dsh-price-less: DeepSeek Harness Context Management Plugin

`dsh-price-less` is an experimental context-management plugin for DeepSeek Harness, designed to address cost inflation and task drift in long conversations. Through multi-layered defenses such as explicit task management, project briefs, intent detection, and context compression, the plugin proactively prunes redundant content. Users must build and enable it from local source code, noting that it is experimental and edits history.