Address Copilot IM channel feedback

backend/app/channels/slack.py

@@ -99,6 +99,10 @@ class SlackChannel(Channel):
         app_token = self.config.get("app_token", "")
 
         if self._connection_repo is not None and self.config.get("event_delivery") == "http":
+            if not bot_token:
+                logger.error("Slack HTTP Events mode requires bot_token")
+                return
+            await self._initialize_operator_web_client(str(bot_token))
             self._loop = asyncio.get_event_loop()
             self._running = True
             self.bus.subscribe_outbound(self._on_outbound)
@@ -109,18 +113,7 @@ class SlackChannel(Channel):
             logger.error("Slack channel requires bot_token and app_token")
             return
 
-        self._web_client = self._web_client_factory(token=bot_token)
-        if self._bot_user_id is None:
-            try:
-                auth_info = await asyncio.to_thread(self._web_client.auth_test)
-                user_id = auth_info.get("user_id") if isinstance(auth_info, dict) else None
-                if user_id is None:
-                    auth_get = getattr(auth_info, "get", None)
-                    user_id = auth_get("user_id") if callable(auth_get) else None
-                if isinstance(user_id, str) and user_id:
-                    self._bot_user_id = user_id
-            except Exception:
-                logger.warning("[Slack] failed to resolve bot user id; app mention text may include the bot mention", exc_info=True)
+        await self._initialize_operator_web_client(str(bot_token))
         self._socket_client = SocketModeClient(
             app_token=app_token,
             web_client=self._web_client,
@@ -224,6 +217,21 @@ class SlackChannel(Channel):
 
     # -- internal ----------------------------------------------------------
 
+    async def _initialize_operator_web_client(self, bot_token: str) -> None:
+        self._web_client = self._web_client_factory(token=bot_token)
+        if self._bot_user_id is not None:
+            return
+        try:
+            auth_info = await asyncio.to_thread(self._web_client.auth_test)
+            user_id = auth_info.get("user_id") if isinstance(auth_info, dict) else None
+            if user_id is None:
+                auth_get = getattr(auth_info, "get", None)
+                user_id = auth_get("user_id") if callable(auth_get) else None
+            if isinstance(user_id, str) and user_id:
+                self._bot_user_id = user_id
+        except Exception:
+            logger.warning("[Slack] failed to resolve bot user id; app mention text may include the bot mention", exc_info=True)
+
     async def _get_web_client_for_message(self, msg: OutboundMessage):
         if msg.connection_id and self._connection_repo is not None:
             credentials = await self._connection_repo.get_credentials(msg.connection_id)

backend/app/gateway/routers/channel_connections.py

@@ -165,7 +165,7 @@ def _provider_status(
 
 
 def _new_binding_code() -> str:
-    return secrets.token_hex(4)
+    return secrets.token_urlsafe(16)
 
 
 async def _create_state(
@@ -216,7 +216,9 @@ async def get_channel_providers(request: Request) -> ChannelProvidersResponse:
                 raise
     owner_user_id = _get_user_id(request)
     connections = await repo.list_connections(owner_user_id) if repo is not None else []
-    by_provider = {item["provider"]: item for item in connections}
+    by_provider: dict[str, dict[str, Any]] = {}
+    for item in connections:
+        by_provider.setdefault(item["provider"], item)
 
     providers: list[ChannelProviderResponse] = []
     for provider, meta in _PROVIDER_META.items():

backend/tests/test_channel_connections_router.py

@@ -101,6 +101,41 @@ def test_get_providers_reports_unconfigured_when_runtime_channel_is_missing(tmp_
     anyio.run(repo.close)
 
 
+def test_get_providers_uses_newest_connection_status_per_provider(tmp_path):
+    import anyio
+
+    repo = anyio.run(_make_repo, tmp_path)
+
+    async def seed_connections():
+        await repo.upsert_connection(
+            owner_user_id=str(_user().id),
+            provider="slack",
+            external_account_id="U-old",
+            workspace_id="T-old",
+            status="revoked",
+        )
+        await anyio.sleep(0.01)
+        await repo.upsert_connection(
+            owner_user_id=str(_user().id),
+            provider="slack",
+            external_account_id="U-new",
+            workspace_id="T-new",
+            status="connected",
+        )
+
+    anyio.run(seed_connections)
+    app = _make_app(_enabled_connections_config(), repo, _channels_config())
+
+    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["slack"]["connection_status"] == "connected"
+
+    anyio.run(repo.close)
+
+
 def test_get_connections_returns_current_user_connections_only(tmp_path):
     import anyio
 
@@ -176,7 +211,7 @@ def test_connect_slack_returns_binding_command_and_persists_state(tmp_path):
     assert body["provider"] == "slack"
     assert body["mode"] == "binding_code"
     assert body["url"] is None
-    assert body["code"]
+    assert len(body["code"]) >= 22
     assert body["instruction"] == f"Send /connect {body['code']} to the DeerFlow Slack bot."
 
     async def count_states():

backend/tests/test_slack_channel_connections.py

@@ -2,7 +2,9 @@
 
 from __future__ import annotations
 
+import sys
 from datetime import UTC, datetime, timedelta
+from types import ModuleType
 from unittest.mock import AsyncMock, MagicMock
 
 from app.channels.message_bus import MessageBus, OutboundMessage
@@ -94,3 +96,59 @@ def test_slack_send_uses_connection_bot_token_when_connection_id_is_present():
         web_client.chat_postMessage.assert_called_once()
 
     anyio.run(go)
+
+
+def test_slack_http_events_mode_initializes_operator_web_client(monkeypatch):
+    import anyio
+
+    from app.channels.slack import SlackChannel
+
+    class FakeWebClient:
+        def __init__(self, token: str) -> None:
+            self.token = token
+            self.messages: list[dict] = []
+
+        def auth_test(self):
+            return {"user_id": "B-http"}
+
+        def chat_postMessage(self, **kwargs):
+            self.messages.append(kwargs)
+
+    slack_sdk = ModuleType("slack_sdk")
+    slack_sdk.WebClient = FakeWebClient
+    socket_mode = ModuleType("slack_sdk.socket_mode")
+    socket_mode.SocketModeClient = object
+    response = ModuleType("slack_sdk.socket_mode.response")
+    response.SocketModeResponse = object
+    monkeypatch.setitem(sys.modules, "slack_sdk", slack_sdk)
+    monkeypatch.setitem(sys.modules, "slack_sdk.socket_mode", socket_mode)
+    monkeypatch.setitem(sys.modules, "slack_sdk.socket_mode.response", response)
+
+    async def go():
+        channel = SlackChannel(
+            bus=MessageBus(),
+            config={
+                "bot_token": "xoxb-operator",
+                "event_delivery": "http",
+                "connection_repo": MagicMock(),
+            },
+        )
+
+        await channel.start()
+        assert channel._running is True
+        assert channel._web_client is not None
+        assert channel._web_client.token == "xoxb-operator"
+        assert channel._bot_user_id == "B-http"
+
+        channel._post_connection_reply("C123", "Slack connected to DeerFlow.", "1710000000.000100")
+
+        assert channel._web_client.messages == [
+            {
+                "channel": "C123",
+                "text": "Slack connected to DeerFlow.",
+                "thread_ts": "1710000000.000100",
+            }
+        ]
+        await channel.stop()
+
+    anyio.run(go)