dsh-narra-channel: Narra Messenger Channel Plugin for DeepSeek Harness

`dsh-narra-channel` is a DeepSeek Harness channel plugin provided by NetMind-AI, designed to streamline the deployment of agents on Narra Messenger. It maps Harness Agent Presets to Narra rooms and supports secure credential storage, streaming, and voice command processing. The plugin creates an independent Worker for each binding and includes session deduplication. Installation requires Node.js 22.19.0+. Currently, it only supports single-message concurrent processing and does not yet support attachment downloads, making it suitable for developers who need to quickly integrate agents into Narra.