- Add ResizablePanel component (components/ui/ResizablePanel.tsx) with
drag-to-resize via mouse events, no external dependencies
- Replace fixed-width columns in Mail.tsx with ResizablePanel for all
three panes (folder tree, mail list, mail detail)
- Remove account-select toolbar item from Mail.tsx; account selection
is now integrated into the folder tree
- Restructure MailFolderTree to show mail accounts as top-level nodes
with folders nested underneath, built from flat list via parent_id
- Add expand/collapse chevrons for accounts and folders with children
- Load folders for ALL accounts (not just selected one) so multi-account
tree works
- Derive selectedAccountId from selected folder instead of separate
account selector
- Add Mail tab to CRM Settings page (Settings.tsx) with 📧 icon
- Add /settings/mail route pointing to MailSettingsPage
- Update settings link in mail toolbar to point to /settings/mail
- Update no-accounts empty state link to /settings/mail
Agent Zero
0409a08002