Kanban View

[i3130002]

I've been using https://github.com/cline/kanban and it has a good idea but lacks everywhere else.

I was wondering about having a Kanban view, it would make it easier to track tasks(Threads) of a project, let things run after each other while keeping the context clean, managing and ease parallel work.

This seems like a nice plan to do this too:

1. Add optional task metadata to threads.
2. Implement t3 task CLI with JSON output.
3. Let agents infer the current task from their worktree/CWD.
4. Add a short task-management skill.
6. Then add a simple project board.