Enable text AND advanced search in all Unified Mailbox views (the per-role
mailboxes and the folder-selected All mail / Unread / Starred cross views). The
search input was hard-disabled for every unified view; the store fan-out already
supported text search.
- page.tsx: the search text input and the advanced-filter toggle are enabled for
all unified views (only the scheduled view stays disabled). Clear-search also
restores a cross view (not just per-role).
- Advanced filters now apply in cross views too: new advancedSearchCrossViewEmails
ANDs the advanced filter (text + field conditions from buildJMAPFilter, built
without an inMailbox clause) onto the cross-view membership. Per-role unified
views keep using advancedSearchUnifiedEmails. Both honor the filter on the first
page, on load-more, and on the folder-switch re-run. Fixes: an active Starred
filter not applying after switching into a cross view, and the Unread filter in
the Unread view returning nothing.
- Search persistence on folder switch: an active search is kept and re-run in the
target view, preserving advanced filters. handleMailboxSelect picks
advancedSearch when filters are set (normal, per-role unified, and cross views,
after setting the unified state), text searchEmails when only a query is set,
and browses otherwise. The scheduled view is the only view that resets the
search on enter (unavailable there; setScheduledView clears searchQuery +
searchFilters).
Account scope is intentionally left unrestricted in search (it already fanned out
across all accounts); the per-view folder selection still applies via
crossIncludedMailboxIds.