Refactor V2 animation, furniture, and GLTF rendering

Broad consolidation of the V2 bondage-item, furniture-entity, and
client-side GLTF pipeline.

Parsing and rendering
  - Shared GLB parsing helpers consolidated into GlbParserUtils
    (accessor reads, weight normalization, joint-index clamping,
    coordinate-space conversion, animation parse, primitive loop).
  - Grow-on-demand Matrix4f[] scratch pool in GltfSkinningEngine and
    GltfLiveBoneReader — removes per-frame joint-matrix allocation
    from the render hot path.
  - emitVertex helper dedups three parallel loops in GltfMeshRenderer.
  - TintColorResolver.resolve has a zero-alloc path when the item
    declares no tint channels.
  - itemAnimCache bounded to 256 entries (access-order LRU) with
    atomic get-or-compute under the map's monitor.

Animation correctness
  - First-in-joint-order wins when body and torso both map to the
    same PlayerAnimator slot; duplicate writes log a single WARN.
  - Multi-item composites honor the FullX / FullHeadX opt-in that
    the single-item path already recognized.
  - Seat transforms converted to Minecraft model-def space so
    asymmetric furniture renders passengers at the correct offset.
  - GlbValidator: IBM count / type / presence, JOINTS_0 presence,
    animation channel target validation, multi-skin support.

Furniture correctness and anti-exploit
  - Seat assignment synced via SynchedEntityData (server is
    authoritative; eliminates client-server divergence on multi-seat).
  - Force-mount authorization requires same dimension and a free
    seat; cross-dimension distance checks rejected.
  - Reconnection on login checks for seat takeover before re-mount
    and force-loads the target chunk for cross-dimension cases.
  - tiedup_furniture_lockpick_ctx carries a session UUID nonce so
    stale context can't misroute a body-item lockpick.
  - tiedup_locked_furniture survives death without keepInventory
    (Forge 1.20.1 does not auto-copy persistent data on respawn).

Lifecycle and memory
  - EntityCleanupHandler fans EntityLeaveLevelEvent out to every
    per-entity state map on the client.
  - DogPoseRenderHandler re-keyed by UUID (stable across dimension
    change; entity int ids are recycled).
  - PetBedRenderHandler, PlayerArmHideEventHandler, and
    HeldItemHideHandler use receiveCanceled + sentinel sets so
    Pre-time mutations are restored even when a downstream handler
    cancels the render.

Tests
  - JUnit harness with 76+ tests across GlbParserUtils, GltfPoseConverter,
    FurnitureSeatGeometry, and FurnitureAuthPredicate.

src/main/java/com/tiedup/remake/events/lifecycle/PlayerDisconnectHandler.java

@@ -81,6 +81,19 @@ public class PlayerDisconnectHandler {
         // Clean up cell selection mode
         com.tiedup.remake.cells.CellSelectionManager.cleanup(playerId);
 
+        // NOTE: tiedup_locked_furniture is intentionally NOT cleaned on logout —
+        // it's load-bearing for NetworkEventHandler.handleFurnitureReconnection
+        // (the "disconnect to escape" prevention).
+        //
+        // tiedup_furniture_lockpick_ctx IS cleaned: it's session-ephemeral,
+        // valid only during an active lockpick mini-game. If left stale it
+        // causes PacketLockpickAttempt to mis-route a later body-item
+        // lockpick as a furniture pick and silently return without ending
+        // the session.
+        if (event.getEntity() instanceof net.minecraft.server.level.ServerPlayer serverPlayer) {
+            serverPlayer.getPersistentData().remove("tiedup_furniture_lockpick_ctx");
+        }
+
         // BUG FIX: Security - Remove labor tools from disconnecting player
         // This prevents players from keeping unbreakable tools by disconnecting
         if (