Allow /stop without target argument

src/lazy_enter/bridge.py

@@ -96,11 +96,10 @@ class Bridge:
 
     def _handle_command(self, action: str, target: str, channel: str) -> None:
         """슬래시 커맨드를 처리한다."""
+        if action == "start":
             if target not in {"claude", "codex"}:
                 self.slack.send_message(channel, ":warning: 지원하지 않는 대상입니다.")
                 return
-
-        if action == "start":
             self._start_session(channel, target)
         elif action == "stop":
             self._stop_session(channel)

src/lazy_enter/slack_handler.py

@@ -86,23 +86,12 @@ class SlackHandler:
             ack()
             user_id = body.get("user_id", "")
             channel_id = body.get("channel_id", "")
-            target = self._parse_target(body.get("text", ""))
 
             if not self._is_authorized(user_id, channel_id):
                 return
 
-            if target is None:
-                self.send_message(
-                    channel_id,
-                    (
-                        ":warning: 대상은 `claude` 또는 `codex`여야 합니다. "
-                        "예: `/stop claude`"
-                    ),
-                )
-                return
-
             if self._on_command_callback:
-                self._on_command_callback("stop", target, channel_id)
+                self._on_command_callback("stop", "", channel_id)
 
     @staticmethod
     def _parse_target(text: str) -> str | None:

tests/test_bridge.py

@@ -132,6 +132,21 @@ def test_unknown_target_is_rejected(monkeypatch) -> None:
     )
 
 
+def test_stop_command_ignores_empty_target(monkeypatch) -> None:
+    FakePtyManager.instances.clear()
+    bridge = _make_bridge(monkeypatch)
+    bridge._handle_command("start", "codex", "C1")
+
+    bridge._handle_command("stop", "", "C1")
+
+    assert bridge.pty is None
+    assert bridge._active_target is None
+    assert bridge.slack.sent_messages[-1] == (
+        "C1",
+        ":electric_plug: 세션 연결이 해제되었습니다.",
+    )
+
+
 def test_handle_message_resets_last_sent_output_after_input(monkeypatch) -> None:
     FakePtyManager.instances.clear()
     bridge = _make_bridge(monkeypatch)

tests/test_slack_handler.py

@@ -111,7 +111,7 @@ def test_start_command_normalizes_target(monkeypatch) -> None:
     assert called == [("start", "claude", "C1")]
 
 
-def test_stop_command_routes_target_from_text(monkeypatch) -> None:
+def test_stop_command_ignores_target_text(monkeypatch) -> None:
     handler = _build_handler(monkeypatch)
     called = _capture_commands(handler)
 
@@ -121,7 +121,21 @@ def test_stop_command_routes_target_from_text(monkeypatch) -> None:
         {"user_id": "U1", "channel_id": "C1", "text": "claude"},
     )
 
-    assert called == [("stop", "claude", "C1")]
+    assert called == [("stop", "", "C1")]
+
+
+def test_stop_command_without_target_routes_immediately(monkeypatch) -> None:
+    handler = _build_handler(monkeypatch)
+    called = _capture_commands(handler)
+
+    stop_handler = handler.app.command_handlers["/stop"]
+    stop_handler(
+        lambda: None,
+        {"user_id": "U1", "channel_id": "C1", "text": ""},
+    )
+
+    assert called == [("stop", "", "C1")]
+    assert handler.app.client.messages == []
 
 
 def test_invalid_target_sends_warning_message(monkeypatch) -> None: