WhatsNext 0.17.4 — Separate Loot Navigation

- Replaced the in-page Loot View switch with two first-class left navigation sections.
- LOOT BROWSER opens the complete loot browser.
- MY LOOT opens the player's selected loot directly.
- Both sections reuse the same Blizzard-native Loot Tracker UI and filters.
- Page title/subtitle now change to match the active loot section.
- Background refresh logic now recognizes both loot sections.
