Enable tray icon and fix build scripts

desktop/build-windows.bat

@@ -24,11 +24,14 @@ curl -L -o python-embed.zip "https://www.python.org/ftp/python/3.11.9/python-3.1
 powershell Expand-Archive -Path python-embed.zip -DestinationPath python-embed\
 del python-embed.zip
 
-REM Enable pip in embedded Python
+REM Enable pip and site-packages in embedded Python
 echo import site >> python-embed\python311._pth
 
-REM Bootstrap pip (embed Python doesn't include it)
-python-embed\python.exe -m ensurepip --upgrade
+REM Download get-pip.py (embed Python doesn't include ensurepip)
+echo 📥 Downloading get-pip.py...
+curl -L -o get-pip.py "https://bootstrap.pypa.io/get-pip.py"
+python-embed\python.exe get-pip.py --no-cache-dir
+del get-pip.py
 
 REM Install dependencies
 python-embed\python.exe -m pip install --no-cache-dir -r ..\backend\requirements.txt
@@ -48,9 +51,14 @@ echo [4/5] Copying runtime to output dir...
 set "OUTDIR=target\x86_64-pc-windows-msvc\release"
 if exist "%OUTDIR%\python-embed" rmdir /s /q "%OUTDIR%\python-embed"
 if exist "%OUTDIR%\backend" rmdir /s /q "%OUTDIR%\backend"
+if exist "%OUTDIR%\frontend" rmdir /s /q "%OUTDIR%\frontend"
 xcopy /E /I /Q "python-embed" "%OUTDIR%\python-embed"
 xcopy /E /I /Q "..\backend" "%OUTDIR%\backend"
-echo ✅ Runtime copied
+xcopy /E /I /Q "..\frontend" "%OUTDIR%\frontend"
+
+REM Add parent directory to Python path so 'import backend' works at runtime
+echo ..>> "%OUTDIR%\python-embed\python311._pth"
+echo ✅ Runtime + frontend copied + sys.path fixed
 
 REM ── 5. Résultats ───────────────────────────────────────────────
 echo [5/5] Results: