infospace: process book-4-chapter-09

Extract entities, map to VSM, and synthesize analysis.

examples/infospace-with-history/output/entities/productive-expenses.md

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+<!-- generated: provider=openrouter model=arcee-ai/trinity-large-preview:free date=2026-02-19 source=book-4-chapter-09 -->
+
+# Productive Expenses
+
+## Definition
+
+Those expenses which, over and above replacing their own value, occasion the annual reproduction of neat produce, including both the ground expenses of landlords and the original and annual expenses of farmers in agricultural systems.
+
+## Source Chapter
+
+Book IV, Chapter 9
+
+## Context
+
+Smith describes how agricultural systems designate certain expenses as "productive" because they generate surplus value beyond simple replacement, contrasting this with expenses on artificers and manufacturers which are considered barren and unproductive.
+
+## Economic Domain
+
+Production
+
+---