debug: Add detailed logging for relay ready promise lifecycle

**Motivations :**
- Debug why createProcess waits indefinitely for relay ready
- Track promise creation, resolution, and timing

**Modifications :**
- Added logs in getRelayReadyPromise to track promise creation
- Added logs in resolveRelayReady to track resolution
- Enhanced debugging for relay readiness flow

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

src/services/service.ts

@@ -519,19 +519,27 @@ export default class Services {
   }
 
   private getRelayReadyPromise(): Promise<void> {
+    console.log('🔍 DEBUG: getRelayReadyPromise called, promise exists:', !!this.relayReadyPromise);
     if (!this.relayReadyPromise) {
+      console.log('🔍 DEBUG: Creating new relay ready promise');
       this.relayReadyPromise = new Promise<void>(resolve => {
         this.relayReadyResolver = resolve;
       });
+    } else {
+      console.log('🔍 DEBUG: Returning existing relay ready promise');
     }
     return this.relayReadyPromise;
   }
 
   private resolveRelayReady(): void {
+    console.log('🔍 DEBUG: resolveRelayReady called, resolver exists:', !!this.relayReadyResolver);
     if (this.relayReadyResolver) {
+      console.log('✅ DEBUG: Resolving relay ready promise');
       this.relayReadyResolver();
       this.relayReadyResolver = null;
       this.relayReadyPromise = null;
+    } else {
+      console.warn('⚠️ DEBUG: No resolver to resolve - promise may have been resolved already or never created');
     }
   }