dsh-gemini-multimodal: Multimodal Perception for DeepSeek Harness

**dsh-gemini-multimodal** is a plugin developed for DeepSeek Harness. By calling the Google Gemini API or a local CLI, it addresses the limitation that DeepSeek models cannot directly process unstructured data such as screenshots, audio, and video. The plugin provides capabilities including multimodal analysis, transcription, image generation, and document understanding, and supports two provider modes: `gemini_api` and `antigravity_cli`. After installation, users can invoke the relevant tools in DeepSeek Harness, allowing the main model to focus on logical reasoning while enabling “seeing” and “hearing” capabilities.