feat: add weekly summary features and components

- Introduced `CategoryBreakdown`, `JiraWeeklyMetrics`, `PeriodSelector`, and `VelocityMetrics` components to enhance the weekly summary dashboard.
- Updated `WeeklySummaryClient` to manage period selection and PDF export functionality.
- Enhanced `WeeklySummaryService` to support period comparisons and activity categorization.
- Added new API route for fetching weekly summary data based on selected period.
- Updated `package.json` and `package-lock.json` to include `jspdf` and related types for PDF generation.
- Marked several tasks as complete in `TODO.md` to reflect progress on summary features.

src/app/api/weekly-summary/route.ts

@@ -0,0 +1,36 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { WeeklySummaryService } from '@/services/weekly-summary';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const periodParam = searchParams.get('period');
+    
+    // Valider le paramètre de période
+    let periodDays = 7; // Défaut: 7 jours
+    if (periodParam) {
+      const parsedPeriod = parseInt(periodParam, 10);
+      if (!isNaN(parsedPeriod) && parsedPeriod > 0 && parsedPeriod <= 365) {
+        periodDays = parsedPeriod;
+      }
+    }
+
+    console.log(`📊 API weekly-summary appelée avec période: ${periodDays} jours`);
+
+    const summary = await WeeklySummaryService.getWeeklySummary(periodDays);
+    
+    return NextResponse.json(summary, {
+      headers: {
+        'Cache-Control': 'no-cache, no-store, must-revalidate',
+        'Pragma': 'no-cache',
+        'Expires': '0'
+      }
+    });
+  } catch (error) {
+    console.error('Erreur lors de la génération du résumé hebdomadaire:', error);
+    return NextResponse.json(
+      { error: 'Erreur lors de la génération du résumé' },
+      { status: 500 }
+    );
+  }
+}