refactor(App, navigation): migrate to Expo Router and clean up navigation structure

- Updated App entry point to utilize Expo Router, simplifying the navigation setup.
- Removed legacy navigation components and services to streamline the codebase.
- Adjusted package.json to reflect the new entry point and updated dependencies for compatibility.
- Enhanced overall application structure by consolidating navigation logic and improving maintainability.

src/stores/groupManager.ts

@@ -145,8 +145,8 @@ class GroupManager extends CacheBus<GroupManagerSnapshot, GroupManagerEvent> {
     });
   }
 
-  async getGroup(groupId: number | string, forceRefresh = false): Promise<GroupResponse> {
-    const id = String(groupId);
+  async getGroup(groupId: string, forceRefresh = false): Promise<GroupResponse> {
+    const id = groupId;
     const cached = this.groupDetailCache.get(id);
     if (!forceRefresh && cached && !this.isExpired(cached) && cached.data) {
       return cached.data;
@@ -204,8 +204,8 @@ class GroupManager extends CacheBus<GroupManagerSnapshot, GroupManagerEvent> {
     });
   }
 
-  async getMembers(groupId: number | string, page = 1, pageSize = 50, forceRefresh = false): Promise<GroupMemberListResponse> {
-    const id = String(groupId);
+  async getMembers(groupId: string, page = 1, pageSize = 50, forceRefresh = false): Promise<GroupMemberListResponse> {
+    const id = groupId;
     const key = `${id}:${page}:${pageSize}`;
     const cached = this.groupMembersCache.get(key);
     if (!forceRefresh && cached && !this.isExpired(cached)) {

src/stores/groupMemberListSources.ts

@@ -15,10 +15,10 @@ export class NetworkCursorGroupMemberListPagedSource implements IGroupMemberList
   private nextCursor: string | null = null;
   private hasMoreAfterLastLoad = false;
   private loadedOnce = false;
-  private readonly groupId: number | string;
+  private readonly groupId: string;
   private readonly pageSize: number;
 
-  constructor(groupId: number | string, pageSize: number = GROUP_MEMBER_LIST_PAGE_SIZE) {
+  constructor(groupId: string, pageSize: number = GROUP_MEMBER_LIST_PAGE_SIZE) {
     this.groupId = groupId;
     this.pageSize = pageSize;
   }
@@ -58,10 +58,10 @@ export class NetworkOffsetGroupMemberListPagedSource implements IGroupMemberList
   private nextPage = 1;
   private hasMoreAfterLastLoad = false;
   private loadedOnce = false;
-  private readonly groupId: number | string;
+  private readonly groupId: string;
   private readonly pageSize: number;
 
-  constructor(groupId: number | string, pageSize: number = GROUP_MEMBER_LIST_PAGE_SIZE) {
+  constructor(groupId: string, pageSize: number = GROUP_MEMBER_LIST_PAGE_SIZE) {
     this.groupId = groupId;
     this.pageSize = pageSize;
   }
@@ -100,7 +100,7 @@ export class NetworkOffsetGroupMemberListPagedSource implements IGroupMemberList
 
 export function createRemoteGroupMemberListSource(
   kind: GroupMemberListSourceKind,
-  groupId: number | string,
+  groupId: string,
   pageSize: number = GROUP_MEMBER_LIST_PAGE_SIZE
 ): IGroupMemberListPagedSource {
   return kind === 'offset'

src/stores/routePayloadCache.ts

@@ -0,0 +1,33 @@
+/**
+ * 不可放入 URL 的路由载荷（系统消息对象、课表课程对象等）的短时缓存。
+ * 深链仅带 id；从通知列表等入口跳转前先 stash，目标屏按 id 读取。
+ */
+import type { SystemMessageResponse } from '../types/dto';
+import type { Course } from '../types/schedule';
+
+const systemById = new Map<string, SystemMessageResponse>();
+const courseById = new Map<string, { course: Course; relatedCourses: Course[] }>();
+
+export const routePayloadCache = {
+  stashSystemMessage(message: SystemMessageResponse): void {
+    systemById.set(message.id, message);
+  },
+
+  getSystemMessage(id: string): SystemMessageResponse | undefined {
+    return systemById.get(id);
+  },
+
+  stashCourseDetail(course: Course, relatedCourses: Course[]): void {
+    courseById.set(String(course.id), { course, relatedCourses });
+  },
+
+  getCourseDetail(id: string): { course: Course; relatedCourses: Course[] } | undefined {
+    return courseById.get(id);
+  },
+
+  takeCourseDetail(id: string): { course: Course; relatedCourses: Course[] } | undefined {
+    const v = courseById.get(id);
+    if (v) courseById.delete(id);
+    return v;
+  },
+};