feat: refactor daily task management with new pending tasks section

- Added `PendingTasksSection` to `DailyPageClient` for displaying uncompleted tasks.
- Implemented `getPendingCheckboxes` method in `DailyClient` and `DailyService` to fetch pending tasks.
- Introduced `getDaysAgo` utility function for calculating elapsed days since a date.
- Updated `TODO.md` to reflect the new task management features and adjustments.
- Cleaned up and organized folder structure to align with Next.js 13+ best practices.

src/clients/daily-client.ts

@@ -153,6 +153,34 @@ export class DailyClient {
     const response = await httpClient.get<{ dates: string[] }>('/daily/dates');
     return response.dates;
   }
+
+  /**
+   * Récupère les checkboxes en attente (non cochées)
+   */
+  async getPendingCheckboxes(options?: {
+    maxDays?: number;
+    excludeToday?: boolean;
+    type?: 'task' | 'meeting';
+    limit?: number;
+  }): Promise<DailyCheckbox[]> {
+    const params = new URLSearchParams();
+    if (options?.maxDays) params.append('maxDays', options.maxDays.toString());
+    if (options?.excludeToday !== undefined) params.append('excludeToday', options.excludeToday.toString());
+    if (options?.type) params.append('type', options.type);
+    if (options?.limit) params.append('limit', options.limit.toString());
+    
+    const queryString = params.toString();
+    const result = await httpClient.get<ApiCheckbox[]>(`/daily/pending${queryString ? `?${queryString}` : ''}`);
+    return result.map((cb: ApiCheckbox) => this.transformCheckboxDates(cb));
+  }
+
+  /**
+   * Archive une checkbox
+   */
+  async archiveCheckbox(checkboxId: string): Promise<DailyCheckbox> {
+    const result = await httpClient.patch<ApiCheckbox>(`/daily/checkboxes/${checkboxId}/archive`);
+    return this.transformCheckboxDates(result);
+  }
 }
 
 // Instance singleton du client