feat(ui): add RSVP attendance option and admin features

* Implement attendance selection in RSVP form
* Add admin endpoints for managing RSVPs and guests
* Update RSVP handling to include attendance status

server/cli.go

@@ -69,7 +69,11 @@ func runRSVPCLI(st *store.Store, args []string) int {
 					names[i] += " (child)"
 				}
 			}
-			fmt.Printf("#%d  %s  %s\n", r.ID, r.CreatedAt.Local().Format("2006-01-02 15:04"), strings.Join(names, ", "))
+			state := "attending"
+			if !r.Attending {
+				state = "NOT attending"
+			}
+			fmt.Printf("#%d  %s  [%s]  %s\n", r.ID, r.CreatedAt.Local().Format("2006-01-02 15:04"), state, strings.Join(names, ", "))
 			if r.Message != "" {
 				fmt.Printf("     message: %s\n", r.Message)
 			}