docs(skills): add comprehensive ananta-ps-engine skill with architecture, runbooks, and reference guides

.agents/skills/ananta-ps-engine/references/binary_patching_guide.md

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+# GameAssembly.dll (Il2Cpp) Binary Patching Reference
+
+This document outlines the standard binary patch patterns for NetEase Il2Cpp Unity clients to allow offline private server analysis.
+
+---
+
+## 1. Unity TLS / Certificate Validation Bypass
+
+### Target:
+`UnityEngine.Networking.CertificateHandler.ValidateCertificate`
+
+### Patch:
+Replace function prologue with immediate return `true` / `0`:
+```assembly
+xor eax, eax
+ret
+```
+Opcode: `31 C0 C3` (or `B0 01 C3` for `mov al, 1; ret`).
+This allows `UnityWebRequest` to communicate with custom local HTTPS proxies without certificate verification failures.
+
+---
+
+## 2. PSO Warmup / Shader Compiling Stub
+
+### Target:
+`UnityEngine.PSOWarmupAsyncOperation..ctor`
+
+### Patch:
+```assembly
+ret
+```
+Opcode: `C3 CC CC CC`
+Stubs out the engine-level warmup operation if boot configuration or remote JSON flags fail to suppress it.
+
+---
+
+## 3. NetEase Anti-Cheat (NEAC) Stubbing
+
+### Target:
+`NeacUtils.Initialize` or `AntiCheat` initialization routines.
+
+### Patch:
+```assembly
+xor eax, eax
+ret
+```
+Opcode: `31 C0 C3`
+Prevents NEAC background thread monitoring and process termination during local debugging.