feat(Notification): implement notification preferences management and enhance notification handling

- Introduced a new service for managing notification preferences, including push notifications, sound, and vibration settings.
- Updated the notification handling logic to respect user preferences, ensuring notifications are displayed according to user settings.
- Refactored the App and various screens to integrate the new notification preferences, improving user experience and consistency.
- Enhanced the HomeScreen and NotificationSettingsScreen to load and update notification settings seamlessly.
- Implemented a mechanism to hide the bottom tab bar based on scroll events, improving navigation usability.

src/data/models/index.ts

@@ -86,6 +86,8 @@ export interface PostModel {
   isTop: boolean;
   status: 'published' | 'draft' | 'deleted';
   channelId?: string;
+  /** 频道展示用（与 PostDTO.channel 一致） */
+  channel?: { id: string; name: string } | null;
   tags?: string[];
   createdAt: Date;
   updatedAt: Date;