feat: AR-ElecArrangement initial commit — Python FastAPI + uvicorn (LAN desktop app, packaged as .exe via PyInstaller)

install.bat

@@ -0,0 +1,41 @@
+@echo off
+title AR-ElecArrangement — Instalación de dependencias
+cd /d "%~dp0"
+
+echo.
+echo  =====================================================
+echo   AR-ElecArrangement — Setup del entorno Python
+echo  =====================================================
+echo.
+
+:: 1. Crear venv si no existe
+if not exist "%~dp0venv\Scripts\python.exe" (
+    echo [1/3] Creando entorno virtual...
+    python -m venv venv
+    if errorlevel 1 (
+        echo ERROR: no se pudo crear venv. Verifica que Python 3.11+ esté instalado.
+        pause
+        exit /b 1
+    )
+) else (
+    echo [1/3] Entorno virtual ya existe, salto.
+)
+
+:: 2. Actualizar pip
+echo [2/3] Actualizando pip...
+"%~dp0venv\Scripts\python.exe" -m pip install --upgrade pip >nul
+
+:: 3. Instalar dependencias
+echo [3/3] Instalando dependencias (esto tarda 1-2 minutos la primera vez)...
+"%~dp0venv\Scripts\python.exe" -m pip install -r backend\requirements-dev.txt
+if errorlevel 1 (
+    echo ERROR durante pip install.
+    pause
+    exit /b 1
+)
+
+echo.
+echo  =====================================================
+echo   Instalación lista. Arranca con: start.bat
+echo  =====================================================
+pause