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

**All tests passed — no fixes needed.**

### What Was Tested

**Layout:**
- Header with logo, owner tabs (Junwon / Ace), compose button — present
- Account domain pills (manglasabang, palace.fund, palacering) — present
- Split layout (340px list pane + flex detail pane) — correct
- Email list, detail panel, compose overlay — all rendered correctly
- Mobile responsive at 680px breakpoint — correct

**API Endpoints (all 6 accounts):**
- `GET /api/mail/inbox` — 200, returns emails for all accounts
- `GET /api/mail/inbox` (Sent folder) — 200, works
- `GET /api/mail/message` — 200, full parsed email
- `GET /api/mail/search` — 200, search results
- `GET /api/mail/attachment` — 200, binary content
- `POST /api/mail/archive` / `delete` — correct behavior

**JavaScript Features:**
- Owner tab switching → reloads inbox
- Account pill switching → updates compose From
- Email row click → detail panel renders
- Compose new → pre-fills To with other owner's address
- Reply → pre-fills To, adds "Re:" prefix, quotes original
- Forward → clears To, adds "Fwd:" prefix
- Search → debounced 300ms
- Swipe to archive/delete → undo timer
- Attachments → download URLs correct