CommandDefinition

A backward-compatible alias of the {@see \Milpa\Command\Operation} atom.

Deprecated: Use {@see \Milpa\Command\Operation} directly. Retained as a subclass so plugins and hosts compiled against `Milpa\Runtime\CommandDefinition` keep working: it inherits `Operation`'s constructor and its public `name`/`description`/`handler`/`inputSchema` properties unchanged, and every `CommandDefinition` is-an `Operation`, so `Kernel::commands()` (now `list<Operation>`) accepts both.