Add Chrome Extension Version of Wordle Solver

[Copilot]

This PR adds a complete Chrome extension version of the Wordle Solver that integrates directly into Wordle game pages, providing real-time optimal word suggestions while users play.

🎯 What's New

The Chrome extension brings the same powerful information theory-based solving algorithm from the web application directly into any Wordle game page. Users can now get optimal word suggestions without switching between tabs or manually entering their guesses.

🚀 Key Features

• Smart Game Detection: Automatically activates on popular Wordle sites (NY Times, Wordle Unlimited, etc.)
• Real-time Integration: Tracks game state and updates suggestions as you play
• Non-intrusive UI: Clean overlay that doesn't interfere with gameplay
• Universal Compatibility: Works across different Wordle implementations
• Information Theory Algorithm: Same entropy-based optimization as the web app

📁 Extension Structure

chrome-extension/
├── manifest.json          # Extension configuration (Manifest V3)
├── content-script.js      # Main integration logic
├── solver-algorithm.js    # Core Wordle solving algorithm
├── extension-styles.css   # UI styling with dark mode support
├── popup.html/js          # Extension popup interface
├── demo.html             # Test page for development
└── icons/                # Extension icons

🔧 Technical Implementation

The extension uses a content script that:

1. Detects Wordle games by looking for common DOM patterns and URL indicators
2. Parses game state from the board tiles and their color states
3. Provides suggestions using the same entropy calculation algorithm
4. Updates in real-time as users make guesses

The solver algorithm has been extracted and adapted from the main application, maintaining the same high-quality word suggestions based on 3Blue1Brown's information theory approach.

📱 How to Use

1. Load the extension in Chrome Developer Mode
2. Visit any Wordle game site
3. The solver appears automatically as a sidebar
4. Play normally and follow the AI suggestions

🎮 Demo

The demo page shows the extension interface with:

• Target words (🎯) - possible correct answers
• Explore words (🔍) - best for gathering information
• Entropy scores - information value rankings
• Hard mode toggle and other settings

🔒 Privacy & Security

• No data collection or external transmission
• Works entirely within the browser
• Only activates on Wordle game pages
• No account or permissions required beyond basic tab access

This extension makes the Wordle Solver accessible to users who prefer to play on the official sites while still getting optimal solving assistance.

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