openclaw/pr-body.md

Summary

Add a JSON config knob to control unhandled promise rejection behavior in the Gateway/CLI.

Motivation

Transient network errors (e.g., undici fetch failed) can currently terminate the gateway when they surface as unhandled promise rejections. Some operators prefer warn-only behavior to avoid missed replies and restarts.

Changes

• Add gateway.unhandledRejections: "warn"|"exit" to config types + zod schema.
• Wire config into installUnhandledRejectionHandler({ mode }) in src/index.ts and src/cli/run-main.ts.
• Extend handler to accept mode and skip process.exit(1) when mode="warn".

Default behavior

Unchanged (defaults to "exit").

Acceptance criteria

• With gateway.unhandledRejections="warn", unhandled rejections are logged but do not terminate the gateway.
• With default config, behavior remains unchanged.