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_system_comparison.md

@@ -0,0 +1,30 @@
+---
+entity_slug: colonial_economic_system_comparison
+entity_type: Process
+vsm_system: S4
+type_rationale: This entity represents an analytical activity of comparing and contrasting
+  different colonial management approaches to demonstrate their relative effectiveness,
+  which is a methodological process rather than a static element or abstract principle.
+vsm_rationale: The comparative analysis serves as an intelligence function that scans
+  different environmental approaches to colonial policy and adapts understanding based
+  on observed outcomes, fitting S4's role in environment scanning and adaptation.
+classified_at: '2026-02-23T10:51:17.966067'
+---
+
+# Classification: Colonial Economic System Comparison
+
+## Entity Type
+
+Process
+
+## VSM System
+
+S4
+
+## Type Rationale
+
+This entity represents an analytical activity of comparing and contrasting different colonial management approaches to demonstrate their relative effectiveness, which is a methodological process rather than a static element or abstract principle.
+
+## VSM Rationale
+
+The comparative analysis serves as an intelligence function that scans different environmental approaches to colonial policy and adapts understanding based on observed outcomes, fitting S4's role in environment scanning and adaptation.