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CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is a Python automation script that downloads Amazon order invoices in bulk using Selenium WebDriver. It reads order IDs from [orders.txt](orders.txt) and automates the process of navigating to invoice pages and triggering the print dialog for each order.
+
+## Dependencies
+
+- Python 3.x with `selenium` package
+- Chrome browser with ChromeDriver
+- Virtual environment in `venv/` directory
+
+## Running the Script
+
+1. Activate the virtual environment:
+   - Windows: `venv\Scripts\activate`
+   - Unix/macOS: `source venv/bin/activate`
+
+2. Run the script:
+   ```
+   python invoices.py
+   ```
+
+3. When prompted, manually log into Amazon in the browser window, then press Enter in the terminal to continue
+
+4. The script will iterate through each order ID in [orders.txt](orders.txt) and open the print dialog for the invoice
+
+## Input Format
+
+[orders.txt](orders.txt) should contain one Amazon order ID per line (format: `XXX-XXXXXXX-XXXXXXX`)
+
+## Architecture Notes
+
+- The script uses direct URL construction to access invoice print pages: `https://www.amazon.com/gp/css/summary/print.html?orderID={order}`
+- Manual authentication is required due to Amazon's login protections
+- 3-second delay between orders to avoid rate limiting
+- Print dialog is triggered via JavaScript (`window.print()`) - user must manually save each PDF