egutierrez
7ba18f9114
Two issues: 1. "Maximum update depth exceeded" inside Mantine's useMergedRef during drag. Root cause: the `data` object passed to dnd-kit's `useSortable` in KanbanCard and KanbanColumn was re-created on every render. Mantine Paper composes its internal ref with the consumer ref via useMergedRef, which uses a useCallback whose deps array contains the refs themselves. Whenever the underlying setNodeRef from useSortable became unstable (because dnd-kit's internal state churned on data identity change), the merged ref was reassigned each commit -> setState inside the ref callback -> next render -> new data identity -> loop. Wrap the sortable data in useMemo keyed on its real inputs. 2. Drag feels laggy. Each card listens to a 1-second `now` clock that re-renders the entire board to refresh the "time in column" label. Pause that interval while a drag is active so dnd-kit's per-pixel reconciliation does not also re-mount/re-layout every card every second. Tick resumes the moment the drag ends. Also move the Select `data` array for the column max-time popover from an inline expression to a module-level constant; same array identity across all column instances and renders -> Mantine Combobox stops re-running its diffing effect for free. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>