5. Reference applications

Three independent applications are the official demonstrators of 2.0. Each is built only from the DSL + ViewDefinition — no framework code was modified — and each ships a full validation test (PHP + a React/View test). They exist to prove the model on real domains and to establish, reproducibly, where it holds and where it stops.

App	Path	Entities	Highlights	Tests
CRM	apps/crm	5	customers, opportunities (pipeline), tasks, activities, users	18 PHP + 4 JS
Teranga PMS	apps/teranga-pms	10	hotel property management; reservation → stay → invoice → payment	28 PHP + 4 JS
SGH (Hospital)	apps/sgh	12	patient → appointment → consultation → prescription → admission → invoice → payment → medical record	31 PHP + 4 JS

What each demonstrates

• CRM — the baseline: entities, create/transition actions, projections, single-hop expand (opportunity → customer), visibility-gated fields, and a generated React navigation.
• Teranga PMS — scale and chains: 7 state machines, a full booking-to-payment workflow, six expand chains, and the design pattern that every entity exposes a flat board projection (the only legal single-hop expand target) plus a richer detail that carries the expands.
• SGH — the most demanding: a clinical workflow across 12 entities and four-dimension authorization (guards on actor, tenant, subject, and input, all expressed with primitive operators).

Running a reference app

# PHP validation (compiles to a temp .ausus, runs the full workflow, writes test fixtures)
php apps/sgh/tests/sgh-validation-test.php

# React/View layer (consumes the fixtures the PHP test just generated)
cd apps/sgh/tests && node --test --experimental-strip-types 'sgh-renderer.test.ts'

The *-renderer.test.ts suites depend on the fixtures produced by the matching *-validation-test.php; run the PHP test first. Generated .ausus/ and .fixtures/ are not versioned (see .gitignore).

The three apps are also the empirical basis for the known limits: each limit listed there is reproduced by a concrete scenario in one of them.