If someone meets several old friends in one city, is a separate Mechaye HaMetim blessing required for each one?

A source-based Torah discussion of the question: If someone meets several old friends in one city, is a separate Mechaye HaMetim blessing required for each one? This localized discovery layer presents the canonical issue for search and study without adding a new practical ruling. The author-fidelity publication clearance is preserved, while the full Hebrew source remains the controlling text for its reasoning, qualifications and conclusion.