[Template: Kanban board] [Intent] A Trello-like Kanban single page. [Layout]
- Top filter bar (assignee / label / search)
- 4 columns: To do / In progress / In review / Done
- Cards contain: title / labels / due / avatar / comment count
- Optional swimlanes (grouped by epic / assignee) [Design details]
- No real drag needed, but it should look draggable