Improved debugging messages

[2.0.1]

Added

• Readable error messages — ResolutionError messages now display human-readable Swift type names instead of raw ObjectIdentifier debug descriptions, making it easier to diagnose missing or mismatched registrations.

Fixed

• Argument type matching clarified — Documented that argument matching is based on compile-time types, so registering with ConcreteType and resolving with any Protocol (or vice versa) creates distinct registrations.