feat(client): 完成40250客户端核心功能1:1对齐与桥梁高度采样修复

- 桥梁与静态物体高度采样修复：
  - 严格对齐 40250 CMapOutdoor::GetHeight 与 CAttributeInstance::GetHeight
  - 解析 .mdatr 中的 AttributeHeight 网格，使用 is_in_triangle_2d 准确计算桥面多边形平面方程
  - sample_height 查询邻近区块并返回 fMAX(fObjectHeight, fTerrainHeight)，彻底解决走上桥面穿透掉入水底/河床的问题
  - 新增 test_bridge_height_parity.gd 自动化对拍测试
- 40250 怪物击杀经验动效：
  - 1:1 实现 FLY_EXP(0) / FLY_HP / FLY_SP 粒子轨迹与爆炸吸附
- 40250 客户端全系统功能对齐（Batches 1-31）：
  - 包含公会、交易、骑乘、变身、钓鱼、采矿、商城、信件、结婚、地牢等 134 套对拍系统与自动化回归测试
- 文档沉淀：
  - 新增 docs/CLIENT-PARITY-AUDIT-AND-FIX-GUIDE.md 客户端对拍缺陷发现与修复工程指南

project/test_ui_char.gd

@@ -0,0 +1,24 @@
+extends SceneTree
+
+const UiAssets = preload("res://ui/ui_assets.gd")
+
+func _init() -> void:
+	var root := "../assets"
+	var vpath := "d:/ymir work/ui/public/Parameter_Slot_00.sub"
+	var tex = UiAssets.load_tex(root, vpath)
+	print("Parameter_Slot_00.sub tex: ", tex)
+	if tex is AtlasTexture:
+		var at := tex as AtlasTexture
+		print("Atlas rect: ", at.region)
+		if at.atlas is ImageTexture:
+			var img: Image = (at.atlas as ImageTexture).get_image()
+			print("Atlas size: ", img.get_size(), " format: ", img.get_format())
+			var c := img.get_pixel(125, 235)
+			print("Pixel sample at 125,235: ", c)
+	var locale_sub := "locale/en/ui/windows/label_std_item1.sub"
+	var t2 = UiAssets.load_tex(root, locale_sub)
+	print("label_std_item1 tex: ", t2)
+	var win_sub := "d:/ymir work/ui/game/windows/label_std_item1.sub"
+	var t3 = UiAssets.load_tex(root, win_sub)
+	print("windows/label_std_item1 tex: ", t3)
+	quit(0)