Add configurable timeout for AskUserQuestion tool

Problem

When Claude asks a question via the AskUserQuestion tool, the timeout is too short to compose a thoughtful response. Users frequently get timed out before they can finish typing their answer, which disrupts the workflow.

Proposed Solution

Add a configurable timeout setting for the AskUserQuestion tool, e.g. in settings.json:

{
  "askUserQuestionTimeout": 120000
}

This would allow users to increase (or disable) the timeout based on their needs.

Why This Matters

• Some questions require looking things up or thinking through an answer
• The current fixed timeout forces users to rush or lose their response
• A configurable timeout would improve the interactive experience significantly