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_state_arg_parity.gd

@@ -0,0 +1,51 @@
+# test_skill_state_arg_parity —— 40250 FUNC_SKILL uArg 到动作视图的映射。
+# 覆盖 OnUseSkill: low nibble = loop count，bit 4 = moving-skill。
+extends SceneTree
+
+const NetWorld = preload("res://net_world.gd")
+
+class FakeSkillTable extends RefCounted:
+	func motion_name_by_idx(idx: int) -> String:
+		return "skill_%d" % idx
+
+class SkillView extends Node3D:
+	var calls := []
+	var states := []
+	func play_skill_motion(name: String, grade: int = 0, loop_count: int = 0,
+			moving_skill: bool = false) -> bool:
+		calls.append([name, grade, loop_count, moving_skill])
+		return true
+	func set_anim_state(state: String) -> void:
+		states.append(state)
+
+var _fail := 0
+
+func _ck(ok: bool, message: String) -> void:
+	if not ok:
+		_fail += 1
+		printerr("FAIL: " + message)
+
+func _init() -> void:
+	var nw := NetWorld.new()
+	var view := SkillView.new()
+	get_root().add_child(nw)
+	nw.skill_table = FakeSkillTable.new()
+
+	# 0x12 = loop count 2 + IsUsingMovingSkill bit (1 << 4).
+	nw._apply_anim(view, NetWorld.FUNC_SKILL | 7, false, NetWorld.WALKMODE_RUN, false, 0x12)
+	_ck(view.calls == [["skill_7", 0, 2, true]],
+			"FUNC_SKILL uArg -> play_skill_motion(name, grade, loop_count, moving)")
+
+	# A normal one-shot with no loop override must not inherit the moving bit.
+	nw._apply_anim(view, NetWorld.FUNC_SKILL | 3, false, NetWorld.WALKMODE_RUN, false, 0)
+	_ck(view.calls[-1] == ["skill_3", 0, 0, false],
+			"zero skill arg -> ordinary one-shot defaults")
+
+	view.free()
+	nw.free()
+	if _fail == 0:
+		print("PASS: test_skill_state_arg_parity")
+		quit(0)
+	else:
+		printerr("%d check(s) failed" % _fail)
+		quit(1)