diff --git a/batch_ia/batch-fabnum.service b/batch_ia/batch-fabnum.service
new file mode 100644
index 0000000..8960e71
--- /dev/null
+++ b/batch_ia/batch-fabnum.service
@@ -0,0 +1,31 @@
+[Unit]
+Description=Service batch IA pour utilisateur fabnum
+After=network.target
+
+[Service]
+Type=simple
+User=fabnum
+WorkingDirectory=/home/fabnum/fabnum-public/batch_ia
+Environment=PYTHONPATH=/home/fabnum/fabnum-public
+ExecStart=/home/fabnum/fabnum-public/venv/bin/python /home/fabnum/fabnum-public/batch_ia/batch_runner.py
+Restart=always
+Nice=10
+CPUSchedulingPolicy=batch
+
+# Limites de ressources
+CPUQuota=87.5%            # ~14 cores sur 16
+MemoryMax=12G             # RAM maximale autorisée
+TasksMax=1                # maximum 1 subprocess/thread simultané
+
+# Sécurité renforcée
+ProtectSystem=full
+ReadWritePaths=/home/fabnum/fabnum-public/batch_ia
+
+# Journal propre
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target
+
+# semanage fcontext -a -t svirt_sandbox_file_t "/home/fabnum/fabnum-dev/batch_ia(/.*)?"
diff --git a/batch_ia/batch_utils.py b/batch_ia/batch_utils.py
index 730be61..09be3ea 100644
--- a/batch_ia/batch_utils.py
+++ b/batch_ia/batch_utils.py
@@ -3,6 +3,14 @@ import time
 from pathlib import Path
 from networkx.drawing.nx_agraph import write_dot
 import streamlit as st
+import sys
+import os
+
+current_file = os.path.realpath(__file__)
+parent_dir = os.path.abspath(os.path.join(os.path.dirname(current_file), '..'))
+if parent_dir not in sys.path:
+    sys.path.insert(0, parent_dir)
+
 from utils.translations import _
 
 BATCH_DIR = Path(__file__).resolve().parent
diff --git a/utils/__init__.py b/utils/__init__.py
new file mode 100644
index 0000000..e69de29