feat(data): route useShape through @ng-eventually/client (passthrough)

The reactive ORM data-plane now goes through the @ng-eventually/client wrapper
instead of @ng-org/orm directly; ngSession injects the real SDK into the polyfill via
configure(). Currently a transparent passthrough (lib mechanisms still stubbed) →
behavior unchanged. Validated: build, @ui 4/4, @data 8/8 against the real broker.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/shared/hooks/useShapeWithDefaults.ts

@@ -8,7 +8,7 @@
  * Must only be called when NG is connected (inside NgDataProvider).
  */
 
-import { useShape } from '@ng-org/orm/react';
+import { useShape } from '@ng-eventually/client';
 import type { ShapeType, BaseType } from '@ng-org/shex-orm';
 import type { DeepSignalSet } from '@ng-org/alien-deepsignals';
 export interface ShapeWithDefaults<NgT extends BaseType, AppT> {

src/shared/test-harness/harness-ng.tsx

@@ -11,7 +11,7 @@ import React, { useEffect, useState } from 'react';
 import { createRoot } from 'react-dom/client';
 import { NextGraphProvider, useNextGraph } from '../context/NextGraphContext';
 import { FestipodDataProvider, useFestipodData } from '../context/FestipodDataContext';
-import { useShape } from '@ng-org/orm/react';
+import { useShape } from '@ng-eventually/client';
 import type { DeepSignalSet } from '@ng-org/alien-deepsignals';
 import {
   FpEventShapeType,

src/shared/utils/ngSession.ts

@@ -1,6 +1,14 @@
 import { ng, init as initNgWeb } from "@ng-org/web";
 import type { NG } from "@ng-org/web";
 import { initNg as initNgSignals } from "@ng-org/orm";
+import { useShape as realUseShape } from "@ng-org/orm/react";
+import { configure as configureEventually } from "@ng-eventually/client/polyfill";
+
+// Inject the REAL SDK into the ng-eventually polyfill. The app imports the
+// SDK-shaped exports (`useShape`, `ng`, `inbox`) from `@ng-eventually/client`,
+// which delegate to what we inject here. This is the single injection point —
+// removed at migration (the app then points back at the real SDK).
+configureEventually({ ng, useShape: realUseShape });
 
 export let session: NextGraphSession | undefined;