dsh-paint-scratch: Scratch Handling

The `dsh-paint-scratch` plugin for DSH (DeepSeek Harness) follows the “everything is a plugin” philosophy and provides agents with a localized, network-independent scratch handling solution. Maintained by developer `uckkk`, it supports precise parameter-based calculations and returns processing suggestions, making it suitable for handling specific business logic in Node.js environments. Installation requires appropriate dependency versions for packages such as `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools`. Once installed, users can directly invoke its tools within a session. The plugin is implemented in pure Node.js and is licensed under the MIT License.