Palace Mail self-healing test complete. All features passed with no bugs found:

**Tested:**
- Layout: header, owner tabs (Junwon/Ace), account pills (manglasabang, palace.fund, palacering), split layout, compose button
- API endpoints: `/api/mail/inbox` (all 6 accounts + Sent), `/api/mail/search`, `/api/mail/message`, `/api/mail/attachment`, push subscription
- UI interactions: owner tab switching, account pill switching, thread mode toggle, reply/forward pre-fill, search, swipe-to-delete/archive, pagination

No fixes were needed.