dsh-ipcalc: An IP and Subnet Math Toolkit for DeepSeek Harness

dsh-ipcalc is a localized IP and subnet arithmetic toolkit for DeepSeek Harness, designed to address the common issue of large language models making errors when performing mental calculations around boundary conditions. Maintained by TYEclipse and licensed under the MIT License, the plugin features zero dependencies and purely local computation. It provides five core tools, including IPv4/IPv6 subnet layout, CIDR aggregation, and address parsing and matching, with support for RFC compliance and IANA classification, ensuring the accuracy and security of network configuration logic.