5. 上下文管理

5.1 环境信息收集

class EnvironmentContext {
  async collect(): Promise<string> {
    const info = {
      // 基本信息
      os: process.platform,
      cwd: process.cwd(),
      shell: process.env.SHELL,
      
      // 项目信息
      packageJson: await this.readPackageJson(),
      gitStatus: await this.getGitStatus(),
      
      // 文件结构
      projectStructure: await this.getProjectStructure()
    };
    
    return this.format(info);
  }
  
  async getGitStatus(): Promise<string> {
    try {
      const branch = await exec('git branch --show-current');
      const status = await exec('git status --short');
      const recentCommits = await exec('git log --oneline -5');
      
      return `Branch: ${branch}
Status:
${status}
Recent commits:
${recentCommits}`;
    } catch {
      return 'Not a git repository';
    }
  }
  
  async getProjectStructure(): Promise<string> {
    // 生成项目文件树（排除 node_modules 等）
    const tree = await generateTree(process.cwd(), {
      ignore: ['node_modules', '.git', 'dist', 'build']
    });
    return tree;
  }
}

5.2 终端状态追踪

class TerminalTracker {
  private terminals: Map<string, TerminalState> = new Map();
  
  track(id: string, state: TerminalState) {
    this.terminals.set(id, {
      ...state,
      lastUpdated: Date.now()
    });
  }
  
  getContext(): string {
    const active = [...this.terminals.values()]
      .filter(t => this.isActive(t));
    
    if (active.length === 0) {
      return 'No active terminals';
    }
    
    return active.map(t => `
Terminal ${t.id}:
  CWD: ${t.cwd}
  Last command: ${t.lastCommand}
  ${t.isRunning ? `Running: ${t.currentCommand}` : `Exit code: ${t.lastExitCode}`}
`).join('\n');
  }
}

---