**Palace Mail self-heal complete.** Here's what happened:

### Tests Passed
- All 6 inbox accounts loaded correctly (Junwon + Ace across manglasabang, palace.fund, palacering)
- API endpoints working: inbox, search, message detail, attachments, archive, delete
- Layout correct: owner tabs, account pills, split pane, compose sheet

### Bugs Fixed
1. **Thread badge clipped** — Thread count badge was nested inside a `row-from` span with `overflow:hidden`, causing it to be invisible when sender names were long. Fixed by making the badge a sibling element.
2. **Refresh bypassed thread grouping** — `refreshInbox()` always added new emails as individual rows, even in thread mode. Fixed to re-render as grouped threads when thread mode is active.

No rebuild was needed since Astro hot-reloaded the changes.