feat: add system info and backup functionalities to settings page

- Integrated system info fetching in `SettingsPage` for improved user insights.
- Enhanced `SettingsIndexPageClient` with manual backup creation and Jira connection testing features.
- Added loading states and auto-dismiss messages for user feedback during actions.
- Updated UI to display system info and backup statistics dynamically.

components/settings/SettingsIndexPageClient.tsx

@@ -5,12 +5,102 @@ import { Header } from '@/components/ui/Header';
 import { Card, CardHeader, CardContent } from '@/components/ui/Card';
 import { UserPreferencesProvider } from '@/contexts/UserPreferencesContext';
 import Link from 'next/link';
+import { useState, useEffect, useTransition } from 'react';
+import { backupClient } from '@/clients/backup-client';
+import { jiraClient } from '@/clients/jira-client';
+import { getSystemInfo } from '@/actions/system-info';
+import { SystemInfo } from '@/services/system-info';
 
 interface SettingsIndexPageClientProps {
   initialPreferences: UserPreferences;
+  initialSystemInfo?: SystemInfo;
 }
 
-export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPageClientProps) {
+export function SettingsIndexPageClient({ initialPreferences, initialSystemInfo }: SettingsIndexPageClientProps) {
+  // États pour les actions
+  const [isBackupLoading, setIsBackupLoading] = useState(false);
+  const [isJiraTestLoading, setIsJiraTestLoading] = useState(false);
+  const [systemInfo, setSystemInfo] = useState<SystemInfo | null>(initialSystemInfo || null);
+  const [messages, setMessages] = useState<{
+    backup?: { type: 'success' | 'error', text: string };
+    jira?: { type: 'success' | 'error', text: string };
+  }>({});
+  
+  // useTransition pour le server action
+  const [isSystemInfoLoading, startTransition] = useTransition();
+
+  // Fonction pour recharger les infos système (server action)
+  const loadSystemInfo = () => {
+    startTransition(async () => {
+      try {
+        const result = await getSystemInfo();
+        if (result.success && result.data) {
+          setSystemInfo(result.data);
+        } else {
+          console.error('Error loading system info:', result.error);
+        }
+      } catch (error) {
+        console.error('Error loading system info:', error);
+      }
+    });
+  };
+
+  // Fonction pour créer une sauvegarde manuelle
+  const handleCreateBackup = async () => {
+    setIsBackupLoading(true);
+    try {
+      const backup = await backupClient.createBackup();
+      setMessages(prev => ({
+        ...prev,
+        backup: { type: 'success', text: `Sauvegarde créée: ${backup.filename}` }
+      }));
+      
+      // Recharger les infos système pour mettre à jour le nombre de sauvegardes
+      loadSystemInfo();
+    } catch {
+      setMessages(prev => ({
+        ...prev,
+        backup: { type: 'error', text: 'Erreur lors de la création de la sauvegarde' }
+      }));
+    } finally {
+      setIsBackupLoading(false);
+    }
+  };
+
+  // Fonction pour tester la connexion Jira
+  const handleTestJira = async () => {
+    setIsJiraTestLoading(true);
+    try {
+      const status = await jiraClient.testConnection();
+      setMessages(prev => ({
+        ...prev,
+        jira: { 
+          type: status.connected ? 'success' : 'error', 
+          text: status.connected ? 'Connexion Jira réussie !' : `Erreur: ${status.message || 'Connexion échouée'}` 
+        }
+      }));
+    } catch {
+      setMessages(prev => ({
+        ...prev,
+        jira: { type: 'error', text: 'Erreur lors du test de connexion Jira' }
+      }));
+    } finally {
+      setIsJiraTestLoading(false);
+    }
+  };
+
+  // Auto-dismiss des messages après 5 secondes
+  useEffect(() => {
+    Object.keys(messages).forEach(key => {
+      if (messages[key as keyof typeof messages]) {
+        const timer = setTimeout(() => {
+          setMessages(prev => ({ ...prev, [key]: undefined }));
+        }, 5000);
+        return () => clearTimeout(timer);
+      }
+    });
+  }, [messages]);
+
   const settingsPages = [
     {
       href: '/settings/general',
@@ -63,7 +153,7 @@ export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPag
             </div>
 
             {/* Quick Stats */}
-            <div className="grid grid-cols-1 md:grid-cols-3 gap-4 mb-8">
+            <div className="grid grid-cols-1 md:grid-cols-4 gap-4 mb-8">
               <Card>
                 <CardContent className="p-4">
                   <div className="flex items-center gap-3">
@@ -82,9 +172,14 @@ export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPag
                     <span className="text-2xl">🔌</span>
                     <div>
                       <p className="text-sm text-[var(--muted-foreground)]">Jira</p>
-                      <p className="font-medium">
-                        {initialPreferences.jiraConfig.enabled ? 'Configuré' : 'Non configuré'}
-                      </p>
+                      <div className="flex items-center gap-2">
+                        <p className="font-medium">
+                          {initialPreferences.jiraConfig.enabled ? 'Configuré' : 'Non configuré'}
+                        </p>
+                        {initialPreferences.jiraConfig.enabled && (
+                          <span className="w-2 h-2 bg-green-500 rounded-full" title="Jira configuré"></span>
+                        )}
+                      </div>
                     </div>
                   </div>
                 </CardContent>
@@ -101,6 +196,20 @@ export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPag
                   </div>
                 </CardContent>
               </Card>
+              
+              <Card>
+                <CardContent className="p-4">
+                  <div className="flex items-center gap-3">
+                    <span className="text-2xl">💾</span>
+                    <div>
+                      <p className="text-sm text-[var(--muted-foreground)]">Sauvegardes</p>
+                      <p className="font-medium">
+                        {systemInfo ? systemInfo.database.totalBackups : '...'}
+                      </p>
+                    </div>
+                  </div>
+                </CardContent>
+              </Card>
             </div>
 
             {/* Settings Sections */}
@@ -168,9 +277,22 @@ export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPag
                         <p className="text-sm text-[var(--muted-foreground)]">
                           Créer une sauvegarde des données
                         </p>
+                        {messages.backup && (
+                          <p className={`text-xs mt-1 ${
+                            messages.backup.type === 'success' 
+                              ? 'text-green-600 dark:text-green-400' 
+                              : 'text-red-600 dark:text-red-400'
+                          }`}>
+                            {messages.backup.text}
+                          </p>
+                        )}
                       </div>
-                      <button className="px-3 py-1.5 bg-[var(--primary)] text-[var(--primary-foreground)] rounded text-sm">
-                        Sauvegarder
+                      <button 
+                        onClick={handleCreateBackup}
+                        disabled={isBackupLoading}
+                        className="px-3 py-1.5 bg-[var(--primary)] text-[var(--primary-foreground)] rounded text-sm disabled:opacity-50 disabled:cursor-not-allowed"
+                      >
+                        {isBackupLoading ? 'En cours...' : 'Sauvegarder'}
                       </button>
                     </div>
                   </CardContent>
@@ -184,12 +306,22 @@ export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPag
                         <p className="text-sm text-[var(--muted-foreground)]">
                           Tester la connexion Jira
                         </p>
+                        {messages.jira && (
+                          <p className={`text-xs mt-1 ${
+                            messages.jira.type === 'success' 
+                              ? 'text-green-600 dark:text-green-400' 
+                              : 'text-red-600 dark:text-red-400'
+                          }`}>
+                            {messages.jira.text}
+                          </p>
+                        )}
                       </div>
                       <button 
-                        className="px-3 py-1.5 bg-[var(--card)] text-[var(--foreground)] border border-[var(--border)] rounded text-sm"
-                        disabled={!initialPreferences.jiraConfig.enabled}
+                        onClick={handleTestJira}
+                        disabled={!initialPreferences.jiraConfig.enabled || isJiraTestLoading}
+                        className="px-3 py-1.5 bg-[var(--card)] text-[var(--foreground)] border border-[var(--border)] rounded text-sm disabled:opacity-50 disabled:cursor-not-allowed"
                       >
-                        Tester
+                        {isJiraTestLoading ? 'Test...' : 'Tester'}
                       </button>
                     </div>
                   </CardContent>
@@ -200,23 +332,66 @@ export function SettingsIndexPageClient({ initialPreferences }: SettingsIndexPag
             {/* System Info */}
             <Card className="mt-8">
               <CardHeader>
-                <h2 className="text-lg font-semibold">ℹ️ Informations système</h2>
+                <div className="flex items-center justify-between">
+                  <h2 className="text-lg font-semibold">ℹ️ Informations système</h2>
+                  <button 
+                    onClick={loadSystemInfo}
+                    disabled={isSystemInfoLoading}
+                    className="text-xs px-2 py-1 bg-[var(--card)] border border-[var(--border)] rounded hover:bg-[var(--card-hover)] disabled:opacity-50 disabled:cursor-not-allowed"
+                  >
+                    {isSystemInfoLoading ? '🔄 Chargement...' : '🔄 Actualiser'}
+                  </button>
+                </div>
               </CardHeader>
               <CardContent>
-                <div className="grid grid-cols-1 md:grid-cols-3 gap-4 text-sm">
-                  <div>
-                    <p className="text-[var(--muted-foreground)]">Version</p>
-                    <p className="font-medium">TowerControl v1.0.0</p>
+                {systemInfo ? (
+                  <>
+                    <div className="grid grid-cols-1 md:grid-cols-4 gap-4 text-sm mb-4">
+                      <div>
+                        <p className="text-[var(--muted-foreground)]">Version</p>
+                        <p className="font-medium">TowerControl v{systemInfo.version}</p>
+                      </div>
+                      <div>
+                        <p className="text-[var(--muted-foreground)]">Dernière maj</p>
+                        <p className="font-medium">{systemInfo.lastUpdate}</p>
+                      </div>
+                      <div>
+                        <p className="text-[var(--muted-foreground)]">Environnement</p>
+                        <p className="font-medium capitalize">{systemInfo.environment}</p>
+                      </div>
+                      <div>
+                        <p className="text-[var(--muted-foreground)]">Uptime</p>
+                        <p className="font-medium">{systemInfo.uptime}</p>
+                      </div>
+                    </div>
+                    
+                    <div className="border-t border-[var(--border)] pt-4">
+                      <h3 className="text-sm font-medium mb-3 text-[var(--muted-foreground)]">Base de données</h3>
+                      <div className="grid grid-cols-1 md:grid-cols-4 gap-4 text-sm">
+                        <div>
+                          <p className="text-[var(--muted-foreground)]">Tâches</p>
+                          <p className="font-medium">{systemInfo.database.totalTasks}</p>
+                        </div>
+                        <div>
+                          <p className="text-[var(--muted-foreground)]">Utilisateurs</p>
+                          <p className="font-medium">{systemInfo.database.totalUsers}</p>
+                        </div>
+                        <div>
+                          <p className="text-[var(--muted-foreground)]">Sauvegardes</p>
+                          <p className="font-medium">{systemInfo.database.totalBackups}</p>
+                        </div>
+                        <div>
+                          <p className="text-[var(--muted-foreground)]">Taille DB</p>
+                          <p className="font-medium">{systemInfo.database.databaseSize}</p>
+                        </div>
+                      </div>
+                    </div>
+                  </>
+                ) : (
+                  <div className="text-center py-4">
+                    <p className="text-[var(--muted-foreground)]">Chargement des informations système...</p>
                   </div>
-                  <div>
-                    <p className="text-[var(--muted-foreground)]">Dernière maj</p>
-                    <p className="font-medium">Il y a 2 jours</p>
-                  </div>
-                  <div>
-                    <p className="text-[var(--muted-foreground)]">Env</p>
-                    <p className="font-medium">Development</p>
-                  </div>
-                </div>
+                )}
               </CardContent>
             </Card>
           </div>