feat(卡② T7-V10): static_scan 新增 S12 旧件零残留扫描 + 清尽注释内旧符号

- S12 扫 game/ 全域 .gd/.tres（改名与旧符号同存数据行/测试/smoke，非仅 core）：
  counters_export/counters_seed/counters_merge_export/counters_seed_snapshot/_reset_tree_limited_counters
  + 带引号旧 id "tree_sense_*"/"twin_digs"/"instinct_atk"（引号锚定不误伤新名）零命中
- 非空扫描面自检（185 文件）；注入 counters_export 见红、还原回绿（变异验证取证）
- 迁移注释措辞去除旧符号字面、feat_vouchers V16 写键 twin_digs→adv_twin_digs
编号说明：卡① 已占 S11（代码注释禁用词），本扫描落 S12（卡片成文时 S11 未定义，属卡片与现实偏差，归反哺点）。

game/tests/static_scan.sh

@@ -210,4 +210,27 @@ else
 fi
 fi
 
+# ── S12 — 效果引擎无状态化旧件零残留（卡② V10/F1；禁 counters_export／counters_seed／_reset_tree_limited_counters 等旧符号与带引号旧 id 字面回归）──
+# 扫描面：game/ 全域 .gd 与 game/data/tables/*.tres（改名与旧符号同时存在于数据行/测试/smoke，非仅 core——不扩面即空转）
+# 带引号旧 id 匹配（"twin_digs" 不误伤 "adv_twin_digs"——引号锚定；round_instinct_atk 不匹 "instinct_atk"）
+# 自检：扫描面文件数为零即判红（防静默空转）
+if [ -d game/core ]; then
+S12_SYM='counters_export|counters_seed|counters_merge_export|counters_seed_snapshot|_reset_tree_limited_counters|"tree_sense_sharp_used"|"tree_sense_guard_used"|"twin_digs"|"instinct_atk"'
+S12_FACE=$(find game/ -type f \( -name '*.gd' -o -name '*.tres' \) 2>/dev/null)
+S12_FC=$(echo "$S12_FACE" | grep -c .)
+if [ "$S12_FC" -eq 0 ]; then
+  echo "[static_scan] S12 FAIL: 扫描面为空——路径写错导致的静默空转"
+  fail=1
+else
+  S12_HITS=$(echo "$S12_FACE" | tr '\n' '\0' | xargs -0 grep -lEn "$S12_SYM" 2>/dev/null | wc -l)
+  if [ "$S12_HITS" -gt 0 ]; then
+    echo "[static_scan] S12 FAIL: 无状态化旧件残留命中 $S12_HITS 文件"
+    echo "$S12_FACE" | tr '\n' '\0' | xargs -0 grep -En "$S12_SYM" 2>/dev/null
+    fail=1
+  else
+    echo "[static_scan] S12 ok（扫描面 $S12_FC 个 .gd/.tres，旧件零残留）"
+  fi
+fi
+fi
+
 exit $fail

game/tests/unit/core/effect_words_t1_test.gd

@@ -87,12 +87,12 @@ func _init() -> void:
 			if String(h.get("kind", "")) == "counter_add":
 				EffectEngine.counter_add(ctx3, String(h.get("counter_id", "")), int(h.get("value", 0)))
 	Kit.check_quiet(EffectEngine.counter(ctx3, "adv_persist") == 2 and int(adv_bucket.get("adv_persist", -1)) == 2,
-		"adventure 桶就地直写共享字典累积=2（adv_ 前缀归 adventure 桶——替代旧 counters_export）〔专长批 V1〕")
+		"adventure 桶就地直写共享字典累积=2（adv_ 前缀归 adventure 桶——替代旧导出搬运）〔专长批 V1〕")
 	var fx4 = EffectEngineScript.new(null)
 	fx4._push_trigger("test", "adv_row2", {"on": "mine_hit",
 		"do": {"kind": "counter_add", "counter_id": "adv_persist", "value": 1}}, {})
 	var ctx4 := EffectContext.new()
-	ctx4.adventure_bucket = adv_bucket   # 挂同一字典引用=下一战可读上一战持久值（替代旧 counters_seed 回灌）
+	ctx4.adventure_bucket = adv_bucket   # 挂同一字典引用=下一战可读上一战持久值（替代旧回灌）
 	Kit.check_quiet(EffectEngine.counter(ctx4, "adv_persist") == 2,
 		"adventure 桶共享引用跨引擎可读（无 export/seed，同字典即跨战持久）〔专长批 V1〕")
 

game/tests/unit/core/feat_vouchers_test.gd

@@ -111,7 +111,7 @@ func _init() -> void:
 	# V16——断点扩容往返：新账本随断点快照/续玩回填（breakpoint_resume_test P5 同构）
 	var sm = load("res://core/save_manager.gd").new("user://_feat_vouchers_bp.json")
 	sm.load_from_disk()
-	a.run_ledger.adventure_counters = {"pain_layers": 3, "twin_digs": 5}   # 四账住 RunLedger
+	a.run_ledger.adventure_counters = {"pain_layers": 3, "adv_twin_digs": 5}   # 四账住 RunLedger
 	a._refresh_stock = 2
 	a.set_save_manager(sm)
 	a._on_level_finished({"result": "victory", "hp": 10, "node_index": 1, "node_id": 1, "node_type": "shop"})