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AUSUS 2.0 — Entity Engine (canonical documentation)

This is the official reference for AUSUS 2.0, the metadata-first Entity Engine vertical slice (EE-RFC-011 Entity Engine / EE-RFC-012 Entity Definition). It is a self-contained line of packages — ausus/kernel (Definition/Contracts/ Compiled), ausus/entity-engine, ausus/authoring, ausus/cli, ausus/persistence-memory, ausus/api-runtime, ausus/view-system, and @ausus/react-renderer — validated by three reference applications (CRM, Teranga PMS, SGH).

The repository also contains an earlier standard-stack lineage (ausus/standard-stack, ausus/api-http, ausus/runtime-default, @ausus/renderer-react, RFC-001…018) documented by the root README.md and the historical RELEASE-NOTES-v0.1.x.md. This 2.0 documentation describes only the Entity Engine slice and does not modify the historical material.

Start here​

New to AUSUS 2.0? Follow the Quick Start — the single recommended path, from composer require to a rendered UI, outside the monorepo.

Reference (read in any order)​

  1. Introduction — what AUSUS is, why it exists, principles.
  2. Architecture — the L0 → L6 layering with a diagram.
  3. Pipeline — DSL → … → React Renderer, step by step.
  4. Inside the monorepo — a first project — the same walkthrough resolved via Composer path repositories, for contributors working in this repository. External users should follow the Quick Start instead.
  5. Reference applications — CRM, Teranga PMS, SGH.
  6. Capabilities — actions, guards, expand, views, runtime, API, React, repository.
  7. Known limits of 2.0 — documented honestly, no proposed fixes.

At a glance​

DSL (entities/*.php)
  → EntityDefinition        (EE-RFC-012 declarative model)
  → Compiler                (global closure + canonicalise + content-hash)
  → EntitySchema            (frozen, content-addressed)
  → FileSchemaRepository    (.ausus/schemas/<hash>.json + index.json)
  → EntityEngine::bind()    (schema + PersistenceDriver → RuntimeEntity)
  → RuntimeEntity           (invoke / read, data-aware authorization)
  → API Runtime             (GET schema · GET projection · POST action)
  → React Renderer          (auto navigation, tables, forms)
  → View System             (ViewDefinition → pages/sections)
  • Requirements: PHP 8.3+ ; Node 18+ (for the React renderer / TS tests).
  • Status: all 20 PHP test suites and 5 JS suites green (see each section).
  • License: MIT.