refactor: remove unused analytics actions and integrate metrics directly

- Deleted `analytics.ts` and `deadline-analytics.ts` as they were no longer needed.
- Integrated `AnalyticsService` and `DeadlineAnalyticsService` directly into `HomePage` and `DailyPage`, streamlining data fetching.
- Updated components to utilize the new metrics structure, ensuring proper data flow and rendering.

src/app/page.tsx

@@ -1,5 +1,7 @@
 import { tasksService } from '@/services/task-management/tasks';
 import { tagsService } from '@/services/task-management/tags';
+import { AnalyticsService } from '@/services/analytics/analytics';
+import { DeadlineAnalyticsService } from '@/services/analytics/deadline-analytics';
 import { HomePageClient } from '@/components/HomePageClient';
 
 // Force dynamic rendering (no static generation)
@@ -7,10 +9,12 @@ export const dynamic = 'force-dynamic';
 
 export default async function HomePage() {
   // SSR - Récupération des données côté serveur
-  const [initialTasks, initialTags, initialStats] = await Promise.all([
+  const [initialTasks, initialTags, initialStats, productivityMetrics, deadlineMetrics] = await Promise.all([
     tasksService.getTasks(),
     tagsService.getTags(),
-    tasksService.getTaskStats()
+    tasksService.getTaskStats(),
+    AnalyticsService.getProductivityMetrics(),
+    DeadlineAnalyticsService.getDeadlineMetrics()
   ]);
 
   return (
@@ -18,6 +22,8 @@ export default async function HomePage() {
       initialTasks={initialTasks}
       initialTags={initialTags}
       initialStats={initialStats}
+      productivityMetrics={productivityMetrics}
+      deadlineMetrics={deadlineMetrics}
     />
   );
 }