dsh-plugin-photoshop: Driving Native Adobe Photoshop with AI

The DeepSeek Harness (DSH) plugin Better-Rain/dsh-plugin-photoshop addresses the issue that AI cannot directly operate local GUI applications, enabling AI in DSH to directly control Adobe Photoshop. The plugin provides core features such as environment self-checking, reading the layer tree, batch background removal, batch processing, and 93 general-purpose operations. All processing is performed locally with zero third-party dependencies, making it suitable for image automation workloads in Windows environments.