>
+            <input
+              id="password"
+              type="password"
+              className="mt-1 w-full rounded-lg border border-neutral-300 px-3 py-2 text-sm
+                         placeholder:text-neutral-400 focus:border-accent-500 focus:outline-none
+                         focus:ring-2 focus:ring-accent-200"
+              placeholder="Enter your password"
+            />
+          </div>
+          <button
+            type="button"
+            className="w-full rounded-lg bg-accent-500 px-4 py-2.5 text-sm font-medium text-white
+                       transition-colors duration-150 hover:bg-accent-600 active:bg-accent-700"
+          >
+            Sign In
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
--- a/frontend/src/test-setup.ts
+++ b/frontend/src/test-setup.ts
@ -0,0 +1 @@
+import '@testing-library/jest-dom'
--- a/frontend/tsconfig.app.json
+++ b/frontend/tsconfig.app.json
@ -0,0 +1,28 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "es2023",
+    "lib": ["ES2023", "DOM"],
+    "module": "esnext",
+    "types": ["vite/client"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Strict mode */
+    "strict": true,
+
+    /* Linting */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "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 +1,24 @@
+{
+  "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 */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["vite.config.ts"]
+}
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@ -0,0 +1,20 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [
+    react(),
+    tailwindcss(),
+  ],
+  server: {
+    // Dev proxy: route /api requests to the backend
+    proxy: {
+      '/api': {
+        target: 'http://localhost:8000',
+        changeOrigin: true,
+      },
+    },
+  },
+})
--- a/frontend/vitest.config.ts
+++ b/frontend/vitest.config.ts
@ -0,0 +1,11 @@
+import { defineConfig } from 'vitest/config'
+import react from '@vitejs/plugin-react'
+
+export default defineConfig({
+  plugins: [react()],
+  test: {
+    environment: 'jsdom',
+    globals: true,
+    setupFiles: './src/test-setup.ts',
+  },
+})