dsh-air-purifier: Air Purifier Selection Tool

The DeepSeek Harness (DSH) plugin dsh-air-purifier is a tool for locally generating home air purifier purchase recommendations. Implemented in pure Node.js, it can return air quality solutions based on parameters without network dependencies, effectively lowering the barrier for agents to call external services. Users can install it via the command line and directly invoke its related tools within a session. It is recommended to review the source code and license before installation, making it suitable for agent scenarios that require localized home solution generation.