合并客户端真机预览链路

需求：将待审 Release 扫码验收与项目级真机入口并入登录、发布集成候选。

实现：合并 Main-owned 精确预览与提交映射能力，保留现有登录和一键发布边界。

src/App.tsx

@@ -18,6 +18,7 @@ import { PreviewScene } from './pages/Makelore';
 import { ProjectConfiguration } from './pages/ProjectConfiguration';
 import { Workbench } from './pages/Workbench';
 import { ImageCanvas } from './pages/ImageCanvas';
+import { DevicePreview } from './pages/DevicePreview';
 import { Settings } from './pages/Settings';
 import { Setup } from './pages/Setup';
 import { Login } from './pages/Login';
@@ -389,6 +390,7 @@ function App() {
             <Route path="/chat" element={<Navigate to="/opencode-chat" replace />} />
             <Route path="/deliverables" element={<PreviewScene />} />
             <Route path="/image-canvas" element={<ImageCanvas />} />
+            <Route path="/device-preview" element={<DevicePreview />} />
             <Route path="/workbench/:projectId" element={<Workbench />} />
             <Route path="/opencode-chat" element={<ProjectChatRoute />} />
             <Route path="/projects" element={<Projects />} />