The nullish coalescing operator (??) was treating null as a fallback
trigger, causing getAskTimeout()'s null return value (meaning 'disabled')
to be replaced with DEFAULT_ASK_TIMEOUT_MS (30000ms).
Now explicitly checks for undefined to distinguish between:
- undefined: settingsManager unavailable → use default
- null: user explicitly disabled timeout → preserve null
- number: user-set timeout → use that value
can1357
961539aae2