diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server/process_tree.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server/process_tree.rs
index fb8844a95..758e40619 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server/process_tree.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server/process_tree.rs
@@ -135,6 +135,10 @@ impl OwnedProcessTree {
                 .ok()
                 .filter(|pid| *pid > 0)
                 .ok_or("app-server-process-owner-missing")?;
+            #[cfg(target_os = "linux")]
+            if let Some(has_live_member) = linux_process_group_has_live_member(pid) {
+                return Ok(!has_live_member);
+            }
             if unsafe { libc::kill(-pid, 0) } == 0 {
                 return Ok(false);
             }
@@ -183,6 +187,34 @@ impl OwnedProcessTree {
     }
 }
 
+/// 容器 PID 1 不回收被 reparent 的僵尸孙进程时，kill(-pgid, 0) 仍认为组存活；
+/// 僵尸对退役语义等价于已退出，扫描 /proc 时只把非僵尸成员视为存活。
+#[cfg(all(unix, target_os = "linux"))]
+fn linux_process_group_has_live_member(pgid: i32) -> Option<bool> {
+    for entry in std::fs::read_dir("/proc").ok()? {
+        let entry = entry.ok()?;
+        let Ok(stat) = std::fs::read_to_string(entry.path().join("stat")) else {
+            continue;
+        };
+        let Some(close) = stat.rfind(')') else {
+            continue;
+        };
+        let mut fields = stat[close + 1..].split_whitespace();
+        let (Some(state), Some(_ppid), Some(member_pgid)) =
+            (fields.next(), fields.next(), fields.next())
+        else {
+            continue;
+        };
+        if member_pgid.parse::<i32>().ok() != Some(pgid) {
+            continue;
+        }
+        if state != "Z" {
+            return Some(true);
+        }
+    }
+    Some(false)
+}
+
 impl Drop for OwnedProcessTree {
     fn drop(&mut self) {
         // Drop 只做应急回收，永远不伪造完成证明；正式终态必须 await shutdown。