The task-event bus translates the backend's task.upsert SSE events into
window-level taskCreated / taskUpdated / taskCompleted CustomEvents. It
fired taskCompleted whenever a task's current status was terminal AND
the previously-known status was not — including the case where the bus
had never seen the task before at all (prevStatus undefined → wasTerminal
false → "transition" detected).
Why this misfired: the backend re-broadcasts the full task object on any
inode change to the task file, not just on logical status changes. The
periodic ownership/permission repair sweep (crontab_check_processor.sh)
chowns the entire tasks directory, which bumps ctime on every task file
and trips fs.watch, which broadcasts task.upsert for each one. If the
page was loaded after a task had already finished, the bus saw that
task for the first time as already terminal and fired a "task completed"
toast — for tasks that completed minutes or hours earlier.
Fix: when an upsert is for a task the bus has never seen AND that task
is already terminal, bootstrap silently. We have no evidence the task
transitioned now — it might have transitioned hours ago. The real
running→terminal transition (bus knew about the task while it was
running, then receives a terminal upsert) still notifies, which is what
users actually want to know about.
Signed-off-by: librelad <librelad@digitalangels.vip>