Confirms a system-intent shift in Miami metro: the operating model is reorganizing around capital absorption rather than community formation. Middle-income out-migration is now the dominant flow, not in-migration. The broader county (Miami-Dade) is shrinking even as the City of Miami grows slowly — this bifurcation should be reflected on the community_context layer: wealth_migration_trend reads as 'inflow' currently but the substrate is bifurcating. Likely also updates dominant_industries to give more weight to luxury services, and increases monoeconomy_risk reading.