Allow removing unreachable remotes from session manager

tests/test_selector.py

@@ -109,6 +109,8 @@ class SelectorCatalogTests(unittest.TestCase):
             set(),
         )
         self.assertTrue(any(row.kind == "retry" for row in failed))
+        retry = next(row for row in failed if row.kind == "retry")
+        self.assertIn("d/D 移除记录", retry.main)
         matches = filter_rows(failed, "offline")
         self.assertEqual([row.kind for row in matches], ["retry"])
 
@@ -277,6 +279,34 @@ class SelectorCatalogTests(unittest.TestCase):
 
 
 class SelectorActionTests(unittest.TestCase):
+    def test_unreachable_remote_can_be_removed_with_delete_key(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            registry = RemoteRegistry(Path(directory) / "remotes.json")
+            entry = RemoteEntry("tang1@10.8.0.7")
+            registry.upsert(entry)
+            selector = SessionSelector([], registry, "/missing/ssh")
+            self.addCleanup(selector.pool.close)
+            self.addCleanup(selector.action_executor.shutdown, wait=True)
+            selector.results[entry.target] = RemoteQueryResult(
+                entry,
+                error="ssh: connect to host 10.8.0.7 port 22: Connection timed out",
+            )
+
+            rows = selector._rows()  # type: ignore[attr-defined]
+            retry = next(item for item in rows if item.kind == "retry")
+            selector.selected_key = retry.key
+            selector._handle_key("D", rows)  # type: ignore[attr-defined]
+
+            self.assertEqual(selector.view, "confirm-remove")
+            self.assertEqual(selector.input_target, entry.target)
+            confirm_rows = selector._rows()  # type: ignore[attr-defined]
+            selector._handle_key("d", confirm_rows)  # type: ignore[attr-defined]
+
+            self.assertEqual(selector.view, "main")
+            self.assertEqual(registry.load(), [])
+            self.assertNotIn(entry.target, selector.entries)
+            self.assertIn("已移除", selector.message)
+
     def test_remote_session_can_be_stopped_and_closed_without_closing_popup(self) -> None:
         with tempfile.TemporaryDirectory() as directory:
             registry = RemoteRegistry(Path(directory) / "remotes.json")