Fix Page Content Not Being Passed to LLM When useContext=true

[007DXR]

Fix Page Content Not Being Passed to LLM When useContext=true

🐛 Issue Description

When useContext = true, the browser extension is unable to access the current page content, and the LLM responds with "I cannot directly access or display webpage content."

🔍 Root Cause

1. Page Content Not Added to Chat History: Although the fetchPageContents() function retrieves page content, it is never added to chatHistory.
2. Timing Issue with window.onload: The original code uses window.onload, which may not trigger in certain cases, causing fetchPageContents() not to be called.

✅ Solution

1. Add Page Context Storage

let pageContext = ""; // Store the page context

2. Add Page Content to Chat History

// Store the page context
pageContext = msg.contents;

// Add page context to chat history as a system message
if (pageContext && chatHistory.length === 0) {
  chatHistory.push({
    role: "system",
    content: `You are a helpful assistant. Here is the content of the current webpage the user is viewing:\n\n${pageContext}\n\nPlease answer questions about this webpage based on the content provided above.`
  });
}

3. Improve Page Load Detection

// Use DOMContentLoaded instead of window.onload
if (document.readyState === 'loading') {
  document.addEventListener('DOMContentLoaded', function() {
    if (useContext) {
      fetchPageContents();
    }
  });
} else {
  // Document already loaded, call immediately
  if (useContext) {
    fetchPageContents();
  }
}