docs: document read_file 20MB file size limit

[samidhachari]

Summary

Document the 20MB file size limit enforced by the read_file tool.

The limit is currently implemented in code but not documented, which can cause confusion when users encounter the error:

File size exceeds the 20MB limit.

Changes

• Added documentation for the 20MB read_file size limit in docs/tools/file-system.md.
• Included the error message returned when the limit is exceeded.

Summary

Details

Related Issues

How to Validate

Pre-Merge Checklist

• Updated relevant documentation and README (if needed)
• Added/updated tests (if needed)
• Noted breaking changes (if any)
• Validated on required platforms/methods:
  • MacOS
    • npm run
    • npx
    • Docker
    • Podman
    • Seatbelt
  • Windows
    • npm run
    • npx
    • Docker
  • Linux
    • npm run
    • npx
    • Docker

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the documentation for the read_file tool to explicitly state the existing 20MB file size limit. By clarifying this constraint and providing the associated error message, the change aims to reduce user confusion when attempting to process large files.

Highlights

• Documentation Update: Added a note to the read_file tool documentation regarding the 20MB file size limit.
• Error Message Clarity: Included the specific error message users will encounter when attempting to read files exceeding the 20MB limit.

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[github-actions]

📊 PR Size: size/XS

• Lines changed: 4
• Additions: +4
• Deletions: -0
• Files changed: 1

[gemini-code-assist]

Code Review

This pull request updates the documentation in docs/tools/file-system.md to document a 20 MB file size limit for the read_file tool, including the specific error message returned when this limit is exceeded. There are no review comments, and I have no additional feedback to provide.

_{Note: Security Review has been skipped due to the limited scope of the PR.}