Shader assets: graph-built shaders, the Shader tab and sprite rows from the graph (#62)

A shader is an asset carrying a node graph (Texture color, Output, Property,
Color, Add/Subtract/Multiply/Divide, Mix, Luminance) that compiles to the GLSL
fragment of a Pixi filter. The Shader tab reuses the Behavior canvas; a sprite
wears a shader through its Shader picker, and the rows below it are the
graph's Property nodes. Property schema, resolution and deviation take the
project because a sprite's rows now live in another asset. The built-in
registry of the prototype is gone; "Adjust colors" ships as a graph in the
fixture and the three example games.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/editor/inspector/objectSection.ts

@@ -30,7 +30,7 @@ import {
   isCommonProp,
   type PropertyDef,
   schemaFor,
-  schemaForAsset,
+  schemaForObject,
 } from '../../core/properties/PropertySchema';
 import {
   deviatesFromAsset,
@@ -69,7 +69,8 @@ export function objectSignature(
     : isLiveInstance(project, holder, object)
       ? 'instance'
       : '';
-  return `${object.parentId}|${kind}|` + schemaForAsset(asset).map(defSignature).join(',');
+  const rows = schemaForObject(project, asset, object);
+  return `${object.parentId}|${kind}|` + rows.map(defSignature).join(',');
 }
 
 /** Several objects: what they are, and the actions that apply to all of them at once. */
@@ -125,7 +126,7 @@ export function buildObjectSection(host: InspectorHost, holderId: string, object
   if (target) assetLink(host, 'Part of', target.asset);
 
   // The master switch, right where it is looked for: above everything type-specific.
-  const resolved = resolveSceneObjectProps(asset, object);
+  const resolved = resolveSceneObjectProps(host.state.project, asset, object);
   for (const def of COMMON_PROPS) propertyRow(host, holderId, objectId, asset, def, resolved);
   // A behavior's own switches sit with it rather than in the section below: that one lists what
   // the behavior *declares*, and `Run in editor` is not something it declared.
@@ -178,11 +179,11 @@ export function buildObjectSection(host: InspectorHost, holderId: string, object
   }
 
   // Asset properties (or behavior variables) with overrides; the switches are shown above.
-  const values = resolveSceneObjectProps(asset, object);
+  const values = resolveSceneObjectProps(host.state.project, asset, object);
   const own =
     asset.type === 'behavior'
       ? asset.variables
-      : schemaForAsset(asset).filter((def) => !isCommonProp(def.key));
+      : schemaForObject(host.state.project, asset, object).filter((def) => !isCommonProp(def.key));
   if (own.length > 0 || asset.type === 'behavior')
     addTitle(host, asset.type === 'behavior' ? 'VARIABLES' : 'PROPERTIES');
   if (own.length === 0 && asset.type === 'behavior') addNote(host, 'The behavior declares no variables.');
@@ -248,8 +249,9 @@ export function refreshObjectSection(host: InspectorHost, holderId: string, obje
   host.nameField?.setValue(object.name);
   for (const axis of POSITION_AXES) host.fields.get(axis)?.setValue(object.position[axis]);
   for (const axis of OFFSET_AXES) host.fields.get(offsetKey(axis))?.setValue(object.editorOffset[axis]);
-  const values = resolveSceneObjectProps(asset, object);
-  for (const def of schemaForAsset(asset)) host.fields.get(def.key)?.setValue(values[def.key] ?? def.default);
+  const values = resolveSceneObjectProps(project, asset, object);
+  for (const def of schemaForObject(project, asset, object))
+    host.fields.get(def.key)?.setValue(values[def.key] ?? def.default);
   markObjectRows(host, object, asset, targetOf(project, holderId, objectId));
   return true;
 }
@@ -343,10 +345,11 @@ function markObjectRows(
       ?.setModified(Boolean(target) && object.position[axis] !== target!.base.position[axis]);
   for (const axis of OFFSET_AXES)
     host.fields.get(offsetKey(axis))?.setModified(object.editorOffset[axis] !== 0);
-  for (const def of schemaForAsset(asset)) {
+  const project = host.state.project;
+  for (const def of schemaForObject(project, asset, object)) {
     const deviates = target
       ? deviatesFromTemplate(object, target.base, def.key)
-      : deviatesFromAsset(object, asset, def.key);
+      : deviatesFromAsset(project, object, asset, def.key);
     host.fields.get(def.key)?.setModified(deviates);
   }
 }