From bf2f790e6e306f7d4b8e8d97ad7fda443e3b189d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B0=8F=E6=A9=98?= <xiaoju@shazhou.work>
Date: Sat, 9 May 2026 12:52:39 +0000
Subject: [PATCH] fix: detect crashed threads even when .running marker is
 already gone
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Check worker PID liveness as final fallback — if worker is dead
and thread has no __end__ node, it crashed.

小橘 <xiaoju@shazhou.work>
---
 packages/cli-workflow/src/thread-scan.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/packages/cli-workflow/src/thread-scan.ts b/packages/cli-workflow/src/thread-scan.ts
index fbcc381..43aeabd 100644
--- a/packages/cli-workflow/src/thread-scan.ts
+++ b/packages/cli-workflow/src/thread-scan.ts
@@ -230,6 +230,16 @@ export async function resolveThreadListStatus(
     }
     return "running";
   }
+  // No .running marker + no __end__ + source "active" → check if worker is dead (crashed)
+  const ctlResult = await readWorkerCtl(storageRoot, row.hash);
+  if (ctlResult.ok) {
+    try {
+      process.kill(ctlResult.value.pid, 0);
+    } catch {
+      // Worker PID is dead, thread never finished — crashed
+      return "failed";
+    }
+  }
   return "active";
 }