Variable defaultNodeRoutingConst

Default routing-trait classifiers covering the kit's built-in shape tools (KIT_SHAPE_KINDS). Each entry matches data.kind === '<name>' — the convention demos use when they explicitly tag scene data with a routing-kind string. The routing trait's default values happen to mirror the shape trait's by name; the two traits remain independent — a consumer can register routing kinds that have no matching shape painter (e.g. 'group', 'sticky-note').

Lives in the canvas layer (next to the builtin shape tools it mirrors) rather than core/scene: the generic routing machinery (NodeRouting) is core, but this default population depends on the canvas-layer KIT_SHAPE_KINDS, so core must not own it.

Consumers using the kit's standard data shape spread defaultNodeRouting into their <SceneCanvas routing={...}> prop; consumers whose data carries no kind field but follows the kit's common shapes ({ path }, { text }, { image }) should prefer inferredNodeRouting below, which SceneCanvas applies automatically when routing is unset.

In lockstep with KIT_SHAPE_KINDS by construction (derived via .map).