Palace Mail self-heal complete. Here's the summary:

**All systems passing.** No bugs found, no fixes needed.

**Tested:**
- 6 IMAP inboxes across all accounts (ace/junwon × manglasabang/palace.fund/palacering)
- Message detail API (subject, from, date, body, attachments)
- Search API
- Sent folder browsing
- Compose modal structure (To, Subject, Body, From dropdown with all 6 accounts)
- Reply/Forward pre-fill logic
- Owner tab switching (Junwon ↔ Ace)
- Account pill switching
- Swipe-to-archive and swipe-to-delete endpoints
- Push notification infrastructure
- Thread mode grouping logic

Palace Mail is fully operational.