Coordinate scoped model reads with bounded streaming state and identity fences

src/components/workspace/canvas-runtime-host.tsx

@@ -11,7 +11,7 @@ import { createWorkspaceRuntime } from "@/lib/canvas-runtime/workspace";
 import { createBrowserDigests } from "@/lib/canvas-runtime/browser-digests";
 import {createBrowserImageDecoder} from "@/lib/canvas-runtime/browser-images";
 import { createBrowserStorage } from "@/lib/canvas-runtime/storage";
-import { createFoundryAssets, createFoundryPersistence, createFoundryTransport, createFoundryRuns } from "@/lib/canvas-service/index";
+import { createFoundryAssets, createFoundryPersistence, createFoundryTransport, createFoundryRuns,createFoundryModelLoader } from "@/lib/canvas-service/index";
 
 const Context = createContext<RuntimeHost | null>(null);
 const Renderers=createContext(defaultCanvasRenderers);
@@ -20,6 +20,7 @@ export function CanvasRuntimeHost({ children,extensions=[] }: { children: ReactN
   const [{host,renderers}] = useState(() => {
     const registry = createRegistry([...builtinComponents(),...extensions.flatMap(extension=>extension.components??[])]),renderers=createReactRenderers([...defaultCanvasRenderers.definitions,...extensions.flatMap(extension=>extension.renderers??[])],registry);
     const host=createRuntimeHost({ registry,
+      modelLoader(accountId,workspaceId,_authEpoch,current){return createFoundryModelLoader({workspaceId,registry,transport:createFoundryTransport({accountId,isCurrentIdentity:current})});},
       workspace(accountId, workspaceId, authEpoch, isCurrentIdentity) {
         return createWorkspaceRuntime({ accountId, workspaceId, authEpoch, isCurrentIdentity, registry, storage: createBrowserStorage(),digests:createBrowserDigests(),images:createBrowserImageDecoder(),
           adapters(rootId, current) {