Problem

The Discord message processing pipeline has a hard 30-second timeout inherited from Carbon's EventQueue.processListener(). When an LLM call (especially with thinking=high or extended reasoning) takes longer than 30 seconds, the listener is killed via Promise.race, which can cause cascading failures in the event queue.

Root Cause

OpenClaw creates the Carbon Client without passing eventQueue options:

const client = new Client({
    baseUrl: "http://localhost",
    deploySecret: "a",
    clientId: applicationId,
    publicKey: "a",
    token,
    autoDeploy: false
    // ← no eventQueue config
}, ...);

Carbon's EventQueue then defaults to listenerTimeout: 30000 (30s):

// @buape/carbon EventQueue.js
this.options = {
    listenerTimeout: options.listenerTimeout ?? 30000,
    // ...
};

This means any Discord message handler that exceeds 30 seconds is forcibly rejected, even though the underlying Carbon ClientOptions.eventQueue interface already supports configuring this value.

Impact

• Agents using thinking=high or complex tool chains frequently exceed 30 seconds
• The timeout kills the listener mid-execution → event queue stalls → cascading failures
• Telegram channel is unaffected (Grammy runner has no equivalent hard timeout on message processing), so this is a Discord-specific limitation

Proposed Solution

Expose eventQueue options (at minimum listenerTimeout) in OpenClaw's Discord channel configuration, e.g.:

// openclaw.json
{
  "channels": {
    "discord": {
      "eventQueue": {
        "listenerTimeout": 120000  // 2 minutes
      }
    }
  }
}

And pass it through to the Carbon Client constructor:

const client = new Client({
    // ...existing options
    eventQueue: discordCfg.eventQueue ?? undefined
}, ...);

Workaround

Currently the only workaround is monkey-patching node_modules/@buape/carbon/dist/src/internals/EventQueue.js directly, which gets overwritten on every openclaw update.

Environment

• OpenClaw: latest (installed via Homebrew)
• macOS (Apple Silicon)
• Carbon: @buape/carbon (bundled with OpenClaw)