Close worktree

Land the current worktree's feature branch onto develop, then delete the worktree and local branch. Run this from the worktree you want to close.

Default integration branch: develop. If the user names another base (main, etc.), use that instead.

This is not finish-work. Finish-work only checks and commits in the current tree. Close-worktree owns the worktree lifecycle and calls finish-work when the tree is dirty.

Never cd between worktrees — use git -C <path> so each command clearly targets one worktree.

Checklist