// manifest.json 
{
  "name": "Coffee Break Helper",
  "version": "1.0",
  "permissions": ["activeTab"],
  "background": {
    "scripts": ["background.js"]
  }
}

// background.js
chrome.webNavigation.onCompleted.addListener(function(details) {
  if (details.url.includes("github.com")) {
    chrome.tabs.executeScript(details.tabId, {
      code: 'alert("☕ Your code is great! But you need coffee. Take a break.")'
    });
  }
});

// manifest.json 
{
  "name": "Coffee Break Helper",
  "version": "1.0",
  "permissions": ["activeTab"],
  "background": {
    "scripts": ["background.js"]
  }
}

// background.js
chrome.webNavigation.onCompleted.addListener(function(details) {
  if (details.url.includes("github.com")) {
    chrome.tabs.executeScript(details.tabId, {
      code: 'alert("☕ Your code is great! But you need coffee. Take a break.")'
    });
  }
});