fix(installer): configure_embed saute pip si deps deja embarquees (install offline)

Quand l'embed est livre complet (socketio + tkinter pre-embarques),
le bootstrap get-pip.py + pip install echouait hors-ligne. Ajout d'un
guard : si 'import socketio, tkinter' OK -> on saute pip (offline).
Mode online legacy conserve si embed nu.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

deploy/installer/configure_embed.ps1

@@ -40,23 +40,32 @@ if ($PthFile) {
 }
 
 # ---------------------------------------------------------------
-# 2. Installer pip (bootstrap via get-pip.py)
+# 2-3. Dependances Python
+#    Si l'embed est livre complet (deps + tkinter pre-embarques),
+#    on saute le bootstrap pip / install : INSTALL HORS-LIGNE possible.
+#    Sinon (embed nu), on bootstrap pip + installe requirements (mode online).
 # ---------------------------------------------------------------
-$GetPip = Join-Path $env:TEMP "get-pip.py"
-Write-Host "  Telechargement de get-pip.py..."
-Invoke-WebRequest -Uri "https://bootstrap.pypa.io/get-pip.py" -OutFile $GetPip -UseBasicParsing
+$DepsOk = $false
+& $PythonExe -c "import socketio, tkinter" 2>$null
+if ($LASTEXITCODE -eq 0) { $DepsOk = $true }
 
-Write-Host "  Installation de pip..."
-& $PythonExe $GetPip --no-warn-script-location
-Remove-Item $GetPip -Force
+if ($DepsOk) {
+    Write-Host "  Dependances deja embarquees (socketio + tkinter) - pip saute (offline OK)."
+} else {
+    # Bootstrap pip (necessite internet)
+    $GetPip = Join-Path $env:TEMP "get-pip.py"
+    Write-Host "  Telechargement de get-pip.py..."
+    Invoke-WebRequest -Uri "https://bootstrap.pypa.io/get-pip.py" -OutFile $GetPip -UseBasicParsing
 
-# ---------------------------------------------------------------
-# 3. Installer les dependances
-# ---------------------------------------------------------------
-$Requirements = Join-Path $AppDir "requirements_agent.txt"
-if (Test-Path $Requirements) {
-    Write-Host "  Installation des dependances Python..."
-    & $PythonExe -m pip install --no-warn-script-location -r $Requirements
+    Write-Host "  Installation de pip..."
+    & $PythonExe $GetPip --no-warn-script-location
+    Remove-Item $GetPip -Force
+
+    $Requirements = Join-Path $AppDir "requirements_agent.txt"
+    if (Test-Path $Requirements) {
+        Write-Host "  Installation des dependances Python..."
+        & $PythonExe -m pip install --no-warn-script-location -r $Requirements
+    }
 }
 
 # ---------------------------------------------------------------