docs: 重构为双语文档结构，添加人设图机制

- 拆分为 docs/(CN) 和 docs_en/(EN) 两个文件夹
- 主 README 索引对应语言文档
- 新增 persona.md (人设图机制详细说明)
- 文件重命名为英文名

docs_en/quick_start.md

@@ -0,0 +1,125 @@
+# TrulyMEM Quick Start Guide
+
+## Running Methods
+
+### Run from Source
+
+```bash
+git clone <repo-url>
+cd TrulyMEM-TrueHumanMEM
+
+pip install -r requirements.txt
+
+python trulymem_entry.py
+```
+
+### Run After Build
+
+After building, an executable will be generated:
+
+```bash
+# Linux/macOS
+chmod +x TrulyMEM
+./TrulyMEM
+
+# Windows
+TrulyMEM.exe
+```
+
+## System Requirements
+
+- **Python 3.8+**
+- **API Key** (DeepSeek, OpenAI, or other compatible APIs)
+
+## First-Time Configuration
+
+1. Run the application
+2. Press **F2** to expand sidebar
+3. Enter **API Key**, **Model**, **Base URL**
+4. Press **Enter** to save
+
+Config will be automatically saved to `~/.trulymem/config.json` and loaded on next startup.
+
+## Keyboard Shortcuts
+
+| Key | Function |
+|-----|-----------|
+| F1 | Help |
+| F2 | Toggle sidebar |
+| F3 | Tool details |
+| F5 | Clear screen |
+| F6 | Exit |
+
+## Data Storage
+
+### Source Mode
+
+| Data | Location |
+|------|----------|
+| Graph database | Project directory `graph_memory.db` |
+| Config file | Project directory `config.json` (if exists) |
+| Database format | SQLite |
+
+### Packaged Mode
+
+| Data | Location |
+|------|----------|
+| Graph database | `~/.trulymem/graph_memory.db` |
+| Config file | `~/.trulymem/config.json` |
+| Database format | SQLite |
+
+> **Note**: Backend manages config uniformly. Frontend only displays messages; config modifications are persisted to filesystem through the backend.
+
+## Architecture Explanation
+
+### Communication Protocol
+
+UI and backend communicate via **Packet Protocol**:
+
+```
+UI (Textual TUI)
+    ↓ BackendClient
+Packet → queue.Queue → BackendServer (independent thread)
+    ↓
+Process request → Return response
+```
+
+### Config Management
+
+- **Storage location**: `~/.trulymem/config.json`
+- **Auto-load**: Load config from file at startup
+- **Dynamic update**: Config changes take effect immediately at runtime
+- **Persistence**: Auto-save to file after modification
+
+## Common Issues
+
+### Python Not Found
+
+Install Python 3.8+: https://www.python.org/downloads/
+
+### Dependency Installation Failed
+
+```bash
+python -m venv venv
+source venv/bin/activate  # Linux/macOS
+venv\Scripts\activate     # Windows
+pip install -r requirements.txt
+```
+
+### Invalid API Key
+
+Check API Key format, ensure no extra spaces.
+
+## Development Commands
+
+```bash
+# Install dependencies
+pip install -r requirements.txt
+
+# Run tests
+pytest tests/
+
+# Build
+bash build/build_windows.bat   # Windows
+bash build/build_linux.sh       # Linux
+```