backend requirements onthe xustomer app

main.go

@@ -167,6 +167,13 @@ func main() {
 		AllowMethods:     "GET,POST,PUT,DELETE,PATCH,OPTIONS",
 	}))
 
+	// Echo X-Request-Id on every response, errors included, minting one when the
+	// caller did not send it. The customer app funnels every failure into a
+	// single retryable error state, so without this a support conversation
+	// about "it failed" has nothing to correlate against the logs. Registered
+	// before the logger so the id is available to it.
+	app.Use(middlewares.RequestID())
+
 	// Structured Zap logger middleware
 	app.Use(middlewares.ZapLogger())