Allow removing unreachable remotes from session manager

README.md

@@ -131,6 +131,10 @@ Session”；二次确认后会在后台停止远端 Herdr Session、中断其
 记忆记录，不关闭已有 window，也不停止远端 Herdr server。手机端单击条目即可执行，
 键盘支持上下键、Enter、输入搜索、Backspace、`Ctrl+R` 刷新和 Esc 返回/关闭。
 
+远端查询失败时，该远端行支持 Enter 重试，也支持按 `d` 或 `D` 二次确认后从 Hub 的
+历史列表移除。这只删除本机保存的远端登记，不会连接或修改不可达主机上的数据；需要时
+可再次通过“添加远端”登记。
+
 选中已停止的命名远端 Session 后，按 `d` 或 `D` 会进入二次确认；无论是否仍有关联
 Hub Tab 都可以删除。可点击“确认删除”、按 Enter，或再按一次 `d`/`D`。确认后在后台
 通过 SSH 执行 `herdr session delete`，永久删除该 Session 的工作现场和历史数据；若仍有

herdr_hub/selector.py

@@ -412,7 +412,7 @@ def build_main_rows(
                 PickerRow(
                     f"retry:{entry.target}",
                     "retry",
-                    "! 查询失败 · 单击重试",
+                    "! 查询失败 · Enter 重试 · d/D 移除记录",
                     result.error,
                     target=entry.target,
                 )
@@ -759,11 +759,20 @@ class SessionSelector:
                 None,
             )
             return self._activate(row)
+        if key in {"d", "D"} and self.view == "confirm-remove":
+            row = next(
+                (item for item in rows if item.kind == "confirm-yes"),
+                None,
+            )
+            return self._activate(row)
         if key in {"d", "D"} and self.view == "main":
             row = self._selected_row(rows)
             if row is not None and row.deletable:
                 self._show_delete_session_confirmation(row)
                 return None
+            if row is not None and row.kind == "retry" and row.target is not None:
+                self._show_remove_confirmation(row.target)
+                return None
             if row is not None and row.target is not None and row.session == "default":
                 self.message = "Herdr 不支持删除 default Session"
             else:
@@ -902,9 +911,8 @@ class SessionSelector:
             self.input_value = self.aliases.get(row.endpoint_key, "")
             self.message = ""
         elif row.kind == "remove":
-            self.view = "confirm-remove"
-            self.input_target = row.target
-            self.selected_key = "confirm-no"
+            assert row.target is not None
+            self._show_remove_confirmation(row.target)
         elif row.kind == "stop-session":
             assert (
                 row.window_id is not None
@@ -1012,6 +1020,12 @@ class SessionSelector:
         self.selected_key = "delete-session-no"
         self.message = ""
 
+    def _show_remove_confirmation(self, target: str) -> None:
+        self.view = "confirm-remove"
+        self.input_target = target
+        self.selected_key = "confirm-no"
+        self.message = ""
+
     def _finish_delete_session(
         self,
         target: str,
@@ -1243,7 +1257,7 @@ class SessionSelector:
             line = f"  {main}  {detail}"
             self._safe_add(screen, y, 0, line, attribute)
 
-        footer = "Enter 打开 · d/D 删除停止项 · Ctrl+R 刷新 · Esc 关闭"
+        footer = "Enter 打开/重试 · d/D 删除/移除 · Ctrl+R 刷新 · Esc 关闭"
         if self.view in {"working-delete-session", "working-stop-session"}:
             footer = "远端操作进行中，请稍候"
         elif self.view != "main":

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")