feat: add cross-platform start.sh script and update package.json for macOS/Linux

Former-commit-id: 3888c91ab3

start.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+echo "======================================================="
+echo "   S H A D O W B R O K E R   -   macOS / Linux Start   "
+echo "======================================================="
+echo ""
+
+# Check for Node.js
+if ! command -v npm &> /dev/null; then
+    echo "[!] ERROR: npm is not installed. Please install Node.js (https://nodejs.org/)"
+    exit 1
+fi
+
+# Check for Python
+if ! command -v python3 &> /dev/null; then
+    echo "[!] ERROR: python3 is not installed. Please install Python 3.10+ (https://python.org/)"
+    exit 1
+fi
+
+echo "[*] Setting up Backend Environment..."
+cd backend
+if [ ! -d "venv" ]; then
+    echo "[*] Creating Python Virtual Environment..."
+    python3 -m venv venv
+fi
+
+echo "[*] Installing Backend dependencies..."
+if [[ "$OSTYPE" == "msys" || "$OSTYPE" == "cygwin" ]]; then
+    # In case someone runs this in Git Bash on Windows
+    source venv/Scripts/activate
+else
+    source venv/bin/activate
+fi
+pip install -r requirements.txt
+cd ..
+
+echo "[*] Setting up Frontend Environment..."
+cd frontend
+if [ ! -d "node_modules" ]; then
+    echo "[*] Installing Frontend dependencies..."
+    npm install
+fi
+
+echo ""
+echo "======================================================="
+echo "  🚀 Starting Services...                              "
+echo "  Dashboard will be available at: http://localhost:3000"
+echo "  Keep this window open! Note: Initial load takes ~10s "
+echo "======================================================="
+echo ""
+
+# Start both services (npm run dev automatically calls the python backend on Mac/Linux if scripts are configured cross-platform)
+npm run dev