Replace the per-account JSON snapshot with SwiftData @Model records
(ConversationRecord, MessageRecord, ArchiveMetadataRecord). The
in-memory
value types stay unchanged; ChatArchive now persists through a shared
ModelContainer filtered by accountJID. Legacy JSON is migrated once on
first load and then removed.
thread
- Replace O(n^2) origin-id/stanza-id lookups in AppModel with hash
indexes
and stop rebuilding the whole index on every unseen stanza-id, so
archive
application no longer grows quadratically with history size.
- Run OMEMO decryption on a serial background queue instead of the main
actor, and decrypt archived stanzas in small batches with a shorter
yield,
keeping the UI responsive during large archive catch-ups.
- Show the "Синхронизация истории…" banner only for the one-page
bootstrap
window; incremental backlog catch-up continues silently in the
background.
- Fix MUC-MAM: publish decoded group mutations at the end of room
catch-up;
they were previously accumulated and then silently dropped.
- Retry a failed catch-up pass automatically (bounded) and lengthen the
query/apply timeouts so a single slow page no longer leaves history
unloaded until the next app activation.