dsh-vision-3090-fix: A Local Proxy Plugin to Limit the Number of Images per Request

`dsh-vision-3090-fix` is a DeepSeek Harness plugin designed to resolve 400 errors caused by the vLLM backend’s default one-image-per-request limit conflicting with DSH’s internal byte-based adapter limit. It runs as a local reverse proxy, intercepts requests, replaces excess images with text placeholders, and enforces a configurable per-request image limit (default: 1), while preserving streaming response support. After installation, configure the proxy parameters and update the Provider’s `baseURL`. The tool is suitable for self-hosted vision model environments using vLLM with `--limit-mm-per-prompt image=1`, offering a low-cost, non-invasive solution.