Improve setup script robustness and add Windows installer

requirements.bat

@@ -0,0 +1,10 @@
+@echo off
+REM Transformers Examples dependency installer for Windows
+
+IF NOT DEFINED VIRTUAL_ENV (
+    echo Warning: No virtual environment detected. Consider creating one before installing dependencies.
+)
+
+python -m pip install --upgrade pip
+python -m pip install -r requirements.txt
+

setup.sh

@@ -1,4 +1,8 @@
 #!/bin/bash
+set -euo pipefail
+
+trap 'echo "❌ An unexpected error occurred. Exiting setup." >&2' ERR
+trap 'echo "⚠️ Setup interrupted." >&2' INT TERM
 
 # Transformers Examples Setup Script
 set -e
@@ -60,26 +64,36 @@ esac
 
 echo "🚀 Setting up Transformers Examples repository..."
 
+# Suggest Windows alternative if running in Windows-like environment
+if [[ "${OSTYPE:-}" == msys* || "${OSTYPE:-}" == cygwin* || "${OSTYPE:-}" == win32* ]]; then
+    echo "ℹ️  Windows users can run requirements.bat or adapt the steps in a PowerShell script."
+fi
+
 # Check if Python is installed
 if ! command -v python3 &> /dev/null; then
     echo "❌ Python 3 is not installed. Please install Python 3.7+ first."
     exit 1
 fi
 
-echo "✅ Python 3 found: $(python3 --version)"
+python_version="$(python3 --version)"
+echo "✅ Python 3 found: ${python_version}"
 
 # Create virtual environment (optional but recommended)
-if $create_venv; then
+if [[ "${1:-}" == "--venv" ]]; then
     echo "📦 Creating virtual environment..."
     python3 -m venv venv
-    # shellcheck disable=SC1091
+    # shellcheck source=/dev/null
     source venv/bin/activate
     echo "✅ Virtual environment activated"
 fi
 
 # Install requirements
-echo "📥 Installing dependencies for profile: $profile"
-pip install -r requirements.txt
+echo "📥 Installing dependencies..."
+if [[ -z "${VIRTUAL_ENV:-}" ]]; then
+    echo "⚠️  Warning: No active virtual environment detected. Consider running with --venv or activating one manually."
+fi
+python3 -m pip install --upgrade pip
+python3 -m pip install -r requirements.txt
 
 if [[ "$profile" == "jax" || "$profile" == "all" ]]; then
     echo "➕ Installing JAX ecosystem dependencies..."
@@ -92,7 +106,7 @@ if [[ "$profile" == "dev" || "$profile" == "all" ]]; then
 fi
 
 # Check if .env file exists
-if [ ! -f ".env" ]; then
+if [[ ! -f ".env" ]]; then
     echo "⚙️  Creating .env file from template..."
     cp .env.example .env
     echo "📝 Please edit .env file and add your Hugging Face token"
@@ -109,6 +123,7 @@ echo "   - Genel-1/ for basic transformer examples"
 echo "   - Genel-2/ for vision transformers"
 echo "   - 'Multi Modal'/ for multimodal examples"
 echo "   - llama/ for LLaMA implementation"
-echo "3. Run: python test-time-scaling.py for a quick test"
+echo "3. Run: python3 test-time-scaling.py for a quick test"
 echo ""
 echo "📚 Check README.md for detailed usage instructions"
+