dsh-mmx-bridge: Enabling DSH Access to MiniMax Multimodal Capabilities

The dsh-mmx-bridge is a DeepSeek Harness (DSH) MIT-licensed plugin maintained by welsione, designed to integrate MiniMax's multimodal capabilities into DSH agent workflows via the mmx_bridge tool. This plugin supports image understanding and generation, video creation, voice synthesis, music generation and cover production, online search, and quota queries. Users can issue direct commands in dialogue or drag and drop images for automatic recognition, with the recognition results featuring an embedded caching mechanism (stored in plaintext) for consistent queries on the same image. The plugin requires DSH version 0.1.0-rc.7 or higher and a logged-in mmx-cli environment. It can be installed via the `dsh plugin` command and takes effect after a restart. Generated artifacts are saved by default to `/tmp/mmx-out/` and are processed via the `/mmx` endpoint.