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‎.github/workflows/ci.yml‎

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name: CI Pipeline
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on:
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push:
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branches: [ main, master, develop ]
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pull_request:
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branches: [ main, master, develop ]
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jobs:
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build-and-test:
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runs-on: ubuntu-latest
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strategy:
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matrix:
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node-version: [18.x, 20.x]
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Setup Node.js ${{ matrix.node-version }}
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uses: actions/setup-node@v4
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with:
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node-version: ${{ matrix.node-version }}
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cache: 'npm'
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- name: Install dependencies
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run: npm install
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- name: Verify server file exists
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run: |
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if [ ! -f server.js ]; then
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echo "Error: server.js not found"
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exit 1
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fi
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echo "✓ server.js found"
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- name: Verify HTML file exists
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run: |
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if [ ! -f index.html ]; then
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echo "Error: index.html not found"
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exit 1
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fi
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echo "✓ index.html found"
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- name: Check JavaScript syntax
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run: node -c server.js
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- name: Start server in background
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run: |
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node server.js &
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SERVER_PID=$!
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echo "SERVER_PID=$SERVER_PID" >> $GITHUB_ENV
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sleep 3
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- name: Test server is running
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run: |
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response=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:3000)
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if [ "$response" -eq 200 ]; then
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echo "✓ Server is running and responding with status 200"
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else
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echo "✗ Server responded with status $response"
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exit 1
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fi
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- name: Test HTML content is served
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run: |
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content=$(curl -s http://localhost:3000)
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if echo "$content" | grep -q "Calculator"; then
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echo "✓ Calculator HTML is being served correctly"
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else
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echo "✗ Calculator HTML not found in response"
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exit 1
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fi
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- name: Stop server
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if: always()
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run: |
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if [ ! -z "$SERVER_PID" ]; then
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kill $SERVER_PID || true
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fi
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pkill -f "node server.js" || true
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lint:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Setup Node.js
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uses: actions/setup-node@v4
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with:
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node-version: '20.x'
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- name: Validate HTML
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run: |
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echo "Checking HTML structure..."
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if grep -q "<!DOCTYPE html>" index.html; then
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echo "✓ Valid HTML5 doctype found"
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else
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echo "✗ HTML5 doctype missing"
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exit 1
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fi
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- name: Check for required HTML elements
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run: |
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required_elements=("calculator" "display" "buttons")
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for element in "${required_elements[@]}"; do
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if grep -q "$element" index.html; then
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echo "✓ Found: $element"
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else
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echo "✗ Missing: $element"
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exit 1
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fi
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done
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- name: Validate package.json
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run: |
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if [ -f package.json ]; then
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node -e "JSON.parse(require('fs').readFileSync('package.json', 'utf8'))"
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echo "✓ package.json is valid JSON"
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else
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echo "✗ package.json not found"
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exit 1
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fi

‎.gitignore‎

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# Node modules
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node_modules/
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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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*.lcov
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# nyc test coverage
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.nyc_output
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# Dependency directories
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jspm_packages/
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variables file
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.env
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.env.test
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.env.local
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# IDE
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.vscode/
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.idea/
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*.swp
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*.swo
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*~
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# OS
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.DS_Store
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Thumbs.db

‎README.md‎

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# Simple Calculator
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A simple, interactive calculator web application with a modern UI.
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## Features
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- ✨ Basic arithmetic operations: Addition, Subtraction, Multiplication, Division
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- 🎨 Modern gradient UI with smooth animations
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- ⌨️ Keyboard support for quick calculations
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- 🛡️ Error handling (e.g., division by zero)
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- 📱 Responsive design
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## Quick Start
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### Prerequisites
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- Node.js (v18 or higher)
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### Installation & Running
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1. Clone the repository
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```bash
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git clone <your-repo-url>
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cd windsurf-project
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```
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2. Start the server
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```bash
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node server.js
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```
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3. Open your browser and visit
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```
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http://localhost:3000
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```
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## Usage
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### Mouse Controls
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Click the calculator buttons to perform operations.
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### Keyboard Shortcuts
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- **Numbers (0-9)**: Input numbers
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- **Operators (+, -, *, /)**: Perform operations
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- **Enter or =**: Calculate result
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- **Escape**: Clear all (AC)
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- **Backspace**: Delete last digit
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## Project Structure
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```
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windsurf-project/
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├── .github/
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│ └── workflows/
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│ └── ci.yml # GitHub Actions CI pipeline
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├── index.html # Calculator UI
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├── server.js # Node.js server
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├── package.json # Project configuration
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└── README.md # This file
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```
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## CI/CD Pipeline
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This project includes a GitHub Actions CI pipeline that:
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### Build & Test Job
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- ✅ Tests on Node.js 18.x and 20.x
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- ✅ Verifies all required files exist
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- ✅ Checks JavaScript syntax
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- ✅ Starts the server and validates it's running
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- ✅ Tests HTTP responses
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- ✅ Verifies HTML content is served correctly
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### Lint Job
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- ✅ Validates HTML5 structure
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- ✅ Checks for required HTML elements
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- ✅ Validates package.json format
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The pipeline runs automatically on:
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- Push to `main`, `master`, or `develop` branches
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- Pull requests to these branches
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## Development
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To run the project locally:
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```bash
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npm start
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```
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To stop the server:
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```bash
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# Press Ctrl+C in the terminal
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# Or kill the process
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pkill -f "node server.js"
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```
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## License
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ISC

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