The runtime message type. Opaque. Engines construct values via fromAction or fromDebouncedInput; the runtime may add internal variants without breaking engines.

A view engine transforms the engine's view type into Html (Msg model).

Convert a user-level action into a runtime message that engines can attach to event handlers.

Construct a runtime message that writes value to a debounced cell's raw slot and schedules a Process.sleep timer that commits raw → settled after the cell's configured delay. Used by view engines on onInput for debounced bindings.

Engines that want a raw write without scheduling a timer should use Rad.View.bindDebouncedWith with a trigger list that excludes OnTimeout (that binding dispatches a plain Action instead).

Apply a runtime message to the registry. Used by the Layer 0-1 runtime wrapper; reaction and debounced messages are handled by the runtime directly.