T6吞噬流+地形转化+商店保底（迭代12——整合定稿S7/B4）：relics.tres填4行（地脉采撷common·受地形伤资源补偿——伤害仍发生/荆棘编织者rare·挖开伤害型格双产出/净化工兵rare·标中旗中和相邻伤害型格——🔴R4甲仅限伤害型过滤=variation effect=flat_damage判据信息型永不清除/熔火之躯rarest锚点·受地形伤积层轮末反打——触发键通用不按种类特化）；BoardData.clear_variants中和口；orchestrator地形伤兑付点四面（refund/double/counter/轮末blast反打后清零——行格=英雄格修(-1,-1)越界）；商店保底=货架零流派件时挤掉最后一张普通卡换devour件（占位制货架恒≤3——首版追加4卡断言红返工；按关变异精细绑定归数值批披露）+relic卡定价15固定锚公式同构+投影display/value走relic行；冒烟断言适配relic卡合法态（词表放行+价格分叉）表换代27件→696/0三闸+run_all全绿——批次一铺量27件收官

game/core/level_runner.gd

@@ -762,6 +762,26 @@ func _shop_draw_shelf() -> void:
 		_shop_shelf.append(tok)
 		if _shop_shelf.size() >= 3:
 			break
+	# 商店保底（迭代 12 T6——「本关变异交互件必刷」简化口径：货架零流派件时**挤掉最后一张普通卡**
+	# 换吞噬流件〔地形交互件广义映射——按关变异精细绑定归数值批，台账披露待追认〕；占位制货架恒
+	# ≤3；池内无 devour 令牌=不保底合法态）
+	var has_relic := false
+	for tok in _shop_shelf:
+		if String((tok as Dictionary).get("kind", "")) == "relic":
+			has_relic = true
+			break
+	if not has_relic and not _shop_shelf.is_empty():
+		for row in db.relic_rows():
+			if String(row.get("archetype", "")) != "devour":
+				continue
+			var rid := String(row.get("relic_id", ""))
+			for t in _pool_deck:
+				var tok2: Dictionary = t as Dictionary
+				if String(tok2.get("kind", "")) == "relic" and String(tok2.get("relic_id", "")) == rid:
+					_shop_shelf[_shop_shelf.size() - 1] = {"kind": "relic", "tier": String(tok2.get("tier", "")), "relic_id": rid}
+					break
+			if String((_shop_shelf[_shop_shelf.size() - 1] as Dictionary).get("kind", "")) == "relic":
+				break   # 换一张即止
 
 
 # 库存余量（TP0——令牌库内该 kind 剩余枚数单点读；未注入/防御读 = 0）
@@ -774,9 +794,14 @@ func pool_stock(kind: String) -> int:
 
 
 # 现价 = ceil(基价 × b^(关序−1) × A^(本次进店已购次数))（P4 甲 ceil 向上单一取整——玩家不利向；
-# A/b 表 knob provisional；核心现算，呈现层禁复算——契约 5）
+# A/b 表 knob provisional；核心现算，呈现层禁复算——契约 5）。relic 卡（保底占位——shop 词表外）
+# 基价 provisional 15 固定锚（台账披露待追认——shop.tres 词表扩列归数值批）。
 func pool_price(kind: String) -> int:
 	var row: Dictionary = db.shop_pool_row(kind)
+	if row.is_empty():
+		if kind == "relic":
+			return int(ceil(15.0 * pow(db.shop_price_b(), float(maxi(0, int(level_row.level_index) - 1))) * pow(db.shop_price_a(), float(_shop_visit_buys))))
+		return 999999
 	var base := float(maxi(1, int(row.get("base_price", 1))))
 	var price_f: float = base * pow(db.shop_price_b(), float(maxi(0, int(level_row.level_index) - 1))) \
 		* pow(db.shop_price_a(), float(_shop_visit_buys))
@@ -791,11 +816,18 @@ func shop_shelf() -> Array:
 		var kind := String((tok as Dictionary).get("kind", ""))
 		var tier := String((tok as Dictionary).get("tier", ""))
 		var row: Dictionary = db.shop_pool_row(kind)
+		var display := String(row.get("display_name", kind))
+		var value := int(db.adventure.bonus_value(kind, tier))
+		if row.is_empty() and kind == "relic":
+			var rrow: Dictionary = db.relic_row(String(tok.get("relic_id", "")))
+			display = String(rrow.get("display_name", "流派件"))
+			value = 0
 		out.append({
 			"kind_id": kind,
 			"tier": tier,
-			"display_name": String(row.get("display_name", kind)),
-			"value": int(db.adventure.bonus_value(kind, tier)),
+			"relic_id": String(tok.get("relic_id", "")),
+			"display_name": display,
+			"value": value,
 			"price": pool_price(kind),
 			"stock_left": pool_stock(kind),
 		})