Module error 

Unified application error type and IPC error envelope.

AppError is the only error type that crosses the Tauri IPC boundary. It serialises to { kind, message, retryable, details? } so the frontend can map kind to a presentation policy (toast / inline / notification-log) without parsing message.

OCP contract

Adding a new variant only requires:

1. A new variant arm in AppError.
2. A new inner struct <Variant>Details (when the variant carries data).
3. A new arm in the exhaustive match inside Serialize. No existing arms change. The envelope shape { kind, message, retryable, details } is stable.

Structs

AccessDeniedDetails

Details for AppError::AccessDenied.

AuthDetails

Details for AppError::Auth.

ConflictDetails

Details for AppError::Conflict.

InternalDetails

Details for AppError::Internal.

LockedDetails

Details for AppError::Locked.

NetworkDetails

Details for AppError::Network.

NotFoundDetails

Details for AppError::NotFound.

ProviderSpecificDetails

Details for AppError::ProviderSpecific.

RateLimitedDetails

Details for AppError::RateLimited.

UnsupportedDetails

Details for AppError::Unsupported.

ValidationDetails

Details for AppError::Validation.

Enums

AppError

All errors that can leave a Tauri command.