fix: 装备属性面板避让逻辑 + 多项功能更新

- item_tooltip_view.gd: 新增 avoid_rect 属性，tooltip 与装备窗口重叠时自动推到左侧
- inventory_ui.gd: 悬停装备时传入窗口矩形作为避让区域
- 包含其他累积的功能开发和测试文件

project/ui/item_tooltip_bridge.gd

@@ -0,0 +1,56 @@
+# ItemTooltipBridge —— all item-bearing windows share the 40250 ItemTooltipView.
+#
+# Native Control.tooltip_text is deliberately disabled for item slots.  The
+# reference client owns one custom ItemToolTip instance and switches its data
+# as the pointer moves between inventory, storage, exchange and shop windows.
+extends RefCounted
+
+const ItemTooltipView = preload("res://ui/item_tooltip_view.gd")
+
+var _ui: CanvasLayer
+var _parent: Node
+var _proto: Node
+var _assets_root := ""
+var _item_list: RefCounted
+var _view: Control
+
+func setup(parent: Node, proto: Node = null, assets_root := "", item_list: RefCounted = null) -> void:
+	_parent = parent
+	_ui = parent as CanvasLayer
+	_proto = proto
+	_assets_root = assets_root if assets_root != "" else AssetRoot.path()
+	_item_list = item_list
+
+func bind(control: Control, item_getter: Callable) -> void:
+	if control == null:
+		return
+	control.tooltip_text = ""
+	control.mouse_entered.connect(func() -> void:
+		var item = item_getter.call()
+		show_item(item if item is Dictionary else {}))
+	control.mouse_exited.connect(hide)
+
+func show_item(item: Dictionary) -> void:
+	var vnum := int(item.get("vnum", 0))
+	if vnum <= 0:
+		hide()
+		return
+	var count := maxi(1, int(item.get("count", 1)))
+	var proto_data: Dictionary = _proto.item(vnum) if _proto and _proto.has_method("item") else {}
+	if _ui and _ui.has_method("show_item_tooltip"):
+		_ui.show_item_tooltip(vnum, count, proto_data, item, {}, _assets_root, _proto, _item_list)
+		return
+	if _view == null or not is_instance_valid(_view):
+		_view = ItemTooltipView.new()
+		_view.setup(_assets_root, _proto, _item_list)
+		_view.visible = false
+		_view.z_index = 200
+		if _parent:
+			_parent.add_child(_view)
+	_view.show_item(vnum, count, proto_data, item, {})
+
+func hide() -> void:
+	if _ui and _ui.has_method("hide_item_tooltip"):
+		_ui.hide_item_tooltip()
+	elif _view and is_instance_valid(_view):
+		_view.hide_tooltip()