Module resolver 

Resolver architecture per ADR-002

Resolvers are functions or objects that resolve interpolation expressions like ${env:VAR} to actual values.

Structs

FnResolver

A simple function-based resolver

ResolvedValue

A resolved value with optional sensitivity metadata

ResolverContext

Context provided to resolvers during resolution

ResolverRegistry

Registry of available resolvers

Traits

Resolver

Trait for resolver implementations