docs: update README with bilingual format (EN/ZH)

Author: nowa277

README.md

@@ -1,65 +1,68 @@
 # Paper Reader Skill
 
+智能学术论文分析工具，支持 Claude Code 等 AI 编程 Agent。
 An intelligent academic paper analysis tool for Claude Code and other AI coding agents.
 
-## Features
+---
 
-- **Multi-Source Paper Search** - Search across arXiv, PubMed, Semantic Scholar, and CrossRef
-- **Automatic PDF Download** - Download papers from various sources
-- **MinerU Integration** - Convert PDF papers to Markdown for analysis
-- **Multi-Level Analysis** - Three levels of analysis (Basic, Academic, Deep Research)
-- **Cross-Platform Support** - Works on Linux, macOS, and Windows
+## 功能 | Features
 
-## Installation
+- **多源论文搜索 | Multi-Source Search** - 支持 arXiv、PubMed、Semantic Scholar、CrossRef
+- **自动 PDF 下载 | Auto Download** - 从多个来源下载论文
+- **MinerU 集成** - PDF 转 Markdown 用于分析
+- **多级分析 | Multi-Level Analysis** - 三种分析级别（基础/学术/深度研究）
+- **跨平台支持 | Cross-Platform** - 支持 Linux、macOS、Windows
+
+## 安装 | Installation
 
-1. Install dependencies:
 ```bash
+# 安装依赖
 pip install requests psutil
-```
 
-2. Install MinerU (optional, for PDF conversion):
-```bash
+# 安装 MinerU（可选，用于 PDF 转换）
 paper-reader setup mineru install
 ```
 
-## Usage
+## 使用 | Usage
 
-### Search and Download Papers
+### 搜索论文 | Search Papers
 
 ```
 /paper-reader fetch <topic-or-keywords>
 ```
 
-### Analyze Papers
+### 分析论文 | Analyze Papers
 
 ```
 /paper-reader analyze <paper-id>
 ```
 
-### Analysis Levels
+### 分析级别 | Analysis Levels
 
-- **Level A (Basic)** - Summary + Key Findings
-- **Level B (Academic)** - Summary + Key Findings + Methodology + Figures + Related Work
-- **Level C (Deep)** - Full Academic + Limitations + Trends + Reproducibility
+| 级别 | 描述 | Level | Description |
+|------|------|-------|-------------|
+| A | 基础分析：摘要 + 关键发现 | A | Basic: Summary + Key Findings |
+| B | 完整学术：+ 方法论 + 图表 + 相关工作 | B | Academic: + Methodology + Figures + Related Work |
+| C | 深度研究：+ 局限性 + 趋势 + 复现分析 | C | Deep: + Limitations + Trends + Reproducibility |
 
-## Architecture
+## 架构 | Architecture
 
 ```
 paper-reader/
 ├── skills/
-│   ├── config/        # Configuration management
-│   ├── mineru/        # MinerU PDF parser
-│   ├── fetch/         # Paper retrieval
+│   ├── config/        # 配置管理 | Configuration
+│   ├── mineru/        # MinerU PDF 解析
+│   ├── fetch/         # 论文获取 | Paper retrieval
 │   │   └── sources/   # arXiv, PubMed, Semantic Scholar, CrossRef
-│   └── analyze/       # Paper analysis
-├── agent_adapters/    # Adapter templates for other AI agents
-├── docs/             # Design documents
-└── tests/            # Test suite
+│   └── analyze/       # 论文分析 | Paper analysis
+├── agent_adapters/    # Agent 适配器
+├── docs/              # 设计文档
+└── tests/             # 测试套件
 ```
 
-## Configuration
+## 配置 | Configuration
 
-Configuration is stored at `~/.paper-reader/config.json`.
+配置文件位于 `~/.paper-reader/config.json`。
 
 ## License