ca60ba148c
- Added `registerMacroAlias()` public method to register aliases for existing macros - Extracted shared registration logic into private `#registerMacroEntry()` helper - Refactored `registerMacro()` to use `#registerMacroEntry()` for both primary macros and aliases - Alias registration validates name format, prevents self-aliasing, and resolves alias chains to primary definition - Aliases inherit handler and metadata from target but has source of the registration caller