pastilhasandClaude Opus 4.8
58373c9d59
Hybrid grouping via a new thread_id column: new mail threads exactly on References/In-Reply-To (id is sha1(Message-Id), so a referenced id hashes to the ancestor's own id); already-synced mail is backfilled with a normalized-subject + counterpart key. Folder views collapse to one row per thread with a count badge; the reader shows the thread as a collapsible stack. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>