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/mappings/coordination-mechanisms-mappings.md

@@ -0,0 +1,116 @@
+# WoN Mappings — Coordination Mechanisms
+
+Generated from: `artifacts/sources/coordination-mechanisms.md`
+
+---
+
+# Bullwhip Effect → Natural Price as Central Price
+
+## Supply Chain Entity
+
+Bullwhip Effect
+
+## WoN Entity
+
+Natural Price as Central Price
+
+## Mapping Rationale
+
+Smith describes natural price as a centre of gravity around which market
+price perpetually oscillates. The bullwhip effect describes an analogous
+oscillation in supply chain order quantities around actual demand. In both
+cases, a signal (market price; order quantity) should converge to a
+reference value (natural price; true demand) through a corrective
+mechanism, but systematic distortions prevent convergence. Smith's
+mechanism is capital mobility; the bullwhip's is information transparency.
+Where Smith shows that monopoly or regulation blocks convergence, the
+bullwhip shows that information delay and batching produce the same failure
+in a nominally competitive chain.
+
+## Conceptual Continuity
+
+Moderate — The oscillation-around-equilibrium structure is shared, but
+the bullwhip's amplification mechanism (each tier adding safety buffers)
+is an information processing problem that Smith did not specifically analyse.
+His account of price oscillation focuses on capital reallocation; the
+bullwhip operates through order distortion without necessarily involving
+capital reallocation.
+
+## VSM Inheritance
+
+Bullwhip Effect inherits S2 via Natural Price as Central Price (coordination
+layer failure — the anti-oscillation mechanism is absent or impaired).
+
+---
+
+# Vendor-Managed Inventory → Division of Labour
+
+## Supply Chain Entity
+
+Vendor-Managed Inventory
+
+## WoN Entity
+
+Division of Labour
+
+## Mapping Rationale
+
+Smith argues that dividing labour so each party performs only what they
+are best equipped to do increases productivity and reduces waste. VMI
+applies this principle at the inter-firm boundary: the inventory
+replenishment function, previously split between buyer (tracking stock
+levels) and supplier (responding to batch orders), is consolidated with
+the supplier. The supplier has superior information about their own lead
+times and production capacity, and direct visibility of consumption rather
+than orders. The functional consolidation reduces the coordination friction
+at the boundary and improves signal quality — precisely the efficiency
+gains Smith predicts from specialisation.
+
+## Conceptual Continuity
+
+Strong — VMI is a direct application of division of labour at the
+inter-firm level. The boundary conditions are different (firms rather
+than workers; coordination through IT rather than supervision), but
+the mechanism — assigning a function to the party best positioned to
+perform it — is identical.
+
+## VSM Inheritance
+
+Vendor-Managed Inventory inherits S1/S2 via Division of Labour (operational
+specialisation creating a more effective coordination arrangement).
+
+---
+
+# Demand Signal → Effectual Demand
+
+## Supply Chain Entity
+
+Demand Signal
+
+## WoN Entity
+
+Effectual Demand
+
+## Mapping Rationale
+
+Smith's effectual demand — the demand of those willing and able to pay —
+is the signal that calls productive resources into action. When effectual
+demand exceeds supply, market price rises and capital is attracted; when
+it falls short, production contracts. The modern demand signal serves the
+same coordination function: it tells upstream nodes how much to produce.
+The structural difference is one of mechanism: Smith's effectual demand
+works through price as a lagged, aggregated, emergent signal; the modern
+demand signal is an explicit, real-time, granular data feed. The goal
+(synchronising production with consumption) and the failure mode (distorted
+signals cause misallocation) are shared.
+
+## Conceptual Continuity
+
+Strong — Effectual demand and the demand signal are the same coordination
+function in different technological settings. The modern version is
+Smith's concept made explicit and machine-readable.
+
+## VSM Inheritance
+
+Demand Signal inherits S2 via Effectual Demand (primary coordination
+variable regulating upstream resource allocation).