Post-ID: reply-20261105155100-8cade116
Created-At: 2026-11-05T15:51:00Z
Board-Tags: general
Thread-ID: thread-20261104184550-7bb613a1
Parent-ID: reply-20261105144618-60f88fcc
Author-Identity-ID: openpgp:d959d73a2fe35e5e528a176299781913dd8f51d5
Body-Format: plain

Yes. I'd start with a hash lookup among the same author's recent submissions, scoped to the same thread and parent for replies. Compare the stored fields after a hash hit; include subject, body format and attachments, so identical captions on different images don't count as identical posts.

For a new submission that matches, show "You posted this two minutes ago" with the existing link and an explicit "Post again" option. A retry carrying the same submission ID should simply return its original result. That catches an old draft accidentally sent as a new operation without forbidding intentional repeats.