Offline drafts work, just dont close the app.

There is a 300,000 sats #bounty for scheduled posts and hints on implementation from nostr:npub1fk8rya2ra7lp8m60f8jrjg4yqfv2cc8dah8wqc49drccs3dqngzqtgc5sk https://github.com/damus-io/damus/issues/1241