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/** A successful result carrying a value. */
export type Ok<T> = { readonly ok: true; readonly value: T }
/** A failed result carrying an error. */
export type Err<E> = { readonly ok: false; readonly error: E }
/**
* Result<T, E> — a recoverable-error return type for functions that can
* fail without throwing. Used at system boundaries (save/load, content
* validation, manifest fetch) where the caller needs to decide whether a
* failure is fatal. Internal pure logic uses plain returns and throws
* Error for programmer errors (rules/01-code-style.md).
*/
export type Result<T, E = Error> = Ok<T> | Err<E>
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