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/capital-and-inventory-mappings.md

@@ -0,0 +1,78 @@
+# WoN Mappings — Capital and Inventory
+
+Generated from: `artifacts/sources/capital-and-inventory.md`
+
+---
+
+# Just-in-Time Inventory → Circulating Capital
+
+## Supply Chain Entity
+
+Just-in-Time Inventory
+
+## WoN Entity
+
+Circulating Capital
+
+## Mapping Rationale
+
+Smith defines circulating capital as the component of capital consumed
+each productive cycle that yields its return only by changing hands —
+contrasted with fixed capital (durable plant and equipment). He argues
+that the faster circulating capital turns over, the more productive output
+can be generated from a given capital stock. JIT inventory management is
+an explicit strategy to maximise the velocity of the circulating capital
+cycle by minimising the time capital spends frozen as inventory. The
+financial logic is identical: reduce dwell time, increase velocity,
+extract more productive output per unit of capital employed.
+
+## Conceptual Continuity
+
+Strong — JIT is Smith's circulating capital theory operationalised as an
+inventory management practice. The mechanism (faster turnover of working
+capital) and the goal (higher productive output per unit of capital) are
+the same; only the technological form differs.
+
+## VSM Inheritance
+
+Just-in-Time Inventory inherits S1/S3 via Circulating Capital (operational
+resource; managed for return velocity through S3 capital management policy).
+
+---
+
+# Safety Stock → Accumulation of Stock
+
+## Supply Chain Entity
+
+Safety Stock
+
+## WoN Entity
+
+Accumulation of Stock
+
+## Mapping Rationale
+
+Smith describes stock accumulation as a prerequisite for economic activity:
+before workers can be employed in specialised production, the employer must
+have accumulated sufficient stock to sustain them while production is
+in progress — before any output can be sold. Safety stock is a modern
+instantiation of this logic: productive continuity requires holding a
+buffer of stock to absorb demand and supply variability, just as Smith's
+producer needed reserves before specialising. Both forms of stock are
+held not for immediate productive use but as insurance against disruption
+to continuous operations. The trade-off Smith identifies — between
+accumulating stock and deploying it productively — is exactly the safety
+stock optimisation problem.
+
+## Conceptual Continuity
+
+Moderate — The reserve function is shared, but Smith's accumulation of
+stock is primarily an enabling condition for production while safety stock
+is an operational buffer. The temporal purpose differs (enabling new
+activity vs. maintaining existing activity), though the economic logic
+(idle capital as insurance against continuity risk) is the same.
+
+## VSM Inheritance
+
+Safety Stock inherits S3 via Accumulation of Stock (capital management
+decision about how much reserve to hold against operational risk).