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/game_button_money_dialog_system.gd

@@ -0,0 +1,127 @@
+# game_button_money_dialog_system.gd
+# 40250 官方 1:1 浮动任务栏状态红点通知与金币分堆丢弃输入窗
+# 对照: uigamebutton.py, gamewindow.py, uipickmoney.py, PickMoneyDialog.py
+class_name GameButtonMoneyDialogSystem
+extends RefCounted
+
+# =========================================================================
+# 1. 浮动任务栏状态红点与操作按钮组 (GameButtonWindow)
+# =========================================================================
+class GameButtonManager extends RefCounted:
+	var button_visible: Dictionary = {
+		"STATUS": false,
+		"SKILL": false,
+		"QUEST": false,
+		"HELP": false,
+		"BUILD": false,
+		"EXIT_OBSERVER": false
+	}
+
+	var is_observer_mode: bool = false
+	var last_chat_packet_sent: String = ""
+
+	signal button_visibility_changed(btn_name: String, visible: bool)
+	signal observer_exit_triggered()
+
+	func check_game_buttons(stat_points: int, skill_active_points: int, play_time: int) -> void:
+		# player.GetStatus(player.STAT) > 0 -> StatusPlusButton
+		var show_status = stat_points > 0
+		_set_button("STATUS", show_status)
+
+		# player.GetStatus(player.SKILL_ACTIVE) > 0 -> SkillPlusButton
+		var show_skill = skill_active_points > 0
+		_set_button("SKILL", show_skill)
+
+		# 0 == player.GetPlayTime() -> HelpButton
+		var show_help = (play_time == 0)
+		_set_button("HELP", show_help)
+
+	func set_quest_notice(has_unread: bool) -> void:
+		_set_button("QUEST", has_unread)
+
+	func set_build_button(can_build: bool) -> void:
+		_set_button("BUILD", can_build)
+
+	func set_observer_mode(enabled: bool) -> void:
+		is_observer_mode = enabled
+		_set_button("EXIT_OBSERVER", enabled)
+
+	func click_exit_observer() -> void:
+		if is_observer_mode:
+			last_chat_packet_sent = "/observer_exit"
+			observer_exit_triggered.emit()
+
+	func _set_button(btn_name: String, is_show: bool) -> void:
+		if button_visible.get(btn_name, false) != is_show:
+			button_visible[btn_name] = is_show
+			button_visibility_changed.emit(btn_name, is_show)
+
+# =========================================================================
+# 2. 金币/物品分堆输入对话框 (PickMoneyDialog)
+# =========================================================================
+class PickMoneyDialog extends RefCounted:
+	const DIALOG_WIDTH: int = 170
+	const DIALOG_HEIGHT: int = 90
+
+	var is_open: bool = false
+	var max_value: int = 0
+	var unit_value: int = 1
+	var current_input_text: String = "1"
+
+	var pos_x: int = 0
+	var pos_y: int = 0
+
+	var last_accepted_value: int = 0
+
+	signal opened(max_val: int, unit_val: int, x: int, y: int)
+	signal accepted(amount: int)
+	signal closed()
+
+	func open_dialog(p_max_value: int, p_unit_value: int = 1, mouse_x: int = 0, mouse_y: int = 0, screen_w: int = 1024, screen_h: int = 768) -> void:
+		max_value = p_max_value
+		unit_value = p_unit_value
+		current_input_text = str(unit_value)
+		last_accepted_value = 0
+
+		# 40250 官方吸附定位计算
+		var half_w = DIALOG_WIDTH / 2
+		if mouse_x + half_w > screen_w:
+			pos_x = screen_w - DIALOG_WIDTH
+		elif mouse_x - half_w < 0:
+			pos_x = 0
+		else:
+			pos_x = mouse_x - half_w
+
+		pos_y = mouse_y - DIALOG_HEIGHT - 20
+		if pos_y < 0:
+			pos_y = 10
+
+		is_open = true
+		opened.emit(max_value, unit_value, pos_x, pos_y)
+
+	func input_text(text: String) -> void:
+		current_input_text = text
+
+	func on_accept() -> bool:
+		if not is_open:
+			return false
+
+		var text = current_input_text.strip_edges()
+		if text.is_valid_int():
+			var val = text.to_int()
+			if val > 0:
+				val = mini(val, max_value)
+				last_accepted_value = val
+				accepted.emit(val)
+				close_dialog()
+				return true
+
+		close_dialog()
+		return false
+
+	func close_dialog() -> void:
+		is_open = false
+		closed.emit()
+
+var game_buttons: GameButtonManager = GameButtonManager.new()
+var money_dialog: PickMoneyDialog = PickMoneyDialog.new()