Module error 

Toolkit error type and crate-level Result alias.

ToolkitError is #[non_exhaustive]: downstream crates must match with a catch-all arm so the toolkit can add variants without a breaking change. Phase 83 Plan 04 extends this enum with a Validation variant wrapping a ConfigValidationError (per review R8) which catches missing-required-value bugs the Default impls on sub-sections would otherwise silently hide.

Enums

ConfigValidationError

Semantic-validation errors surfaced by crate::config::ServerConfig::validate.

ToolkitError

Errors surfaced by the pmcp-server-toolkit runtime.

Type Aliases

Result

Crate-level result alias used by every public API in pmcp-server-toolkit.