{
  "context": "Tests whether the agent follows rails-engine-author conventions: using isolate_namespace, providing a configure block with a Configuration class, defining the host-app contract, providing copy generators for migrations (not silent apply), referencing host models via configurable class names, and using a minimal lib/engine.rb structure.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "isolate_namespace used",
      "description": "lib/audit_trail/engine.rb calls isolate_namespace AuditTrail inside the Engine class",
      "max_score": 12
    },
    {
      "name": "configure block pattern",
      "description": "lib/audit_trail.rb defines a self.configure method that yields a Configuration instance (the standard configure do |config| pattern)",
      "max_score": 10
    },
    {
      "name": "Configuration class",
      "description": "lib/audit_trail/configuration.rb defines an AuditTrail::Configuration class with at least one attr_accessor for the host user class or equivalent",
      "max_score": 8
    },
    {
      "name": "Configurable user class",
      "description": "The Configuration class has an attribute for the host app's user class name (e.g. user_class or actor_class) defaulting to a string (e.g. 'User'), NOT a hard-coded constant",
      "max_score": 12
    },
    {
      "name": "No hard-coded host constant",
      "description": "The engine code does NOT reference ::User, ::Employee, or any other host app constant directly — uses the configurable class name or constantize pattern instead",
      "max_score": 10
    },
    {
      "name": "Migrations not auto-applied",
      "description": "lib/audit_trail/engine.rb does NOT call initializer or config block that runs migrations automatically — no db:migrate call in engine code",
      "max_score": 10
    },
    {
      "name": "Host contract documented",
      "description": "host_contract.md exists and describes at minimum: (1) what the host must configure, and (2) what the engine exposes",
      "max_score": 10
    },
    {
      "name": "lib/audit_trail.rb minimal",
      "description": "lib/audit_trail.rb requires version, configuration, and engine — does not contain business logic",
      "max_score": 8
    },
    {
      "name": "Dummy app routes mount engine",
      "description": "spec/dummy/config/routes.rb mounts AuditTrail::Engine at some path",
      "max_score": 8
    },
    {
      "name": "Model namespaced",
      "description": "app/models/audit_trail/audit_event.rb defines AuditTrail::AuditEvent (namespace matches engine isolation)",
      "max_score": 8
    },
    {
      "name": "Engine type justified",
      "description": "host_contract.md or engine.rb comments state the engine type chosen (mountable/full/plain) — OR the engine class correctly inherits from ::Rails::Engine",
      "max_score": 4
    }
  ]
}