Battle Mender: Spec Plates

BattleMender v14.1.53 - Enemy buff filtering and 12.1 maintenance

- Enemy Buff categories cycle through empty, yellow include, and red exclude.
- Important buffs can exclude Big Defensive and External Defensive, making it
  easier to focus the display on enemy offensive cooldowns.
- Enemy Buff source labels and filtering now consistently exclude effects cast
  by you while retaining advanced source controls under Custom Auras.
- Includes recent friendly specialization continuity, duel plate handling,
  enemy cast-bar, aura-layout, and 12.1 compatibility fixes.