diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_runtime/mod.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_runtime/mod.rs
index b915c5ece..92d4a2c47 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_runtime/mod.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_runtime/mod.rs
@@ -2012,11 +2012,17 @@ fn direct_codex_error_code(failure: &TurnError) -> &'static str {
             Deadline::TurnHardLimit => "turn-hard-timeout",
         },
         TurnError::TransportClosed(_) => "transport-closed",
+        // typed 分类优先于文本判据：通道断开的原文不一定带 "transport closed"，
+        // 不能让分类结果取决于宿主换了哪句 Display。
+        TurnError::ModelCallFailed(payload) => match payload.kind {
+            ModelCallKind::TransportBroken => "transport-closed",
+            // 其余 kind 还没有专属 code，仍按宿主原文兜底（TODO(文本判据)）。
+            _ => classify_direct_codex_error(&payload.detail),
+        },
         // 产生层还没有 typed 出口：按宿主原文分类（TODO(文本判据)）。
         TurnError::ProjectRootUnanchored(_)
         | TurnError::EnvironmentNotReady(_)
         | TurnError::HostStateUnavailable(_)
-        | TurnError::ModelCallFailed(_)
         | TurnError::TurnInterrupted(_)
         | TurnError::ReviewRequired { .. }
         | TurnError::RepairRequired { .. } => {
@@ -7417,6 +7423,22 @@ mod tests {
         assert!(!diagnostic.contains("provider.example"));
     }
 
+    /// typed 分类优先于文本判据：`ModelCallKind::TransportBroken` 的原文里没有
+    /// `transport closed` / `连接已关闭`，也要标成 `transport-closed`。
+    #[test]
+    fn model_call_transport_broken_is_classified_from_the_typed_kind() {
+        let parent = tempfile::tempdir().expect("temp dir");
+        let root = parent.path().join("project");
+        init_local_game_project_at(&root, "direct-diagnostic", "直连诊断").expect("init project");
+        let error = TurnError::from_model_call(&LlmError::Transport(
+            "宿主自己写的收场说明，不含分类标记".to_string(),
+        ));
+
+        let text = record_direct_codex_failure(&root, &error, None);
+
+        assert!(text.contains("code=transport-closed"), "{text}");
+    }
+
     #[test]
     fn direct_failure_diagnostic_marks_project_history_shape_failure_as_not_retryable() {
         let parent = tempfile::tempdir().expect("temp dir");