Assume the role of a Central Bank Governor for a nation experiencing 5,000% annual inflation. Outline a shock-therapy stabilization program. Your strategy must address the immediate re-anchoring of inflation expectations, the mechanism for introducing a new currency (or redenominating the existing one), and the fiscal-monetary coordination required to prevent a relapse. Discuss the specific impact on wage-price indexation, foreign debt restructuring, and the potential social repercussions of austerity measures. Provide a step-by-step 12-month roadmap detailing the sequence of interventions.