Update README.md with comprehensive documentation and module reference

[Copilot]

Overview

Transformed the README.md from a minimal 3-line placeholder into a comprehensive 385-line guide that thoroughly documents the library's purpose, features, and all available modules.

What Changed

Before: Simple placeholder with just a title and brief greeting

# ugc-widget-utils
Utilities to help you with building your next widget!

Enjoy!

After: Professional, comprehensive documentation covering the entire library

Key Additions

🎨 Engaging Introduction

• Professional header with NPM and license badges
• Clear tagline explaining the library as a "comprehensive TypeScript utility library for building powerful User-Generated Content (UGC) widgets"
• Feature highlights with visual emojis for easy scanning

📦 Installation & Quick Start

• Installation instructions for npm, yarn, and pnpm
• Four practical quick-start examples showing:
  • Basic widget setup with loadWidget()
  • JSX component creation
  • Handlebars template rendering
  • React hooks for infinite scrolling

📚 Complete Module Reference

Detailed documentation for all 13+ exported modules:

• Core modules: Main export, types, JSX runtime, Handlebars engine
• Utilities: CSS variables, components, widget features
• Extensions: Swiper carousel integration
• React hooks: useInfiniteScroller
• Events: Widget lifecycle and interaction events
• Embed: v2 and v3 widget embedding utilities

Each module includes:

• Clear description of its purpose
• Key exports and features
• How it fits into the overall architecture

🔧 Configuration & Examples

• Complete WidgetSettings interface with inline documentation
• Three practical examples:
  • Creating a gallery widget
  • Integrating Swiper carousel
  • Embedding widgets programmatically

🏗️ Project Structure

• Visual directory tree showing all source folders
• File descriptions explaining the purpose of each major component

🧪 Development Guide

• Commands for testing, building, linting, and type checking
• Contributing guidelines with clear expectations
• Links to NPM package, repository, and changelog

🎯 Use Cases

Real-world scenarios where the library excels:

• Social media galleries
• Product showcases with UGC
• Event coverage aggregation
• Community content walls
• Marketing campaign landing pages

Why This Matters

The original README didn't explain what the library does or how to use it. Developers would need to explore the source code to understand:

• What modules are available
• How to import and use different features
• What the library is designed for
• How to configure widgets

The new README provides all this information upfront, making it easy for developers to:

• Quickly understand the library's capabilities
• Find the right module for their needs
• Get started with practical examples
• Navigate the codebase effectively

Formatting

All content follows the project's prettier configuration for consistent code style in examples.

Original prompt

Update the README.md to be engaging and thoroughly explain the purpose of this repo's files.

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