feat: add execution history queries and preserve bounded JSON payloads

internal/transport/httpserver/server.go

@@ -32,6 +32,7 @@ func New(addr string, ready Checker, tasks ...*service.Service) *http.Server {
 	})
 	if len(tasks) > 0 && tasks[0] != nil {
 		registerTasks(mux, tasks[0])
+		registerHistory(mux, tasks[0])
 	}
 	return &http.Server{Addr: addr, Handler: mux, ReadHeaderTimeout: 5 * time.Second, ReadTimeout: 10 * time.Second, WriteTimeout: 15 * time.Second, IdleTimeout: 60 * time.Second, MaxHeaderBytes: 16 << 10}
 }