Fix consent API: handle empty/invalid JSON body gracefully

src/pages/api/consent/index.ts

@@ -1,7 +1,16 @@
 import type { APIRoute } from 'astro';
 
 export const POST: APIRoute = async ({ request }) => {
-  const consentData = await request.json();
+  let consentData = {};
+  
+  try {
+    const text = await request.text();
+    if (text) {
+      consentData = JSON.parse(text);
+    }
+  } catch (e) {
+    console.error('[Consent API] JSON parse error:', e);
+  }
   
   const record = {
     id: crypto.randomUUID(),