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/assets/tiedup/lang/en_us.json

@@ -963,5 +963,10 @@
   "command.tiedup.debt.set": "Set %1$s's total debt to %2$s emeralds.",
   "command.tiedup.debt.added": "Added %1$s emeralds to %2$s's debt. Remaining: %3$s",
   "command.tiedup.debt.removed": "Removed %1$s emeralds from %2$s's debt. Remaining: %3$s",
-  "command.tiedup.debt.removed_paid": "Removed %1$s emeralds from %2$s's debt. Remaining: %3$s (PAID OFF!)"
+  "command.tiedup.debt.removed_paid": "Removed %1$s emeralds from %2$s's debt. Remaining: %3$s (PAID OFF!)",
+
+  "item.tiedup.leather_mittens": "Leather Mittens",
+  "item.tiedup.ball_gag_3d": "Ball Gag",
+  "item.tiedup.taser": "Taser",
+  "item.tiedup.debug_wand": "Debug Wand"
 }

src/main/resources/assets/tiedup/models/item/debug_wand.json

@@ -0,0 +1,6 @@
+{
+  "parent": "minecraft:item/generated",
+  "textures": {
+    "layer0": "tiedup:item/debug_wand"
+  }
+}