diff --git a/ai_review/agent/review_agent.py b/ai_review/agent/review_agent.py
index b83b21a..0333854 100644
--- a/ai_review/agent/review_agent.py
+++ b/ai_review/agent/review_agent.py
@@ -20,8 +20,8 @@ SYSTEM_PROMPT = """You are a strict content moderation AI. Your task is to revie
 
 ## Output format:
 Return ONLY a valid JSON object, no other text.
-For violation: {{"invalid": "true"}}
-For safe content: {{"invalid": "false"}}
+For violation: {{"invalid": true}}
+For safe content: {{"invalid": false}}
 
 ## Reference examples:
 {examples}
@@ -42,7 +42,7 @@ class ReviewAgent:
             base_url=os.getenv("DEEPSEEK_BASE_URL", "https://api.deepseek.com"),
         )
         self.rag = RAGStore()
-        self.model = os.getenv("DEEPSEEK_MODEL", "deepseek-chat")
+        self.model = os.getenv("DEEPSEEK_MODEL", "deepseek-v4-flash")
         self.temperature = float(os.getenv("DEEPSEEK_TEMPERATURE", "0.0"))
         self.max_tokens = int(os.getenv("DEEPSEEK_MAX_TOKENS", "128"))
 
@@ -68,7 +68,7 @@ class ReviewAgent:
             )
             raw = response.choices[0].message.content.strip()
         except Exception as e:
-            return {"invalid": "false", "error": "api_error", "detail": str(e)}
+            return {"invalid": "true", "error": "api_error", "detail": str(e)}
 
         try:
             result = json.loads(raw)
@@ -77,8 +77,8 @@ class ReviewAgent:
             if '"invalid"' in raw_lower and 'true' in raw_lower:
                 result = {"invalid": "true"}
             elif '"invalid"' in raw_lower and 'false' in raw_lower:
-                result = {"invalid": "false"}
+                result = {"invalid": "true"}
             else:
-                result = {"invalid": "false", "error": "parse_failed", "raw": raw}
+                result = {"invalid": "true", "error": "parse_failed", "raw": raw}
 
         return result
diff --git a/captcha/_run.sh b/captcha/_run.sh
index 574e884..b4c1664 100755
--- a/captcha/_run.sh
+++ b/captcha/_run.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
 cd "$(dirname "$0")" || exit
-python3 captcha_service.py
+exec python3 captcha_service.py
diff --git a/dnfs/dnfs.py b/dnfs/dnfs.py
index 8772eb6..fdae19f 100755
--- a/dnfs/dnfs.py
+++ b/dnfs/dnfs.py
@@ -100,7 +100,11 @@ def review_content(content: str, timeout: int = 10) -> Dict[str, Any]:
         with urllib.request.urlopen(req, timeout=timeout) as resp:
             resp_data = resp.read().decode("utf-8")
             data =  json.loads(resp_data)
-            return not data['invalid']
+            invalid: bool = data['invalid']
+            return invalid == False
+            #invalid = data
+            #return invalid
+
     except urllib.error.HTTPError as e:
         # 服务端返回 4xx/5xx 错误时，尝试解析错误正文
         error_body = e.read().decode("utf-8")
@@ -197,8 +201,9 @@ def add_note():
 
 
     # 内容审查
-    review = review_content(title + '\n\n' + content, 10)
-    if not review:
+    review = review_content(title + '\n' + content, 10)
+    if True != review:
+        #return jsonify({'error': 'review failed', 'data': review}), 400
         return jsonify({'error': 'review failed'}), 400
 
     insert_payload = {
@@ -351,6 +356,29 @@ def update_note():
         return jsonify({"error": "Invalid param"}), 400
 
 
+    if pid != 0:
+
+        select_payload = {
+            'action': 'select',
+            'table': 'Notes',
+            'where': {
+                'id': pid
+            }
+        }
+
+        notes = call_db_service(DB_SERVER_URL, select_payload)
+
+        # 不存在的父节点
+        if len( notes['data']) == 0:
+            return jsonify({'error': 'the new node need a parent'}), 400
+
+
+    # 内容审查
+    review = review_content(title + '\n' + content, 10)
+    if True != review:
+        #return jsonify({'error': 'review failed', 'data': review}), 400
+        return jsonify({'error': 'review failed'}), 400
+
     #with app.app_context():
 
     #    note = Note.query.get(id)