feat(example): add supply-chain-vsm composition demo (S3.5)

Demonstrates infospace composition: the Wealth of Nations infospace is
used as a discipline, applying Smith's economic framework as a lens to
analyse modern supply chain management concepts.

New example: examples/supply-chain-vsm/
- infospace.yaml binding WoN as discipline (../infospace-with-history)
- 3 source documents: coordination mechanisms, capital & inventory,
  market structure (~400 words each, original content)
- supply-chain-entity-schema-v1.0.md with WoN Concept required section
- won-mapping-schema-v1.0.md with Conceptual Continuity rating
- artifacts/won-reference/core-entities.md — 12 curated WoN entities
  for injection as discipline context
- 8 hand-crafted entity files demonstrating LLM output format
- 3 mapping files with full rationale and VSM inheritance chains
- Viable: YES (5/5 thresholds)

Key mappings demonstrated:
  Demand Signal          → Effectual Demand        (Strong, S2)
  Vendor-Managed Inventory → Division of Labour    (Strong, S1/S2)
  Just-in-Time Inventory → Circulating Capital     (Strong, S1/S3)
  Bullwhip Effect        → Natural Price           (Moderate, S2)
  Platform Intermediary  → Merchant Capital        (Strong, S2/S4)
  Monopsony Power        → Combination of Masters  (Strong, S3*)

Platform fix: entity_parser.py now recognises ## Supply Chain Domain
as a domain alias for ## Economic Domain, enabling composed infospaces
to use their own domain section name.

Tutorial §13 rewritten with real commands, real output, and the full
mapping table from the demo.

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

examples/supply-chain-vsm/output/metrics/history.yaml

@@ -0,0 +1,52 @@
+- snapshot_id: 8624eed1
+  created_at: '2026-02-22T22:56:11.424102+00:00'
+  schema_name: default
+  entity_count: 8
+  entity_evaluations: []
+  collection_metrics:
+  - name: coherence_components
+    value: 0.0
+    concern: C3
+  - name: consistency_cycles
+    value: 0.0
+    concern: C4
+  - name: coverage_ratio
+    value: 1.0
+    concern: C2
+  - name: granularity_entropy
+    value: 0.0
+    concern: C5
+  - name: modularity
+    value: 0.0
+    concern: C3
+  - name: redundancy_ratio
+    value: 0.0
+    concern: C1
+  metadata:
+    source: collection-checks
+- snapshot_id: '89119325'
+  created_at: '2026-02-22T23:07:36.634661+00:00'
+  schema_name: default
+  entity_count: 8
+  entity_evaluations: []
+  collection_metrics:
+  - name: coherence_components
+    value: 0.0
+    concern: C3
+  - name: consistency_cycles
+    value: 0.0
+    concern: C4
+  - name: coverage_ratio
+    value: 1.0
+    concern: C2
+  - name: granularity_entropy
+    value: 1.9056390622295665
+    concern: C5
+  - name: modularity
+    value: 0.0
+    concern: C3
+  - name: redundancy_ratio
+    value: 0.0
+    concern: C1
+  metadata:
+    source: collection-checks

examples/supply-chain-vsm/output/metrics/metrics.yaml

@@ -0,0 +1,6 @@
+coherence_components: 0.0
+consistency_cycles: 0.0
+coverage_ratio: 1.0
+granularity_entropy: 1.905639
+modularity: 0.0
+redundancy_ratio: 0.0