infospace: process book-4-introduction

Extract entities, map to VSM, and synthesize analysis.

examples/infospace-with-history/output/entities/economic-system-governance.md

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+<!-- generated: provider=openrouter model=arcee-ai/trinity-large-preview:free date=2026-02-19 source=book-4-introduction -->
+
+# Economic System Governance
+
+## Definition
+
+The structures, processes, and mechanisms through which economic arrangements are directed, controlled, and held accountable, including the institutions and policies that establish rules, enforce compliance, and ensure the achievement of political economy's objectives.
+
+## Source Chapter
+
+Book IV, Chapter 0
+
+## Context
+
+Smith's discussion of political economy as the science of the statesman or legislator implies the importance of governance structures and their role in managing economic arrangements effectively.
+
+## Economic Domain
+
+Regulation
+
+---