fix(P1+P2): swarm review — UX fixes + V1 dead code cleanup

P1 — UX visible:
- Add 4 missing translations (leather_mittens, ball_gag_3d, taser, debug_wand)
- Fix earplugs resistance bucket: "blindfold" → "earplug"
- Split mixin config: core (require=1) + compat MCA (require=0)
- Bump PROTOCOL_VERSION from "1" to "2"
- Add debug_wand item model (no texture — debug only)
- Fix 3 display_name inconsistencies (chain, vine_seed, shock_collar_auto)

P2 — Dead code cleanup:
- Delete IHas3DModelConfig + Model3DConfig (zero imports)
- Remove MovementStyleResolver.resolveV1Fallback() + V1Fallback record + V1 constants
- Remove AnimationTickHandler V1 fallback block + buildAnimationId()
- Document PlayerEquipment.equipInRegion() bypass as intentional (force-equip paths)

src/main/resources/tiedup.mixins.json

@@ -6,22 +6,14 @@
   "refmap": "tiedup.refmap.json",
   "mixins": [
     "MixinServerPlayer",
-    "MixinMCAVillagerInteraction",
-    "MixinMCAVillagerLeash",
-    "MixinMCAOpenAIChatAI",
-    "MixinMCAMessenger",
     "MixinLivingEntityBodyRot"
   ],
   "client": [
-    "client/MixinVillagerEntityBaseModelMCA",
-    "client/MixinVillagerEntityMCAAnimated",
-    "client/MixinMCASpeechManager",
-    "client/MixinMCAPlayerExtendedModel",
     "client/MixinPlayerModel",
     "client/MixinCamera",
     "client/MixinLivingEntitySleeping"
   ],
   "injectors": {
-    "defaultRequire": 0
+    "defaultRequire": 1
   }
 }