Initial commit: PDGA rating scraper and predictor

- Web scraping app for PDGA player ratings
- Current rating extraction from player pages
- Tournament round rating scraping for predictions
- Statistical rating prediction algorithm
- Interactive table with on-demand calculations
- Caching for performance optimization

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

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+# PDGA Ratings Scraper
+
+A web application that scrapes PDGA player ratings and displays them in a sorted table.
+
+## Setup
+
+1. Install dependencies:
+```bash
+npm install
+```
+
+2. Add PDGA numbers to `pdga-numbers.txt` (one per line)
+
+3. Start the server:
+```bash
+npm start
+```
+
+4. Open http://localhost:3000 in your browser
+
+## Usage
+
+- Edit `pdga-numbers.txt` to add/remove players
+- Click "Refresh Ratings" to scrape current ratings
+- Players are automatically sorted by rating (highest first)
+
+## Features
+
+- Web scraping of PDGA player ratings
+- Sortable table display
+- Easy player management via text file
+- Real-time rating updates