The scene view and the animation preview share one camera, the three form dialogs one base, and keys are found through one set of helpers (#85)

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

src/core/particles/nodes.ts

@@ -1,14 +1,8 @@
 import type { NodeDef, PortDef } from '../graph/NodeRegistry';
 import { type PropertyBag, textOf } from '../model/Properties';
+import { propertyNodeParams } from '../properties/declaredRows';
 import { flatDef } from '../properties/PropertySchema';
-import {
-  PARTICLE_PROPERTY,
-  PROPERTY_DEFAULT_PARAM,
-  PROPERTY_MAX_PARAM,
-  PROPERTY_MIN_PARAM,
-  PROPERTY_NAME_PARAM,
-  propertyNameOf,
-} from '../properties/particles';
+import { PARTICLE_PROPERTY, PROPERTY_NAME_PARAM, propertyNameOf } from '../properties/particles';
 
 /** What one particle is, at one moment: everything a graph may read about it. */
 export interface ParticleEnv {
@@ -249,12 +243,7 @@ export const ParticleProperty: ParticleNodeDef = {
   description: 'A number the source sets: a property row on the placed source, and a value here.',
   inputs: [],
   outputs: [numberOut('value')],
-  params: [
-    flatDef(PROPERTY_NAME_PARAM, 'text', { label: 'Name', value: 'value' }),
-    { key: PROPERTY_DEFAULT_PARAM, label: 'Default', kind: 'number', default: 0, step: NUMBER_STEP },
-    { key: PROPERTY_MIN_PARAM, label: 'Min', kind: 'number', default: 0, step: NUMBER_STEP },
-    { key: PROPERTY_MAX_PARAM, label: 'Max', kind: 'number', default: 1, step: NUMBER_STEP },
-  ],
+  params: propertyNodeParams(NUMBER_STEP),
   derivePorts: ({ node }) => ({ label: propertyNameOf(node) || ParticleProperty.label }),
   emit: (_inputs, params, ctx) => {
     // The slot is bound once, here: reading it per particle would cost a lookup by name each time.