@dsh-external/dsh-image-unlock: Unlock image input restrictions in DeepSeek Harness Web GUI

`@dsh-external/dsh-image-unlock` is an external plugin for the DeepSeek Harness (DSH) Web GUI maintained by FrostLeafKEE, designed to remove image input restrictions, enabling upstream routes that do not support images (such as Console Go) to process image attachments. Its core functionality includes adding a `defaultInput` patch to models that have not declared image inputs, and converting image blocks into specific tokens to be processed by `claude-vision-skill`, thereby achieving image recognition. The plugin supports instant switching between text-based and native image paths based on the existence or non-existence of the `claude-vision-skill` directory, and allows configuration via `cordis.patch.y`.