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/remote_motion_splash_test.gd

@@ -0,0 +1,141 @@
+# remote_motion_splash_test —— 40250 ActorInstanceMotionEvent::SPECIAL_ATTACKING
+# / InstanceBase::AttackProcess 的远端 actor 回归。
+#
+# 远端攻击事件必须建立同样的 SplashArea 并执行碰撞、命中上限和去重；
+# 但远端事件不能伪造本地主角的 CG_ATTACK。
+extends SceneTree
+
+const NetPlay = preload("res://net_play.gd")
+
+class HitActor extends Node3D:
+	var hits := 0
+	var delays: Array = []
+	var shakes := 0
+	var spheres := [{"radius": 60.0, "pos": Vector3.ZERO, "bone": ""}]
+
+	func get_defending_spheres() -> Array:
+		return spheres
+
+	func insert_delay(value: float) -> void:
+		delays.append(value)
+
+	func hit_good(_scalar: float, _stunned: bool) -> void:
+		hits += 1
+
+	func shake() -> void:
+		shakes += 1
+
+class ClientStub extends Node:
+	var entities: Dictionary = {}
+	var attacks: Array = []
+
+	func is_in_game() -> bool:
+		return true
+
+	func get_entity(vid: int) -> Dictionary:
+		return entities.get(vid, {})
+
+	func get_entities() -> Array:
+		return entities.values()
+
+	func attack(skill: int, vid: int) -> bool:
+		attacks.append([skill, vid])
+		return true
+
+class PCStub extends Node:
+	var player: Node3D
+
+class WorldStub extends Node:
+	var nodes: Dictionary = {}
+
+	func node_for(vid: int) -> Node3D:
+		return nodes.get(vid, null)
+
+var _fail := 0
+
+func _ck(ok: bool, message: String) -> void:
+	if not ok:
+		_fail += 1
+		printerr("FAIL: " + message)
+
+func _init() -> void:
+	await _run()
+	if _fail == 0:
+		print("PASS: remote_motion_splash_test (remote SPECIAL_ATTACKING)")
+		quit(0)
+	else:
+		printerr("%d check(s) failed" % _fail)
+		quit(1)
+
+func _run() -> void:
+	var client := ClientStub.new()
+	var pc := PCStub.new()
+	var world := WorldStub.new()
+	var local := HitActor.new()
+	var remote := HitActor.new()
+	local.position = Vector3(-1.0, 0.0, 0.0)
+	remote.position = Vector3.ZERO
+	pc.player = local
+	for n in [client, pc, world, local, remote]:
+		get_root().add_child(n)
+
+	client.entities[1] = {"vid": 1, "kind": 0, "race": 0, "dead": false,
+		"in_safe": false, "pk_mode": 0}
+	client.entities[2] = {"vid": 2, "kind": 2, "race": 101, "dead": false,
+		"in_safe": false, "owner_vid": 0}
+	world.nodes[1] = local
+	world.nodes[2] = remote
+
+	var np: Node = NetPlay.new()
+	get_root().add_child(np)
+	np.client = client
+	np.pc = pc
+	np.net_world = world
+	np._main_vid = 1
+	np._local_time = 1.0
+
+	var event := {
+		"type": 4,
+		"skill_index": 51,
+		"duration_time": 0.5,
+		"enable_hit_process": true,
+		"attack_type": 0,
+		"hitting_type": 2,
+		"stiffen_time": 0.1,
+		"invisible_time": 0.2,
+		"external_force": 0.0,
+		"hit_limit_count": 1,
+		"collision_spheres": [{"radius": 60.0, "pos": Vector3(100, 0, 0)}],
+	}
+	np.start_remote_motion_splash(2, event)
+	_ck(np._remote_motion_splashes.has(2),
+			"remote SPECIAL_ATTACKING creates an actor-owned SplashArea")
+
+	np._remote_splash_attack_process()
+	_ck(local.hits == 1, "remote splash applies the normal hit reaction to the local actor")
+	_ck(local.delays.size() == 1 and is_equal_approx(float(local.delays[0]), 0.1),
+			"remote splash applies the server motion stiffen time")
+	_ck(remote.delays.size() == 1 and is_equal_approx(float(remote.delays[0]), 0.1),
+			"remote splash inserts delay on the attacking actor, not the local input actor")
+	_ck(client.attacks.is_empty(),
+			"remote splash does not synthesize a local CG_ATTACK packet")
+
+	# Clearing the victim's temporary invisible window must still not produce a
+	# second hit: CActorInstance::m_HitDataMap deduplicates the same VID.
+	np._victim_invisible_until.clear()
+	np._remote_splash_attack_process()
+	_ck(local.hits == 1, "remote splash deduplicates a victim for the area lifetime")
+	_ck(np._remote_motion_splashes.has(2), "active remote splash remains until DuringTime expires")
+
+	np._local_time = 1.5
+	np._remote_splash_attack_process()
+	_ck(not np._remote_motion_splashes.has(2),
+			"remote splash is cleaned up at DuringTime")
+
+	np.free()
+	remote.free()
+	local.free()
+	world.free()
+	pc.free()
+	client.free()
+	await process_frame