Batch state (running combo per node id, results per FlakeGenerate node id, progress) now lives in a per-workflow store in queue.js. Nodes read it when they render and after a workflow load; the overlay reads results through a getter and re-renders when one arrives. On websocket reconnect or when the tab becomes visible, finished prompts are backfilled from /history and the running one from /queue. Results are cleared at batch start.