fix: mark slack channel system events untrusted

extensions/slack/src/monitor/events/channels.test.ts

@@ -78,6 +78,10 @@ describe("registerSlackChannelEvents", () => {
     });
 
     expect(trackEvent).toHaveBeenCalledTimes(1);
-    expect(enqueueSystemEventMock).toHaveBeenCalledTimes(1);
+    expect(enqueueSystemEventMock).toHaveBeenCalledWith("Slack channel created: #general.", {
+      sessionKey: "agent:main:main",
+      contextKey: "slack:channel:created:C1",
+      trusted: false,
+    });
   });
 });

extensions/slack/src/monitor/events/channels.ts

@@ -46,6 +46,7 @@ export function registerSlackChannelEvents(params: {
     enqueueSystemEvent(`Slack channel ${params.kind}: ${label}.`, {
       sessionKey,
       contextKey: `slack:channel:${params.kind}:${params.channelId ?? params.channelName ?? "unknown"}`,
+      trusted: false,
     });
   };