diagnostic 2

DeepSeek Harness diagnostic, repair, and rollback plugin: dsh_doctor (diagnose), dsh_doctor_fix (journaled repair), dsh_doctor_rollback (LIFO undo), plus a Cordis runtime service for dynamic self-healing.

Diagnosis-first learning runtime for DeepSeek Harness — a live learning map, structured lessons, and persistent learner state, driven by the Universal Diagnostic Tutor skill.