fix: suppress duplicate discord slow-listener logs

src/logging/console-capture.test.ts

@@ -92,6 +92,17 @@ describe("enableConsoleCapture", () => {
     vi.useRealTimers();
   });
 
+  it("suppresses discord EventQueue slow listener duplicates", () => {
+    setLoggerOverride({ level: "info", file: tempLogPath() });
+    const warn = vi.fn();
+    console.warn = warn;
+    enableConsoleCapture();
+    console.warn(
+      "[EventQueue] Slow listener detected: DiscordMessageListener took 12.3 seconds for event MESSAGE_CREATE",
+    );
+    expect(warn).not.toHaveBeenCalled();
+  });
+
   it("does not double-prefix timestamps", () => {
     setLoggerOverride({ level: "info", file: tempLogPath() });
     const warn = vi.fn();

src/logging/console.ts

@@ -90,7 +90,16 @@ const SUPPRESSED_CONSOLE_PREFIXES = [
 
 function shouldSuppressConsoleMessage(message: string): boolean {
   if (isVerbose()) return false;
-  return SUPPRESSED_CONSOLE_PREFIXES.some((prefix) => message.startsWith(prefix));
+  if (SUPPRESSED_CONSOLE_PREFIXES.some((prefix) => message.startsWith(prefix))) {
+    return true;
+  }
+  if (
+    message.startsWith("[EventQueue] Slow listener detected") &&
+    message.includes("DiscordMessageListener")
+  ) {
+    return true;
+  }
+  return false;
 }
 
 function isEpipeError(err: unknown): boolean {