Pokemon Stock Monitor - Initial commit

Chrome extension for PokemonCenter monitoring with Discord notifications.
Includes Python scripts for Target monitoring.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

chrome-extension/README.md

@@ -0,0 +1,68 @@
+# Pokemon Stock Monitor - Chrome Extension
+
+A Chrome extension that monitors PokemonCenter for stock changes and sends Discord notifications.
+
+## Why a Chrome Extension?
+
+PokemonCenter uses Imperva bot protection that blocks automated browsers (Playwright, Selenium). This extension runs **inside your real Chrome browser**, making it undetectable - to the website, it looks exactly like you browsing manually.
+
+## Installation
+
+1. **Add Icons** (optional but recommended):
+   - Create or download three PNG icons: `icon16.png`, `icon48.png`, `icon128.png`
+   - Place them in this folder
+   - You can use any Pokemon-themed icons or simple colored squares
+
+2. **Load the Extension**:
+   - Open Chrome and go to `chrome://extensions`
+   - Enable "Developer mode" (toggle in top right)
+   - Click "Load unpacked"
+   - Select this `chrome-extension` folder
+   - The extension icon should appear in your toolbar
+
+3. **Configure**:
+   - Click the extension icon
+   - Paste your Discord webhook URL
+   - Add URLs to monitor (default is PokemonCenter TCG)
+   - Set check interval (1-60 minutes)
+   - Click "Save Settings"
+
+## How It Works
+
+1. **Background Service Worker**: Runs continuously in Chrome
+2. **Periodic Checks**: Uses Chrome's alarm API to check at your interval
+3. **Product Parsing**: Fetches pages and parses product data from HTML
+4. **Change Detection**: Compares against known products to detect:
+   - New product listings
+   - Restocks (was out of stock, now in stock)
+5. **Discord Notifications**: Sends rich embeds with product info and direct links
+
+## Features
+
+- **Keyword Filtering**: Only track products matching specific keywords
+- **New Product Alerts**: Get notified when new items appear
+- **Restock Alerts**: Get notified when out-of-stock items return
+- **Browser Notifications**: Local notifications in addition to Discord
+- **Persistent Storage**: Remembers products across browser restarts
+
+## Tips
+
+- **Keep Chrome Running**: The extension only works while Chrome is open
+- **First Run**: After installing, click "Check Now" to do an initial scan
+- **Clear History**: Use this if you want to re-detect all products as "new"
+- **Multiple URLs**: Add one URL per line in the URLs field
+
+## Troubleshooting
+
+**No notifications sending:**
+- Check that your Discord webhook URL is correct
+- Make sure "Monitor Enabled" is toggled on
+- Check Chrome's console for errors (right-click extension → Inspect popup)
+
+**Extension not loading:**
+- Make sure manifest.json is valid JSON
+- Check for any icon files referenced but missing
+
+**Products not detected:**
+- PokemonCenter may have changed their HTML structure
+- Check the browser console for parsing errors