[BUG] the session calculation is really buggy

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?

I typed my 1st message to resume the session and within it just started with 86% session already consumed?
this is really exploitation of users who have paid for any plan. please fix your bugs this not the 1st time this issue has been raised also if you see the screenshot within 6 mins a session can not consume 85%?

<img width="2553" height="1402" alt="Image" src="https://github.com/user-attachments/assets/2323f3f4-e7a3-4026-b80e-8b0da4368941" />

What Should Happen?

I beleive your session calcualtion needs to be evaluated as we paid and before even start of the week your session starts with its already exausted with weekly limit. dude its monday?

<img width="2553" height="1402" alt="Image" src="https://github.com/user-attachments/assets/2323f3f4-e7a3-4026-b80e-8b0da4368941" />

Error Messages/Logs

Steps to Reproduce

get users session records for verification attached a screenshot for your reference.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude -- Opus 4.7

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_