fix: Stabilité Browserless v2 + headers anti-détection

Browserless (docker-compose.yml):
- Image mise à jour: ghcr.io/browserless/chromium:latest
- Timeout augmenté à 300s (5 minutes)
- shm_size: 2gb (critique pour Chrome)
- Mémoire: 3G limit, 1G reservation
- Nouvelles variables: HEALTH, CHROME_REFRESH_TIME

Scraper Service:
- Ajout headers HTTP réalistes (Accept-Language, Accept)
- Locale fr-FR et timezone Europe/Paris
- Timeout connexion explicite (60s)
- Fermeture propre des ressources (page, context, browser)
- Meilleure gestion des erreurs de fermeture

docker-compose.yml

@@ -49,26 +49,34 @@ services:
 
   # Browserless - Navigateur headless pour le scraping
   browserless:
-    image: browserless/chrome:latest
+    image: ghcr.io/browserless/chromium:latest
     container_name: priceflow-browserless
     restart: unless-stopped
     ports:
       - "3012:3000"
     environment:
-      - MAX_CONCURRENT_SESSIONS=3
-      - CONNECTION_TIMEOUT=180000
-      - MAX_QUEUE_LENGTH=5
-      - PREBOOT_CHROME=true
-      - KEEP_ALIVE=true
-      - DEFAULT_BLOCK_ADS=true
+      # Timeouts
+      - TIMEOUT=300000
+      - CONNECTION_TIMEOUT=300000
+      # Sessions
+      - CONCURRENT=3
+      - QUEUED=5
+      # Options de stabilité
+      - HEALTH=true
+      - EXIT_ON_HEALTH_FAILURE=true
+      # Options Chrome
+      - DEFAULT_HEADLESS=true
       - DEFAULT_STEALTH=true
-      - ENABLE_DEBUGGER=false
-      - DISABLED_FEATURES=gpu
-      - DEFAULT_LAUNCH_ARGS=["--disable-dev-shm-usage","--no-sandbox","--disable-setuid-sandbox"]
+      - DEFAULT_BLOCK_ADS=true
+      - DEFAULT_IGNORE_HTTPS_ERRORS=true
+      - CHROME_REFRESH_TIME=3600000
     deploy:
       resources:
         limits:
-          memory: 2G
+          memory: 3G
+        reservations:
+          memory: 1G
+    shm_size: '2gb'
     networks:
       - nginx_default