RouteProviderInterface

Declares that a plugin contributes routes to the kernel's route table. This is the routing counterpart of core's `ToolProviderInterface`/`EventSubscriberInterface` auto-registration seam: {@see \Milpa\Runtime\Kernel::boot()} checks every successfully booted plugin for this interface and merges its {@see routes()} into the {@see Router} it builds — the same "instanceof, then auto-wire" pattern the family already uses, applied to `milpa/http`'s `Route` value object instead of inventing a second routing abstraction.

abstract public function routes(): array

Routes this plugin contributes to the kernel's route table, already bound to a handler (`Route::isBound()` MUST be true for every entry — the kernel does no attribute scanning).