[Bug] Reminder meant for Claude is mistakenly shown to the human user during /context

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Reviving #40087 #47536

Bug Description
This is not actionable by the user and seems misplaced? This shows to the user in /context rather than showing this to Claude in the system prompt, or any other potential actions that Claude Code could take.

      ℹ File reads using 11.1k tokens (6%) → save ~3.3k
        If you are re-reading files, consider referencing earlier reads. Use offset/limit for large files.

Environment Info

• Platform: linux
• Terminal: VSCode, Kitty, Konsole, other
• Version: 2.1.186

What Should Happen?

The message should specify an action the user could take, if any exists. Or be sent to the model or actioned automatically internally.

Steps to Reproduce

1. Get session with large file reads
2. /context all

Claude Model

None

Is this a regression?

No, this never worked

Claude Code Version

2.1.186

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

Please any adventurers coming across this issue, interaction will bump the auto closure time window, preventing an incorrect close from the bot. A thumbs down to the message that it might send below could be a sufficient interaction.