MishkaGervaz.Form.Verifiers.ValidateSteps (MishkaGervaz v0.0.1-alpha.2)

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Validates the step configuration within the layout section of MishkaGervaz form DSL.

Five checks, in order:

  1. Steps must be present when mode is :wizard or :tabs, and absent when mode is :standard.
  2. navigation: :free is incompatible with :wizard mode (wizards are sequential by design; use :tabs for free navigation).
  3. Each step's groups reference an existing group.
  4. No group appears in more than one step.
  5. At most one step is marked as summary: true.

See MishkaGervaz.Form.Dsl.Layout, MishkaGervaz.Form.Entities.Step, MishkaGervaz.Form.Verifiers.Helpers, and sibling verifiers.