Input Rules

input/ resolves keyboard, pointer, mouse, touch, pen, and wheel input only.
Resolution order is strict: global consumer first, command fallback second.
If the global consumer handles input, stop and do not dispatch a command.
Input handlers must never mutate state directly.
Input may dispatch commands by id with payloads.
Keep this layer independent from React, renderer, editor store internals, and persisted core domain models.
DOM/browser events should be normalized into small input event types before command mapping.