selectFolder() kicked off its background syncFolder() fetch fire-and-forget
with no loading flag, so opening a per-account folder with no cached
messages yet flashed "No messages to display" for the whole IMAP fetch
instead of a spinner. Adds isSyncingFolder, a StateFlow set for the
duration of that sync (mirroring isRefreshing) and cleared via try/finally
regardless of outcome. A private latestFolderSelection token guards the
clear so a stale sync from a folder no longer selected can't hide the
spinner for whichever folder is actually selected now.
MailboxScreen's non-paged empty branch now holds NoMessagesState back
while isSyncingFolder is true, showing a CircularProgressIndicator
instead — mirroring how the unified-inbox paged branch already gates on
loadState.refresh.
Closes#149
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
github-actions[bot]
JMR-devandClaude Opus 4.8