Hanbiro Mail

We've added a full Mail Settings suite and improved your everyday email experience:
- New settings — signatures, vacation auto-reply, spam filters, block/allow lists, forwarding, aliases, folder management & sharing, and external account setup (SMTP/POP3/IMAP)
- Better composing — insert images, improved attachments, cancel after send, and email validation
- Mailbox — select all emails for faster actions, plus a refreshed list and viewer
- Sign-in — more reliable Face ID / fingerprint login