Fix: Auto-detect WebSocket URL for Hugging Face environment

frontend/src/config/api.js

@@ -2,4 +2,11 @@
 export const API_LLM = import.meta.env.VITE_API_URL_LLM || '/api/llm/generate';
 export const API_TTS = import.meta.env.VITE_API_URL_TTS || '/api/tts/generate-tts';
 export const API_STT = import.meta.env.VITE_API_URL_STT || '/api/stt/transcribe';
-export const WS_URL  = import.meta.env.VITE_WS_URL || 'ws://localhost:7860/ws';
+export const WS_URL  = import.meta.env.VITE_WS_URL || (() => {
+    // Auto-détection de l'URL WebSocket basée sur l'environnement
+    if (window.location.protocol === 'https:') {
+        return `wss://${window.location.host}/ws`;
+    } else {
+        return `ws://${window.location.host}/ws`;
+    }
+})();