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/loading_screen.gd

@@ -31,7 +31,11 @@ func setup(m2client: Node = null) -> void:
 func _on_phase(phase: String) -> void:
 	if phase.to_lower() == "loading":
 		show_for(String(HINTS.get("loading", "载入地图…")))
-	elif phase.to_lower() in ["login", "select"]:
+	else:
+		# ClientVS22 owns the full-screen load window only in
+		# SetLoadingPhase().  SetLoginPhase(), SetSelectPhase() and
+		# SetGamePhase() all return control to their phase window; keeping the
+		# mask for GAME would leave an invisible input blocker over the world.
 		hide_screen()
 
 func show_for(text: String) -> void: