Carson 4.4.0

New

• Auto-chdir on checkout from inside worktree. carson checkout no longer blocks when the current working directory is inside the worktree being removed. Carson Dir.chdirs to the main worktree root and completes the removal automatically. Both the warehouse (assess_removal) and legacy (remove_check) paths are fixed.
• Parent shell excluded from held-by-other-process check. held_by_other_process? now excludes Process.ppid (the user's shell that launched Carson) in addition to Process.pid. Prevents false blocks when the user runs carson checkout from inside the worktree.

Why

Running carson checkout from inside the target worktree is the most natural invocation — agents and users are already there. Blocking and printing a recovery command added friction for no safety benefit, since Carson can move its own process out.