Failure Recovery: Universal Resilience & Self-Healing Protocol

Universal, timeless failure recovery, self-healing, and resilience engineering protocol. Use when debugging errors, handling test failures, resolving tool exceptions, recovering from crashes, backtracking invalidated assumptions, executing rollbacks, or managing subagent failure ladders across any language, runtime, or framework. This skill is for agent-side development failures (test failures, tool crashes, wrong assumptions, coding errors), NOT for live production incidents affecting end users. Enforces the 7 Universal Recovery Invariants, 3-tier fault attribution (infrastructure vs cognitive vs domain), the 6-Fork Decision Lattice, transactional state reversibility, mo…