Finish the struct and list leftovers: inline lists, list fields, item kinds

An unconnected list input is a button into the List tab instead of a number
field; a struct field can hold a list, so ListSlot carries an optional field
name and the three owner cases only say what sits at a key; and a list
variable picks its item kind in the inspector (marker doubles as the chooser),
so a list of structs no longer has to be born from a project file.

The declaration keeps the storable shapes finite: a struct field may be a list,
but that list holds primitives only, so list->struct->primitive and
struct->list->primitive are the two deepest forms.

check 674, e2e 483, jump-run 24, Tetris 19.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/core/graph/NodeRegistry.ts

@@ -3,7 +3,7 @@ import type { PropertyDef } from '../properties/PropertySchema';
 import type { Graph, GraphNode, PortType } from './Graph';
 import type { BehaviorLookup } from './lookup';
 import type { NodeContext } from './NodeContext';
-import { asBoolean, asNumber, asString, type Value } from './values';
+import { asBoolean, asList, asNumber, asString, type Value } from './values';
 
 export interface PortDef {
   key: string;
@@ -135,6 +135,16 @@ export function inlineInputDef(port: PortDef): PropertyDef {
     case 'string':
     case 'any':
       return { key: port.key, label: port.label, kind: 'text', default: asString(port.default ?? '') };
+    // No port declares an item kind, so an inline list reads as numbers – the same default
+    // `+ Variable ▸ List` picks. The graph types a list as a list either way.
+    case 'list':
+      return {
+        key: port.key,
+        label: port.label,
+        kind: 'list',
+        default: asList(port.default),
+        items: 'number',
+      };
     default:
       return {
         key: port.key,