Module schema 

flower-core’s own constraint vocabulary, plugged into fig-schema’s generic rule engine.

fig-schema’s fig_schema::FieldRule/fig_schema::Schema are generic over the constraint type; this module supplies flower’s: a controlled vocabulary (Constraint::Enum) or a link field (Constraint::Reference, where spanning lives — the discovery backbone). flower-core never learns the word “prov”: an embedder (a prov adapter, a $schema detector, …) builds a Schema and supplies it — either through Backend::schema or by injecting it into the Model, the same way managed keys arrive today.

Enums

Constraint

A value constraint on a field.

Traits

FieldRuleExt

Convenience accessors for a flower FieldRule, mirroring what used to be inherent methods before fig_schema::FieldRule became generic. A local trait, since inherent impls can’t be added to a foreign generic type.

Type Aliases

FieldRule

flower’s field rule and schema, with flower’s own Constraint plugged into fig-schema’s generic engine.

Schema