fix(ralph-wiggum): Add Windows compatibility for stop hook

[Muminur]

Summary

• Fixed Windows compatibility issue where the stop hook fails with error: The operation was aborted. Check that the command exists and is executable.
• The root cause is that Windows cannot directly execute .sh files - they need to be invoked through bash explicitly
• Updated hooks.json to use bash command prefix, which works cross-platform when Git for Windows or WSL is installed

Problem

On Windows, the Ralph Wiggum plugin hook fails because:

1. Windows doesn't associate .sh files with a shell interpreter
2. The hook command ${CLAUDE_PLUGIN_ROOT}/hooks/stop-hook.sh is passed directly to the OS, which doesn't know how to execute it

Solution

Changed the hook command from:

"command": "${CLAUDE_PLUGIN_ROOT}/hooks/stop-hook.sh"

To:

"command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/stop-hook.sh\""

This explicitly invokes bash to run the script, which works on:

• Linux/macOS: bash is the default shell
• Windows: Works when Git for Windows (Git Bash) or WSL is installed, which is common for developers

Test Plan

• Tested on Windows 11 with Git for Windows installed
• Verified the hook executes without errors