Replace initializing service modal with status message

**Motivations :**
- La modale 'Initializing services...' n'est plus nécessaire
- Les messages de statut dans le champ des messages sont plus appropriés
- Simplification de l'interface utilisateur

**Modifications :**
- service.ts : Suppression des fonctions showGlobalLoadingSpinner et hideGlobalLoadingSpinner
- service.ts : Remplacement de la modale par updateUserStatus('🔄 Initializing services...')
- service.ts : Ajout d'un message de succès après initialisation

**Pages affectées :**
- src/services/service.ts : Suppression de la modale et utilisation des messages de statut

src/services/service.ts

@@ -29,101 +29,7 @@ const STORAGEURL = import.meta.env.VITE_STORAGEURL || `${BASEURL}:8081`;
 const BLINDBITURL = import.meta.env.VITE_BLINDBITURL || `${BASEURL}:8000`;
 const DEFAULTAMOUNT = 1000n;
 
-// Global loading spinner functions
-function showGlobalLoadingSpinner(message: string = 'Loading...') {
-  // Remove existing spinner if any
-  hideGlobalLoadingSpinner();
-
-  // Create spinner overlay
-  const overlay = document.createElement('div');
-  overlay.id = 'global-loading-overlay';
-  overlay.style.cssText = `
-    position: fixed;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-    background: rgba(0, 0, 0, 0.8);
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-    align-items: center;
-    z-index: 9999;
-    backdrop-filter: blur(5px);
-  `;
-
-  // Create spinner content
-  const spinnerContent = document.createElement('div');
-  spinnerContent.style.cssText = `
-    background: rgba(255, 255, 255, 0.95);
-    border-radius: 12px;
-    padding: 40px;
-    text-align: center;
-    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
-    border: 1px solid rgba(255, 255, 255, 0.2);
-    max-width: 400px;
-    width: 90%;
-  `;
-
-  // Create spinner
-  const spinner = document.createElement('div');
-  spinner.style.cssText = `
-    width: 50px;
-    height: 50px;
-    border: 4px solid #f3f3f3;
-    border-top: 4px solid #3a506b;
-    border-radius: 50%;
-    animation: spin 1s linear infinite;
-    margin: 0 auto 20px auto;
-  `;
-
-  // Create message
-  const messageEl = document.createElement('div');
-  messageEl.textContent = message;
-  messageEl.style.cssText = `
-    font-size: 16px;
-    color: #3a506b;
-    font-weight: 500;
-    margin-bottom: 10px;
-  `;
-
-  // Create progress indicator
-  const progressEl = document.createElement('div');
-  progressEl.textContent = 'Please wait...';
-  progressEl.style.cssText = `
-    font-size: 14px;
-    color: #666;
-  `;
-
-  // Add CSS animation if not already present
-  if (!document.getElementById('global-spinner-styles')) {
-    const style = document.createElement('style');
-    style.id = 'global-spinner-styles';
-    style.textContent = `
-      @keyframes spin {
-        0% { transform: rotate(0deg); }
-        100% { transform: rotate(360deg); }
-      }
-    `;
-    document.head.appendChild(style);
-  }
-
-  // Assemble spinner
-  spinnerContent.appendChild(spinner);
-  spinnerContent.appendChild(messageEl);
-  spinnerContent.appendChild(progressEl);
-  overlay.appendChild(spinnerContent);
-
-  // Add to document
-  document.body.appendChild(overlay);
-}
-
-function hideGlobalLoadingSpinner() {
-  const overlay = document.getElementById('global-loading-overlay');
-  if (overlay) {
-    overlay.remove();
-  }
-}
+// Global loading spinner functions removed - now using updateUserStatus instead
 const EMPTY32BYTES = String('').padStart(64, '0');
 
 export default class Services {
@@ -207,8 +113,8 @@ export default class Services {
       }
     }
 
-    // Show global loading spinner during initialization
-    showGlobalLoadingSpinner('Initializing services...');
+    // Update user status during initialization
+    this.updateUserStatus('🔄 Initializing services...');
 
     // Add WebAssembly memory optimization and error handling
     try {
@@ -342,8 +248,8 @@ export default class Services {
       throw error;
     }
 
-    // Hide loading spinner after initialization
-    hideGlobalLoadingSpinner();
+    // Update user status after successful initialization
+    this.updateUserStatus('✅ Services initialized successfully');
 
     return Services.instance;
   }