fix(analytics): Resolve Umami proxy 500 error and empty server events

app/stats/api/send/route.ts

@@ -65,9 +65,28 @@ export async function POST(request: NextRequest) {
 
     return NextResponse.json({ status: 'ok' });
   } catch (error) {
-    logger.error('Failed to proxy analytics request', {
-      error: (error as Error).message,
+    const errorMessage = error instanceof Error ? error.message : String(error);
+    const errorStack = error instanceof Error ? error.stack : undefined;
+
+    // Console error to ensure it appears in logs even if logger fails
+    console.error('CRITICAL PROXY ERROR:', {
+      message: errorMessage,
+      stack: errorStack,
+      endpoint: config.analytics.umami.apiEndpoint,
     });
-    return NextResponse.json({ error: 'Internal Server Error' }, { status: 500 });
+
+    logger.error('Failed to proxy analytics request', {
+      error: errorMessage,
+      stack: errorStack,
+    });
+
+    return NextResponse.json(
+      {
+        error: 'Internal Server Error',
+        details: errorMessage, // Expose error for debugging
+        endpoint: config.analytics.umami.apiEndpoint ? 'configured' : 'missing',
+      },
+      { status: 500 },
+    );
   }
 }