Vamooses Endeavors

NEW:
- XPObserver: alternative XP tracking engine using favor-delta measurement
  with independent per-house baselines and automatic season change detection
- Season helper (VE_Season): centralized season-aware XP cap config for both
  XPEngine and XPObserver; Season 2+ uses single flat cap (no pre/post split)
- Auto-activate on selection: config toggle to automatically set the active
  endeavor when selecting a house from the dropdown (no extra button click)
- Pin window button: pin icon in title bar keeps VE open through Escape key
  and auto-opens on reload

FIXED:
- Housing and Accessibility HC themes now default to Expressway font on Latin
  locales to prevent text overrun (Game Default's wider glyphs exceeded layout
  bounds); explicit user font choice is still respected

IMPROVED:
- Font system: Added "Game Default" font option using WoW's locale-appropriate
  font (STANDARD_TEXT_FONT) for proper CJK/Korean glyph coverage
- Non-Latin locale auto-detection: CJK locales (zhCN/zhTW/koKR) default to
  Game Default font, Cyrillic locales (ruRU/ukUA) default to Friz Quadrata
- Changed default font from Arial Narrow to Game Default for better
  international support
- Escape key now closes the VE window from anywhere (standard WoW behavior),
  no longer requires mouse to be over the window