import SwiftData /// Extends ModelContext to conform to the TodoRepository protocol. /// /// This extension allows ModelContext from SwiftData to be used as a todo repository, /// enabling dependency injection and facilitating unit testing by allowing mock /// repositories to be substituted during tests. /// /// The ModelContext methods `delete(_:)` and `insert(_:)` already match the /// TodoRepository protocol requirements, so this extension simply declares conformance /// without requiring additional implementation. extension ModelContext: TodoRepository {}