Files
WoWee/include
Kelsi 07d0485a31 game/ui: generalize cast tracking to per-GUID map; add boss cast bars
Previously the target cast bar tracked a single target using 4 private
fields. This replaces that with unitCastStates_ (unordered_map<uint64_t,
UnitCastState>), tracking cast state for every non-player unit whose
SMSG_SPELL_START we receive.

Changes:
- GameHandler::UnitCastState struct: casting, spellId, timeRemaining,
  timeTotal
- getUnitCastState(guid) → returns cast state for any tracked unit
- isTargetCasting(), getTargetCastSpellId(), getTargetCastProgress(),
  getTargetCastTimeRemaining() now delegate to getUnitCastState(targetGuid)
- handleSpellStart: tracks all non-player casters (not just the target)
- handleSpellGo: erases caster from map when spell lands
- update loop: ticks down all unit cast states, erasing expired entries
- unitCastStates_ cleared on world reset
- renderBossFrames: shows red cast progress bar per boss slot with
  spell name + remaining seconds — critical for instance interrupt play
2026-03-09 23:13:30 -07:00
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