[Bug]: error: unknown command 'github'

### Description

缺失opencli github，readme里有

### Steps to Reproduce

1. Run `opencli github`
2. See error：unknown command 'github'


### Expected Behavior

readme出错还是命令缺失？麻烦核实。

### OpenCLI Version

1.0.3

### Node.js Version

Other

### Operating System

Windows

### Logs / Screenshots

```shell

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