复用空态原语收口项目新建卡片

PlatformEmptyState 增加 button 形态，支持空列表 CTA 复用同一套空态 chrome。

项目页空列表新建项目卡片改为复用 PlatformEmptyState，保留项目页局部尺寸样式。

补充共享空态按钮形态和项目页空态创建测试，并更新 TRACKING。

TRACKING.md

@@ -101,3 +101,4 @@
 - 2026-06-14 组件复用修正：编辑器生成图右上角元数据角标改为复用 `PlatformIconButton asChild="spanButton"`，保留嵌套在图层按钮内的合法 DOM 结构，同时把 Enter / Space 键盘触发和 `darkMini` chrome 收口到共享组件；验证命令：`npm run test -- src/components/common/PlatformIconButton.test.tsx src/components/image-editor/ImageCanvasEditorView.test.tsx`、`npm run typecheck`。
 - 2026-06-14 组件复用修正：编辑器画布内生成输入框和“修改图片”弹窗提示词改为复用 `PlatformTextField variant="textarea"`，删除编辑器里按标签选择器手写 textarea 基础输入 chrome 的做法，仅保留生成器局部尺寸和 Lovart 式覆盖；验证命令：`npm run test -- src/components/image-editor/ImageCanvasEditorView.test.tsx src/components/common/PlatformTextField.test.tsx`、`npm run typecheck`。
 - 2026-06-14 组件复用修正：新增 `PlatformInlineOptionButton`，编辑器生成输入框里的比例和模型选择 pill 改为复用平台内联选项按钮原语，删除两个局部按钮重复维护基础 inline chrome 的做法；验证命令：`npm run test -- src/components/common/PlatformInlineOptionButton.test.tsx src/components/image-editor/ImageCanvasEditorView.test.tsx`、`npm run typecheck`。
+- 2026-06-14 组件复用修正：`PlatformEmptyState` 增加 `asChild="button"` 形态，项目页空列表“新建项目”卡片改为复用平台空态原语，避免项目页单独维护可点击空态卡片基础 chrome；验证命令：`npm run test -- src/components/common/PlatformEmptyState.test.tsx src/components/project/ProjectGalleryView.test.tsx`、`npm run typecheck`。

src/components/common/PlatformEmptyState.test.tsx

@@ -1,7 +1,7 @@
 /* @vitest-environment jsdom */
 
-import { render, screen } from '@testing-library/react';
-import { expect, test } from 'vitest';
+import { fireEvent, render, screen } from '@testing-library/react';
+import { expect, test, vi } from 'vitest';
 
 import { PlatformEmptyState } from './PlatformEmptyState';
 
@@ -71,3 +71,29 @@ test('supports dark editor dashed empty state', () => {
   expect(emptyState.className).toContain('bg-black/20');
   expect(emptyState.className).toContain('text-[var(--platform-text-soft)]');
 });
+
+test('supports button empty state for empty collection actions', () => {
+  const onClick = vi.fn();
+  render(
+    <PlatformEmptyState
+      asChild="button"
+      surface="subpanel"
+      size="panel"
+      className="local-empty-action"
+      onClick={onClick}
+    >
+      新建项目
+    </PlatformEmptyState>,
+  );
+
+  const button = screen.getByRole('button', { name: '新建项目' });
+
+  expect(button.tagName).toBe('BUTTON');
+  expect(button.getAttribute('type')).toBe('button');
+  expect(button.className).toContain('platform-empty-state');
+  expect(button.className).toContain('local-empty-action');
+
+  fireEvent.click(button);
+
+  expect(onClick).toHaveBeenCalledTimes(1);
+});

src/components/common/PlatformEmptyState.tsx

@@ -1,19 +1,41 @@
-import type { HTMLAttributes, ReactNode } from 'react';
+import type { ButtonHTMLAttributes, HTMLAttributes, ReactNode } from 'react';
 
 type PlatformEmptyStateSurface = 'soft' | 'dashed' | 'subpanel' | 'editorDark';
 type PlatformEmptyStateSize = 'compact' | 'panel' | 'inline';
 type PlatformEmptyStateTone = 'base' | 'soft';
 
-type PlatformEmptyStateProps = Omit<
-  HTMLAttributes<HTMLDivElement>,
-  'children'
-> & {
+type PlatformEmptyStateBaseProps = {
   children: ReactNode;
   surface?: PlatformEmptyStateSurface;
   size?: PlatformEmptyStateSize;
   tone?: PlatformEmptyStateTone;
 };
 
+type PlatformEmptyStateDivProps = Omit<
+  HTMLAttributes<HTMLDivElement>,
+  'children'
+> & {
+  asChild?: false;
+} & PlatformEmptyStateBaseProps;
+
+type PlatformEmptyStateButtonProps = Omit<
+  ButtonHTMLAttributes<HTMLButtonElement>,
+  'children'
+> & {
+  asChild: 'button';
+} & PlatformEmptyStateBaseProps;
+
+type PlatformEmptyStateProps =
+  | PlatformEmptyStateDivProps
+  | PlatformEmptyStateButtonProps;
+
+type PlatformEmptyStateClassNameOptions = {
+  surface: PlatformEmptyStateSurface;
+  size: PlatformEmptyStateSize;
+  tone: PlatformEmptyStateTone;
+  className?: string;
+};
+
 const PLATFORM_EMPTY_STATE_SURFACE_CLASS: Record<
   PlatformEmptyStateSurface,
   string
@@ -44,30 +66,57 @@ const PLATFORM_EMPTY_STATE_TONE_CLASS: Record<PlatformEmptyStateTone, string> =
  * 平台通用空态和轻量加载态。
  * 收口平台列表、作品架和素材选择弹窗中重复的空面板外观。
  */
+function getPlatformEmptyStateClassName({
+  surface,
+  size,
+  tone,
+  className,
+}: PlatformEmptyStateClassNameOptions) {
+  return [
+    'min-w-0',
+    'platform-empty-state',
+    PLATFORM_EMPTY_STATE_SURFACE_CLASS[surface],
+    PLATFORM_EMPTY_STATE_SIZE_CLASS[size],
+    PLATFORM_EMPTY_STATE_TONE_CLASS[tone],
+    className,
+  ]
+    .filter(Boolean)
+    .join(' ');
+}
+
 export function PlatformEmptyState({
   children,
   surface = 'soft',
   size = 'compact',
   tone,
   className,
-  ...divProps
+  asChild,
+  ...emptyStateProps
 }: PlatformEmptyStateProps) {
   const resolvedTone =
     tone ?? (surface === 'subpanel' || size === 'inline' ? 'soft' : 'base');
+  const emptyStateClassName = getPlatformEmptyStateClassName({
+    surface,
+    size,
+    tone: resolvedTone,
+    className,
+  });
+
+  if (asChild === 'button') {
+    const { type = 'button', ...buttonProps } =
+      emptyStateProps as ButtonHTMLAttributes<HTMLButtonElement>;
+
+    return (
+      <button {...buttonProps} type={type} className={emptyStateClassName}>
+        {children}
+      </button>
+    );
+  }
 
   return (
     <div
-      {...divProps}
-      className={[
-        'min-w-0',
-        'platform-empty-state',
-        PLATFORM_EMPTY_STATE_SURFACE_CLASS[surface],
-        PLATFORM_EMPTY_STATE_SIZE_CLASS[size],
-        PLATFORM_EMPTY_STATE_TONE_CLASS[resolvedTone],
-        className,
-      ]
-        .filter(Boolean)
-        .join(' ')}
+      {...(emptyStateProps as HTMLAttributes<HTMLDivElement>)}
+      className={emptyStateClassName}
     >
       {children}
     </div>

src/components/project/ProjectGalleryView.test.tsx

@@ -134,4 +134,28 @@ describe('ProjectGalleryView', () => {
     expect(deleteEditorProjectMock).toHaveBeenCalledWith('editor-project-1');
     expect(deleteEditorProjectMock).toHaveBeenCalledWith('editor-project-2');
   });
+
+  it('renders the empty project action with shared empty state chrome', async () => {
+    const onOpenProject = vi.fn();
+    listEditorProjectsMock.mockResolvedValueOnce([]);
+    createEditorProjectMock.mockResolvedValueOnce({
+      ...projectItems[0],
+      projectId: 'editor-project-new',
+    });
+    const user = userEvent.setup();
+
+    render(<ProjectGalleryView onOpenProject={onOpenProject} />);
+
+    const newProjectButton = await screen.findByRole('button', {
+      name: '新建项目',
+    });
+
+    expect(newProjectButton.className).toContain('platform-empty-state');
+    expect(newProjectButton.className).toContain('project-gallery__new-card');
+
+    await user.click(newProjectButton);
+
+    expect(createEditorProjectMock).toHaveBeenCalledTimes(1);
+    expect(onOpenProject).toHaveBeenCalledWith('editor-project-new');
+  });
 });

src/components/project/ProjectGalleryView.tsx

@@ -327,14 +327,16 @@ export function ProjectGalleryView({ onOpenProject }: ProjectGalleryViewProps) {
           正在读取项目
         </PlatformEmptyState>
       ) : projects.length === 0 ? (
-        <button
-          type="button"
+        <PlatformEmptyState
+          asChild="button"
+          surface="subpanel"
+          size="panel"
           className="project-gallery__new-card"
           onClick={createProject}
         >
           <Plus className="h-6 w-6" />
           <span>新建项目</span>
-        </button>
+        </PlatformEmptyState>
       ) : (
         <section className="project-gallery__grid">{projectCards}</section>
       )}