fix(org-roam-config): save journal buffer after copying DONE task

`cj/org-roam-copy-todo-to-today' tried to save the target journal
buffer via `org-after-refile-insert-hook' bound to `#'save-buffer',
but that value is the wrong shape (single function instead of a
hook list), and the only other save mechanism -- the `:after' advice
on `org-refile' that calls `org-save-all-org-buffers' -- doesn't
attach until `:defer .5' elapses, so the very first DONE transition
after startup leaves the journal unsaved.

Drop the broken hook binding and save the target buffer explicitly
after the refile call. New ERT test asserts `buffer-modified-p' on
the journal buffer is nil after the function returns.

0 files changed, 0 insertions, 0 deletions