chore(backend): log Host/Origin and status for request debugging

backend/src/app.ts

@@ -7,6 +7,25 @@ import racesRouter from "./routes/races";
 export function createApp(): express.Express {
   const app = express();
 
+  // TEMP: compare Host vs Origin for 200 vs 401 debugging — remove when done
+  app.use((req, res, next) => {
+    const host = req.headers.host;
+    const origin = req.headers.origin;
+    res.on("finish", () => {
+      console.log(
+        JSON.stringify({
+          tag: "temp-req-headers",
+          host,
+          origin: origin ?? null,
+          method: req.method,
+          path: req.originalUrl ?? req.url,
+          status: res.statusCode,
+        }),
+      );
+    });
+    next();
+  });
+
   app.use(
     cors({ origin: config.corsOrigin, methods: ["GET", "POST", "PATCH", "DELETE", "OPTIONS"] }),
   );