diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/wire.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/wire.rs
index 021db31f6..06a62dffa 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/wire.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/wire.rs
@@ -1,5 +1,6 @@
 use super::model::{
-    DirectCodexUserContentPart, DirectCodexUserItem, DirectCodexUserRuntimeRegionPart,
+    DirectCodexUserAttachmentReferencePart, DirectCodexUserContentPart, DirectCodexUserItem,
+    DirectCodexUserRuntimeRegionPart,
 };
 use super::validation::validate_direct_codex_user_item;
 use crate::agent::{
@@ -97,6 +98,25 @@ fn runtime_region_summary(reference: &DirectCodexUserRuntimeRegionPart) -> Strin
     summary
 }
 
+/// 附件引用的安全摘要。
+///
+/// turn 输入与 history/prompt 投影共用这一份清洗：文件名取 basename 并去控制字符、
+/// media type 与项目路径同样过白名单，避免两条路径对同一个引用给出不同摘要。
+fn attachment_reference_summary(reference: &DirectCodexUserAttachmentReferencePart) -> String {
+    let name = sanitize_attachment_name(&reference.name);
+    let media_type = sanitize_attachment_media_type(&reference.media_type);
+    let mut summary = format!(
+        "[附件：名称={name}；类型={media_type}；大小={} 字节",
+        reference.size
+    );
+    if let Some(local_path) = sanitize_attachment_local_path(&reference.local_path) {
+        summary.push_str(&format!("；项目路径={local_path}"));
+    }
+    summary.push_str(&format!("；状态={}", reference.status.trim()));
+    summary.push(']');
+    summary
+}
+
 /// 将 canonical user item 转为 app-server `turn/start.input` 可接受的文本数组。
 /// AGC 私有 part 只在这里投影为安全摘要，canonical item 本身不被修改。
 pub(crate) fn direct_codex_user_item_to_wire_input(
@@ -120,19 +140,7 @@ pub(crate) fn direct_codex_user_item_to_wire_input(
                 runtime_region_summary(reference)
             }
             DirectCodexUserContentPart::AgcAttachmentReference(reference) => {
-                let name = sanitize_attachment_name(&reference.name);
-                let media_type = sanitize_attachment_media_type(&reference.media_type);
-                let local_path = sanitize_attachment_local_path(&reference.local_path);
-                let mut summary = format!(
-                    "[附件：名称={}；类型={}；大小={} 字节",
-                    name, media_type, reference.size
-                );
-                if let Some(local_path) = local_path {
-                    summary.push_str(&format!("；项目路径={local_path}"));
-                }
-                summary.push_str(&format!("；状态={}", reference.status.trim()));
-                summary.push(']');
-                summary
+                attachment_reference_summary(reference)
             }
         };
         input.push(serde_json::json!({ "type": "text", "text": text }));
@@ -179,20 +187,9 @@ pub(crate) fn direct_codex_user_item_to_codex_turn_input(
                 }));
             }
             DirectCodexUserContentPart::AgcAttachmentReference(reference) => {
-                let mut summary = format!(
-                    "[附件：名称={}；类型={}；大小={} 字节",
-                    reference.name.trim(),
-                    reference.media_type.trim(),
-                    reference.size
-                );
-                if !reference.local_path.trim().is_empty() {
-                    summary.push_str(&format!("；项目路径={}", reference.local_path.trim()));
-                }
-                summary.push_str(&format!("；状态={}", reference.status.trim()));
-                summary.push(']');
                 input.push(serde_json::json!({
                     "type": "text",
-                    "text": summary,
+                    "text": attachment_reference_summary(reference),
                 }));
             }
         }