builtin blank-imports every service + smart package so their registrations run,
exposes Commands(), and provides the zero-side-effect coverage suite
(TestAllShortcutsAssemble / TestAllToolLiteralsAreReal / TestNoDuplicateCommands
/ TestAllHaveIntent). legacy loads user YAML shortcuts then merges built-in
shortcut leaves into the helper command tree; root wraps the tool caller with the
usage recorder and registers dws shortcut.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>