feat(battle-engine): full Unity/VFX/god-object shims + expanded copy closure (2570 files)

Authored Unity primitive/object-model shim, VFX layer (control-flow-preserving, InstantVfx never invokes its action -- headless suppression), god-object stubs (GameMgr/EffectMgr/UIManager with faithfully-extracted nested enums), View/UI/Touch tree, LitJson+BetterList+Tuple copied, third-party stubs. Discovered Roslyn header-error masking: fixing class-header type errors unmasks body references, so the true copy closure is ~2570 files (was 782 under masking). Errors: masked-25720 -> 268; our shim files compile clean. Remaining: ~50 residual shim/external types, 24 NGUI UI-base overrides, static-type fixes, plus likely 1-2 more unmask waves.

SVSim.BattleEngine/Engine/FriendApply.cs

@@ -0,0 +1,42 @@
+using System;
+using LitJson;
+
+public class FriendApply : HeaderData
+{
+	public uint id;
+
+	public int viewerId;
+
+	public string name;
+
+	public string countryCode;
+
+	public int rank;
+
+	public long emblemId;
+
+	public int degreeId;
+
+	public DateTime lastPlayTime;
+
+	public DateTime applyedTime;
+
+	public int MissionType { get; private set; }
+
+	public FriendApply(JsonData data)
+	{
+		id = (uint)data["id"].ToLong();
+		viewerId = data["viewer_id"].ToInt();
+		name = (string)data["name"];
+		countryCode = (string)data["country_code"];
+		rank = data["rank"].ToInt();
+		emblemId = data["emblem_id"].ToLong();
+		degreeId = data["degree_id"].ToInt();
+		lastPlayTime = DateTime.Parse(data["last_play_time"].ToString());
+		applyedTime = DateTime.Parse(data["create_time"].ToString());
+		if (data.Keys.Contains("mission_type"))
+		{
+			MissionType = data["mission_type"].ToInt();
+		}
+	}
+}