Add Lifetime Earnings FAQ

Explain the landing-page Lifetime Earnings metric and link to its detailed methodology. Keep the structured FAQ metadata aligned with the visible content.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

Author: murderteeth

app/page.tsx

@@ -55,6 +55,14 @@ const faqJsonLd = {
         '@type': 'Answer',
         text: 'Yes. Yearn has documentation for developers building on top of the protocol at https://docs.yearn.fi.'
       }
+    },
+    {
+      '@type': 'Question',
+      name: 'What are Yearn Lifetime Earnings?',
+      acceptedAnswer: {
+        '@type': 'Answer',
+        text: 'Lifetime Earnings measures the cumulative gross profit and loss reported by Yearn vault strategies in USD. Learn how it is calculated at https://docs.yearn.fi/developers/data-services/yearn-data/metrics/lifetime-earnings.'
+      }
     }
   ]
 }

src/components/pages/landing/components/sections/FAQs.tsx

@@ -78,6 +78,22 @@ const faqData = [
         {'to learn more.'}
       </p>
     )
+  },
+  {
+    title: 'What are Yearn Lifetime Earnings?',
+    content: (
+      <p>
+        {'Lifetime Earnings measures the cumulative gross profit and loss reported by Yearn vault strategies in USD. '}
+        <a
+          href={'https://docs.yearn.fi/developers/data-services/yearn-data/metrics/lifetime-earnings'}
+          target={'_blank'}
+          rel={'noopener noreferrer'}
+          className={'text-blue-400 underline'}
+        >
+          {'Learn how it is calculated.'}
+        </a>
+      </p>
+    )
   }
 ]