fix(迭代22反哺⑤补): 试炼镐C区展示行——charges=0件被_reseed_attune_charges注入循环跳过不入骑库存,而C区槽投影遍历骑库存→试炼镐C区不可见/悬停浮窗进度无处承载(追认批集成缺口,单测只测读数口未覆盖投影链)。修复=inventory_projection末段追加自动兑付件展示行(合成handle=-1非库存句柄+note积点N/8+槽点击走说明toast不进两步交互); use_attune_convert删除遗留孤儿函数头注释清一; 单测新增④b展示行断言两条(装配即入投影handle=-1+note=积点0/8/开格后1/8组合根重查链)+StubAutoInvRunner空骑库存桩。重闸全绿: 冒烟898/0+单测22套+probe_gate --full+render_gate golden 3屏0.00%+doc三闸对基线零新增(死链3/拔旗1/gdd_lint三文件表格占比FAIL均实证存量=79aac07版本对比表格行零变化)+熵增闸PASS; 06裁决小节与实现报告⑤条补集成补丁注记

game/tests/unit/core/treasure_effects_test.gd

@@ -94,6 +94,23 @@ func _init() -> void:
 	Kit.check_quiet(int(ob4b.action_economy._ap) == ap_base and not bool(ob4b.attune_convert_state().get("assembled", true)),
 		"试炼镐反例：未装配零兑付零计数（AP=整轮表值、读数口 assembled=false）")
 
+	# ④b 自动兑付件 C 区展示行（反哺批⑤补——charges=0 不入骑库存〔_reseed 注入循环跳过〕，
+	# 展示行=C 区悬停浮窗进度唯一承载：handle=-1 非库存句柄+note 进度；空骑库存桩直构投影链）
+	var rng4c = load("res://core/rng_service.gd").new(); rng4c.set_master_seed(253)
+	var ob4c = orch_s.new(db, rng4c)
+	ob4c.begin_battle({"level_index": 1, "node_depth": 0, "hero_hp": int(db.hero.max_hp), "attunement": ["trial_pick"]})
+	var ctrl4 = load("res://presentation/treasure_interact_controller.gd").new(db, null, null, null, null,
+		func(): return ob4c, func(): return StubAutoInvRunner.new())
+	var proj4: Array = ctrl4.inventory_projection()
+	Kit.check_quiet(proj4.size() == 1 and int(proj4[0].get("handle", 0)) == -1
+		and String(proj4[0].get("item_id", "")) == "trial_pick"
+		and String(proj4[0].get("note", "")) == "积点 0/8",
+		"试炼镐 C 区展示行：装配即入投影（handle=-1 合成行+悬停进度 note=积点 N/8——charges=0 不入骑库存的浮窗承载）")
+	ob4c._on_cell_revealed({"kind": "safe", "cell": Vector2i(0, 0)})
+	var proj4b: Array = ctrl4.inventory_projection()
+	Kit.check_quiet(String(proj4b[0].get("note", "")) == "积点 1/8",
+		"试炼镐展示行进度刷新：开格后 note=积点 1/8（组合根重查链）")
+
 	# ⑤ 刷新练习（存量账一次性加仓/临时账不动）
 	var rng5 = load("res://core/rng_service.gd").new(); rng5.set_master_seed(261)
 	var adr5 = runner_s.new(db, rng5)
@@ -319,3 +336,14 @@ func _cell_at(orch, c: Vector2i) -> Vector2i:
 	if b != null and b.in_bounds(c):
 		return c
 	return Vector2i(-9, -9)
+
+
+# 自动兑付件展示行测试桩（反哺批⑤——空骑库存 runner 桩：charges=0 件不入骑库存，
+# 展示行合成逻辑在 treasure_interact_controller.inventory_projection 末段）
+class StubAutoInvRunner:
+	extends RefCounted
+	var treasure_inventory: StubAutoInv = StubAutoInv.new()
+	class StubAutoInv:
+		extends RefCounted
+		func query_inventory(_cb: Callable) -> Array:
+			return []