[FEATURE] Write tool should respect .editorconfig / .gitattributes line ending settings (LF vs CRLF)

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The Write tool always uses OS-default CRLF on Windows, despite project-level LF config makes it a clear bug/feature request.

Proposed Solution

Write tool should respect .editorconfig / .gitattributes line ending settings (LF vs CRLF)

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

File operations

Use Case Example

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Additional Context

_No response_