feat: enhance metrics dashboard with new components and data handling

- Introduced `MetricsOverview`, `MetricsMainCharts`, `MetricsDistributionCharts`, `MetricsVelocitySection`, and `MetricsProductivitySection` for improved metrics visualization.
- Updated `MetricsTab` to integrate new components and streamline data presentation.
- Added compatibility fields in `JiraTask` and `AssigneeDistribution` for better data handling.
- Refactored `calculateAssigneeDistribution` to include a count for total issues.
- Enhanced `JiraAnalyticsService` and `JiraAdvancedFiltersService` to support new metrics calculations.
- Cleaned up unused imports and components for a more maintainable codebase.

src/components/dashboard/charts/MetricsMainCharts.tsx

@@ -0,0 +1,34 @@
+'use client';
+
+import { Card, CardHeader, CardContent } from '@/components/ui/Card';
+import { DailyStatusChart } from './DailyStatusChart';
+import { CompletionRateChart } from './CompletionRateChart';
+import { WeeklyMetrics } from '@/hooks/use-metrics';
+
+interface MetricsMainChartsProps {
+  metrics: WeeklyMetrics;
+}
+
+export function MetricsMainCharts({ metrics }: MetricsMainChartsProps) {
+  return (
+    <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+      <Card>
+        <CardHeader>
+          <h3 className="text-lg font-semibold">📈 Évolution quotidienne des statuts</h3>
+        </CardHeader>
+        <CardContent>
+          <DailyStatusChart data={metrics.dailyBreakdown} />
+        </CardContent>
+      </Card>
+
+      <Card>
+        <CardHeader>
+          <h3 className="text-lg font-semibold">🎯 Taux de completion quotidien</h3>
+        </CardHeader>
+        <CardContent>
+          <CompletionRateChart data={metrics.dailyBreakdown} />
+        </CardContent>
+      </Card>
+    </div>
+  );
+}