fix: avoid slice out of bounds index when server error body is <1024

Addresses the following panic:

  2026/01/21 17:07:16 INFO ping...
  panic: runtime error: slice bounds out of range [:1024] with capacity 512

  goroutine 1 [running]:
  main.ping(0xc000118e10, {0xc00001c017?, 0x9b69e0?}, {0xc00001e017, 0x4})
  	github.com/cofide/cofide-demos/workloads/ping-pong-mesh/ping-pong-mesh-client/main.go:72 +0x34c
  main.run(0xc00007c2e0)
  	github.com/cofide/cofide-demos/workloads/ping-pong-mesh/ping-pong-mesh-client/main.go:47 +0xcd
  main.main()
  	github.com/cofide/cofide-demos/workloads/ping-pong-mesh/ping-pong-mesh-client/main.go:15 +0x18

Author: markgoddard

workloads/ping-pong-cofide/ping-pong-cofide-client/main.go

@@ -129,7 +129,9 @@ func ping(client *cofidehttp.Client, serverAddr string, serverPort int) error {
 		return err
 	}
 	if r.StatusCode != http.StatusOK {
-		return fmt.Errorf("unexpected status code: %d: %s", r.StatusCode, body[:1024])
+		// Limit how much of the response we include in the error
+		body = body[:min(len(body), 1024)]
+		return fmt.Errorf("unexpected status code: %d: %s", r.StatusCode, body)
 	}
 	slog.Info(string(body))
 	return nil

workloads/ping-pong-mesh/ping-pong-mesh-client/main.go

@@ -69,7 +69,9 @@ func ping(client *http.Client, serverAddr, serverPort string) error {
 		return err
 	}
 	if r.StatusCode != http.StatusOK {
-		return fmt.Errorf("unexpected status code: %d: %s", r.StatusCode, body[:1024])
+		// Limit how much of the response we include in the error
+		body = body[:min(len(body), 1024)]
+		return fmt.Errorf("unexpected status code: %d: %s", r.StatusCode, body)
 	}
 	slog.Info(string(body))
 	return nil

workloads/ping-pong/ping-pong-client/main.go

@@ -218,7 +218,9 @@ func ping(client *http.Client, serverAddr string, serverPort int) error {
 		return err
 	}
 	if r.StatusCode != http.StatusOK {
-		return fmt.Errorf("unexpected status code: %d: %s", r.StatusCode, body[:1024])
+		// Limit how much of the response we include in the error
+		body = body[:min(len(body), 1024)]
+		return fmt.Errorf("unexpected status code: %d: %s", r.StatusCode, body)
 	}
 	slog.Info(string(body))
 	return nil