[BUG] The `/usage` command fails to show usage stats (stuck on "Loading usage data...") in sessions that have been idle for some time

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?

Running /usage within a Claude Code session does not show usage stats, if run in a session that's been idle (no messages sent) for a while, e.g. 1-3 hours or more. It gets stuck in a loading state ("Loading usage data..."):

<img width="462" height="212" alt="Image" src="https://github.com/user-attachments/assets/03a9dc39-3bc8-452c-ac65-b7a52c060ef4" />

Exiting and restarting the session allows /usage to start working again, as does sending a message to Claude within the idle session before running /usage. But it's not ideal to need to perform these workarounds just to check usage before continuing an idle session.

What Should Happen?

Running /usage should display usage stats, regardless of how long a session has been idle.

Error Messages/Logs

Steps to Reproduce

1. Open a Claude Code session
2. Run /usage and see that it correctly displays usage stats
3. Leave the session idle for 1-3 hours
4. Try to run /usage again, and see that it

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.101 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

This is the same bug described in #21637, which was auto-closed by the github-actions bot.

The bug occurs across platforms and apps (Mac, Windows, Terminal.app, iTerm2, VSCode / Cursor integrated shells, etc).