infospace: process book-4-chapter-09

Extract entities, map to VSM, and synthesize analysis.

examples/infospace-with-history/output/entities/neat-produce.md

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+<!-- generated: provider=openrouter model=arcee-ai/trinity-large-preview:free date=2026-02-19 source=book-4-chapter-09 -->
+
+# Neat Produce
+
+## Definition
+
+The surplus produce that remains after paying all necessary expenses of cultivation, including both the original and annual expenses of the farmer and the ground expenses of the landlord, which constitutes the real revenue and wealth of society in agricultural systems.
+
+## Source Chapter
+
+Book IV, Chapter 9
+
+## Context
+
+Smith explains how agricultural systems identify neat produce as the true measure of national wealth, distinguishing it from gross produce by deducting all necessary expenses, and showing how this concept underpins the classification of productive versus unproductive labour.
+
+## Economic Domain
+
+Production
+
+---