docs: 重写 README 为中文，添加英文版跳转链接

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

README.en.md

@@ -0,0 +1,87 @@
+# blweb · Personal Blog
+
+> Still water runs deep — ink dissolves in silence.
+
+A personal blog built with React + Vite, combining Japanese minimalist aesthetics with glassmorphism design. No backend required, ready to deploy as static files.
+
+[中文版 →](./README.md)
+
+---
+
+## Features
+
+- **Japanese minimalist style** — sakura palette, kanji watermarks, manuscript grid backgrounds
+- **Glassmorphism cards** — rounded corners with `backdrop-filter` frosted glass effect
+- **Light / dark theme toggle** — persisted to `localStorage`
+- **Sakura petal animation** — Canvas petals drift on every route transition
+- **Admin panel** — PIN-protected; create, edit, and delete articles
+- **Rich text editor** — toolbar with bold, italic, headings, blockquotes, and image insertion (URL or local file → base64)
+- **Client-side search** — real-time filtering, no server needed
+- **No backend** — all data stored in `localStorage`; deploy anywhere as static files
+
+## Tech Stack
+
+| Tech | Purpose |
+|------|---------|
+| React 18 | UI framework |
+| Vite | Build tool |
+| React Router v6 | Client-side routing |
+| CSS Modules + Custom Properties | Styling & theme system |
+| localStorage | Data persistence |
+
+## Getting Started
+
+```bash
+# Install dependencies
+npm install
+
+# Start development server
+npm run dev
+
+# Build for production
+npm run build
+```
+
+Open `http://localhost:5173` in your browser.
+
+## Project Structure
+
+```
+src/
+├── components/
+│   ├── admin/       # Admin panel (PIN gate, editor, toolbar)
+│   ├── article/     # Article components (card, grid, body)
+│   ├── layout/      # Layout (Header, Footer, AppShell)
+│   └── ui/          # Shared UI (theme toggle, search, tags, petal canvas)
+├── contexts/        # React Contexts (theme, article data)
+├── pages/           # Page components
+├── styles/          # Global styles, design tokens, animations
+└── utils/           # Helpers (search, date formatting, slug generation)
+```
+
+## Routes
+
+| Path | Page |
+|------|------|
+| `/` | Home (article list) |
+| `/article/:slug` | Article detail |
+| `/about` | About me |
+| `/admin` | Admin panel (PIN required) |
+| `/admin/new` | Create article |
+| `/admin/edit/:slug` | Edit article |
+
+## Admin Panel
+
+Navigate to `/admin`. The default PIN is `2501`.
+
+To change it, update the `CORRECT_PIN` constant in [`src/components/admin/AdminGate.jsx`](src/components/admin/AdminGate.jsx).
+
+## Deployment
+
+**Netlify**: `public/_redirects` is already configured for SPA routing. Drag and drop the `dist/` folder.
+
+**GitHub Pages / other static hosts**: After `npm run build`, copy `dist/index.html` to `dist/404.html`.
+
+## License
+
+MIT