回包失败留痕改为记录真实原因

- response_write_failed 改名为 response_delivery_failed，新增 ResponseDeliveryFailure 枚举
- 两个调用点分别传 Write（stdin 写入 / flush 失败）与 TurnBindMismatch（bind_turn 返回 false）
- 日志键改为 agent.direct_codex.approval.response_delivery_failed 并带 cause 字段，回合绑定失败不再被误报成写入失败
- 同步更新 shared-memory 决策记录里的日志键口径

apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server/execution.rs

@@ -291,6 +291,26 @@ fn accepted(id: u64, method: &str) -> Value {
     }
 }
 
+/// app-server 交互回包未能送达的原因。
+///
+/// 两种失败共用同一条收束路径，但来源不同：写失败是 Codex 根本没收到 decision，回合绑定不一致
+/// 是回包已经产出、宿主无法确认执行作用域。留痕必须写真实原因，不能按函数名反推。
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub(super) enum ResponseDeliveryFailure {
+    /// stdin 写入 / flush 失败。
+    Write,
+    /// `bind_turn` 返回 false：回合绑定不一致。
+    TurnBindMismatch,
+}
+impl ResponseDeliveryFailure {
+    fn as_str(self) -> &'static str {
+        match self {
+            Self::Write => "response-write-failed",
+            Self::TurnBindMismatch => "turn-bind-mismatch",
+        }
+    }
+}
+
 impl ExecutionAdapter {
     pub(super) async fn for_turn(
         root: &Path,
@@ -789,15 +809,16 @@ impl ExecutionAdapter {
         .await;
     }
 
-    pub(super) fn response_write_failed(self: &Arc<Self>) {
-        // 回包写不出去时 Codex 侧等不到 decision，表现为「审批没有回应」；与主动 decline 分开留痕。
+    pub(super) fn response_delivery_failed(self: &Arc<Self>, cause: ResponseDeliveryFailure) {
+        // 回包没送达 Codex 时线上表现为「审批没有回应」；与主动 decline 分开留痕。
         // 同一回合内同一原因只留一行：这一步可能被重复触发。
         self.log_once(
-            "host-interaction\u{1}response-write-failed".to_string(),
+            format!("host-interaction\u{1}response-delivery:{}", cause.as_str()),
             |_| {
                 format!(
-                    "agent.direct_codex.approval.response_write_failed thread_id={}",
-                    self.thread_id
+                    "agent.direct_codex.approval.response_delivery_failed thread_id={} cause={}",
+                    self.thread_id,
+                    cause.as_str()
                 )
             },
         );

apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server/mod.rs

@@ -18,7 +18,7 @@ mod execution;
 mod model_catalog;
 pub(crate) use direct_project_identity::thread_id_for_project;
 use direct_project_identity::*;
-use execution::ExecutionAdapter;
+use execution::{ExecutionAdapter, ResponseDeliveryFailure};
 
 const GAME_CREATOR_CODEX_APP_SERVER_PROVIDER_ID: &str = "genarrative_agc";
 const GAME_CREATOR_CODEX_APP_SERVER_API_KEY_ENV: &str = "GENARRATIVE_AGC_CODEX_API_KEY";
@@ -4884,7 +4884,7 @@ async fn read_game_creator_codex_app_server_stdout(
                     };
                     if !sent {
                         if let Some(adapter) = adapter {
-                            adapter.response_write_failed();
+                            adapter.response_delivery_failed(ResponseDeliveryFailure::Write);
                         }
                     }
                 });
@@ -4916,7 +4916,9 @@ async fn read_game_creator_codex_app_server_stdout(
                         let adapter = inner.execution.lock().ok().and_then(|slot| slot.clone());
                         if let Some(adapter) = adapter {
                             if !adapter.bind_turn(turn_id) {
-                                adapter.response_write_failed();
+                                adapter.response_delivery_failed(
+                                    ResponseDeliveryFailure::TurnBindMismatch,
+                                );
                             }
                         }
                     }