feat(example): add per-entity LLM evaluations for 985 WoN entities (S3.3)

Batch evaluation of all 988 entities via OpenRouter. 984 succeeded on
first pass; 3 failed (network errors). eval-summary --update-metrics
written with per_entity_mean=3.9556.

Viability dashboard: 6/6 PASS
  redundancy_ratio   0.0061  (max 0.10)
  coverage_ratio     0.6190  (min 0.40)
  coherence_comps    0.0000  (max 3)
  consistency_cycles 0.0000  (max 0)
  granularity_entropy 2.6748 (min 1.0)
  per_entity_mean    3.9556  (min 3.5)

Dimension breakdown (mean across 985 entities):
  definition_precision  3.62
  source_grounding      4.36
  domain_placement      4.56
  vsm_relevance         3.31
  explanatory_value     3.94

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

examples/infospace-with-history/output/evaluations/frozen_ocean_barrier.md

@@ -0,0 +1,65 @@
+---
+entity_slug: frozen_ocean_barrier
+evaluator: null
+evaluated_at: '2026-02-23T05:31:52.980730'
+overall_score: 4.2
+scores:
+- name: definition_precision
+  value: 4.0
+  max_value: 5.0
+  rationale: The definition is clear and specific, identifying a distinct physical
+    phenomenon (frozen waterways) and its economic consequences (barriers to trade
+    and market development). It avoids circularity and captures a concrete concept
+    rather than a vague abstraction.
+- name: source_grounding
+  value: 5.0
+  max_value: 5.0
+  rationale: This entity is directly grounded in Smith's text, specifically his discussion
+    of "the frozen ocean of Tartary" as a barrier that "admits of no navigation" and
+    contributes to the uncivilized state of certain regions. The concept faithfully
+    represents Smith's actual argument about geographical barriers to commerce.
+- name: domain_placement
+  value: 5.0
+  max_value: 5.0
+  rationale: The placement in the "Exchange" domain is entirely appropriate, as this
+    entity directly concerns barriers to trade and commerce. Smith uses this example
+    specifically to illustrate how geographical constraints limit market development
+    and economic exchange.
+- name: vsm_relevance
+  value: 3.0
+  max_value: 5.0
+  rationale: This entity has moderate VSM relevance, primarily relating to S4 (intelligence/environmental
+    adaptation) as it represents an environmental constraint that economic systems
+    must recognize and adapt to. However, it's more of an external constraint than
+    an active system component.
+- name: explanatory_value
+  value: 4.0
+  max_value: 5.0
+  rationale: The entity provides genuine explanatory power by illustrating how geographical
+    barriers create structural limitations on market development and specialization.
+    It demonstrates a concrete mechanism by which physical environment shapes economic
+    possibilities, supporting Smith's broader theory about the relationship between
+    navigation, trade, and civilization.
+---
+
+# Evaluation: Frozen Ocean Barrier
+
+## definition_precision — 4.0 / 5.0
+
+The definition is clear and specific, identifying a distinct physical phenomenon (frozen waterways) and its economic consequences (barriers to trade and market development). It avoids circularity and captures a concrete concept rather than a vague abstraction.
+
+## source_grounding — 5.0 / 5.0
+
+This entity is directly grounded in Smith's text, specifically his discussion of "the frozen ocean of Tartary" as a barrier that "admits of no navigation" and contributes to the uncivilized state of certain regions. The concept faithfully represents Smith's actual argument about geographical barriers to commerce.
+
+## domain_placement — 5.0 / 5.0
+
+The placement in the "Exchange" domain is entirely appropriate, as this entity directly concerns barriers to trade and commerce. Smith uses this example specifically to illustrate how geographical constraints limit market development and economic exchange.
+
+## vsm_relevance — 3.0 / 5.0
+
+This entity has moderate VSM relevance, primarily relating to S4 (intelligence/environmental adaptation) as it represents an environmental constraint that economic systems must recognize and adapt to. However, it's more of an external constraint than an active system component.
+
+## explanatory_value — 4.0 / 5.0
+
+The entity provides genuine explanatory power by illustrating how geographical barriers create structural limitations on market development and specialization. It demonstrates a concrete mechanism by which physical environment shapes economic possibilities, supporting Smith's broader theory about the relationship between navigation, trade, and civilization.