Buffer migration keyed off the active buffer's repo, so a switch made from
an unrelated buffer moved nothing and said nothing.
- Match each buffer against the target's own worktree list, longest root first.
- Warn when open buffers all live outside the repository.
- Capture and restore the cursor per window, not once from the first one.
- Clamp restored cursors to a line the destination buffer has.
Signed-off-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent
b15c8b49d3