feat: enhance JiraDashboardPage with new components and improved UI

- Integrated `PeriodSelector`, `SkeletonGrid`, and `MetricsGrid` for better data visualization and user interaction.
- Replaced legacy period selection and error display with new components for a cleaner UI.
- Updated `UIShowcaseClient` to demonstrate new Jira dashboard components, enhancing showcase functionality.

src/app/jira-dashboard/JiraDashboardPageClient.tsx

@@ -9,6 +9,9 @@ import { Header } from '@/components/ui/Header';
 import { Card, CardHeader, CardContent } from '@/components/ui/Card';
 import { Button } from '@/components/ui/Button';
 import { Badge } from '@/components/ui/Badge';
+import { PeriodSelector, SkeletonGrid, MetricsGrid } from '@/components/ui';
+import { AlertBanner } from '@/components/ui/AlertBanner';
+import { Tabs } from '@/components/ui/Tabs';
 import { VelocityChart } from '@/components/jira/VelocityChart';
 import { TeamDistributionChart } from '@/components/jira/TeamDistributionChart';
 import { CycleTimeChart } from '@/components/jira/CycleTimeChart';
@@ -197,26 +200,16 @@ export function JiraDashboardPageClient({ initialJiraConfig, initialAnalytics }:
             
             <div className="flex items-center gap-3">
               {/* Sélecteur de période */}
-              <div className="flex bg-[var(--card)] border border-[var(--border)] rounded-lg p-1">
-                {[
+              <PeriodSelector
+                options={[
                   { value: '7d', label: '7j' },
                   { value: '30d', label: '30j' },
                   { value: '3m', label: '3m' },
                   { value: 'current', label: 'Sprint' }
-                ].map((period: { value: string; label: string }) => (
-                  <button
-                    key={period.value}
-                    onClick={() => setSelectedPeriod(period.value as PeriodFilter)}
-                    className={`px-3 py-1 text-sm rounded transition-all ${
-                      selectedPeriod === period.value
-                        ? 'bg-[var(--primary)] text-[var(--primary-foreground)]'
-                        : 'text-[var(--muted-foreground)] hover:text-[var(--foreground)]'
-                    }`}
-                  >
-                    {period.label}
-                  </button>
-                ))}
-              </div>
+                ]}
+                selectedValue={selectedPeriod}
+                onValueChange={(value) => setSelectedPeriod(value as PeriodFilter)}
+              />
               
               <div className="flex items-center gap-2">
                 {analytics && (
@@ -260,40 +253,27 @@ export function JiraDashboardPageClient({ initialJiraConfig, initialAnalytics }:
 
           {/* Contenu principal */}
           {error && (
-            <Card className="mb-6 border-red-500/20 bg-red-500/10">
-              <CardContent className="p-4">
-                <div className="flex items-center gap-2" style={{ color: 'var(--destructive)' }}>
-                  <span>❌</span>
-                  <span>{error}</span>
-                </div>
-              </CardContent>
-            </Card>
+            <AlertBanner
+              title="Erreur"
+              items={[{ id: 'error', title: error }]}
+              icon="❌"
+              variant="error"
+              className="mb-6"
+            />
           )}
 
           {exportError && (
-            <Card className="mb-6 border-orange-500/20 bg-orange-500/10">
-              <CardContent className="p-4">
-                <div className="flex items-center gap-2" style={{ color: 'var(--accent)' }}>
-                  <span>⚠️</span>
-                  <span>Erreur d&apos;export: {exportError}</span>
-                </div>
-              </CardContent>
-            </Card>
+            <AlertBanner
+              title="Erreur d'export"
+              items={[{ id: 'export-error', title: exportError }]}
+              icon="⚠️"
+              variant="warning"
+              className="mb-6"
+            />
           )}
 
           {isLoading && !analytics && (
-            <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
-              {/* Skeleton loading */}
-              {[1, 2, 3, 4, 5, 6].map(i => (
-                <Card key={i} className="animate-pulse">
-                  <CardContent className="p-6">
-                    <div className="h-4 bg-[var(--muted)] rounded mb-4"></div>
-                    <div className="h-8 bg-[var(--muted)] rounded mb-2"></div>
-                    <div className="h-4 bg-[var(--muted)] rounded w-2/3"></div>
-                  </CardContent>
-                </Card>
-              ))}
-            </div>
+            <SkeletonGrid count={6} />
           )}
 
           {analytics && (
@@ -313,40 +293,30 @@ export function JiraDashboardPageClient({ initialJiraConfig, initialAnalytics }:
                         </Badge>
                       )}
                     </h2>
-                    <div className="grid grid-cols-2 lg:grid-cols-4 gap-4">
-                      <div className="text-center">
-                        <div className="text-xl font-bold text-[var(--primary)]">
-                          {analytics.project.totalIssues}
-                        </div>
-                        <div className="text-xs text-[var(--muted-foreground)]">
-                          Tickets
-                        </div>
-                      </div>
-                      <div className="text-center">
-                        <div className="text-xl font-bold text-blue-500">
-                          {analytics.teamMetrics.totalAssignees}
-                        </div>
-                        <div className="text-xs text-[var(--muted-foreground)]">
-                          Équipe
-                        </div>
-                      </div>
-                      <div className="text-center">
-                        <div className="text-xl font-bold text-green-500">
-                          {analytics.teamMetrics.activeAssignees}
-                        </div>
-                        <div className="text-xs text-[var(--muted-foreground)]">
-                          Actifs
-                        </div>
-                      </div>
-                      <div className="text-center">
-                        <div className="text-xl font-bold text-orange-500">
-                          {analytics.velocityMetrics.currentSprintPoints}
-                        </div>
-                        <div className="text-xs text-[var(--muted-foreground)]">
-                          Points
-                        </div>
-                      </div>
-                    </div>
+                    <MetricsGrid
+                      metrics={[
+                        {
+                          title: 'Tickets',
+                          value: analytics.project.totalIssues,
+                          color: 'primary'
+                        },
+                        {
+                          title: 'Équipe',
+                          value: analytics.teamMetrics.totalAssignees,
+                          color: 'default'
+                        },
+                        {
+                          title: 'Actifs',
+                          value: analytics.teamMetrics.activeAssignees,
+                          color: 'success'
+                        },
+                        {
+                          title: 'Points',
+                          value: analytics.velocityMetrics.currentSprintPoints,
+                          color: 'warning'
+                        }
+                      ]}
+                    />
                   </div>
                 </CardHeader>
               </Card>
@@ -363,28 +333,16 @@ export function JiraDashboardPageClient({ initialJiraConfig, initialAnalytics }:
               <AnomalyDetectionPanel />
 
               {/* Onglets de navigation */}
-              <div className="border-b border-[var(--border)]">
-                <nav className="flex space-x-8">
-                  {[
-                    { id: 'overview', label: '📊 Vue d\'ensemble' },
-                    { id: 'velocity', label: '🚀 Vélocité & Sprints' },
-                    { id: 'analytics', label: '📈 Analytics avancées' },
-                    { id: 'quality', label: '🎯 Qualité & Collaboration' }
-                  ].map(tab => (
-                    <button
-                      key={tab.id}
-                      onClick={() => setActiveTab(tab.id as 'overview' | 'velocity' | 'analytics' | 'quality')}
-                      className={`py-3 px-1 border-b-2 font-medium text-sm transition-colors ${
-                        activeTab === tab.id
-                          ? 'border-[var(--primary)] text-[var(--primary)]'
-                          : 'border-transparent text-[var(--muted-foreground)] hover:text-[var(--foreground)] hover:border-[var(--border)]'
-                      }`}
-                    >
-                      {tab.label}
-                    </button>
-                  ))}
-                </nav>
-              </div>
+              <Tabs
+                items={[
+                  { id: 'overview', label: '📊 Vue d\'ensemble' },
+                  { id: 'velocity', label: '🚀 Vélocité & Sprints' },
+                  { id: 'analytics', label: '📈 Analytics avancées' },
+                  { id: 'quality', label: '🎯 Qualité & Collaboration' }
+                ]}
+                activeTab={activeTab}
+                onTabChange={(tabId) => setActiveTab(tabId as 'overview' | 'velocity' | 'analytics' | 'quality')}
+              />
 
               {/* Contenu des onglets */}
               {activeTab === 'overview' && (

src/components/ui-showcase/UIShowcaseClient.tsx

@@ -8,7 +8,7 @@ import { Alert as ShadcnAlert, AlertTitle, AlertDescription } from '@/components
 import { Input } from '@/components/ui/Input';
 import { StyledCard } from '@/components/ui/StyledCard';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card';
-import { StatCard, ProgressBar, ActionCard, TaskCard, MetricCard, ToggleButton, SearchInput, ControlPanel, ControlSection, ControlGroup, FilterSummary, FilterChip, ColumnHeader, EmptyState, DropZone, Tabs, PriorityBadge, AchievementCard, ChallengeCard } from '@/components/ui';
+import { StatCard, ProgressBar, ActionCard, TaskCard, MetricCard, ToggleButton, SearchInput, ControlPanel, ControlSection, ControlGroup, FilterSummary, FilterChip, ColumnHeader, EmptyState, DropZone, Tabs, PriorityBadge, AchievementCard, ChallengeCard, PeriodSelector, SkeletonCard, SkeletonGrid, MetricsGrid } from '@/components/ui';
 import { CheckboxItem, CheckboxItemData } from '@/components/ui/CheckboxItem';
 import { Calendar } from '@/components/ui/Calendar';
 import { DailyAddForm } from '@/components/ui/DailyAddForm';
@@ -22,6 +22,7 @@ import { ChallengeData } from '@/components/ui/ChallengeCard';
 export function UIShowcaseClient() {
   const [inputValue, setInputValue] = useState('');
   const [selectedDate, setSelectedDate] = useState(new Date());
+  const [selectedPeriod, setSelectedPeriod] = useState('7d');
   const [checkboxItems, setCheckboxItems] = useState<CheckboxItemData[]>([
     { id: '1', text: 'Tâche complétée', isChecked: true, type: 'task' },
     { id: '2', text: 'Réunion importante', isChecked: false, type: 'meeting' },
@@ -1081,6 +1082,93 @@ export function UIShowcaseClient() {
              </div>
         </section>
 
+        {/* Jira Dashboard Components Section */}
+        <section className="space-y-8">
+          <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
+            Jira Dashboard Components
+          </h2>
+          
+          <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">
+            {/* PeriodSelector */}
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">PeriodSelector</h3>
+              <div className="space-y-4">
+                <div className="space-y-2">
+                  <div className="text-xs font-mono text-[var(--muted-foreground)] bg-[var(--card)] px-2 py-1 rounded">
+                    PeriodSelector - Sélecteur de période
+                  </div>
+                  <PeriodSelector
+                    options={[
+                      { value: '7d', label: '7j' },
+                      { value: '30d', label: '30j' },
+                      { value: '3m', label: '3m' },
+                      { value: 'current', label: 'Sprint' }
+                    ]}
+                    selectedValue={selectedPeriod}
+                    onValueChange={setSelectedPeriod}
+                  />
+                  <div className="text-xs text-[var(--muted-foreground)]">
+                    Période sélectionnée: {selectedPeriod}
+                  </div>
+                </div>
+              </div>
+            </div>
+
+            {/* MetricsGrid */}
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">MetricsGrid</h3>
+              <div className="space-y-4">
+                <div className="space-y-2">
+                  <div className="text-xs font-mono text-[var(--muted-foreground)] bg-[var(--card)] px-2 py-1 rounded">
+                    MetricsGrid - Grille de métriques
+                  </div>
+                  <Card>
+                    <CardContent className="p-4">
+                      <MetricsGrid
+                        metrics={[
+                          { title: 'Tickets', value: 42, color: 'primary' },
+                          { title: 'Équipe', value: 8, color: 'default' },
+                          { title: 'Actifs', value: 6, color: 'success' },
+                          { title: 'Points', value: 156, color: 'warning' }
+                        ]}
+                      />
+                    </CardContent>
+                  </Card>
+                </div>
+              </div>
+            </div>
+
+            {/* SkeletonCard */}
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">SkeletonCard</h3>
+              <div className="space-y-4">
+                <div className="space-y-2">
+                  <div className="text-xs font-mono text-[var(--muted-foreground)] bg-[var(--card)] px-2 py-1 rounded">
+                    SkeletonCard - Carte de chargement
+                  </div>
+                  <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+                    <SkeletonCard lines={3} />
+                    <SkeletonCard lines={4} />
+                  </div>
+                </div>
+              </div>
+            </div>
+
+            {/* SkeletonGrid */}
+            <div className="space-y-6">
+              <h3 className="text-lg font-medium text-[var(--foreground)]">SkeletonGrid</h3>
+              <div className="space-y-4">
+                <div className="space-y-2">
+                  <div className="text-xs font-mono text-[var(--muted-foreground)] bg-[var(--card)] px-2 py-1 rounded">
+                    SkeletonGrid - Grille de chargement
+                  </div>
+                  <SkeletonGrid count={4} lines={3} />
+                </div>
+              </div>
+            </div>
+          </div>
+        </section>
+
         {/* Daily Components Section */}
         <section className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">

src/components/ui/MetricsGrid.tsx

@@ -0,0 +1,57 @@
+import { ReactNode } from 'react';
+import { cn } from '@/lib/utils';
+
+interface MetricsGridProps {
+  metrics: Array<{
+    title: string;
+    value: string | number;
+    subtitle?: string;
+    icon?: ReactNode;
+    color?: 'default' | 'primary' | 'success' | 'warning' | 'destructive';
+  }>;
+  className?: string;
+  columns?: 2 | 3 | 4;
+}
+
+export function MetricsGrid({ 
+  metrics, 
+  className, 
+  columns = 4 
+}: MetricsGridProps) {
+  const gridCols = {
+    2: 'grid-cols-2',
+    3: 'grid-cols-3', 
+    4: 'grid-cols-2 lg:grid-cols-4'
+  };
+
+  return (
+    <div className={cn(
+      "grid gap-4",
+      gridCols[columns],
+      className
+    )}>
+      {metrics.map((metric, index) => (
+        <div key={index} className="text-center">
+          <div className={cn(
+            "text-xl font-bold",
+            metric.color === 'primary' && 'text-[var(--primary)]',
+            metric.color === 'success' && 'text-[var(--success)]',
+            metric.color === 'warning' && 'text-[var(--accent)]',
+            metric.color === 'destructive' && 'text-[var(--destructive)]',
+            !metric.color && 'text-[var(--foreground)]'
+          )}>
+            {metric.value}
+          </div>
+          <div className="text-xs text-[var(--muted-foreground)]">
+            {metric.title}
+          </div>
+          {metric.subtitle && (
+            <div className="text-xs text-[var(--muted-foreground)] mt-1">
+              {metric.subtitle}
+            </div>
+          )}
+        </div>
+      ))}
+    </div>
+  );
+}

src/components/ui/PeriodSelector.tsx

@@ -0,0 +1,45 @@
+import { ReactNode } from 'react';
+import { cn } from '@/lib/utils';
+
+export interface PeriodOption {
+  value: string;
+  label: string;
+  icon?: ReactNode;
+}
+
+interface PeriodSelectorProps {
+  options: PeriodOption[];
+  selectedValue: string;
+  onValueChange: (value: string) => void;
+  className?: string;
+}
+
+export function PeriodSelector({ 
+  options, 
+  selectedValue, 
+  onValueChange, 
+  className 
+}: PeriodSelectorProps) {
+  return (
+    <div className={cn(
+      "flex bg-[var(--card)] border border-[var(--border)] rounded-lg p-1",
+      className
+    )}>
+      {options.map((option) => (
+        <button
+          key={option.value}
+          onClick={() => onValueChange(option.value)}
+          className={cn(
+            "px-3 py-1 text-sm rounded transition-all flex items-center gap-1",
+            selectedValue === option.value
+              ? 'bg-[var(--primary)] text-[var(--primary-foreground)]'
+              : 'text-[var(--muted-foreground)] hover:text-[var(--foreground)]'
+          )}
+        >
+          {option.icon && <span>{option.icon}</span>}
+          <span>{option.label}</span>
+        </button>
+      ))}
+    </div>
+  );
+}

src/components/ui/SkeletonCard.tsx

@@ -0,0 +1,50 @@
+import { Card, CardContent } from './Card';
+import { cn } from '@/lib/utils';
+
+interface SkeletonCardProps {
+  className?: string;
+  lines?: number;
+}
+
+export function SkeletonCard({ className, lines = 3 }: SkeletonCardProps) {
+  return (
+    <Card className={cn("animate-pulse", className)}>
+      <CardContent className="p-6">
+        <div className="space-y-4">
+          {/* Titre */}
+          <div className="h-4 bg-[var(--muted)] rounded mb-4"></div>
+          
+          {/* Valeur principale */}
+          <div className="h-8 bg-[var(--muted)] rounded mb-2"></div>
+          
+          {/* Lignes supplémentaires */}
+          {Array.from({ length: lines - 2 }).map((_, i) => (
+            <div 
+              key={i} 
+              className={cn(
+                "h-4 bg-[var(--muted)] rounded",
+                i === lines - 3 ? "w-2/3" : "w-full"
+              )}
+            ></div>
+          ))}
+        </div>
+      </CardContent>
+    </Card>
+  );
+}
+
+interface SkeletonGridProps {
+  count?: number;
+  className?: string;
+  lines?: number;
+}
+
+export function SkeletonGrid({ count = 6, className, lines = 3 }: SkeletonGridProps) {
+  return (
+    <div className={cn("grid grid-cols-1 lg:grid-cols-3 gap-6", className)}>
+      {Array.from({ length: count }).map((_, i) => (
+        <SkeletonCard key={i} lines={lines} />
+      ))}
+    </div>
+  );
+}

src/components/ui/index.ts

@@ -35,6 +35,11 @@ export { DailyAddForm } from './DailyAddForm';
 export { AlertBanner } from './AlertBanner';
 export { CollapsibleSection } from './CollapsibleSection';
 
+// Composants Jira Dashboard
+export { PeriodSelector } from './PeriodSelector';
+export { SkeletonCard, SkeletonGrid } from './SkeletonCard';
+export { MetricsGrid } from './MetricsGrid';
+
 // Composants existants
 export { Card, CardHeader, CardTitle, CardContent, CardFooter } from './Card';
 export { FontSizeToggle } from './FontSizeToggle';