fix: resolve listed messaging targets consistently

tests/cron/test_scheduler.py

@@ -90,8 +90,9 @@ class TestResolveDeliveryTarget:
         with patch(
             "gateway.channel_directory.resolve_channel_name",
             return_value="12345678901234@lid",
-        ):
+        ) as resolve_mock:
             result = _resolve_delivery_target(job)
+        resolve_mock.assert_called_once_with("whatsapp", "Alice (dm)")
         assert result == {
             "platform": "whatsapp",
             "chat_id": "12345678901234@lid",
@@ -112,6 +113,20 @@ class TestResolveDeliveryTarget:
             "thread_id": None,
         }
 
+    def test_human_friendly_topic_label_preserves_thread_id(self):
+        """Resolved Telegram topic labels should split chat_id and thread_id."""
+        job = {"deliver": "telegram:Coaching Chat / topic 17585 (group)"}
+        with patch(
+            "gateway.channel_directory.resolve_channel_name",
+            return_value="-1009999:17585",
+        ):
+            result = _resolve_delivery_target(job)
+        assert result == {
+            "platform": "telegram",
+            "chat_id": "-1009999",
+            "thread_id": "17585",
+        }
+
     def test_raw_id_not_mangled_when_directory_returns_none(self):
         """deliver: 'whatsapp:12345@lid' passes through when directory has no match."""
         job = {"deliver": "whatsapp:12345@lid"}

tests/gateway/test_channel_directory.py

@@ -119,6 +119,19 @@ class TestResolveChannelName:
         with self._setup(tmp_path, platforms):
             assert resolve_channel_name("telegram", "Coaching Chat / topic 17585") == "-1001:17585"
 
+    def test_display_label_with_type_suffix_resolves(self, tmp_path):
+        platforms = {
+            "telegram": [
+                {"id": "123", "name": "Alice", "type": "dm"},
+                {"id": "456", "name": "Dev Group", "type": "group"},
+                {"id": "-1001:17585", "name": "Coaching Chat / topic 17585", "type": "group"},
+            ]
+        }
+        with self._setup(tmp_path, platforms):
+            assert resolve_channel_name("telegram", "Alice (dm)") == "123"
+            assert resolve_channel_name("telegram", "Dev Group (group)") == "456"
+            assert resolve_channel_name("telegram", "Coaching Chat / topic 17585 (group)") == "-1001:17585"
+
 
 class TestBuildFromSessions:
     def _write_sessions(self, tmp_path, sessions_data):

tests/tools/test_send_message_tool.py

@@ -203,6 +203,44 @@ class TestSendMessageTool:
             media_files=[],
         )
 
+    def test_display_label_target_resolves_via_channel_directory(self, tmp_path):
+        config, telegram_cfg = _make_config()
+        cache_file = tmp_path / "channel_directory.json"
+        cache_file.write_text(json.dumps({
+            "updated_at": "2026-01-01T00:00:00",
+            "platforms": {
+                "telegram": [
+                    {"id": "-1001:17585", "name": "Coaching Chat / topic 17585", "type": "group"}
+                ]
+            },
+        }))
+
+        with patch("gateway.channel_directory.DIRECTORY_PATH", cache_file), \
+             patch("gateway.config.load_gateway_config", return_value=config), \
+             patch("tools.interrupt.is_interrupted", return_value=False), \
+             patch("model_tools._run_async", side_effect=_run_async_immediately), \
+             patch("tools.send_message_tool._send_to_platform", new=AsyncMock(return_value={"success": True})) as send_mock, \
+             patch("gateway.mirror.mirror_to_session", return_value=True):
+            result = json.loads(
+                send_message_tool(
+                    {
+                        "action": "send",
+                        "target": "telegram:Coaching Chat / topic 17585 (group)",
+                        "message": "hello",
+                    }
+                )
+            )
+
+        assert result["success"] is True
+        send_mock.assert_awaited_once_with(
+            Platform.TELEGRAM,
+            telegram_cfg,
+            "-1001",
+            "hello",
+            thread_id="17585",
+            media_files=[],
+        )
+
     def test_media_only_message_uses_placeholder_for_mirroring(self):
         config, telegram_cfg = _make_config()