Ensure runtime IM channels are ready after restart

backend/tests/test_channel_connections_router.py

@@ -247,6 +247,60 @@ def test_get_providers_reports_configured_channel_not_running(tmp_path, monkeypa
     anyio.run(repo.close)
 
 
+def test_get_providers_restarts_configured_channel_when_service_can_reconcile(tmp_path, monkeypatch):
+    import anyio
+
+    repo = anyio.run(_make_repo, tmp_path)
+    config = ChannelConnectionsConfig.model_validate(
+        {
+            "enabled": True,
+            "feishu": {"enabled": True},
+        }
+    )
+    channels_config = {
+        "feishu": {
+            "enabled": True,
+            "app_id": "feishu-app",
+            "app_secret": "feishu-secret",
+        }
+    }
+    app = _make_app(config, repo, channels_config)
+    status = {
+        "service_running": True,
+        "channels": {
+            "feishu": {
+                "enabled": True,
+                "running": False,
+            }
+        },
+    }
+    reconciled: list[tuple[str, dict]] = []
+
+    async def ensure_channel_ready(provider, runtime_config):
+        reconciled.append((provider, dict(runtime_config)))
+        status["channels"][provider]["running"] = True
+        return True
+
+    service = SimpleNamespace(
+        get_status=lambda: status,
+        ensure_channel_ready=ensure_channel_ready,
+    )
+    monkeypatch.setattr("app.channels.service.get_channel_service", lambda: service)
+
+    with TestClient(app) as client:
+        response = client.get("/api/channels/providers")
+
+    assert response.status_code == 200
+    by_provider = {item["provider"]: item for item in response.json()["providers"]}
+    assert by_provider["feishu"]["configured"] is True
+    assert by_provider["feishu"]["connectable"] is True
+    assert by_provider["feishu"]["connection_status"] == "connected"
+    assert by_provider["feishu"]["unavailable_reason"] is None
+    assert reconciled == [("feishu", channels_config["feishu"])]
+
+    anyio.run(repo.close)
+
+
 def test_get_providers_uses_newest_connection_status_per_provider(tmp_path):
     import anyio
 

backend/tests/test_channels.py

@@ -3504,6 +3504,51 @@ class TestChannelService:
             "app_token": "xapp-ui",
         }
 
+    def test_start_retries_configured_channel_until_ready(self, monkeypatch):
+        from app.channels.service import ChannelService
+
+        class FlakyReadyChannel(Channel):
+            starts = 0
+
+            def __init__(self, bus, config):
+                super().__init__(name="slack", bus=bus, config=config)
+
+            async def start(self):
+                type(self).starts += 1
+                self._running = type(self).starts >= 2
+
+            async def stop(self):
+                self._running = False
+
+            async def send(self, msg):
+                return None
+
+        monkeypatch.setattr(
+            "deerflow.reflection.resolve_class",
+            lambda import_path, base_class=None: FlakyReadyChannel,
+        )
+
+        async def go():
+            service = ChannelService(
+                channels_config={
+                    "slack": {
+                        "enabled": True,
+                        "bot_token": "xoxb-ui",
+                        "app_token": "xapp-ui",
+                    },
+                }
+            )
+
+            try:
+                await service.start()
+
+                assert FlakyReadyChannel.starts == 2
+                assert service.get_status()["channels"]["slack"]["running"] is True
+            finally:
+                await service.stop()
+
+        _run(go())
+
     def test_connection_repo_is_forwarded_to_manager(self):
         from app.channels.service import ChannelService