Palace Mail is fully healthy. Here's the summary:

**All features tested and passing:**

| Area | Status |
|---|---|
| Layout (header, owner tabs, account pills, split pane) | ✅ |
| All 6 IMAP inboxes (inbox + sent) | ✅ |
| Message detail (subject, from, date, body) | ✅ |
| Search API | ✅ |
| Attachment download | ✅ |
| Compose modal (opens, fields populated) | ✅ |
| Reply (pre-filled To + Re: subject) | ✅ |
| Forward (pre-filled Fwd: subject) | ✅ |
| Owner tab switching (Junwon ↔ Ace) | ✅ |
| Account pill switching | ✅ |
| Folder switching (Inbox / Sent) | ✅ |
| Swipe-to-archive / swipe-to-delete | ✅ |
| Pagination / load more | ✅ |
| Thread mode toggle | ✅ |

No fixes were needed. Everything is working correctly.