infospace: process book-4-introduction

Extract entities, map to VSM, and synthesize analysis.

examples/infospace-with-history/output/entities/revenue-for-public-services.md

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+<!-- generated: provider=openrouter model=arcee-ai/trinity-large-preview:free date=2026-02-19 source=book-4-introduction -->
+
+# Revenue for Public Services
+
+## Definition
+
+The financial resources collected by the state or commonwealth to fund governmental operations and public expenditures. This represents one of the two primary objectives of political economy, alongside enabling the people to provide for their own subsistence.
+
+## Source Chapter
+
+Book IV, Chapter 0
+
+## Context
+
+Smith identifies revenue for public services as the second major objective of political economy, complementing the goal of enabling people to provide their own subsistence. This establishes the dual nature of political economy as serving both private and public economic interests.
+
+## Economic Domain
+
+Regulation
+
+---