feat(tasks): enable sharing task lists with teams and users

frontend/src/lib/api.ts

@@ -15,6 +15,7 @@ import {
   SystemSettings,
   Team,
   TaskList,
+  TaskListShare,
   Thought,
   SubTask,
   TagDetails,
@@ -336,13 +337,18 @@ export const api = {
   // --- TASK LISTS ---
   async getTaskLists(): Promise<TaskList[]> {
     const res = await request<TaskList[]>('/api/v1/task-lists');
-    return ensureArray(res);
+    return ensureArray(res).map((tl) => ({
+      ...tl,
+      members: ensureArray(tl.members),
+      shares: ensureArray(tl.shares),
+    }));
   },
 
   async createTaskList(payload: {
     title: string;
     icon?: string;
     color?: string;
+    teamId?: string;
     spaceId?: string;
   }): Promise<TaskList> {
     return request<TaskList>('/api/v1/task-lists', {
@@ -357,6 +363,7 @@ export const api = {
       title?: string;
       icon?: string;
       color?: string;
+      teamId?: string;
       spaceId?: string;
     }
   ): Promise<TaskList> {
@@ -370,6 +377,25 @@ export const api = {
     await request(`/api/v1/task-lists/${id}`, { method: 'DELETE' });
   },
 
+  async getTaskListShares(id: string): Promise<TaskListShare[]> {
+    const res = await request<TaskListShare[]>(`/api/v1/task-lists/${id}/shares`);
+    return ensureArray(res);
+  },
+
+  async addTaskListShare(
+    id: string,
+    payload: { targetType: 'team' | 'user'; targetId: string }
+  ): Promise<TaskListShare> {
+    return request<TaskListShare>(`/api/v1/task-lists/${id}/shares`, {
+      method: 'POST',
+      body: JSON.stringify(payload),
+    });
+  },
+
+  async removeTaskListShare(id: string, shareId: string): Promise<void> {
+    await request(`/api/v1/task-lists/${id}/shares/${shareId}`, { method: 'DELETE' });
+  },
+
   // --- WORKSPACE FOLDERS ---
   async getFolders(): Promise<string[]> {
     const res = await request<string[]>('/api/v1/folders');

frontend/src/lib/types.ts

@@ -64,13 +64,34 @@ export interface Thought {
   triagedAt?: string;
 }
 
+export interface TaskListShare {
+  id: string;
+  taskListId: string;
+  targetType: 'team' | 'user';
+  targetId: string;
+  targetName?: string;
+  email?: string;
+  createdAt: string;
+}
+
+export interface TaskListMember {
+  userId: string;
+  displayName: string;
+  email: string;
+  role: string;
+}
+
 export interface TaskList {
   id: string;
   userId: string;
   spaceId?: string;
   spaceName?: string;
+  teamId?: string;
+  teamName?: string;
   ownerName?: string;
-  members?: SpaceMember[];
+  isOwner?: boolean;
+  members?: TaskListMember[];
+  shares?: TaskListShare[];
   title: string;
   icon: string;
   color: string;