* fix(app): keep failed chat history until retry
Automatic retries repeatedly reopen provider sessions after persistent failures. Keep the error visible until the user retries, while retaining reconnect recovery.
* fix(app): catch up chats after subscription failure
A failed replacement subscription leaves chats unsubscribed, so discard its old catch-up state and fetch missed history after retry.
* fix(app): recover gaps during history retry
Keep gap recovery active while a user-initiated retry is running so the chat is not marked current before its follow-up fetch.
* fix(app): show history errors in archived chats
Cached archived chats need the same manual retry affordance when history synchronization fails.
Mohamed Boudra
385c29b655