AskUserQuestion returns empty inside Skill tool (GSD plugin context)

Bug Description

When AskUserQuestion is called inside a skill invoked via the Skill tool (specifically GSD /gsd:update), the tool returns immediately with an empty answer without showing the interactive prompt UI to the user.

Steps to Reproduce

1. Have GSD installed (global, v1.22.x)
2. Run /gsd:update which triggers the Skill tool
3. The update workflow calls AskUserQuestion with options ("Yes, update now" / "No, cancel")
4. Expected: User sees the question UI and selects an option
5. Actual: Tool returns immediately with empty answer: User has answered your questions: .

Environment

• Claude Code version: 2.1.63
• OS: macOS (Darwin 24.6.0)
• Shell: zsh
• GSD version: 1.22.4 (global install)

Hooks Configuration

No PreToolUse hooks configured. Only:

• SessionStart: gsd-check-update.js
• PostToolUse: gsd-context-monitor.js

Related Issues

• #10400 — bypass permissions (fixed in 2.0.67)
• #13439 — PreToolUse hook conflict (fixed in 2.0.76)
• #29547 — skill/plugin allowed-tools bypassing requiresUserInteraction() (closed)
• #29733 — general empty answer issue

Analysis

This appears to be the same root cause as #29547: the skill's allowed-tools list includes AskUserQuestion, causing the permission evaluator to auto-approve it via alwaysAllowRules before requiresUserInteraction() is checked. The fix from #29547 may not have shipped in 2.1.63 yet.

Log Evidence

⏺ User answered Claude's questions:
  ⎿  

The empty ⎿ confirms no user selection was captured.