An archive renamed the file on disk and stopped there, leaving an
uncommitted deletion of a tracked file — exactly what sync._clean()
refuses to run over, so one drag onto the tray stalled every later board
commit, kept the archive off the other boards, and left the card in a
single working tree. Appended agent reports had the same gap.
taskfiles now has one door out of a stage directory, _relocate(): it
registers the expectation, writes, moves, and commits under the same
COMMIT_MOVES gate a move uses — so archive, unarchive and move all commit
by construction rather than by each caller remembering. The messages read
like the others (`board: <n> -> archived (<name>)`, and the stage slug on
the way back) and carry the `board: ` prefix sync's piggyback guard
requires; routing through _commit means state.task_committed() fires, so
the event-driven push publishes it.
The second door is append_to_task(), which writes into a card where it
stands and commits via commit_edit(); agents._file_report() uses it
instead of touching config.TASKS itself, so a run's closing report is
recorded rather than left modified.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>