rollcall ipam sync: print the device report

The previous commit's message promised this; the edit had not applied.

Refs #10

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

cmd/rollcall/netapi.go

@@ -908,6 +908,20 @@ func (c *client) ipamCmd(sub string, args []string) error {
 		if rep.Error != "" {
 			fmt.Println("error:", rep.Error)
 		}
+		if d := rep.Devices; d != nil {
+			for _, x := range []struct {
+				k string
+				v []string
+			}{{"created", d.Created}, {"updated", d.Updated}, {"deleted", d.Deleted}, {"conflict", d.Conflicts}} {
+				for _, n := range x.v {
+					fmt.Printf("%-9s device %s\n", x.k, n)
+				}
+			}
+			fmt.Printf("devices: %d created, %d updated, %d deleted, %d conflicts\n", len(d.Created), len(d.Updated), len(d.Deleted), len(d.Conflicts))
+			if d.Error != "" {
+				fmt.Println("error:", d.Error)
+			}
+		}
 	}
 	switch sub {
 	case "", "status":