DeepSeek Harness Update: Enhanced Multimodality

DeepSeek Harness has released version v0.1.0-rc.8, which focuses on enhancing multimodal capabilities, supporting native image requests and mixed text and image input, and allowing Claude Code and Codex to be invoked as sub-agents on demand. It also optimizes concurrent querying and the Windows terminal experience, fixes several stability issues, and further solidifies its position as a unified agent scheduling layer.