[BUG] IDE-side inline comments on plan files aren't readable by Claude

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?

In the VSCode/Cursor Claude Code extension, when I leave an inline comment on a line of a plan file (e.g. the (1) badge that appears next to a highlighted line in plan-mode review), Claude has no way to read the comment's text.

Workaround today: the user has to retype the comment in chat, which defeats the purpose of inline review.

What Should Happen?

Claude should receive inline comment text as part of its context.

Error Messages/Logs

Steps to Reproduce

In plan mode, ask Claude to draft a plan to ~/.claude/plans/<name>.md.
After the plan is written, click on a line in the plan and leave an inline comment via the IDE UI (the (1) badge appears).

For example:

<img width="147" height="38" alt="Image" src="https://github.com/user-attachments/assets/689fd93b-975b-4289-91d0-905821fe138a" />

Reply to Claude something like "I left a comment".
Claude can Read the plan file from disk, but the disk content does not contain the comment. The only signal it has is that some annotation exists at a line — not what the annotation says.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.148 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Cursor

Additional Information

_No response_