infospace: process book-5-chapter-02

Extract entities, map to VSM, and synthesize analysis.

examples/infospace-with-history/output/entities/customs-duties.md

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+<!-- generated: provider=openrouter model=arcee-ai/trinity-large-preview:free date=2026-02-19 source=book-5-chapter-02 -->
+
+# Customs Duties
+
+## Definition
+
+Taxes imposed on goods imported from foreign countries, which historically
+were intended to tax the profits of merchants but now serve primarily as a
+source of revenue and sometimes as instruments of monopoly or trade regulation.
+
+## Source Chapter
+
+Book V, Chapter 2
+
+## Context
+
+Smith traces the history of customs duties from their origins as taxes on
+merchant profits to their current role in revenue generation, and critiques
+their use as instruments of monopoly rather than revenue.
+
+## Economic Domain
+
+General Theory
+
+---