Describe every value kind in one table instead of spreading it over the code

A kind like colour or texture used to be spelled out in five parallel
lists, its port type, its empty value, its glyph, its label and its list
tag - 22 literal places for texture alone. core/properties/kinds.ts now
holds one row per kind and the rest is derived from it, so adding a kind
is one row. The five literal nodes collapse into literals.ts, the six
kind menus into one helper.

Number, Text, Boolean is now the one order everywhere; the variable and
port menus used to list Boolean before Text.

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

src/editor/inspector/variableRows.ts

@@ -1,14 +1,6 @@
-import type { DeclaredPortKind } from '../../core/graph';
 import type { PropertyValue } from '../../core/model/Properties';
-import {
-  type ListItemKind,
-  type PropertyDef,
-  STRUCT_FIELD_KINDS,
-  type StructDef,
-  type StructFieldDef,
-  type StructFieldKind,
-  type VariableKind,
-} from '../../core/properties/PropertySchema';
+import { kindLabel, kindMark, STRUCT_FIELD_KINDS, type StructFieldKind } from '../../core/properties/kinds';
+import type { PropertyDef, StructDef, StructFieldDef } from '../../core/properties/PropertySchema';
 import {
   Button,
   Dropdown,
@@ -38,34 +30,9 @@ import {
 } from './fieldFactory';
 import { addNote, type InspectorHost } from './host';
 
-type ShownKind = VariableKind | ListItemKind | StructFieldKind | DeclaredPortKind;
-
-/** One glyph and one name per kind, wherever a kind is shown: variables, list items, fields, ports. */
-const KIND_MARKS: Record<ShownKind, string> = {
-  number: '#',
-  boolean: '✓',
-  text: 'Aa',
-  color: '◧',
-  texture: '▦',
-  list: '≡',
-  struct: '⊞',
-  object: '◇',
-};
-
-export const KIND_LABELS: Record<ShownKind, string> = {
-  number: 'Number',
-  boolean: 'Boolean',
-  text: 'Text',
-  color: 'Color',
-  texture: 'Texture',
-  list: 'List',
-  struct: 'Struct',
-  object: 'Object',
-};
-
-/** Variables are `PropertyDef`s, so the kind is typed wide; only the shown kinds ever reach it. */
-export function kindMark(kind: string): string {
-  return (KIND_MARKS as Partial<Record<string, string>>)[kind] ?? '?';
+/** The menu every "add a kind" button opens: one entry per kind, named as the kind table names it. */
+export function kindMenu<K extends string>(kinds: readonly K[], pick: (kind: K) => void): MenuItem[] {
+  return kinds.map((kind) => ({ label: kindLabel(kind), onSelect: () => pick(kind) }));
 }
 
 /** Changing a declaration – offered only on the asset that declares it. */
@@ -149,7 +116,7 @@ function structFieldRows(
 
 function fieldRow(field: StructFieldDef, edit: VariableEditing | undefined): HStack {
   const name = nameCell(field.key, 1, edit && ((next) => edit.renameField(field, next)));
-  return gridRow(1, markLabel(KIND_MARKS[field.kind]), name);
+  return gridRow(1, markLabel(kindMark(field.kind)), name);
 }
 
 /** Indent, mark and name – sized so that whatever follows starts on the value column at any depth. */
@@ -198,10 +165,6 @@ export function markPicker(glyph: string, items: MenuItem[]): Button {
 
 function addFieldMenu(kinds: readonly StructFieldKind[], edit: VariableEditing): Dropdown {
   const add = new Dropdown('+ Field', { variant: 'ghost' });
-  add.onClick = () => {
-    new Menu(
-      kinds.map((kind) => ({ label: KIND_LABELS[kind], onSelect: () => edit.addField(kind) })),
-    ).openBelow(add);
-  };
+  add.onClick = () => new Menu(kindMenu(kinds, (kind) => edit.addField(kind))).openBelow(add);
   return add;
 }