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

**All features working** — layout, API endpoints, email detail, compose, reply/forward, account switching, search, thread mode, swipe gestures.

**One bug found and fixed:**
- Compose "New Message" pre-filled To with `ace@manglasabang.com` regardless of active owner. Fixed to use owner-aware logic: Ace composing → To = `junwon@manglasabang.com`, Junwon composing → To = `ace@manglasabang.com`. Rebuilt and verified live.