dsh-imggen: A Static Plugin Providing Text-to-Image Output Capabilities for DeepSeek Harness

The `dsh-imggen` plugin for DSH provides text-to-image generation capabilities for Harness. It uses a dual-face architecture, with the free, keyless Pollinations backend supported by default, and also includes support for OpenAI (DALL·E 3). The tool offers a tool card for image generation, along with support for downloads, history gallery viewing, and backend switching. Configurations written to the bundle persist across restarts, and API keys are processed locally only. The project is open source and aims to simplify the image generation workflow.