refactor: date utils and all calls

src/components/dashboard/MetricsTab.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from 'react';
 import { useWeeklyMetrics, useVelocityTrends } from '@/hooks/use-metrics';
+import { getToday } from '@/lib/date-utils';
 import { Card, CardHeader, CardContent } from '@/components/ui/Card';
 import { Button } from '@/components/ui/Button';
 import { DailyStatusChart } from './charts/DailyStatusChart';
@@ -19,7 +20,7 @@ interface MetricsTabProps {
 }
 
 export function MetricsTab({ className }: MetricsTabProps) {
-  const [selectedDate] = useState<Date>(new Date());
+  const [selectedDate] = useState<Date>(getToday());
   const [weeksBack, setWeeksBack] = useState(4);
   
   const { metrics, loading: metricsLoading, error: metricsError, refetch: refetchMetrics } = useWeeklyMetrics(selectedDate);

src/components/dashboard/charts/DailyStatusChart.tsx

@@ -2,6 +2,7 @@
 
 import { BarChart, Bar, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, Legend } from 'recharts';
 import { DailyMetrics } from '@/services/metrics';
+import { parseDate, formatDateShort } from '@/lib/date-utils';
 
 interface DailyStatusChartProps {
   data: DailyMetrics[];
@@ -12,7 +13,7 @@ export function DailyStatusChart({ data, className }: DailyStatusChartProps) {
   // Transformer les données pour le graphique
   const chartData = data.map(day => ({
     day: day.dayName.substring(0, 3), // Lun, Mar, etc.
-    date: new Date(day.date).toLocaleDateString('fr-FR', { day: '2-digit', month: '2-digit' }),
+    date: formatDateShort(parseDate(day.date)),
     'Complétées': day.completed,
     'En cours': day.inProgress,
     'Bloquées': day.blocked,

src/components/dashboard/charts/WeeklyActivityHeatmap.tsx

@@ -1,6 +1,7 @@
 'use client';
 
 import { DailyMetrics } from '@/services/metrics';
+import { parseDate, isToday } from '@/lib/date-utils';
 
 interface WeeklyActivityHeatmapProps {
   data: DailyMetrics[];
@@ -67,7 +68,7 @@ export function WeeklyActivityHeatmap({ data, className }: WeeklyActivityHeatmap
                     </div>
                     
                     {/* Indicator si jour actuel */}
-                    {new Date(day.date).toDateString() === new Date().toDateString() && (
+                    {isToday(parseDate(day.date)) && (
                       <div className="w-2 h-2 bg-blue-500 rounded-full"></div>
                     )}
                   </div>