HoR Engine Shim

• ForgeContentsRenderer Crash Fix (Safety Net)
  Adds a Harmony finalizer on ForgeContentsRenderer.OnRenderFrame that suppresses NullReferenceException when the forge block entity's MultiTextureMeshRef is null. This is a base-game VS 1.22.2 race condition, the forge renderer subscribes to the render loop before its mesh is ready. Without the fix, the client hard-crashes every time a forge is in render range during that window. The safety net logs the first 3 occurrences then silences, and the mesh rebuilds normally on the next tick.

• Three-Layer Compatibility Architecture
  Combines in-memory IL rewriting, targeted Harmony engine shims, and safety-net runtime guards to keep legacy 1.21-era mods operational on Vintage Story 1.22.
• Clothing Pipeline Stability
  Uses deferred patch application plus shape-scoped normalization in the wearable merge path to prevent white/black upperbodyover regressions and shirt-switch GUI crashes caused by unsafe texture mutation.
• Digitigrade Model Clothing Geometry Handling
  Adds targeted PML merge filtering for non-seraph digitigrade models (Skaven/Rat and Arachnoid), including lower flap geometry cleanup to remove lingering floating lower texture artifacts near the feet.
• Child Deposit Grade Clamp
  Patches ChildDepositGenerator.GenDeposit behavior so invalid child grade indexes are clamped instead of crashing world generation when geology mods provide incomplete grade variants.
• CoolNow Orphan Override Neutralization
  Neutralizes legacy orphaned overrides of BlockEntityFirepit.CoolNow() so outdated assemblies can still load under 1.22 without CLR TypeLoadException failures.
• Version-Flexible Microsoft.Extensions Binding
  Adds resolver support for selected Microsoft.Extensions.* assemblies so compatible runtime versions can satisfy strict legacy binding requests at load time.

Technology: In-memory assembly rewriting via Mono.Cecil

• R1: Entity.Pos Field → Property
  Converts ldfld Entity::Pos to callvirt Entity::get_Pos(). In 1.22, Entity.Pos changed from a public field to a property. Without this fix, any mod accessing Entity.Pos crashes with MissingFieldException.