[BUG] inefficient tool use burns tokens

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?

claude burns tokens unnecessary

⏺ Bash(cat ~/.local/bin/mail-pull)
⎿  #!/usr/bin/env bash
# Mail PULL - fast fetch-only (Gmail -> local)
# Local tag changes do NOT sync to Gmail with this
… +43 lines (ctrl+o to expand)

⏺ Bash(cat ~/.local/bin/mail-sync)
⎿  #!/usr/bin/env bash
# Mail SYNC - full bidirectional sync (pull + push)
# Slower but keeps Gmail and local in sync
… +43 lines (ctrl+o to expand)

⏺ Update(~/.local/bin/mail-pull)
⎿  File must be read first

⏺ Update(~/.local/bin/mail-sync)
⎿  File must be read first

⏺ Read(~/.local/bin/mail-pull)
⎿  Read 47 lines

⏺ Read(~/.local/bin/mail-sync)
⎿  Read 47 lines

What Should Happen?

one read one update
not cat update read update

Error Messages/Logs

Steps to Reproduce

it happened automatically, but I guess you can force it to cat and update after. seeing it not he first time

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

v2.0.75

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_