feat: add backlog status and update task stats

- Introduced 'backlog' status in TaskStatus type and STATUS_CONFIG for better task categorization.
- Updated TaskStats interface to include backlog count.
- Enhanced getTaskStats method to fetch backlog statistics and display in Header component.
- Added backlog stat card in Header for improved visibility of task status.

components/ui/Header.tsx

@@ -90,6 +90,13 @@ export function Header({ title, subtitle, stats, syncing = false }: HeaderProps)
                 color="yellow"
               />
             )}
+            {stats.backlog > 0 && (
+              <StatCard 
+                label="BACKLOG" 
+                value={String(stats.backlog).padStart(2, '0')} 
+                color="gray"
+              />
+            )}
             {stats.todo > 0 && (
               <StatCard 
                 label="QUEUE" 

lib/status-config.ts

@@ -9,6 +9,13 @@ export interface StatusConfig {
 }
 
 export const STATUS_CONFIG: Record<TaskStatus, StatusConfig> = {
+  backlog: {
+    key: 'backlog',
+    label: 'Backlog',
+    icon: '📋',
+    color: 'gray',
+    order: 0
+  },
   todo: {
     key: 'todo',
     label: 'À faire',

lib/types.ts

@@ -1,6 +1,6 @@
 // Types de base pour les tâches
 // Note: TaskStatus et TaskPriority sont maintenant gérés par la configuration centralisée dans lib/status-config.ts
-export type TaskStatus = 'todo' | 'in_progress' | 'done' | 'cancelled' | 'freeze' | 'archived';
+export type TaskStatus = 'backlog' | 'todo' | 'in_progress' | 'done' | 'cancelled' | 'freeze' | 'archived';
 export type TaskPriority = 'low' | 'medium' | 'high' | 'urgent';
 export type TaskSource = 'reminders' | 'jira' | 'manual';
 
@@ -10,6 +10,7 @@ export interface TaskStats {
   completed: number;
   inProgress: number;
   todo: number;
+  backlog: number;
   cancelled: number;
   freeze: number;
   archived: number;

services/tasks.ts

@@ -189,13 +189,15 @@ export class TasksService {
    * Récupère les statistiques des tâches
    */
   async getTaskStats() {
-    const [total, completed, inProgress, todo, cancelled, freeze] = await Promise.all([
+    const [total, completed, inProgress, todo, backlog, cancelled, freeze, archived] = await Promise.all([
       prisma.task.count(),
       prisma.task.count({ where: { status: 'done' } }),
       prisma.task.count({ where: { status: 'in_progress' } }),
       prisma.task.count({ where: { status: 'todo' } }),
+      prisma.task.count({ where: { status: 'backlog' } }),
       prisma.task.count({ where: { status: 'cancelled' } }),
-      prisma.task.count({ where: { status: 'freeze' } })
+      prisma.task.count({ where: { status: 'freeze' } }),
+      prisma.task.count({ where: { status: 'archived' } })
     ]);
 
     return {
@@ -203,8 +205,10 @@ export class TasksService {
       completed,
       inProgress,
       todo,
+      backlog,
       cancelled,
       freeze,
+      archived,
       completionRate: total > 0 ? Math.round((completed / total) * 100) : 0
     };
   }