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/artifacts/won-reference/core-entities.md

@@ -0,0 +1,192 @@
+# Wealth of Nations — Core Entities Reference
+
+A curated selection of WoN entities from the infospace at
+`../infospace-with-history/output/entities/`, chosen for their relevance
+to supply chain analysis. Use these as mapping targets in the
+`map-to-won` pipeline stage.
+
+---
+
+## Division of Labour
+
+Slug: `division-of-labour`
+
+The specialisation of tasks among workers or firms, each focusing on a
+narrow function to increase overall productive efficiency. Smith argues
+this is the primary source of economic progress, enabled by the certainty
+that surplus production can be exchanged.
+
+VSM: S1 (primary operational mechanism)
+
+---
+
+## Effectual Demand
+
+Slug: `effectual-demand`
+
+The demand of those who are willing and able to pay the natural price of
+a commodity. Effectual demand, not total desire, is what calls productive
+resources into action. When effectual demand exceeds supply, market price
+rises above natural price; when it falls short, market price falls below.
+
+VSM: S2 (coordination signal — regulates resource allocation)
+
+---
+
+## Natural Price as Central Price
+
+Slug: `natural-price-as-central-price`
+
+The natural price is the centre around which market prices continually
+gravitate. When the market price exceeds the natural price, capital is
+attracted; when it falls below, capital exits. The natural price is thus
+an equilibrium attractor that Smith likens to a centre of gravity.
+
+VSM: S2 (coordination signal — equilibrium reference point)
+
+---
+
+## Market Price Adjustment Mechanism
+
+Slug: `market-price-adjustment-mechanism`
+
+The process by which market price moves toward natural price through
+changes in supply. Excess supply depresses market price; scarcity raises
+it. The mechanism depends on capital mobility: if capital can freely enter
+and exit a sector, prices will converge to natural levels. Restrictions on
+capital mobility (monopoly, regulation) prevent convergence.
+
+VSM: S2 (coordination mechanism — negative feedback loop)
+
+---
+
+## Circulating Capital
+
+Slug: `circulating-capital`
+
+The component of capital that is used up in the course of a single
+productive cycle and must be continually replaced. Includes raw materials,
+work-in-progress, and the wages fund. Distinguished from fixed capital
+(machinery, buildings) by the fact that it yields its return only by
+changing hands. The speed of circulation determines how productively
+a given capital stock can be employed.
+
+VSM: S1 / S3 (operational resource; managed for return velocity)
+
+---
+
+## Accumulation of Stock
+
+Slug: `accumulation-of-stock`
+
+The process of building up capital reserves from savings (frugality),
+enabling future investment in productive capacity. Smith argues that
+capital accumulation precedes and enables division of labour — you cannot
+specialise workers until you have stock to sustain them while production
+is in progress. Stock functions as a buffer between production and
+consumption.
+
+VSM: S3 (capital management — enables S1 operations)
+
+---
+
+## Merchant Capital
+
+Slug: `merchant-capital`
+
+Capital employed by merchants who buy goods in one market and sell them in
+another, earning a profit from price differentials without directly engaging
+in production. Merchant capital performs the function of distribution:
+connecting producers and consumers who would otherwise face prohibitive
+search and transaction costs. Smith notes that merchants are mobile — they
+have no necessary attachment to any particular country — and that this
+mobility gives them leverage over producers and governments.
+
+VSM: S2 / S4 (coordination; also market intelligence function)
+
+---
+
+## Monopoly in Trade
+
+Slug: `monopoly-in-trade`
+
+A situation in which a single seller or a privileged group of sellers
+control supply in a market, enabling them to set prices above the natural
+level. Smith argues monopoly prices are always the highest that can be
+extracted from buyers, whereas competition drives prices toward the
+natural level. Monopoly distorts resource allocation by keeping prices
+high and restricting supply below what free competition would provide.
+
+VSM: S5 (policy distortion — violates S2 equilibrating function)
+
+---
+
+## Combination of Masters
+
+Slug: `combination-of-masters`
+
+The coordinated action by employers to restrain wages or otherwise
+improve their negotiating position relative to workers. Smith observes
+that such combinations are common but rarely discussed publicly. The
+practical effect is monopsony-like suppression of the returns to labour
+below their natural level.
+
+VSM: S3* (audit / anti-competitive practice — distorts S2 signals)
+
+---
+
+## Higgling and Bargaining of the Market
+
+Slug: `higgling-and-bargaining-of-the-market`
+
+The process of price discovery through negotiation between buyers and
+sellers. Smith describes it as the mechanism by which value in exchange
+is determined in practice — not by abstract calculation but by the
+push-and-pull of each party pursuing their own interest, with the result
+tending toward a price both can accept.
+
+VSM: S2 (real-time coordination mechanism)
+
+---
+
+## Invisible Hand Mechanism
+
+Slug: `invisible-hand-mechanism`
+
+The process by which individuals pursuing their private economic interest
+unintentionally produce outcomes beneficial to the whole economy. Smith
+uses this metaphor specifically for domestic investment decisions: a
+merchant who prefers domestic to foreign investment for security reasons
+inadvertently maximises domestic productive capacity. The mechanism does
+not require coordination — it is an emergent property of distributed
+self-interested action under competitive conditions.
+
+VSM: S4 (distributed intelligence — environmental adaptation without
+central direction)
+
+---
+
+## Capital Security Preference
+
+Slug: `capital-security-preference`
+
+Smith's observation that capital owners systematically prefer less risky
+applications of their capital over more risky ones, even when the expected
+return might favour the riskier option. This preference shapes the
+allocation of capital across sectors and geographic areas.
+
+VSM: S3 (capital management — explains capital allocation patterns)
+
+---
+
+## Market Communication Channels
+
+Slug: `market-communication-channels`
+
+The mechanisms through which information about prices, quantities, and
+conditions flows between market participants. Smith implicitly relies on
+such channels for his account of price adjustment — if buyers and sellers
+cannot learn each other's prices and terms, the equilibrating mechanism
+breaks down.
+
+VSM: S2 (information infrastructure for coordination)