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/atlas_test.gd

@@ -55,6 +55,9 @@ func _run() -> void:
 	_ck(atlas._map != null and atlas._map.size == Vector2(256, 256), "atlas builds map texture")
 	_ck(String(atlas._coord.text).contains("X 12800") and String(atlas._coord.text).contains("Y 25600"),
 		"atlas reports player server-centimetre coordinates")
+	atlas.add_signal_point(6400, 12800)
+	_ck(atlas.signal_point_count() == 1 and atlas._signal_points[0] == Vector2(6400, 12800),
+		"quest ADDMAPSIGNAL is retained as an Atlas waypoint")
 	atlas._overlay.queue_redraw()
 	_ck(atlas._overlay.is_inside_tree(), "atlas world marker overlay is live")
 	var old_pos: Vector2 = atlas._map.position
@@ -120,5 +123,7 @@ func _run() -> void:
 	reset.pressed = true
 	atlas._on_map_input(reset)
 	_ck(atlas._map.position == atlas._map_origin, "atlas right click recenters map")
+	atlas.clear_signal_points()
+	_ck(atlas.signal_point_count() == 0, "quest signal clear removes Atlas waypoints")
 	atlas.close()
 	_ck(not atlas.is_open(), "atlas closes")