The dispatch timestamp survived the deletion, so removing a message in Slack
left the digest permanently swallowed. Deleting now rewinds the window to the
newest digest that still stands.
The window now starts at the last dispatch, so pressing send twice does not
repeat a digest. Cards prefer entries that have a cover, the newest one of
them opens the message as a full width image, and the page says when the
last digest went out.
Incoming webhooks return no message id, so nothing can be removed later.
Settings now take a bot token plus channel, chat.postMessage records channel
and timestamp on the run, and the history carries a delete button per
message. The webhook stays as a fallback and is marked as not deletable.
New settings area: the webhook lives in the database and is only shown
shortened afterwards, the environment variable stays as a fallback. A switch
decides whether internal entries travel, a button sends the digest right
away, and every run is recorded with period, count, projects, result and
who triggered it.
Matthias G