Vamooses Endeavors

NEW:
- Decor Duplicate Detection: Observer mode now only counts first-learns toward
  decor XP. Duplicate acquisitions (items you already own) are detected via the
  Blizzard catalog API and skipped, preventing inflated XP totals
- Auto-Repair: On login, Observer automatically fixes inflated decor counts from
  older versions that didn't have duplicate detection. Repair actions are logged
  in the observation audit trail
- Manual Repair: `/ve repairdecor` command to manually fix inflated decor counts
  using drift analysis

IMPROVED:
- Minimap Button: Replaced hand-rolled minimap button with embedded LibDBIcon.
  Proper compatibility with ElvUI, SexyMap, Bazooka, Titan Panel, and other
  minimap addons out of the box
- Event Debouncing: PLAYER_HOUSE_LIST_UPDATED is now debounced (0.3s) in both
  trackers -- Blizzard fires this multiple times on login/reload, which could
  cause redundant processing and UI flicker
- Favor Update Deduplication: Redundant HOUSE_LEVEL_FAVOR_UPDATED events with
  the same favor and level for the same house are now skipped
- Initiative Reward Detection: Chest indicator now also recognizes any single
  250 XP observation as an initiative reward, catching cases where the reward
  wasn't properly tagged
- House Info Requests: Full refresh now requests house list first and lets the
  callback handle favor data, avoiding double-requests

DEBUG:
- `/ve obslog` -- dumps all XP Observer observations for the current house
- `/ve decorinfo <itemID>` -- dumps Blizzard catalog info for a decor item
- Chest indicator state transitions now logged in debug mode