fix: thread/unarchive 不再预 resume（已归档 thread 直接调 thread/unarchive）

tests/test_host_thread_cli.py

@@ -151,7 +151,7 @@ class ThreadCliTest(unittest.TestCase):
         calls = self._calls_before_close(fake)
         self.assertEqual(calls, [("archive", "th-1")])
 
-    def test_unarchive_resume_first(self):
+    def test_unarchive_no_resume(self):
         fake = FakeServer()
         code, out, _ = self._run(
             fake, ["thread-unarchive", "--thread-id", "th-1"])
@@ -159,7 +159,21 @@ class ThreadCliTest(unittest.TestCase):
         self.assertEqual(json.loads(out), {"thread": {"id": "th-1"}})
         calls = self._calls_before_close(fake)
         self.assertEqual(calls, [
-            ("resume", "th-1"),
+            ("request", "thread/unarchive", {"threadId": "th-1"}),
+        ])
+
+    def test_unarchive_resume_failure_does_not_block(self):
+        # 回归：已归档 thread 的 resume 会失败；unarchive 不再调
+        # resume，所以 resume 失败也不应挡住 unarchive（此前
+        # resume 抛错 → CLI 退出 1 → 服务端回 502）。
+        fake = FakeServer()
+        fake.resume_error = True
+        code, out, _ = self._run(
+            fake, ["thread-unarchive", "--thread-id", "th-1"])
+        self.assertEqual(code, 0)
+        self.assertEqual(json.loads(out), {"thread": {"id": "th-1"}})
+        calls = self._calls_before_close(fake)
+        self.assertEqual(calls, [
             ("request", "thread/unarchive", {"threadId": "th-1"}),
         ])