dsh-basic-training: Basic Training and Parameter Recommendations

The `dsh-basic-training` plugin for DeepSeek Harness (DSH) is a local tool implemented in pure Node.js and focused on providing basic training recommendations. It can run without an internet connection, making it suitable for network-restricted scenarios. Installation requires a specific environment version (e.g., `@deepseek-ai/cordis`), and it is important to inspect the source code and permissions. The plugin integrates into the DSH workflow as a lightweight solution and invokes basic training-related features through registered tool interfaces.