Kanban Board

The board has three fixed columns — To Do, In Progress, Done — and new cards are added by typing into a column's input and pressing Enter or clicking Add. There's no drag-and-drop; cards move between columns via the ← and → buttons, which splice the card out of one column's array and push it into the next. Every add, move, or delete immediately calls save(), which writes the whole board as JSON to localStorage under the key toolbox-kanban-board.

It's suited to a lightweight personal to-do board — tracking a handful of tasks through a simple pipeline — for someone who wants a kanban view without creating an account or installing project-management software.

localStorage is scoped to the specific browser and device you're using, so your board won't appear on a different browser, a different machine, or in an incognito window — there's no account or sync involved. If the saved JSON ever gets corrupted, the code catches the parse error quietly and falls back to an empty board rather than crashing.