fix: Improve relay readiness logic and prevent iframe initialization in full page

**Motivations :**
- Fix 'Waiting for relays to be ready...' issue by properly waiting for relay spAddress
- Prevent unnecessary iframe creation when application runs in full page mode
- Improve relay address validation logic

**Modifications :**
- Enhanced createProcess to properly wait for relay spAddress before proceeding
- Added better relay address validation with non-empty string check
- Conditional iframe initialization only when running in iframe context
- Added debug logging for available relays when address not found

**Pages affectées :**
- src/services/service.ts - Relay readiness logic
- src/pages/home/home.ts - Conditional iframe initialization

src/pages/home/home.ts

@@ -108,10 +108,12 @@ export async function initHomePage(): Promise<void> {
   // Show loading spinner during home page initialization
   showHomeLoadingSpinner('Initializing pairing interface...');
 
-  // Initialize iframe pairing, content menu, and communication
+  // Initialize iframe pairing, content menu, and communication only if in iframe
+  if (window.parent !== window) {
     initIframePairing();
     initContentMenu();
     initIframeCommunication();
+  }
 
   // Set up iframe pairing button listeners
   setupIframePairingButtons();

src/services/service.ts

@@ -829,22 +829,25 @@ export default class Services {
     publicData: Record<string, any>,
     roles: Record<string, RoleDefinition>
   ): Promise<ApiReturn> {
-    let relayAddress = this.getAllRelays()[0]?.spAddress;
-
-    if (!relayAddress) {
+    // Attendre que le relai soit prêt avec son spAddress
     console.log('⏳ Waiting for relays to be ready...');
     // Update UI status
     const { updateCreatorStatus } = await import('../utils/sp-address.utils');
     updateCreatorStatus('⏳ Waiting for relays to be ready...');
 
     await this.getRelayReadyPromise();
-      relayAddress = this.getAllRelays()[0]?.spAddress;
-    }
+    
+    // Vérifier que nous avons maintenant un spAddress
+    const relays = this.getAllRelays();
+    const relayAddress = relays.find(relay => relay.spAddress && relay.spAddress.trim() !== '')?.spAddress;
 
     if (!relayAddress) {
+      console.error('Available relays:', relays);
       throw new Error('❌ No relay address available after waiting');
     }
 
+    console.log('✅ Relay address found:', relayAddress);
+
     const feeRate = 1;
 
     // We can't encode files as the rest because Uint8Array is not valid json