Palace Mail passed all checks. Full audit summary:

**Layout:** All elements present — owner tabs (Junwon/Ace), account pills, split list/detail pane, compose button, mobile responsive behavior.

**APIs:** All 18 endpoints tested — inbox (all 6 accounts), message detail, search, sent folders, attachments, delete/archive error handling.

**Functionality:**
- Inbox loading for all accounts ✓
- Owner tab switching ✓  
- Account/folder pill switching ✓
- Email open → detail panel with subject/from/to/date/body ✓
- HTML emails in shadow DOM, plain text in `<pre>` ✓
- Attachments as download chips ✓
- Compose modal opens with correct fields ✓
- Reply pre-fills To + "Re:" subject ✓
- Forward pre-fills "Fwd:" subject ✓
- Search (inbox + sent) ✓
- Thread grouping, swipe gestures, pagination ✓

No issues found. No fixes needed.