diff --git a/game/tests/run_all.gd b/game/tests/run_all.gd
index 5afadfaa..45b1d68c 100644
--- a/game/tests/run_all.gd
+++ b/game/tests/run_all.gd
@@ -32,6 +32,7 @@ func _suites() -> Array:
 		{"path": "res://tests/unit/data_config/aux_target_violation_test.gd", "expect": 1},   # 迭代 7 T1——真视窄域护栏
 		{"path": "res://tests/unit/data_config/reward_dangling_aux_test.gd", "expect": 1},   # 迭代 7 T1——aux 双表校验
 		{"path": "res://tests/unit/data_config/rng_service_test.gd", "expect": 0},
+		{"path": "res://tests/unit/core/aux_items_test.gd", "expect": 0},   # 迭代 7 T7——魔法道具结构冻结断言面
 		{"path": "res://tests/unit/battle_settlement/damage_math_test.gd", "expect": 0},
 		{"path": "res://tests/unit/battle_settlement/damage_controller_test.gd", "expect": 0},
 		{"path": "res://tests/unit/contracts/system_contracts_test.gd", "expect": 0},
diff --git a/game/tests/unit/core/aux_items_test.gd b/game/tests/unit/core/aux_items_test.gd
new file mode 100644
index 00000000..2dff7fea
--- /dev/null
+++ b/game/tests/unit/core/aux_items_test.gd
@@ -0,0 +1,118 @@
+# VERTICAL SLICE - NOT FOR PRODUCTION
+# 魔法道具 AuxItems 类单测（迭代 7 T7——结构冻结断言面；设计权威 魔法道具.md + registry aux_items）。
+# 覆盖：授予归因 / Used 不可逆 / 真视恒可用 / 预读点击级零信息拒绝 / 3×3 边缘窗口∩板 /
+#       叠加层三清（retire_overlays 不动库存）/ 关卡末 reset / 零随机（同操作序列重放两遍投影逐位）。
+# 运行：godot --headless --path game --script res://tests/unit/core/aux_items_test.gd（expect 0）
+extends SceneTree
+
+const AuxItemsScript := preload("res://core/aux_items.gd")
+
+var _problems: Array = []
+
+
+func check(cond: bool, msg: String) -> void:
+	if not cond:
+		_problems.append(msg)
+
+
+class StubTable:
+	var rows := {}
+	func row_by_id(id: String) -> Dictionary:
+		return rows.get(id, {})
+	func active_rows() -> Array:
+		return []
+
+
+class StubDB:
+	var aux_items: StubTable
+
+
+func _stub_db() -> StubDB:
+	var t := StubTable.new()
+	t.rows = {
+		"sapper_order": {"item_id": "sapper_order", "display_name": "工兵令", "dimension_tags": ["action"],
+			"effect_kinds": ["ap_grant"], "target": "none", "magnitude": 2, "use_phase": "active_dig"},
+		"nest_pendulum": {"item_id": "nest_pendulum", "display_name": "探巢摆钟", "dimension_tags": ["risk"],
+			"effect_kinds": ["mine_reveal"], "target": "area_3x3", "magnitude": 0, "use_phase": "active_dig"},
+		"loot_compass": {"item_id": "loot_compass", "display_name": "探宝罗盘", "dimension_tags": ["plan"],
+			"effect_kinds": ["reward_preview"], "target": "area_3x3", "magnitude": 0, "use_phase": "active_dig"},
+	}
+	var db := StubDB.new()
+	db.aux_items = t
+	return db
+
+
+func _new_inv() -> Object:
+	return AuxItemsScript.new(_stub_db())
+
+
+func _unrevealed(_c: Vector2i) -> bool:
+	return true   # 测试板全未开（预读恒有信息——点击级零信息另用假回调测）
+
+
+func _all_revealed(_c: Vector2i) -> bool:
+	return false   # 预读点击级零信息（窗口全已开）
+
+
+func _init() -> void:
+	# ① 授予归因+受理序+Used 不可逆
+	var inv = _new_inv()
+	var r1: Dictionary = inv.add_item("sapper_order", "safe_cell", Vector2i(3, 4), 2)
+	var r2: Dictionary = inv.add_item("nest_pendulum", "flag_hit", Vector2i(5, 6), 3)
+	check(int(r1.handle) == 1 and int(r2.handle) == 2, "句柄受理序单调（1→2——零随机）")
+	check(String(r1.source_class) == "safe_cell" and r1.origin_cell == Vector2i(3, 4) and int(r1.round_index) == 2,
+		"授予来源可归因（source/cell/round）")
+	var inv_proj: Array = inv.query_inventory(Callable())
+	check(inv_proj.size() == 2 and not bool(inv_proj[0].used), "库存投影两件未用")
+	check(bool(inv.consume(int(r1.handle)).get("used", false)), "consume 返回已用快照回执")
+	check(inv.consume(int(r1.handle)).is_empty(), "Used 不可逆——二次 consume 拒绝（空回执）")
+	check(int(inv.inventory_count()) == 2, "Used 保留只读（库存计数不变）")
+
+	# ② 真视恒可用+边缘窗口∩板（3×3 中心贴角——角 4 格）
+	var v_ok: Dictionary = inv.validate_use(int(r2.handle), Vector2i(0, 0), Vector2i(10, 10), Callable())
+	check(bool(v_ok.ok) and v_ok.resolved.size() == 4,
+		"真视边缘窗口=窗口∩板（角 4 格——护栏只缩不扩）")
+	# 预读点击级零信息：中心板内但回调恒 false（全已开）→拒绝零消耗
+	var inv2 = _new_inv()
+	var rp: Dictionary = inv2.add_item("loot_compass", "safe_cell", Vector2i(1, 1), 1)
+	var v_zero: Dictionary = inv2.validate_use(int(rp.handle), Vector2i(5, 5), Vector2i(10, 10), Callable())
+	check(not bool(v_zero.ok) and int(inv2.inventory_count()) == 1,
+		"预读点击级零信息拒绝（不消耗——库存不变）")
+	# 目标越板
+	var v_oob: Dictionary = inv2.validate_use(int(rp.handle), Vector2i(12, 5), Vector2i(10, 10), Callable())
+	check(not bool(v_zero.ok) and not bool(v_oob.ok), "越板目标拒绝")
+
+	# ③ 叠加层+三清（retire 不动库存；reset 全清）
+	inv2.apply_overlay("mine_reveal", v_ok.resolved)
+	inv2.apply_overlay("reward_preview", [Vector2i(5, 5)])
+	var ov: Dictionary = inv2.query_overlays()
+	check(ov.mine_reveal.size() == 4 and ov.reward_preview.size() == 1, "叠加层两集落位（真视 4/预读 1）")
+	inv2.retire_overlays()
+	check(inv2.query_overlays().mine_reveal.is_empty() and int(inv2.inventory_count()) == 1,
+		"换图三清：叠加层消亡+库存不动（关卡域）")
+	inv2.reset()
+	check(inv2.inventory_count() == 0 and inv2.probe().used == 0, "关卡末 reset 全清（幂等）")
+
+	# ④ 零随机重放：同操作序列两遍，投影逐位相同
+	var replay_a: Array = []
+	var replay_b: Array = []
+	for rep in 2:
+		var inv3 = _new_inv()
+		var h1: Dictionary = inv3.add_item("sapper_order", "safe_cell", Vector2i(2, 3), 1)
+		inv3.validate_use(int(h1.handle), Vector2i(4, 4), Vector2i(10, 10), Callable())
+		inv3.apply_overlay("mine_reveal", [Vector2i(4, 4)])
+		inv3.consume(int(h1.handle))
+		if rep == 0:
+			replay_a = [inv3.query_inventory(Callable()), inv3.query_overlays(), inv3.probe()]
+		else:
+			replay_b = [inv3.query_inventory(Callable()), inv3.query_overlays(), inv3.probe()]
+	check(str(replay_a) == str(replay_b), "零随机重放：库存+叠加层+探针投影逐位相同")
+
+	# ---- 汇总 ----
+	if _problems.is_empty():
+		print("[aux_items_test] PASS — 授予归因/Used 不可逆/真视恒可用/零信息拒绝/边缘窗口/三清/零随机重放 全过")
+		quit(0)
+	else:
+		for p in _problems:
+			push_error("[aux_items_test] FAIL — " + p)
+		quit(1)
diff --git a/game/tests/unit/core/aux_items_test.gd.uid b/game/tests/unit/core/aux_items_test.gd.uid
new file mode 100644
index 00000000..88eb53c2
--- /dev/null
+++ b/game/tests/unit/core/aux_items_test.gd.uid
@@ -0,0 +1 @@
+uid://dqx67xrrbvp82