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/mob_death_drop_test.gd

@@ -27,7 +27,9 @@ class MockClient extends Node:
 		return _main_vid
 
 	func get_entity(vid: int) -> Dictionary:
-		return {"vid": vid, "pos": Vector3.ZERO, "race": 101, "name": "Wild Dog", "hp": 100, "max_hp": 100}
+		# The ground item owner is the local player.  Keep the fixture aligned with
+		# the 40250 ownership pre-check instead of accidentally testing rejection.
+		return {"vid": vid, "pos": Vector3.ZERO, "race": 101, "name": "Hero" if vid == _main_vid else "Wild Dog", "hp": 100, "max_hp": 100}
 
 	func get_ground_items() -> Array:
 		return []
@@ -46,7 +48,9 @@ func _init() -> void:
 	test_player_controller_ignores_dead()
 	test_ground_items_coordinate_mapping()
 	print("mob_death_drop_test passed with 0 failures!")
-	quit(0)
+	await process_frame
+	await process_frame
+	call_deferred("quit", 0)
 
 func test_mob_death_and_despawn() -> void:
 	var client = MockClient.new()
@@ -95,9 +99,9 @@ func test_mob_death_and_despawn() -> void:
 	assert(not net_world._by_vid.has(mob_vid), "Mob should be erased from _by_vid on despawn")
 	print("OK: Mob death detach & despawn lifecycle verified")
 
-	net_world.queue_free()
-	mount.queue_free()
-	client.queue_free()
+	net_world.free()
+	mount.free()
+	client.free()
 
 func test_player_controller_ignores_dead() -> void:
 	var pc = PlayerController.new()
@@ -119,9 +123,9 @@ func test_player_controller_ignores_dead() -> void:
 	assert(not blocked, "Dead mob should not block player movement")
 
 	print("OK: PlayerController ignores dead mobs for collision and picking")
-	pc.queue_free()
-	player.queue_free()
-	dead_mob.queue_free()
+	pc.free()
+	player.free()
+	dead_mob.free()
 
 func test_ground_items_coordinate_mapping() -> void:
 	# Set map base position (e.g. Map 1: 400000 cm X, 300000 cm Y)
@@ -187,8 +191,8 @@ func test_ground_items_coordinate_mapping() -> void:
 	# Reset MapCoord base
 	MapCoord.set_base(Vector2.ZERO)
 
-	gi.queue_free()
-	world.queue_free()
-	player.queue_free()
-	mount.queue_free()
-	client.queue_free()
+	gi.free()
+	world.free()
+	player.free()
+	mount.free()
+	client.free()