diff --git a/agent_v0/agent_v1/requirements.txt b/agent_v0/agent_v1/requirements.txt
index e1a07c190..2067ac802 100644
--- a/agent_v0/agent_v1/requirements.txt
+++ b/agent_v0/agent_v1/requirements.txt
@@ -3,6 +3,7 @@ mss>=9.0.1              # Capture d'écran haute performance
 pynput>=1.7.7           # Clavier/Souris Cross-plateforme
 Pillow>=10.0.0          # Crops et processing image
 requests>=2.31.0        # Streaming réseau
+httpx>=0.27             # Client HTTP orchestrateur Léa (POST /api/learn/start) — brique conversationnelle
 python-socketio[client]>=5.10,<6.0  # Bus feedback Léa 'lea:*' (compat Flask-SocketIO 5.3.x serveur)
 psutil>=5.9.0           # Monitoring CPU/RAM
 screeninfo>=0.8         # QW1 — détection des monitors physiques + offsets
diff --git a/deploy/build_package_full.sh b/deploy/build_package_full.sh
index 6947926bd..2c5ecc581 100755
--- a/deploy/build_package_full.sh
+++ b/deploy/build_package_full.sh
@@ -208,6 +208,7 @@ REQUIRED=(
     "Lea/python-embed/Lib/site-packages/mss"
     "Lea/python-embed/Lib/site-packages/win32"
     "Lea/python-embed/Lib/site-packages/socketio"
+    "Lea/python-embed/Lib/site-packages/httpx"
 )
 MISSING=()
 for f in "${REQUIRED[@]}"; do
diff --git a/deploy/installer/README.md b/deploy/installer/README.md
index db5cf39d3..5ba0348b1 100644
--- a/deploy/installer/README.md
+++ b/deploy/installer/README.md
@@ -81,16 +81,29 @@ cd deploy/installer
 wget https://www.python.org/ftp/python/3.12.8/python-3.12.8-embed-amd64.zip
 mkdir python-3.12-embed
 unzip python-3.12.8-embed-amd64.zip -d python-3.12-embed/
+
+# IMPORTANT : l'embed doit contenir TOUTES les dependances HORS LIGNE.
+# Le runtime client ne fait AUCUN pip/reseau (POC clinique). On installe donc
+# les dependances une fois dans l'embed, puis on le commit/reutilise tel quel :
+python312._pth  # decommenter 'import site'
+python -m pip install --target python-3.12-embed/Lib/site-packages \
+    -r ../lea_package/requirements_agent.txt
+# => doit inclure httpx (+ httpcore, h11) pour l'orchestrateur Lea (POST /api/learn/start).
 ```
 
 Le staging copie automatiquement ce dossier si present. Le composant
 "pythonembed" devient alors selectionnable dans l'installeur.
 
-Le script `configure_embed.ps1` :
+Le script `configure_embed.ps1` (execute a l'installation, sur le poste) :
 1. Patche `python312._pth` pour activer `import site`
-2. Installe `pip` via `get-pip.py`
-3. Installe `requirements_agent.txt`
-4. Reecrit `Lea.bat` pour pointer sur `python-embed\pythonw.exe`
+2. VERIFIE que les dependances sont deja embarquees (offline, aucun pip/reseau) —
+   `socketio, tkinter, mss, pynput, pystray, plyer, requests, httpx, PIL, win32api` ;
+   si une dependance manque, l'installation echoue explicitement.
+3. Reecrit `Lea.bat` pour pointer sur `python-embed\pythonw.exe`
+
+> Note : `build_installer.sh` et `build_package_full.sh` valident aussi la presence
+> des paquets (dont `httpx`, `httpcore`, `h11`) dans `Lib/site-packages/` avant de
+> produire le paquet — un embed incomplet interrompt le build cote Linux.
 
 ## Installation silencieuse (deploiement de masse)
 
diff --git a/deploy/installer/build_installer.sh b/deploy/installer/build_installer.sh
index 7507e8e0a..e82bff38e 100755
--- a/deploy/installer/build_installer.sh
+++ b/deploy/installer/build_installer.sh
@@ -154,6 +154,7 @@ REQUIRED_EMBED=(
     "Lib/site-packages/pystray" "Lib/site-packages/plyer"
     "Lib/site-packages/requests" "Lib/site-packages/PIL"
     "Lib/site-packages/win32"
+    "Lib/site-packages/httpx" "Lib/site-packages/httpcore" "Lib/site-packages/h11"
 )
 MISSING_EMBED=()
 for f in "${REQUIRED_EMBED[@]}"; do
diff --git a/deploy/installer/configure_embed.ps1 b/deploy/installer/configure_embed.ps1
index fffd916ef..5f6b2b6dd 100644
--- a/deploy/installer/configure_embed.ps1
+++ b/deploy/installer/configure_embed.ps1
@@ -44,7 +44,7 @@ if ($PthFile) {
 #    L'embed DOIT contenir toutes les dependances runtime.
 #    AUCUN pip, AUCUN reseau : si une dependance manque -> echec explicite.
 # ---------------------------------------------------------------
-$RequiredModules = @('socketio','tkinter','mss','pynput','pystray','plyer','requests','PIL','win32api')
+$RequiredModules = @('socketio','tkinter','mss','pynput','pystray','plyer','requests','httpx','PIL','win32api')
 $Missing = @()
 foreach ($m in $RequiredModules) {
     & $PythonExe -c "import $m" 2>$null
diff --git a/deploy/lea_package/requirements_agent.txt b/deploy/lea_package/requirements_agent.txt
index 5a1beefbd..ccad751b7 100644
--- a/deploy/lea_package/requirements_agent.txt
+++ b/deploy/lea_package/requirements_agent.txt
@@ -5,6 +5,7 @@ mss>=9.0.1              # Capture d'ecran haute performance
 pynput>=1.7.7           # Clavier/Souris
 Pillow>=10.0.0          # Traitement image (crops, compression)
 requests>=2.31.0        # Communication serveur
+httpx>=0.27             # Client HTTP orchestrateur Lea (POST /api/learn/start) - brique conversationnelle
 psutil>=5.9.0           # Monitoring CPU/RAM
 pystray>=0.19.5         # Icone systray
 plyer>=2.1.0            # Notifications toast natives