diff --git a/apps/ai-game-creator-shell/src/view/project-development/index.tsx b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
index 043f8f3cf..617f24059 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/index.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
@@ -112,6 +112,7 @@ import {
   zoomResourceBookViewport,
 } from './resourceBookViewport';
 import {
+  createResourceCanvasPageCategorySignature,
   createResourceCanvasPageWheelState,
   queueResourceCanvasPageWheel,
   resetResourceCanvasPageWheel,
@@ -1826,11 +1827,11 @@ export default function ProjectDevelopmentView({
     });
   }, [resourceCategoryScopeKey]);
   const resourcePageCategoryKey = useMemo(
-    () => canvasResources.map((resource) => resource.category).join('|'),
+    () => createResourceCanvasPageCategorySignature(canvasResources),
     [canvasResources],
   );
   const resourcePageCategories = useMemo(
-    () => (resourcePageCategoryKey ? visibleCategoryOrder : []),
+    () => (resourcePageCategoryKey ? [...visibleCategoryOrder] : []),
     [resourcePageCategoryKey],
   );
   const activePageCategory =
diff --git a/apps/ai-game-creator-shell/src/view/project-development/resourceCanvasController.ts b/apps/ai-game-creator-shell/src/view/project-development/resourceCanvasController.ts
index 8a7432f3b..d2789348b 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/resourceCanvasController.ts
+++ b/apps/ai-game-creator-shell/src/view/project-development/resourceCanvasController.ts
@@ -6,6 +6,15 @@ export type ResourceCanvasPageWheelState<TCategory> = {
   pendingTimerId: number | null;
 };
 
+export function createResourceCanvasPageCategorySignature<
+  TCategory extends string,
+>(resources: readonly { category: TCategory }[]) {
+  return resources
+    .map((resource) => resource.category)
+    .sort()
+    .join('|');
+}
+
 export function createResourceCanvasPageWheelState<
   TCategory,
 >(): ResourceCanvasPageWheelState<TCategory> {
diff --git a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
index 0367f8af8..cacfa4d36 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
@@ -1315,7 +1315,7 @@ export function registerProjectWorkbenchFoundationTests() {
     });
   });
 
-  it('renders an imported image as a resource-canvas card after manifest refresh', async () => {
+  it('refreshes resource pages when a same-count manifest update changes category', async () => {
     const manifest = createGameCreationAppManifest(
       'workbench-imported-image-canvas',
       '导入图片资源画布测试',
@@ -1385,7 +1385,6 @@ export function registerProjectWorkbenchFoundationTests() {
     const refreshedManifest = {
       ...manifest,
       assets: [
-        ...manifest.assets,
         {
           id: 'imported-image',
           kind: 'ui',
@@ -1398,6 +1397,7 @@ export function registerProjectWorkbenchFoundationTests() {
         },
       ],
     };
+    expect(refreshedManifest.assets).toHaveLength(manifest.assets.length);
     rendered.rerender(
       React.createElement(ProjectDevelopmentView, {
         ...viewProps,
diff --git a/apps/ai-game-creator-shell/tests/resourceCanvasController.test.ts b/apps/ai-game-creator-shell/tests/resourceCanvasController.test.ts
index 2a76877a0..213a94388 100644
--- a/apps/ai-game-creator-shell/tests/resourceCanvasController.test.ts
+++ b/apps/ai-game-creator-shell/tests/resourceCanvasController.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, it } from 'vitest';
 
 import {
+  createResourceCanvasPageCategorySignature,
   createResourceCanvasPageWheelState,
   queueResourceCanvasPageWheel,
   resetResourceCanvasPageWheel,
@@ -8,6 +9,19 @@ import {
 } from '../src/view/project-development/resourceCanvasController';
 
 describe('resource canvas page wheel controller', () => {
+  it('invalidates page categories for same-count category changes without reacting to resource order', () => {
+    const original = [{ category: 'document' }, { category: 'art' }];
+    const reordered = [...original].reverse();
+    const changed = [{ category: 'document' }, { category: 'audio' }];
+
+    expect(createResourceCanvasPageCategorySignature(reordered)).toBe(
+      createResourceCanvasPageCategorySignature(original),
+    );
+    expect(createResourceCanvasPageCategorySignature(changed)).not.toBe(
+      createResourceCanvasPageCategorySignature(original),
+    );
+  });
+
   it('keeps the 20px threshold and converts wheel deltas into page steps', () => {
     const state = createResourceCanvasPageWheelState<'document'>();
     queueResourceCanvasPageWheel(state, {