debug: Add detailed logging for handshake sp_address

**Motivations :**
- Debug why sp_address is empty in handshake message
- Understand why relay readiness check fails

**Modifications :**
- Added detailed logging in handleHandshakeMsg to inspect sp_address
- Added warning when sp_address is empty or undefined

**Pages affectées :**
- src/services/service.ts - Enhanced handshake debugging

src/services/service.ts

@@ -836,7 +836,7 @@ export default class Services {
     updateCreatorStatus('⏳ Waiting for relays to be ready...');
 
     await this.getRelayReadyPromise();
-    
+
     // Vérifier que nous avons maintenant un spAddress
     const relays = this.getAllRelays();
     const relayAddress = relays.find(relay => relay.spAddress && relay.spAddress.trim() !== '')?.spAddress;
@@ -2109,10 +2109,20 @@ export default class Services {
   public async handleHandshakeMsg(url: string, parsedMsg: any) {
     try {
       const handshakeMsg: HandshakeMessage = JSON.parse(parsedMsg);
+      console.log('🔍 DEBUG: Handshake message received:', {
+        url,
+        hasSpAddress: !!handshakeMsg.sp_address,
+        spAddress: handshakeMsg.sp_address,
+        spAddressType: typeof handshakeMsg.sp_address,
+        spAddressLength: handshakeMsg.sp_address?.length
+      });
+      
       if (handshakeMsg.sp_address) {
         this.updateRelay(url, handshakeMsg.sp_address);
         this.relayAddresses[url] = handshakeMsg.sp_address;
         this.resolveRelayReady();
+      } else {
+        console.warn('⚠️ Handshake received but sp_address is empty or undefined');
       }
 
       console.log('handshakeMsg:', handshakeMsg);