DeepSeek-harness-wecom: Integrating WeCom AI Bot Text, Image, and File Channels into DeepSeek Harness

The official DeepSeek Harness (DSH) plugin `sliverp/DeepSeek-harness-wecom` (v0.1.5) resolves the session channel breakpoint between the Web and the WeCom AI Bot. This standalone community plugin establishes a long connection via the official SDK, integrating text, image, and file messages from WeCom Work into the same Harness session, with support for persistent session reuse, tool approvals, file path restrictions, and access control. Core features include: support for single-chat/group-chat text and mixed-media input, automatic decryption and processing of encrypted files, and channel-specific tools such as `wecom_send_file`; support for commands like `/approve` and `/reset` for approvals and session rotation; and access policies of open, whitelist, or disabled modes.