[general-purpose] Test hooks with file changes

[sylvansys]

Parent Issue: #321
Agent Type: general-purpose
Branch: 321-feature/can-u-integrate-changes-from-httpsgithub

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Task Description

Test hooks with file changes

Task Prompt

Your task is to create a small test file to verify the hooks system works properly.

1. Create a file at plugins/project-context/test-hook-output.md with content:

# Hook Test Output

This file was created by a subagent to test:
- SubagentStart hooks
- SubagentStop hooks  
- Stacked PR workflow

Timestamp: [current time]
Agent ID: [your agent id if visible]

## Context Received

List the CLAUDE.md files and rules you received in your context.

2. Fill in the actual values for timestamp and any context you received.

3. Report what context/rules you received at session start.

This is a test to verify:

• Hooks fire on subagent activity
• Stacked PR workflow creates branches and PRs for subagent work
• Context is properly passed to subagents