feat(auth): implement multi-step registration process and enhance background services

- Updated RegisterScreen to support a multi-step registration flow with components for email input, verification, and profile setup.
- Added new components: VerificationCodeInput, StepIndicator, and corresponding types for step management.
- Enhanced background service to check authentication status before executing tasks, improving app reliability.
- Updated TypeScript configuration to include module resolution and JSON module support.

This update significantly improves the user registration experience and ensures background tasks are only executed for authenticated users.

src/components/common/index.ts

@@ -32,3 +32,8 @@ export type { ImageGalleryProps, GalleryImageItem } from './ImageGallery';
 export type { ResponsiveGridProps } from './ResponsiveGrid';
 export type { ResponsiveStackProps, StackDirection, StackAlignment, StackJustify } from './ResponsiveStack';
 export type { AdaptiveLayoutProps, SidebarLayoutProps } from './AdaptiveLayout';
+
+// 注册流程相关组件
+export { default as VerificationCodeInput } from './VerificationCodeInput';
+export { default as StepIndicator, RegisterStepIndicator } from './StepIndicator';
+export type { Step, StepIndicatorProps } from './StepIndicator';