Claude hooks: Provide the current model response in the `Stop` event.

Bug Description

Provide the last message from the model on Stop events so we know what we are dealing with:

Why? We have instructed the model to provide information about what it is doing and how it completed in a structured form, but we have no way of knowing that without manually parsing the transcription path, which seems excessive.

It would be trivially simple for you to provide the model response through the Stop hook so we can parse it. I would greatly appreciate it if you take care of this.

Thank you for your help!

{
   "cwd" : "/home/user/src/claude-hooks",
   "hook_event_name" : "Stop",
   "permission_mode" : "default",
   "session_id" : "0a9258bd-acdd-47db-91ef-34a4c73b695e",
   "stop_hook_active" : false,
   "transcript_path" : "/home/ewheeler/.claude/projects/-home-ewheeler-src-claude-hooks/0a9258bd-acdd-47db-91ef-34a4c73b695e.jsonl",
...
   "MODEL_RESPONSE" : " .... " // ADD THIS PLEASE!
}

Environment Info

• Platform: linux
• Terminal: vte-based
• Version: 2.0.27
• Feedback ID: 69e1cd4b-b307-47d5-9f99-1bf4cb1ecfbb

Errors

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