diff --git a/hooks/subagent-claim-worksheet.sh b/hooks/subagent-claim-worksheet.sh
index 0984d25..2f0c758 100755
--- a/hooks/subagent-claim-worksheet.sh
+++ b/hooks/subagent-claim-worksheet.sh
@@ -118,10 +118,24 @@ if not ok_hits and not ng_hits:
     print("SKIP:no-claims"); raise SystemExit
 
 sid = (d.get("session_id") or "nosid")[:8]
-aid = (d.get("agent_id") or d.get("subagent_id") or "")[:10]
-stamp = hashlib.sha1((tp + sid + aid).encode()).hexdigest()[:8]
+
+# 2026-08-20 修：檔名原本 hash (transcript_path + session_id + agent_id)
+#   => 每個新 agent 拿到新檔名，但抽出的宣稱是同一批（取 transcript 最後一個
+#      <result>，那個可能是舊的——檔頭 08-18 註解已記過同源問題）。
+#   實害：同兩條宣稱一天內產了 6 張不同 hash 的單，總管每回合重做一次已驗完的事。
+#   => InkStoneCo#48：「永遠在誤響的警報，等於訓練人忽略這個警報」。
+#   改成 hash 宣稱內容本身，且已驗歸檔的直接跳過。
+claims_sig = "\n".join(sorted(ok_hits + ng_hits))
+stamp = hashlib.sha1(claims_sig.encode()).hexdigest()[:8]
 path = os.path.join(os.environ["DIR"], "claims-%s-%s.md" % (sid, stamp))
 
+_vdir = os.path.join(os.path.dirname(os.environ["DIR"]), "verified-claims")
+if os.path.isdir(_vdir):
+    for _f in os.listdir(_vdir):
+        if stamp in _f:
+            print("SKIP:already-verified:%s" % stamp)
+            raise SystemExit
+
 def block(title, items, howto, cap):
     if not items:
         return ""