Fix faucet timing - move to pairing page after credentials creation

**Motivations :**
- Le faucet s'exécute pendant birthday-setup mais les credentials n'existent pas encore
- Cela cause des erreurs 'No credentials found' et 'WebAuthn decryption required'
- Le faucet doit s'exécuter après la création des credentials dans la page de pairing

**Modifications :**
- src/services/service.ts : Désactivation de l'appel automatique du faucet dans updateDeviceBlockHeight()
- src/services/service.ts : Rendre getTokensFromFaucet() public pour l'appeler depuis home.ts
- src/pages/home/home.ts : Ajout de l'appel du faucet après la création des credentials

**Pages affectées :**
- src/services/service.ts : Amélioration de la gestion du faucet
- src/pages/home/home.ts : Ajout de l'appel du faucet au bon moment

src/pages/home/home.ts

@@ -723,6 +723,17 @@ async function handleMainPairing(): Promise<void> {
         await secureCredentialsService.storeCredentials(credentialData, '');
         console.log('✅ Credentials stored successfully');
 
+        // Request faucet tokens now that credentials are available
+        console.log('🪙 Requesting faucet tokens for pairing...');
+        try {
+          const services = await Services.getInstance();
+          await services.getTokensFromFaucet();
+          console.log('✅ Faucet tokens requested successfully');
+        } catch (error) {
+          console.warn('⚠️ Failed to request faucet tokens:', error);
+          // Don't throw - this is not critical for pairing
+        }
+
         // Decrypt and make keys available to SDK
         console.log('🔓 Decrypting credentials for SDK access...');
         if (mainStatus) {

src/services/service.ts

@@ -644,7 +644,7 @@ export default class Services {
     return res;
   }
 
-  private async getTokensFromFaucet(): Promise<void> {
+  public async getTokensFromFaucet(): Promise<void> {
       await this.ensureSufficientAmount();
   }
 
@@ -2362,15 +2362,9 @@ export default class Services {
           throw new Error(`Final save verification failed: expected last_scan ${this.currentBlockHeight}, got ${finalDevice?.sp_wallet?.last_scan}`);
         }
 
-        // Request faucet tokens for new wallet
-        console.log('🪙 Requesting faucet tokens for new wallet...');
-        try {
-          await this.getTokensFromFaucet();
-          console.log('✅ Faucet tokens requested successfully');
-        } catch (error) {
-          console.warn('⚠️ Failed to request faucet tokens:', error);
-          // Don't throw - this is not critical for wallet creation
-        }
+        // Note: Faucet tokens will be requested later in the pairing process
+        // when credentials are available
+        console.log('🪙 Faucet tokens will be requested during pairing process');
 
         console.log('✅ updateDeviceBlockHeight completed successfully for new device');
         return;