Strip core to render data and render graphs

Move glTF, picking, camera controls, and conventional handles into addons. Keep camera and material mutations in SIMD-aligned shared SOA rows and synchronize material updates directly into GPU buffers.

Amp-Thread-ID: https://ampcode.com/threads/T-01a01380-b478-77d0-84a0-102880a5c5ae
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>

examples/cookbook/15-complete-scene.js

@@ -1,19 +1,10 @@
 import { culling } from "../render-graph-studio/render-graph/presets.js";
 import { importGltf } from "./09-gltf-import-worker.js";
-import { compileAndSwitch, dropActiveGraph } from "./08-compile-and-switch.js";
+import { compileAndSwitch } from "./08-compile-and-switch.js";
 
 /** Combine the complete JSO graph, shared glTF import, and mesh-handle facade. */
 export async function loadCompleteScene(core, gltfUrl) {
+  const meshes = await importGltf(core, gltfUrl);
   const compiled = await compileAndSwitch(core, culling);
-  try {
-    const meshes = await importGltf(core, gltfUrl);
-    return {
-      compiled,
-      meshes,
-      dispose: () => dropActiveGraph(core, compiled),
-    };
-  } catch (error) {
-    await dropActiveGraph(core, compiled).catch(() => {});
-    throw error;
-  }
+  return { compiled, meshes };
 }