DeepSeek Harness Plugin: uckkk/dsh-base58 (Base58 Encoding and Decoding)

This plugin provides Base58 encoding and decoding in a pure Node.js environment for DeepSeek Harness (DSH), eliminating the need for network services and ensuring local efficiency and security. Users must install it using `dsh plugin add` and configure the `bundles` field in the `package.json` of their profile. Once installed, the relevant tools can be invoked directly in a session. Since the code runs locally, please review the MIT-licensed source code before use.