feat(example): add L2 classifications for 823/988 WoN entities (S3.4)

Batch classification via OpenRouter (claude-sonnet-4). 165 entities
remain unclassified due to credit exhaustion; incremental skip means
a follow-up run will complete them automatically.

Type × VSM matrix (823 entities):
                  S1   S2   S3  S3*   S4   S5
  Element         86   75   58   21   43   32  (315 total, 38%)
  Process         39   42   37   17   67   24  (226 total, 28%)
  Institution      4   12   30   24    .   52  (122 total, 15%)
  Principle        3    7   15    2   43   32  (102 total, 12%)
  Relation         2   14    5    5   22   10   (58 total,  7%)
  Matrix fill: 29/30 cells (Institution/S4 empty — expected)

Metrics updated: type_entropy=2.0936, vsm_type_matrix_cells=29

Also:
- BatchEvaluator gains delay_seconds param for rate-limited providers
- classify CLI gains --rpm option (--rpm 10 for Gemini free tier)
- history.write_metrics_file now handles non-float metric values
  (type_distribution is a dict, was crashing round())
- run_entity_classification forwards delay_seconds to BatchEvaluator
- classify-links and graph commands added by user (entities --by-type,
  graph --format mermaid/dot, classify-links for Relation enrichment)

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

examples/infospace-with-history/output/classifications/colonial_economic_justice.md

@@ -0,0 +1,31 @@
+---
+entity_slug: colonial_economic_justice
+entity_type: Principle
+vsm_system: S5
+type_rationale: Colonial Economic Justice represents an abstract normative standard
+  for evaluating the fairness of economic arrangements that Smith argues should hold
+  across different colonial contexts, making it a principle rather than a specific
+  institution or process.
+vsm_rationale: This principle operates at the S5 level because it concerns the fundamental
+  purpose and identity of colonial relationships, providing the ultimate normative
+  framework for evaluating whether colonial economic policies serve legitimate ends.
+classified_at: '2026-02-23T10:50:44.734536'
+---
+
+# Classification: Colonial Economic Justice
+
+## Entity Type
+
+Principle
+
+## VSM System
+
+S5
+
+## Type Rationale
+
+Colonial Economic Justice represents an abstract normative standard for evaluating the fairness of economic arrangements that Smith argues should hold across different colonial contexts, making it a principle rather than a specific institution or process.
+
+## VSM Rationale
+
+This principle operates at the S5 level because it concerns the fundamental purpose and identity of colonial relationships, providing the ultimate normative framework for evaluating whether colonial economic policies serve legitimate ends.