fix(agent): auto-recover outcome is failed when a recovery action itself fails

When download.recheck / task.retry was executed but errored (e.g. the
downloader was unreachable), applyRecoveryOutcome only looked at
succeeded actions and recorded outcome=not_attempted with the summary
"没有执行恢复动作", which is false. Record outcome=failed and name the
failed action instead. Needs image rebuild to take effect.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/server/src/modules/agent/investigate.ts

@@ -375,14 +375,18 @@ export async function applyRecoveryOutcome(
   else if (check?.state === "recovered") outcome = "recovered";
   else if (check?.state === "failed") outcome = "failed";
   else if (done.length > 0) outcome = "unverified";
+  // 恢复动作执行了但本身失败(如下载器不可达):算 failed,不能写成"没有执行恢复动作"
+  else if (acts.actions.length > 0) outcome = "failed";
   else if (res.reason === "budget") outcome = "budget_exceeded";
   else outcome = "not_attempted";
-  const what = done.map((a) => a.capabilityId).join(" + ");
+  const what = (done.length > 0 ? done : acts.actions).map((a) => a.capabilityId).join(" + ");
   const summary =
     outcome === "recovered"
       ? `已恢复（系统核实）：执行 ${what} 后业务状态已恢复。`
       : outcome === "failed"
-        ? `未恢复：执行 ${what} 后业务状态仍为失败，已退回待处理。`
+        ? done.length > 0
+          ? `未恢复：执行 ${what} 后业务状态仍为失败，已退回待处理。`
+          : `未恢复：${what} 执行失败，已退回待处理。`
         : outcome === "unverified"
           ? `未恢复：执行 ${what} 后在核实时限内业务状态未恢复，已退回待处理。`
           : outcome === "budget_exceeded"