FleetView file-preview pane fails to read files written during chip session ("File could not be read…lives outside the session folder")

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?

When a chip writes a file via the Write tool to an absolute path inside the
project root (e.g. /Users/<me>/Downloads/<Project>/_PROJECTS/foo/bar.md),
the file IS written successfully — ls confirms it on disk — but the FleetView
right-rail file-preview pane shows:

"File could not be read. It may have been deleted or moved, or it lives outside the session folder."

This makes file-based collaboration unworkable: the chip writes a doc, I can't
open it from FleetView, the chip has to re-paste the entire file inline,
burning context for nothing.

What Should Happen?

preview pane shows the file. simple, easy, peasy.

Error Messages/Logs

Steps to Reproduce

Repro:

1. Open a chip in FleetView attached to a project at /Users/me/Downloads/My Project/.
2. Have the chip Write to /Users/me/[dir]/My Project/_PROJECTS/foo/test.md.
3. Tool reports success. ls from a terminal shows the file.
4. In FleetView, click the linked filename in the chip's message OR the file chip on the right rail.
5. Result: "File could not be read…outside the session folder."

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

ebf1a1

Platform

Other

Operating System

macOS

Terminal/Shell

Other

Additional Information

Claude, like Claude code...idk its your Claude fixing the thing to y'all's Claude optimally...like in Claude Code of Desktop Claude clarifying...