Lume — DSH Desktop Enhancement Plugin: Task Execution Protocol and Persona System

DeepSeek Harness Desktop’s Lume plugin provides structured constraints and memory support for agentic development, using protocols to ensure that models remain “grounded in facts.” It consists of three layers: the Discipline Layer, responsible for request-type classification, fact-checking, and context warnings; the Method Layer, which ensures verifiable outputs through mechanisms such as task contracts, change ledgers, and assumption ledgers; and the Persona Layer, responsible for style control and memory management. Lume includes a dashboard and triggers to monitor runtime status, and supports defining contracts, querying metrics, and managing project knowledge. Rather than replacing model reasoning, it provides only mechanism-based safeguards. Open-sourced under the MIT license, the plugin can effectively address issues such as requirement drift and unauthorized operations.