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/test_skill_inventory_parity.gd

@@ -48,6 +48,7 @@ class MockClient extends Node:
 	var quickslot_adds := []
 	var quickslot_dels := []
 	var quickslot_swaps := []
+	var auto_confirm_quickslots := true
 	var chat_messages := []
 
 	func _init() -> void:
@@ -89,7 +90,7 @@ class MockClient extends Node:
 		used_skills.append({"skill_id": skill_id, "target_vid": target_vid})
 		return true
 
-	func cast_skill(motion_idx: int, rot_deg: float, x: int, y: int) -> bool:
+	func cast_skill(motion_idx: int, rot_deg: float, x: int, y: int, _arg: int = 0) -> bool:
 		cast_skills.append({"motion_idx": motion_idx, "rot_deg": rot_deg, "x": x, "y": y})
 		return true
 
@@ -103,19 +104,32 @@ class MockClient extends Node:
 
 	func quickslot_add(pos: int, type: int, ref: int) -> bool:
 		quickslot_adds.append({"pos": pos, "type": type, "ref": ref})
+		if not auto_confirm_quickslots:
+			return true
 		quickslots[pos] = {"pos": pos, "type": type, "ref": ref}
+		# Simulate GC_QUICKSLOT_ADD rather than making Quickbar trust the request
+		# return value as local authority.
+		quickslots_changed.emit()
 		return true
 
 	func quickslot_del(pos: int) -> bool:
 		quickslot_dels.append(pos)
+		if not auto_confirm_quickslots:
+			return true
 		quickslots[pos] = {"pos": pos, "type": 0, "ref": 0}
+		quickslots_changed.emit()
 		return true
 
 	func quickslot_swap(pos: int, pos_to: int) -> bool:
 		quickslot_swaps.append({"from": pos, "to": pos_to})
+		if not auto_confirm_quickslots:
+			return true
 		var tmp: Dictionary = quickslots[pos]
 		quickslots[pos] = quickslots[pos_to]
 		quickslots[pos_to] = tmp
+		quickslots[pos]["pos"] = pos
+		quickslots[pos_to]["pos"] = pos_to
+		quickslots_changed.emit()
 		return true
 
 	func say(_type: int, text: String) -> bool:
@@ -509,5 +523,19 @@ func _test_quickbar_persistence() -> void:
 	_check(qb._state[2].kind == "emote" and qb._state[2].id == 1, "Restored slot 2 is Emote 1")
 	_check(qb._state[3].kind == "", "Restored slot 3 is empty")
 
+	# Request/GC ordering: an accepted request is not local authority until the
+	# corresponding GC_QUICKSLOT_* update arrives.
+	client.auto_confirm_quickslots = false
+	var before_kind := String(qb._state[0].kind)
+	var before_id := int(qb._state[0].id)
+	_check(qb.assign(0, "item", 12), "Delayed quickslot add request is accepted")
+	_check(qb._state[0].kind == before_kind and int(qb._state[0].id) == before_id,
+			"Delayed add does not change local slot before GC_QUICKSLOT_ADD")
+	client.quickslots[0] = {"pos": 0, "type": 1, "ref": 12}
+	client.quickslots_changed.emit()
+	_check(qb._state[0].kind == "item" and int(qb._state[0].id) == 12,
+			"GC_QUICKSLOT_ADD refreshes the local slot")
+	client.auto_confirm_quickslots = true
+
 	qb.queue_free()
 	client.queue_free()