Logs and evidence

interface NodeExecution {
  nodeId: string;
  status: "idle" | "waiting" | "running" | "successful" | "failed" | "skipped" | "cancelled";
  startedAt?: string;
  completedAt?: string;
  durationMs?: number;
  input: unknown;
  output: unknown;
  logs: string[];
  retryCount: number;
  error?: { code: string; message: string; detail?: string; suggestion?: string };
  skipReason?: string;
  branchFollowed?: string;
  browserDiagnostics?: BrowserDiagnostics;
  inputItems: WorkflowItem[];
  outputItems: WorkflowItem[];
  collection?: CollectionEvidence;
}