dsh-session-supervisor: Session Lifecycle Supervisor Plugin for DeepSeek Harness

acosmi/dsh-session-supervisor is an active session lifecycle supervision plugin designed specifically for DeepSeek Harness, aimed at addressing silent timeouts, deadline delays, and anomalous rounds in long-running sessions. It is driven by scheduled evaluations, supports three supervision contracts—silence, deadlines, and anomalous rounds—and provides persistent logging and queued follow-up functionality. Its observe-only, non-executing architecture ensures that it does not interfere with business logic, and it supports cold session recovery and Guardian tool management. Developers should note that the plugin depends on the host process remaining alive, cannot recover a hung Agent, and must be version-pinned to avoid compatibility issues.