[BUG] Stats screen shows inaccurate usage numbers

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?

The usage/stats overview screen (accessed via the app's stats/overview panel — shows "Sessions", "Messages", "Total tokens", "Active days", "Current streak", "Longest streak", "Peak hour", "Favorite model", plus a contribution-style heatmap grid) is displaying numbers that don't match my actual usage.

Screen showed:

Sessions: 369
Messages: 76,410
Total tokens: 63.6M
Active days: 54
Current streak: 9d
Longest streak: 32d
Peak hour: 8 AM
Favorite model: Opus 5
Footer note: "You've used ~260x more tokens than Dune."

<img width="588" height="365" alt="Image" src="https://github.com/user-attachments/assets/1d9af49c-8c8b-434c-a796-f7f712a106c1" />

<img width="668" height="425" alt="Image" src="https://github.com/user-attachments/assets/3ee42691-35c1-4f03-b228-9ff3437120f4" />
<img width="588" height="365" alt="Image" src="https://github.com/user-attachments/assets/7d490517-fe84-4735-b450-223fbd987d39" />

What Should Happen?

I've been using claude code for month 90 days.

<img width="668" height="425" alt="Image" src="https://github.com/user-attachments/assets/870c8ca0-d3e5-4e94-9bda-82d8a5feba57" />

Error Messages/Logs

Steps to Reproduce

I'm not sure. Just look at your own tokens.

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.251 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

The days - blue/orange - boxes are off on both. The tokens may be off only on the desktop