Summary: GitClear adds code summarization feature

Why It Matters: This change highlights a new way GitClear helps users understand code.

What Changed:

• A new sentence was added at the top: "GitClear summarizes your code, teasing out the fraction of work that has a meaningful impact on the code base."
• The sentence "Interested in learning more about AI-generated code? I recommend reading the entire GitClear report." was removed.