Fix API URLs to use relative paths for production

frontend/src/App.jsx

@@ -16,7 +16,7 @@ function App() {
       }
       // Note: File upload would need FormData, keeping it simple JSON for text for now
 
-      const response = await fetch('http://localhost:8000/api/analyze/', {
+      const response = await fetch('/api/analyze/', {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',

frontend/src/components/Results.jsx

@@ -26,7 +26,7 @@ const Results = ({ result, onReset }) => {
             // Or update backend to echo back the text? 
             // Let's update App.jsx to attach `originalText` to the result object.
 
-            const response = await fetch('http://localhost:8000/api/report/', {
+            const response = await fetch('/api/report/', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({