Palace Mail self-heal complete. All features passed:

- Layout renders correctly — header, owner tabs (Junwon/Ace), account pills, split pane
- All 6 API endpoints responding correctly (inbox, message, search, archive, delete, attachment)
- Compose modal opens with correct fields and From dropdown
- Reply pre-fills To/Subject/quoted body; Forward works correctly
- Owner tab and account pill switching both reload the inbox
- Thread toggle, search, load-more, and pagination all functional

No bugs found, no fixes needed.